0001653909-23-000102 | 10-Q | XBRL Viewer

Inventory

9 Months Ended

Sep. 30, 2023

Inventory consisted of the following as of September 30, 2023 and December 31, 2022:


(in thousands)	September 30, 2023		December 31, 2022
Finished goods	$	91,371	$	125,065
Reserve to reduce inventories to net realizable value	(11,438)		(8,269)
Total inventory	$	79,933	$	116,796

Stockholders’ Equity - Narrative (Details)	Sep. 30, 2023 class vote $ / shares shares	Dec. 31, 2022 class $ / shares shares
Class of Stock [Line Items]
Capital stock authorized (in shares)	2,220,000,000	2,220,000,000
Preferred stock, authorized (in shares)	20,000,000	20,000,000
Preferred stock, par value (in dollars per share) \| $ / shares	$ 0.0001	$ 0.0001
Convertible preferred stock, shares issued (in shares)	0	0
Convertible preferred stock, shares outstanding (in shares)	0	0
Number of classes of common stock \| class	2	2
Common stock, reclassification ratio	1
Common stock, percentage of Class B outstanding (less than)	10.00%
Minimum
Class of Stock [Line Items]
Conversion of common stock, date fixed by the board of directors, period	61 days
Maximum
Class of Stock [Line Items]
Conversion of common stock, date fixed by the board of directors, period	180 days
Class A Common Stock
Class of Stock [Line Items]
Common stock, authorized (in shares)	2,000,000,000	2,000,000,000
Common stock, par value (in dollars per share) \| $ / shares	$ 0.0001	$ 0.0001
Number of votes per share for common stock \| vote	1
Class B Common Stock
Class of Stock [Line Items]
Common stock, authorized (in shares)	200,000,000	200,000,000
Common stock, par value (in dollars per share) \| $ / shares	$ 0.0001	$ 0.0001
Number of votes per share for common stock \| vote	10

Business Combinations and Dispositions (Details) $ in Thousands			3 Months Ended		9 Months Ended
	Sep. 19, 2023 USD ($) installment	Sep. 05, 2023 USD ($) installment	Sep. 30, 2023 USD ($)	Sep. 30, 2022 USD ($)	Sep. 30, 2023 USD ($)	Sep. 30, 2022 USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Loss on disposal			$ 2,346	$ 0	$ 2,346	$ 0
Disposal Group, Disposed of by Sale, Not Discontinued Operations \| Allbirds South Korea LLC
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Consideration receivable from transaction		$ 1,600
Number of installments \| installment		3
Number of days, period in which the first installment due		60 days
Consideration received less than net book value of the transferred assets and liabilities		$ 1,900
Loss on disposal			300		300
Disposal Group, Disposed of by Sale, Not Discontinued Operations \| Allbirds Canada ULC
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Consideration receivable from transaction	$ 1,300
Number of installments \| installment	4
Consideration received less than net book value of the transferred assets and liabilities	$ 3,300
Loss on disposal			$ 2,000		$ 2,000

Stock-Based Compensation (Tables)

9 Months Ended

Sep. 30, 2023

Share-Based Payment Arrangement [Abstract]

Schedule of Share-based Payment Arrangement, Option, Activity

A summary of the status of the 2015 Plan and 2021 Plan as of December 31, 2022 and September 30, 2023, and changes during the nine month period ended September 30, 2023, is presented below:


	Options Outstanding
	Number of Options	Weighted-Average Exercise Price		Weighted-Average Remaining Contractual Term (in years)	Aggregate Intrinsic Value (in thousands)
Outstanding at December 31, 2022	15,388,186	$	3.71	6.43	$	6,101
Granted	2,638,982	1.39
Exercised	(719,579)	1.75			948
Forfeited	(1,080,938)	3.83
Cancelled	(1,483,555)	4.30
Outstanding at September 30, 2023	14,743,096	3.38		6.36	1,878
Vested and exercisable at September 30, 2023	9,122,606	3.61		4.82	1,878

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions

The following weighted average assumptions were used for issuances during the three and nine months ended September 30, 2023 and 2022, for employees and non-employees:


	Three Months Ended September 30,				Nine Months Ended September 30,
	2023		2022		2023		2022
Risk-free interest rate	4.29	%	2.86	%	3.77	%	2.78	%
Dividend yield	—		—		—		—
Volatility	43.12	%	43.42	%	42.43	%	47.28	%
Expected lives (in years)	6.13		6.13		6.04		5.92

Schedule of Share-based Payment Award, Employee Stock Purchase Plan, Valuation Assumptions

The following table summarizes the weighted-average assumptions used in estimating the fair value of the 2021 ESPP grants for the following offering periods presented, using the Black Scholes option-pricing model:


	Offering Period - May 3, 2023 to November 2, 2023		Offering Period - November 3, 2022 to May 2, 2023		Offering Period - May 3, 2022 to November 2, 2022		Offering Period - November 3, 2021 to May 2, 2022
Risk-free interest rate	5.08	%	4.44	%	2.97	%	1.63	%
Dividend yield	—		—		—		—
Volatility	45.59	%	43.42	%	47.15	%	63.00	%
Expected lives (years)	0.5		0.5		0.5		0.5

Schedule of Share-based Payment Arrangement, Restricted Stock Unit, Activity

RSU activity during the nine months ended September 30, 2023 was as follows:


	Number of Shares	Weighted-Average Grant Date Fair Value per Share
Unvested at December 31, 2022	4,788,964	$	4.86
Granted	10,308,183	1.65
Vested	(1,690,736)	4.16
Forfeited	(1,963,947)	3.92
Unvested at September 30, 2023	11,442,464	$	2.23

Schedule of Stock-based Compensation Expense, Restricted Stock Unit, Activity

Each of the three performance periods is considered an individual tranche of the award (referred to as “Tranche 1,” “Tranche 2” and “Tranche 3,”respectively).


	Number of Shares	Grant Date Fair Value per Share		Requisite Service Period
Tranche 1	262,553	$	4.77	June 1, 2022 - May 31, 2023
Tranche 2	262,553	$	5.16	June 1, 2022 - May 31, 2024
Tranche 3	262,554	$	5.41	June 1, 2022 - May 31, 2025

Schedule of Share-Based Payment Arrangement, Performance Shares, Activity

PSU activity during the nine months ended September 30, 2023 was as follows:


	Target Number of Shares	Weighted-Average Grant Date Fair Value per Share
Unvested at December 31, 2022	787,660	$	5.11
Granted	—	—
Vested	—	—
Forfeited	(262,552)	$	4.77
Unvested at September 30, 2023	525,108	$	5.29

Schedule of Stock-based Compensation Expense

Stock-based compensation expense, recognized as selling, general, and administrative expense in the condensed consolidated statements of operations and comprehensive loss for the three and nine months ended September 30, 2023 and 2022, was comprised of the following:


	Three Months Ended September 30,				Nine Months Ended September 30,
(in thousands)	2023		2022		2023		2022
Stock-based compensation, net of amounts capitalized	$	4,690	$	5,793	15,662		13,942
Capitalized stock-based compensation	248		333		677		892
Total stock-based compensation	$	4,938	$	6,126	$	16,339	$	14,834

Prepaid Expenses and Other Current Assets

9 Months Ended

Sep. 30, 2023

Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]

Prepaid Expenses and Other Current Assets

Prepaid expenses and other current assets consisted of the following as of September 30, 2023 and December 31, 2022:


(in thousands)	September 30, 2023		December 31, 2022
Prepaid expenses	$	4,910	$	6,283
Inventory returns receivable	714		1,090
Security deposits	499		463
Taxes receivable	7,304		6,420
Other receivables	3,946		908
Restricted cash	639		632
Total prepaid expenses and other current assets	$	18,012	$	15,796

Fair Value Measurements- Narrative (Details) - USD ($)	3 Months Ended		9 Months Ended
Fair Value Measurements- Narrative (Details) - USD ($)	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Fair Value Disclosures [Abstract]
Equity securities, unrealized gain (loss)	$ 0	$ 0	$ 0	$ 0
Impairment investment			100,000
Investment without readily determinable fair value	$ 2,000,000		$ 2,000,000		$ 2,300,000

Business Combinations and Dispositions	9 Months Ended
Business Combinations and Dispositions	Sep. 30, 2023
Discontinued Operations and Disposal Groups [Abstract]
Business Combinations and Dispositions	Business Combinations and Dispositions Dispositions In September 2023, as part of our strategic transformation plan announced in March 2023, we sold our South Korean and Canadian businesses to unrelated third-parties. These sales did not qualify for accounting as discontinued operations under ASC 205, Presentation of Financial Statements. South Korea On September 5, 2023, we entered into an asset purchase agreement with an unrelated third party for the sale of certain net assets used in connection with the operation of our South Korean subsidiary, Allbirds Korea LLC. The net assets sold primarily included inventory and property and equipment related to our retail store lease, offset by sales return liabilities and gift card liabilities. As part of this transaction, we are to be paid consideration of $1.6 million, payable in three separate installments, first commencing within 60 days of the date of the sale and ending on March 31, 2024, recorded in other receivables within prepaid expenses and other current assets on our condensed consolidated balance sheet. Consideration received was less than the net book value of the transferred net assets of $1.9 million, resulting in a loss of $0.3 million, which was recorded in the condensed consolidated statement of operations and comprehensive loss for the three and nine months ended September 30, 2023. Canada On September 19, 2023, we entered into an asset purchase agreement with an unrelated third party for the sale of certain net assets used in connection with the operation of our Canadian subsidiary, Allbirds Canada, ULC. The net assets sold primarily include inventory and property and equipment related to our retail store leases, offset by sales return liabilities and gift card liabilities. As part of this transaction, we are to be paid a total consideration of $1.3 million, payable in four separate installments, commencing on November 15, 2023 and ending on March 15, 2024, recorded in other receivables within prepaid expenses and other current assets on our condensed consolidated balance sheet. Consideration received was less than the net book value of the transferred net assets of $3.3 million, resulting in a loss of $2.0 million, which was recorded in the condensed consolidated statement of operations and comprehensive loss for the three and nine months ended September 30, 2023. Assets Held for Sale As of September 30, 2023, we have not identified any property, equipment, and lease assets and liabilities that meet the criteria to be classified as “held for sale” under ASC 360, Property, Plant, and Equipment.

Net Loss Per Share (Tables)

9 Months Ended

Sep. 30, 2023

Earnings Per Share [Abstract]

Schedule of Basic and Diluted Net Loss per Share

The following table sets forth the computation of basic and diluted net loss per share attributable to common stockholders for the three and nine months ended September 30, 2023 and 2022:


	Three Months Ended September 30,				Nine Months Ended September 30,
(in thousands, except share and per share data)	2023		2022		2023		2022
Numerator:
Net loss attributable to common stockholders	$	(31,575)	$	(25,241)	$	(95,679)	$	(76,489)
Denominator:
Weighted-average shares used in computing net loss per share attributable to common stockholders, basic and diluted	152,103,817		149,267,269		151,005,080		148,481,459
Net loss per share attributable to common stockholders, basic and diluted	$	(0.21)	$	(0.17)	$	(0.63)	$	(0.52)

Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share

The following shares of preferred stock and common stock were excluded from the computation of diluted net loss per share attributable to common stockholders for the periods presented, because including them would have been anti-dilutive:


	September 30, 2023	September 30, 2022
Outstanding stock options	14,743,096	15,590,268
Common stock warrants	—	0
2021 ESPP	43,692	53,803
RSUs	11,442,464	5,081,676
PSUs	525,108	787,660
Total anti-dilutive securities	26,754,360	21,513,407

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Cash flows from operating activities:
Net loss	$ (95,679)	$ (76,489)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	15,142	11,129
Amortization of debt issuance costs	37	37
Stock-based compensation	15,662	14,785
Inventory write-down	9,149	12,675
Realized loss on equity investment	84	0
Loss from sales of businesses	2,376	0
Changes in assets and liabilities:
Accounts receivable	3,799	1,563
Inventory	23,090	(34,890)
Prepaid expenses and other current assets	750	(1,939)
Operating lease right-of-use assets and current and noncurrent lease liabilities	2,919	0
Other assets	0	(3,839)
Accounts payable and accrued expenses	(2,783)	(12,054)
Other long-term liabilities	9	7,674
Deferred revenue	(53)	(810)
Net cash used in operating activities	(25,498)	(82,158)
Cash flows from investing activities:
Purchase of property and equipment	(9,657)	(24,957)
Changes in security deposits	758	(610)
Proceeds from equity investment	166	0
Net cash used in investing activities	(8,733)	(25,567)
Cash flows from financing activities:
Proceeds from the exercise of stock options	516	2,738
Taxes withheld and paid on employee stock awards	(359)	(152)
Proceeds from issuance of common stock under the employee stock purchase plan	233	823
Repayment of non-recourse promissory note	0	539
Payments of deferred offering costs	0	(744)
Net cash provided by financing activities	390	3,204
Effect of foreign exchange rate changes on cash, cash equivalents, and restricted cash	(804)	(2,698)
Net decrease in cash, cash equivalents, and restricted cash	(34,645)	(107,219)
Cash, cash equivalents, and restricted cash—beginning of period	167,767	288,576
Cash, cash equivalents, and restricted cash—end of period	133,122	181,357
Supplemental disclosures of cash flow information:
Cash paid for interest	86	63
Cash paid for taxes	1,477	1,366
Noncash investing and financing activities:
Purchase of property and equipment included in accounts payable	30	1,299
Non-cash exercise of common stock warrants	0	35
Stock-based compensation included in capitalized internal-use software	677	892
Reconciliation of cash, cash equivalents, and restricted cash:
Cash and cash equivalents	132,483	180,727
Restricted cash included in prepaid expenses and other current assets	639	630
Total cash, cash equivalents, and restricted cash	$ 133,122	$ 181,357

Stock-Based Compensation - Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions (Details)	3 Months Ended		6 Months Ended				9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Nov. 02, 2023	May 02, 2023	Nov. 02, 2022	May 02, 2022	Sep. 30, 2023	Sep. 30, 2022
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Risk-free interest rate	4.29%	2.86%					3.77%	2.78%
Dividend yield	0.00%	0.00%					0.00%	0.00%
Volatility	43.12%	43.42%					42.43%	47.28%
Expected lives (in years)	6 years 1 month 17 days	6 years 1 month 17 days					6 years 14 days	5 years 11 months 1 day
2021 ESPP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Risk-free interest rate				4.44%	2.97%	1.63%
Dividend yield				0.00%	0.00%	0.00%
Volatility				43.42%	47.15%	63.00%
Expected lives (in years)				6 months	6 months	6 months
2021 ESPP \| Subsequent Event
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Risk-free interest rate			5.08%
Dividend yield			0.00%
Volatility			45.59%
Expected lives (in years)			6 months

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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+ Details

Fair Value Measurements - Schedule of Fair Value Assets and Liabilities Measured on Recurring Basis (Details) - Fair Value, Recurring	Sep. 30, 2023 USD ($)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Liabilities, fair value disclosure	$ 0
Assets, fair value disclosure	82,000,000
Money market funds
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Money market funds	82,000,000
Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Assets, fair value disclosure	82,000,000
Level 1 \| Money market funds
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Money market funds	82,000,000
Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Assets, fair value disclosure	0
Level 2 \| Money market funds
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Money market funds	0
Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Assets, fair value disclosure	0
Level 3 \| Money market funds
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Money market funds	$ 0

Property and Equipment - Net

9 Months Ended

Sep. 30, 2023

Property, Plant and Equipment [Abstract]

Property and Equipment - Net

Property and equipment consisted of the following as of September 30, 2023 and December 31, 2022:


(in thousands)	September 30, 2023		December 31, 2022
Leasehold improvements	$	39,830	$	40,305
Furniture and fixtures	23,832		23,988
Internal-use software	28,110		23,393
Machinery and equipment	939		884
Computers and equipment	2,690		1,937
Total property and equipment - gross	95,401		90,507
Less: accumulated depreciation and amortization	(47,300)		(36,167)
Total property and equipment - net	$	48,101	$	54,340

Depreciation and amortization expense for the three and nine months ended September 30, 2023 was $5.2 million and $15.3 million, respectively, and for three and nine months ended September 30, 2022 was $4.1 million and $11.2 million, respectively, recognized as selling, general, and administrative expense in the condensed consolidated statements of operations and comprehensive loss.

Other Assets

9 Months Ended

Sep. 30, 2023

Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]

Other Assets

Other assets consisted of the following as of September 30, 2023 and December 31, 2022:


(in thousands)	September 30, 2023		December 31, 2022
Investment in equity securities	$	2,000	$	2,250
Security deposits	3,501		4,417
Intangible assets	94		133
Debt issuance costs	20		57
Deferred tax assets	1,001		1,001
Total other assets	$	6,616	$	7,858

Investment in Equity Securities

On November 20, 2020, we entered into an agreement to make a minority equity investment of $2.0 million in Natural Fiber Welding, Inc. (“NFW”) in exchange for 201,207 shares of Series A-3 Preferred Stock. Our investment

is carried at cost, less any impairment, plus or minus changes resulting from observable price changes in orderly transactions for an identical or similar investment of the same issuer. Throughout the year, we assess whether impairment indicators exist to trigger the performance of an impairment analysis. There were no impairment charges or observable price changes for the three and nine months ended September 30, 2023.

On November 22, 2021, we made a $0.3 million investment in NoHo ESG, Inc. (“NoHo ESG”) via a simple agreement for future equity (“SAFE”). Our investment was carried at cost, less any impairment, plus or minus changes resulting from observable price changes in orderly transactions for an identical or similar investment of the same issuer. Throughout the year, we assess whether impairment indicators exist to trigger the performance of an impairment analysis. In April 2023, Noho ESG was dissolved. In accordance with the provisions of the SAFE, we were entitled to receive the entire amount of our investment. However, as a result of a shortfall of assets, we received a pro rata share of remaining assets, which included approximately $0.2 million in cash and rights to their intellectual property. Therefore, we recorded a realized loss on our investment of $0.1 million for the nine months ended September 30, 2023.

Definite-lived Intangible Assets

Intangible assets include intellectual property purchased from West Harbor Technologies, LLC (“West Harbor”) for $1.3 million, including transaction costs of $0.1 million, in January 2020. The intangible asset had an estimated useful life of 3 years, and was fully amortized as of March 31, 2023. We recorded amortization charges of $0.0 million for the three and nine months ended September 30, 2023, and $0.1 million and $0.3 million for the three and nine months ended September 30, 2022, respectively, which are recognized as selling, general, and administrative expense in the condensed consolidated statements of operations and comprehensive loss.

Stock-Based Compensation - Schedule of Share-based Payment Arrangement, Performance Stock Unit, Activity (Details) - PSUs	9 Months Ended
	Sep. 30, 2023 $ / shares shares
Number of Shares
Unvested at beginning of period (in shares) \| shares	787,660
Granted (in shares) \| shares	0
Vested (in shares) \| shares	0
Forfeited (in shares) \| shares	(262,552)
Unvested at end of period(in shares) \| shares	525,108
Weighted-Average Grant Date Fair Value per Share
Unvested at beginning of period (in dollars per share) \| $ / shares	$ 5.11
Granted (in dollars per share) \| $ / shares	0
Vested (in dollars per share) \| $ / shares	0
Forfeited (in dollars per share) \| $ / shares	4.77
Unvested at end of period (in dollars per share) \| $ / shares	$ 5.29

CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares	Sep. 30, 2023	Dec. 31, 2022
Class A Common Stock
Common stock, par value (in dollars per share)	$ 0.0001	$ 0.0001
Common stock, authorized (in shares)	2,000,000,000	2,000,000,000
Common stock, issued (in shares)	99,999,316	96,768,745
Common stock, outstanding (in shares)	99,999,316	96,768,745
Class B Common Stock
Common stock, par value (in dollars per share)	$ 0.0001	$ 0.0001
Common stock, authorized (in shares)	200,000,000	200,000,000
Common stock, issued (in shares)	52,547,761	53,137,729
Common stock, outstanding (in shares)	52,547,761	53,137,729

Property and Equipment - Net (Tables)

9 Months Ended

Sep. 30, 2023

Property, Plant and Equipment [Abstract]

Schedule of Property and Equipment

Property and equipment consisted of the following as of September 30, 2023 and December 31, 2022:


(in thousands)	September 30, 2023		December 31, 2022
Leasehold improvements	$	39,830	$	40,305
Furniture and fixtures	23,832		23,988
Internal-use software	28,110		23,393
Machinery and equipment	939		884
Computers and equipment	2,690		1,937
Total property and equipment - gross	95,401		90,507
Less: accumulated depreciation and amortization	(47,300)		(36,167)
Total property and equipment - net	$	48,101	$	54,340

Accrued Expenses and Other Current Liabilities (Tables)

9 Months Ended

Sep. 30, 2023

Payables and Accruals [Abstract]

Schedule of Accrued Liabilities

Accrued expenses consisted of the following as of September 30, 2023 and December 31, 2022:


(in thousands)	September 30, 2023		December 31, 2022
Sales-refund reserve	$	2,485	$	4,534
Taxes payable	2,260		3,336
Employee-related liabilities	6,196		2,624
Accrued expenses	9,207		12,954
Total accrued expenses and other current liabilities	$	20,148	$	23,448

Stock-Based Compensation - Schedule of Stock-based Compensation Expense (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Share-Based Payment Arrangement [Abstract]
Stock-based compensation, net of amounts capitalized	$ 4,690	$ 5,793	$ 15,662	$ 13,942
Capitalized stock-based compensation	248	333	677	892
Total stock-based compensation	$ 4,938	$ 6,126	$ 16,339	$ 14,834

Description of Business	9 Months Ended
Description of Business	Sep. 30, 2023
Accounting Policies [Abstract]
Description of Business	Description of Business Allbirds, Inc. (“Allbirds” and, together with its wholly owned subsidiaries, the “Company,” “we,” or “our”) was incorporated in the state of Delaware on May 6, 2015. Headquartered in San Francisco, California, Allbirds is a global lifestyle brand that innovates with naturally derived materials to make better footwear and apparel products in a better way, while treading lighter on our planet. The majority of our revenue is from sales directly to consumers via our digital and store channels. Distributor Transition In September 2023, we entered into agreements appointing exclusive distributors in South Korea and Canada. Under the distribution arrangements, each third-party distributor operates our existing websites and retail stores and sells products, purchased from us, through various distribution channels, including the stores and eCommerce platform, under our brand names in their respective country. As part of the appointment, we entered into an asset purchase agreement with each distributor for the sale of certain net assets used in connection with the operations of our businesses in South Korea and Canada, respectively. Refer to Note 3, Business Combinations and Dispositions, for further details.

Long-Term Debt	9 Months Ended
Long-Term Debt	Sep. 30, 2023
Debt Disclosure [Abstract]
Long-Term Debt	Long-Term Debt On February 20, 2019, we entered into a credit agreement with JPMorgan Chase Bank, N.A. (the “Original Credit Agreement”). The Original Credit Agreement was an asset-based loan, which provided for a revolving line of credit of up to $40.0 million and an optional accordion, which, if exercised, would have allowed us to increase the aggregate commitment by up to $35.0 million, subject to obtaining additional lender commitments and satisfying certain conditions. The Original Credit Agreement had a maturity date of February 20, 2024. On April 17, 2023, we entered into an amendment to the Original Credit Agreement, which amended the terms of the Original Credit Agreement to, among other things, (i) increase the committed amount from $40.0 million to $50.0 million, (ii) increase the uncommitted incremental borrowing capacity from $35.0 million to $50.0 million, (iii) increase the interest rate margin by 0.50%, (iv) extend the maturity date from February 20, 2024 to April 17, 2026 and (v) provide that a Dominion Event Date (as defined therein) shall occur on any date on which Availability (as defined therein) is less than 25.0% of the Aggregate Revolving Commitments (as defined therein). Interest on borrowings under the revolving credit facility accrued at a variable rate equal to (i) the Term Secured Overnight Financing Rate (“SOFR”), plus (ii) 0.10%, plus (ii) a specified spread of 1.25% or 1.50% dependent on the average quarterly revolver availability, calculated on the last day of each fiscal quarter being greater than 20% of the total revolver commitments or less than or equal to 20% of the total revolver commitments, respectively. The commitment fee under the Credit Agreement is 0.20% per annum on the average daily unused portion of each lender’s commitment. In addition, we are required to pay a fronting fee of 0.125% per annum on the average daily aggregate face amount of issued and outstanding letters of credit. Interest, commitment fees and fronting fees are payable monthly, in arrears. The Credit Agreement contains customary representations and warranties and customary affirmative and negative covenants applicable to us and our subsidiaries, including, among other things, restrictions on indebtedness, liens, investments, mergers, dispositions, dividends and other distributions and a financial covenant that requires us to maintain a specified minimum fixed charge coverage ratio. In addition, the Credit Agreement contains certain customary events of default including, but not limited to, failure to pay interest, principal and fees or other amounts when due, material misrepresentations or misstatements in any representation or warranty, covenant defaults, certain cross defaults to other material indebtedness, certain judgment defaults and events of bankruptcy. As of September 30, 2023 and December 31, 2022, there were no amounts outstanding under the Credit Agreement.

- Definition

The entire disclosure for information about short-term and long-term debt arrangements, which includes amounts of borrowings under each line of credit, note payable, commercial paper issue, bonds indenture, debenture issue, own-share lending arrangements and any other contractual agreement to repay funds, and about the underlying arrangements, rationale for a classification as long-term, including repayment terms, interest rates, collateral provided, restrictions on use of assets and activities, whether or not in compliance with debt covenants, and other matters important to users of the financial statements, such as the effects of refinancing and noncompliance with debt covenants.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1B
-Subparagraph (h)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481139/470-20-50-1B

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(c))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480678/235-10-S99-1

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 470
-Name Accounting Standards Codification
-Publisher FASB
-URI https://asc.fasb.org//470/tableOfContent

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1B
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481139/470-20-50-1B

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1B
-Subparagraph (g)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481139/470-20-50-1B

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1B
-Subparagraph (i)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481139/470-20-50-1B

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1C
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481139/470-20-50-1C

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1C
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481139/470-20-50-1C

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1C
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481139/470-20-50-1C

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1E
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481139/470-20-50-1E

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1I
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481139/470-20-50-1I

Reference 12: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1I
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481139/470-20-50-1I

Reference 13: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1I
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481139/470-20-50-1I

+ Details

Prepaid Expenses and Other Current Assets (Tables)

9 Months Ended

Sep. 30, 2023

Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]

Schedule of Prepaid Expenses and Other Current Assets

Prepaid expenses and other current assets consisted of the following as of September 30, 2023 and December 31, 2022:


(in thousands)	September 30, 2023		December 31, 2022
Prepaid expenses	$	4,910	$	6,283
Inventory returns receivable	714		1,090
Security deposits	499		463
Taxes receivable	7,304		6,420
Other receivables	3,946		908
Restricted cash	639		632
Total prepaid expenses and other current assets	$	18,012	$	15,796

Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
Income Taxes (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Income Tax Disclosure [Abstract]
Income tax provision (benefit)	$ 134	$ (153)	$ 631	$ 1,953
Effective tax rate (as percent)	0.40%	(0.60%)	0.70%	2.60%

- Definition

Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

+ References + Details

Fair Value Measurements (Tables)

9 Months Ended

Sep. 30, 2023

Fair Value Disclosures [Abstract]

Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis

The following table summarizes, for assets measured at fair value, the respective fair value and classification by level of input within the fair value hierarchy as of September 30, 2023. We had no liabilities measured at fair value as of September 30, 2023.


	September 30, 2023
(in thousands)	Level 1		Level 2		Level 3		Total
Assets
Money market funds	$	82,000	$	—	$	—	$	82,000
	$	82,000	$	—	$	—	$	82,000

COVER - shares	9 Months Ended
COVER - shares	Sep. 30, 2023	Nov. 01, 2023
Document Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2023
Document Transition Report	false
Entity File Number	001-40963
Entity Registrant Name	Allbirds, Inc.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	47-3999983
Entity Address, Address Line One	730 Montgomery Street
Entity Address, City or Town	San Francisco
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	94111
City Area Code	628
Local Phone Number	225-4848
Title of 12(b) Security	Class A Common Stock, $0.0001 par value per share
Trading Symbol	BIRD
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	true
Entity Ex Transition Period	false
Entity Shell Company	false
Document Fiscal Year Focus	2023
Document Fiscal Period Focus	Q3
Current Fiscal Year End Date	--12-31
Entity Central Index Key	0001653909
Amendment Flag	false
Class A Common Stock
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		100,303,748
Class B Common Stock
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		52,547,761

Leases

9 Months Ended

Sep. 30, 2023

Leases [Abstract]

Leases

We lease various office and retail spaces under non-cancelable operating leases with various expiration dates through fiscal 2034, certain of which contain renewal provisions. These renewal provisions are not reasonably certain to be exercised and therefore are not factored into the determination of lease payments. We have no lease agreements that are classified as finance leases.

The components of lease costs, recognized as selling, general, and administrative expense in the condensed consolidated statements of operations and comprehensive loss, along with the weighted-average lease term and weighted-average discount rate for operating leases, are as follows:


	Three Months Ended September 30,				Nine Months Ended September 30,
(in thousands, except for lease term and discount rate)	2023		2022		2023			2022
Operating lease costs	$	4,666	$	4,397	$	13,884		$	11,945
Variable lease costs	56		55		168			169
Short-term lease costs	3		187		73			444
Sublease income	(57)		—		(110)			—
Total lease costs	$	4,668	$	4,639	$	14,015		$	12,558

					September 30, 2023			September 30, 2022
Weighted-average remaining lease term (in years)					7.29			3.97
Weighted-average discount rate					5.55		%	4.32		%

Supplemental cash flow information related to operating leases are as follows:


	Three Months Ended September 30,				Nine Months Ended September 30,
(in thousands)	2023		2022		2023		2022
Cash paid for amounts included in the measurement of operating lease liabilities	$	4,246	$	3,850	$	10,371	$	10,207
Right-of-use assets obtained in exchange for new operating lease liabilities	24		8,201		8,480		33,514

Future minimum lease payments under non-cancelable operating leases with initial lease terms in excess of one year, included in our lease liabilities as of September 30, 2023, are as follows:


(in thousands)	Operating Lease Payments (1)
Fiscal year ended December 31,
2023	$	5,069
2024	19,755
2025	19,558
2026	18,088
2027 and after	69,983
Total undiscounted operating lease payments	$	132,453
Less: imputed discount	25,450
Total operating lease liabilities	$	107,002

___________

(1) 2023 amounts as shown above are net of cash inflows for tenant improvement allowances expected to be received during the year.

Leases (Tables)

9 Months Ended

Sep. 30, 2023

Leases [Abstract]

Schedule of Lease Information


	Three Months Ended September 30,				Nine Months Ended September 30,
(in thousands, except for lease term and discount rate)	2023		2022		2023			2022
Operating lease costs	$	4,666	$	4,397	$	13,884		$	11,945
Variable lease costs	56		55		168			169
Short-term lease costs	3		187		73			444
Sublease income	(57)		—		(110)			—
Total lease costs	$	4,668	$	4,639	$	14,015		$	12,558

					September 30, 2023			September 30, 2022
Weighted-average remaining lease term (in years)					7.29			3.97
Weighted-average discount rate					5.55		%	4.32		%

Supplemental cash flow information related to operating leases are as follows:


	Three Months Ended September 30,				Nine Months Ended September 30,
(in thousands)	2023		2022		2023		2022
Cash paid for amounts included in the measurement of operating lease liabilities	$	4,246	$	3,850	$	10,371	$	10,207
Right-of-use assets obtained in exchange for new operating lease liabilities	24		8,201		8,480		33,514

Schedule of Commitments for Minimum Lease Payments Under Noncancelable Operating Leases

Future minimum lease payments under non-cancelable operating leases with initial lease terms in excess of one year, included in our lease liabilities as of September 30, 2023, are as follows:


(in thousands)	Operating Lease Payments (1)
Fiscal year ended December 31,
2023	$	5,069
2024	19,755
2025	19,558
2026	18,088
2027 and after	69,983
Total undiscounted operating lease payments	$	132,453
Less: imputed discount	25,450
Total operating lease liabilities	$	107,002

___________

(1) 2023 amounts as shown above are net of cash inflows for tenant improvement allowances expected to be received during the year.

Net Loss Per Share - Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share (Details) - shares	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share (in shares)	26,754,360	21,513,407
Outstanding stock options
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share (in shares)	14,743,096	15,590,268
Common stock warrants
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share (in shares)	0	0
2021 ESPP
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share (in shares)	43,692	53,803
RSUs
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share (in shares)	11,442,464	5,081,676
PSUs
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share (in shares)	525,108	787,660

Stock-Based Compensation - Schedule of Share-based Payment Arrangement, Restricted Stock Unit, Activity (Details) - RSUs	9 Months Ended
	Sep. 30, 2023 $ / shares shares
Number of Shares
Unvested at beginning of period (in shares) \| shares	4,788,964
Granted (in shares) \| shares	10,308,183
Vested (in shares) \| shares	(1,690,736)
Forfeited (in shares) \| shares	(1,963,947)
Unvested at end of period(in shares) \| shares	11,442,464
Weighted-Average Grant Date Fair Value per Share
Unvested at beginning of period (in dollars per share) \| $ / shares	$ 4.86
Granted (in dollars per share) \| $ / shares	1.65
Vested (in dollars per share) \| $ / shares	4.16
Forfeited (in dollars per share) \| $ / shares	3.92
Unvested at end of period (in dollars per share) \| $ / shares	$ 2.23

Stockholders’ Equity

9 Months Ended

Sep. 30, 2023

Equity [Abstract]

Stockholders’ Equity

As of September 30, 2023 and December 31, 2022, we were authorized to issue 2,220,000,000 shares of capital stock, comprised of 2,000,000,000 shares of Class A common stock, 200,000,000 shares of Class B common stock, and 20,000,000 shares of preferred stock. Each class had a par value of $0.0001 per share.

Preferred Stock

As of September 30, 2023 and December 31, 2022, there were no shares of preferred stock issued and outstanding. Our board of directors may, without further action by our stockholders, fix the rights, preferences, privileges, and restrictions of up to an aggregate of 20,000,000 shares of preferred stock in one or more series and authorize their issuance. The voting, dividend, and liquidation rights of the holders of common stock are subject to and qualified by the rights, powers, and preferences of the holders of preferred stock.

Common Stock

As of September 30, 2023 and December 31, 2022, we had two classes of common stock: Class A common stock and Class B common stock. Each class had a par value of $0.0001.

Voting—Holders of Class A common stock are entitled to one vote per share on all matters to be voted upon by the stockholders, and holders of Class B common stock are entitled to 10 votes per share on all matters to be voted upon by the stockholders. The holders of our Class A common stock and Class B common stock generally vote together as a single class on all matters submitted to a vote of our stockholders, unless otherwise required by Delaware law or our amended and restated certificate of incorporation. Delaware law could require either holders of our Class A common stock or Class B common stock to vote separately as a single class in the following circumstances: (i) if we were to seek to amend our amended and restated certificate of incorporation to increase or decrease the par value of a class of our capital stock, then that class would be required to vote separately to approve the proposed amendment; and (ii) if we were to seek to amend our amended and restated certificate of incorporation in a manner that alters or changes the powers, preferences or special rights of a class of our capital stock in a manner that affected its holders adversely, then that class would be required to vote separately to approve the proposed amendment. As a result, in these limited instances, the holders of a majority of the Class A common stock could defeat an amendment to our amended and restated certificate of incorporation. Our amended and restated certificate of incorporation does not provide for cumulative voting for the election of directors.

Dividends—Holders of Class A common stock and Class B common stock are entitled to ratably receive dividends if, as and when declared from time to time by our board of directors at its own discretion out of funds legally available for that purpose, after payment of dividends required to be paid on outstanding preferred stock, if any. Under Delaware law, we can only pay dividends either out of “surplus” or out of the current or the immediately preceding year’s net profits. Surplus is defined as the excess, if any, at any given time, of the total assets of a corporation over its total liabilities and statutory capital. The value of a corporation’s assets can be measured in a number of ways and may not necessarily equal their book value.

Right to Receive Liquidation Distributions—Upon our dissolution, liquidation or winding-up, the assets legally available for distribution to our stockholders are distributable ratably among the holders of our Class A common stock and Class B common stock, subject to prior satisfaction of all outstanding debt and liabilities and the preferential rights and payment of liquidation preferences, if any, on any outstanding shares of preferred stock.

Conversion—Each share of our Class B common stock is convertible at any time at the option of the holder into one share of our Class A common stock. Each share of our Class B common stock will convert automatically into one share of our Class A common stock upon any transfer, whether or not for value, except for (i) certain permitted transfers to entities, to the extent the transferor retains sole dispositive power and exclusive voting control with respect to the shares of Class B common stock, and (ii) certain other permitted transfers described in our amended and restated certificate of incorporation. In addition, if held by a natural person (including a natural person serving in a sole trustee capacity), each share of our Class B common stock will convert automatically into one share of our Class A common stock upon the death or incapacity of such natural person as described in our amended and restated certificate of incorporation. All outstanding shares of our Class B common stock will convert automatically into an equivalent number of shares of our Class A common stock upon the final conversion date, defined as the later of (a) the last trading day of the fiscal quarter immediately following the tenth anniversary of September 21, 2021 and (b) the date fixed by our board of directors that is no less than 61 days and no more than 180 days following the date on which the outstanding shares of Class B common stock first represent less than 10% of the aggregate number of the then outstanding shares of Class A common stock and Class B common stock (except if the final conversion date determined according to (a) or (b) would otherwise occur on or after the record date of any meeting of stockholders and before or at the time the vote at such meeting is taken, then the final conversion date shall instead be the last trading day of the fiscal quarter during which such vote was taken).

Other Matters—The Class A common stock and Class B common stock have no preemptive rights pursuant to the terms of our amended and restated certificate of incorporation and our amended and restated bylaws. There are no redemption or sinking fund provisions applicable to the Class A common stock and Class B common stock. All outstanding shares of our Class A common stock are fully paid and non-assessable.

Shares of common stock reserved for future issuance as of September 30, 2023 and December 31, 2022 consist of the following:


	September 30, 2023	December 31, 2022
2015 Equity Incentive Plan:
Options issued and outstanding	9,525,973	12,700,367
Shares available for future option grants	—	—
2021 Equity Incentive Plan:
Options issued and outstanding	5,217,123	2,687,819
Restricted stock units outstanding	11,442,464	4,788,964
Performance stock units outstanding	525,108	787,660
Shares available for future grants	13,291,122	13,236,891
2021 Employee Stock Purchase Plan:
Shares available for future grants	5,359,971	4,091,248
Total shares of common stock reserved for future issuance	45,361,761	38,292,949

- Definition

The entire disclosure for equity.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
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-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Subparagraph (b)
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
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-URI https://asc.fasb.org//1943274/2147481112/505-10-50-13

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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Reference 6: http://www.xbrl.org/2003/role/disclosureRef
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-Name Accounting Standards Codification
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Reference 7: http://www.xbrl.org/2003/role/disclosureRef
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-Paragraph 6
-Subparagraph (a)
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Reference 8: http://www.xbrl.org/2003/role/disclosureRef
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-Paragraph 1
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Reference 9: http://www.xbrl.org/2003/role/disclosureRef
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-Paragraph 1
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Reference 10: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 11: http://www.xbrl.org/2003/role/disclosureRef
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Reference 13: http://www.xbrl.org/2003/role/disclosureRef
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Reference 14: http://www.xbrl.org/2003/role/disclosureRef
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Reference 15: http://www.xbrl.org/2003/role/disclosureRef
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Reference 16: http://www.xbrl.org/2003/role/disclosureRef
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Reference 17: http://www.xbrl.org/2003/role/disclosureRef
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Reference 18: http://www.xbrl.org/2003/role/disclosureRef
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Reference 19: http://www.xbrl.org/2003/role/disclosureRef
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+ Details

Warrants - Schedule of Warrants and Rights Outstanding, Activity (Details) - shares	3 Months Ended	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2022
Class of Warrant or Right [Roll Forward]
Outstanding, beginning of period (in shares)	5,114	30,684
Exercises during the period (in shares)	5,114	30,684
Outstanding, end of period (in shares)	0	0

Commitment and Contingencies (Details)	Jul. 25, 2023 lawsuit
Commitments and Contingencies Disclosure [Abstract]
Number of suits filed	2

Stock Transactions	9 Months Ended
Stock Transactions	Sep. 30, 2023
Equity [Abstract]
Stock Transactions	Stock Transactions On November 19, 2018, we received a promissory note from an employee in consideration for the early exercise of 220,000 shares of common stock options. The promissory note is secured by the underlying shares of common stock and, prior to amendment, bore interest at 2.86% per annum. In June 2023, the note was amended to no longer accrue interest after March 31, 2023 and to extend the maturity date to October 1, 2025. As of September 30, 2023, the promissory note remained outstanding. Since the note is a limited recourse note, the note receivable is not reflected in our condensed consolidated balance sheets as of September 30, 2023 and December 31, 2022.

Other Assets (Tables)

9 Months Ended

Sep. 30, 2023

Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]

Schedule of Other Assets

Other assets consisted of the following as of September 30, 2023 and December 31, 2022:


(in thousands)	September 30, 2023		December 31, 2022
Investment in equity securities	$	2,000	$	2,250
Security deposits	3,501		4,417
Intangible assets	94		133
Debt issuance costs	20		57
Deferred tax assets	1,001		1,001
Total other assets	$	6,616	$	7,858

Benefit Plan	9 Months Ended
Benefit Plan	Sep. 30, 2023
Retirement Benefits [Abstract]
Benefit Plan	Benefit PlanWe sponsor a 401(k) defined contribution plan covering eligible employees who elect to participate. We are allowed to make discretionary profit sharing and matching contributions as defined in the plan and as approved by our board of directors. No discretionary profit-sharing contributions were made for the three and nine months ended September 30, 2023 and 2022. We made $0.3 million and $1.1 million in matching contributions for the three and nine months ended September 30, 2023, respectively, and $0.4 million and $1.0 million for the three and nine months ended September 30, 2022, respectively. We have no intention to terminate the plan.

Subsequent Events	9 Months Ended
Subsequent Events	Sep. 30, 2023
Subsequent Events [Abstract]
Subsequent Events	Subsequent EventsWe have evaluated events occurring through November 8, 2023, the date the condensed consolidated financial statements were available for issuance, and have determined there are no subsequent events that require disclosure in these condensed consolidated financial statements.

Fair Value Measurements

9 Months Ended

Sep. 30, 2023

Fair Value Disclosures [Abstract]

Fair Value Measurements

Items Measured at Fair Value on a Recurring Basis

Money Market Funds—We hold cash in a U.S. treasury securities money market fund. The funds are classified as cash and cash equivalents on our condensed consolidated balance sheet as of September 30, 2023 and December 31, 2022 and represent Level 1 assets on the fair value hierarchy.


	September 30, 2023
(in thousands)	Level 1		Level 2		Level 3		Total
Assets
Money market funds	$	82,000	$	—	$	—	$	82,000
	$	82,000	$	—	$	—	$	82,000

Items Measured at Fair Value on a Non-Recurring Basis

Equity Investments—Our equity investments in NFW and Noho ESG represent non-marketable equity securities in privately held companies that do not have a readily determinable fair value and are accounted for under the measurement alternative in ASC 321. The investments are accounted for at cost and adjusted based on observable price changes from orderly transactions for identical or similar investments of the same issuer or impairment. During the three and nine months ended September 30, 2023 and 2022, there were no observable price changes or impairments for our NFW investment. We recognized a $0.1 million loss for our investment in Noho ESG during the nine months ended September 30, 2023, as described in Note 7. The carrying values of our investments were $2.0 million and $2.3 million as of September 30, 2023 and December 31, 2022, respectively.

- Definition

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

+ References + Details

Significant Accounting Policies

9 Months Ended

Sep. 30, 2023

Accounting Policies [Abstract]

Significant Accounting Policies

Basis of Preparation—The accompanying unaudited condensed consolidated financial statements have been presented in U.S. dollars and prepared in accordance with United States generally accepted accounting principles (“GAAP”) for interim financial information and applicable rules and regulations of the U.S. Securities and Exchange Commission (“SEC”) regarding interim financial information. Certain information and disclosures normally included in consolidated financial statements prepared in accordance with GAAP have been condensed or omitted. These unaudited condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements and accompanying notes contained in the Annual Report on Form 10-K for the fiscal year ended December 31, 2022, filed with the SEC on March 10, 2023 (“Form 10-K”).

In our opinion, the accompanying unaudited condensed interim financial statements include all adjustments, consisting of a normal recurring nature, which are necessary for a fair presentation of the financial position, operating results and cash flows for the periods presented. The condensed consolidated balance sheet as of December 31, 2022 has been derived from the audited financial statements at that date, but does not include all of the disclosures required by GAAP.

Certain monetary amounts, percentages, and other figures included elsewhere in these condensed consolidated financial statements and accompanying notes have been subject to rounding adjustments. As such, figures shown as totals in certain tables may not be the arithmetic aggregation of the figures that precede them, and figures expressed as percentages in the text may not total 100% or, as applicable, when aggregated may not be the arithmetic aggregation of the percentages that precede them.

Certain prior period reclassifications have been made in the condensed consolidated statements of operations and comprehensive loss to conform to the current period presentation. Specifically, for the three and nine months ended September 30, 2022, $0.7 million of selling, general and administrative expense was reclassified to restructuring expense in the condensed consolidated statements of operations and comprehensive loss. Such reclassification had no impact to our previously reported condensed consolidated balance sheet or condensed consolidated statement of cash flows.

Principles of Consolidation—The condensed consolidated financial statements include the accounts of Allbirds, Inc. and our wholly owned subsidiaries. All intercompany balances and transactions have been eliminated in consolidation.

Use of Estimates—The preparation of financial statements in conformity with GAAP requires us to make estimates and assumptions that affect the reported amounts of assets and liabilities at the date of the financial

statements and reported amounts of revenues and expenses during the reporting period. Actual results could differ from these estimates.

Risks and Uncertainties—We continue to monitor and respond to evolving developments about recent macroeconomic events, including elevated inflation, the U.S. Federal Reserve raising interest rates, bank failures, supply chain disruptions, fluctuations in currency exchange rates, geopolitical conflicts, and the COVID-19 pandemic, which have led to further economic uncertainty in the global economy. These macroeconomic conditions have had and are likely to continue to have adverse consequences on consumer spending, including the buying patterns of our customers and prospective customers. The conditions caused by the aforementioned recent macroeconomic events could affect the rate of consumer spending and could adversely affect demand for our products, lengthen our sales cycles, reduce the value of inventory, reduce expected spending from new customers, and affect our suppliers, all of which could adversely affect our business, results of operations, and financial condition.

As of the date of issuance of the financial statements we are not aware of any specific event or circumstance related to the aforementioned macroeconomic events that would require us to update our estimates or judgments or adjust the carrying value of our assets or liabilities. Actual results could differ from those estimates and any such differences may be material to the condensed consolidated financial statements.

Segments—Operating segments are defined as components of an entity for which separate financial information is available and that is regularly reviewed by our chief operating decision maker (“CODM”) in deciding how to allocate resources to an individual segment and in assessing performance. Prior to May 4, 2023, our CODMs were our co-Chief Executive Officers. On May 4, 2023, Timothy Brown, transitioned from his co-Chief Executive Officer role to Chief Innovation Officer, a non-executive role, and Joseph Zwillinger, our other co-Chief Executive Officer, was appointed our Chief Executive Officer. As a result, we performed an evaluation to determine our CODM. We determined that Joseph Zwillinger, Chief Executive Officer, was our CODM after May 4, 2023 and as of September 30, 2023.

We operate in one operating segment and one reportable segment, as the CODM reviews financial information presented on an aggregate basis for purposes of making operating decisions, allocating resources, and evaluating financial performance. There was no change in our operating or reportable segments as a result of the change in CODM during the second quarter of 2023.

Foreign Currency Transactions—Our reporting currency is the U.S. dollar. The functional currency for each subsidiary included in these condensed consolidated financial statements that is domiciled outside of the United States is generally the applicable local currency of that country or the U.S. dollar. The translation of foreign currencies into U.S. dollars is performed for assets and liabilities using current foreign currency exchange rates in effect at the balance sheet date and for revenues and expense accounts using average foreign currency exchange rates during the period. Capital accounts are translated at historical foreign currency exchange rates. Translation gains and losses are included in stockholders’ equity as a component of accumulated other comprehensive income or loss. Adjustments that arise from foreign currency exchange rate changes on transactions denominated in a currency other than the functional currency are included in other income or expense on the condensed consolidated statements of operations and comprehensive loss.

Cash, Cash Equivalents, and Restricted Cash—We consider all highly liquid investments with an original maturity date of three months or less as cash equivalents. Cash and cash equivalents are comprised primarily of domestic and foreign bank accounts and money market funds. These cash and cash equivalents are valued based on Level 1 inputs, which consist of quoted prices in active markets. We place our cash and cash equivalents with several high credit quality financial institutions which, at times, may be in excess of Federal Deposit Insurance Corporation (“FDIC”) insurance limits. We have not experienced any losses in such accounts and periodically evaluate the credit worthiness of the financial institutions. Our foreign bank accounts are not subject to FDIC insurance.

Restricted cash serves as collateral for a bond with the United States Customs and Border Protection (“CBP”), which allows us to take possession of our inventory before all formalities with the CBP are completed for imported

products. Restricted cash is included in prepaid expenses and other current assets on the condensed consolidated balance sheets.

Accounts Receivable—Accounts receivable consist primarily of amounts due from customers, which results from sales to customers including credit card deposits in transit at the balance sheet date, the majority of which are settled within two to three business days, and wholesale accounts receivable, which are settled per the terms of the sale. Wholesale account receivables were $2.3 million and $6.3 million as of September 30, 2023 and December 31, 2022, respectively. Credit card receivables were $2.1 million as of September 30, 2023 and December 31, 2022.

Inventory—Inventory consists of finished goods, stated at the lower of cost or net realizable value. We value our inventory using the weighted-average cost method and include product costs from our suppliers, freight, import duties and other landing costs.

We periodically review inventory and make provisions as necessary to appropriately value end of life, slow-moving, damaged, and excess inventory. To determine if the value of inventory requires a write-down, we estimate the net realizable value of inventory by considering current and anticipated demand, customer preferences and buying trends, and the age of the merchandise. Inventory write-downs are recognized as cost of revenue in the condensed consolidated statements of operations and comprehensive loss.

As of September 30, 2023 and December 31, 2022, we recorded an inventory reserve to reduce the value of our inventory by $11.4 million and $8.3 million, respectively, within inventory on the condensed consolidated balance sheets. Related to these inventory reserves, and also including actual shrinkage which is recorded throughout the year based on the results of physical inventory counts and donations, we recorded $1.1 million and $9.1 million as costs of revenue for the three and nine months ended September 30, 2023 and $2.7 million and $14.3 million for the three and nine months ended September 30, 2022, respectively.

Revenue Recognition—Our primary source of revenue is from sales of footwear and apparel products. We recognize revenue when control passes to the customer. This occurs at the time products are shipped to digital and wholesale customers, and at the point of sale for retail customers, which is when our performance obligation is satisfied. For the three and nine months ended September 30, 2023, we recognized $1.0 million and $3.0 million of revenue, respectively, that was deferred as of December 31, 2022, and for the three and nine months ended September 30, 2022, we recognized $1.0 million and $3.1 million, respectively, of revenue that was deferred as of December 31, 2021. As of September 30, 2023 and December 31, 2022, we had $0.4 million in cash collections of purchases via our digital channel which had not yet shipped, and $3.5 million and $3.6 million, respectively, in gift card liabilities included in deferred revenue in the condensed consolidated balance sheets. We had deferred revenue balances of $3.9 million and $3.4 million as of September 30, 2023 and September 30, 2022, respectively. The amounts as of September 30, 2023 are expected to be recognized over the next 12 months.

We record a reserve for estimated product returns, based upon historical return trends, in each reporting period as an offsetting decrease of net revenue, with an increase to our sales-refund reserve in accrued expenses. We have also recorded a related inventory returns receivable in prepaid expenses and other current assets, with an offsetting decrease to cost of revenue, as of September 30, 2023 and December 31, 2022 in the condensed consolidated balance sheets.

The following table disaggregates our net revenue by geographic area, where no individual foreign country contributed in excess of 10% of net revenue for the three and nine months ended September 30, 2023 and 2022. We recognized the following net revenue by geographic area based on the primary shipping address of the customer where the sale was made in our digital and wholesale channels, and based on the physical store location where the sale was made at a retail store:


	Three Months Ended September 30,				Nine Months Ended September 30,
(in thousands)	2023		2022		2023		2022
United States	$	43,671	$	56,083	$	135,555	$	164,229
International	13,573		16,568		46,520		49,359
Total net revenue	$	57,244	$	72,651	$	182,075	$	213,588

Fair Value Measurements—Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) 820, Fair Value Measurements, defines fair value, establishes a framework for measuring fair value under GAAP, and enhances disclosures about fair value measurements. It clarifies that fair value is an exit price, representing the amount that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants. As such, fair value is a market-based measurement that should be determined based on assumptions that market participants would use in pricing an asset or liability. As a basis for considering such assumptions, ASC 820 establishes a three-tier value hierarchy, which prioritizes the inputs used in measuring fair value as follows:

Level 1—Observable inputs, such as quoted prices in active markets

Level 2—Inputs other than the quoted prices in active markets that are observable either directly or indirectly

Level 3—Unobservable inputs in which there is little or no market data, which requires us to develop our own assumptions.

This hierarchy requires us to use observable market data, when available, and to minimize the use of unobservable inputs when determining fair value. We record cash and cash equivalents, accounts receivable, accounts payable, and accrued expenses at cost. The carrying values of these instruments approximate their fair value due to their short‐term maturities. We hold certain assets that are required to be measured at fair value on both a recurring and non-recurring basis, which are outlined in Note 9, Fair Value Measurements.

Impairment of Long-Lived Assets—We evaluate the recoverability of property and equipment, operating lease right-of-use assets, and other long-lived assets, including identifiable intangible assets with definite lives, whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. Long-lived assets are reviewed for recoverability at the lowest level in which there are identifiable cash flows (asset group). The asset group is typically at the country-level for store assets and the corporate-level for corporate assets. The carrying amount of a country asset group includes stores’ operating lease right-of-use assets and property and equipment, primarily leasehold improvements. Recoverability of assets held and used is measured by comparing the carrying amount of an asset or an asset group to the estimated undiscounted future net cash flows expected to be generated by the asset or asset group. If the carrying amount of an asset or asset group exceeds these estimated future cash flows, an impairment charge is recognized as the amount by which the carrying amount of the assets exceeds the fair value of the asset or asset group, based on estimated discounted net future cash flows. Assumptions used in these forecasts are consistent with internal planning, and include revenue growth rates, gross margins, and operating expense in relation to the current economic environment and our future expectations, competitive factors in our various markets, inflation, revenue trends and other relevant economic factors that may impact the asset group under evaluation.

There is uncertainty in the projected undiscounted future cash flows used in our impairment review analysis, which requires the use of estimates and assumptions. If our actual performance does not achieve our projections, or if the assumptions used change in the future, we may be required to recognize impairment charges in future periods, and any such charges could be material. We determined that a non-cash impairment charge was not necessary in the quarter ended September 30, 2023, based on our future cash flow estimates versus the net carrying value of our long-lived assets.

Restructuring Charges—In the first quarter of 2023, we announced a strategic transformation plan designed to improve our revenue trend, as well as improve capital efficiency and drive profitability in the business. As part of this effort, we have incurred professional fees, severance and other employee-related benefits, and other related

charges which are included within restructuring expense in the condensed consolidated statements of operations and comprehensive loss.

The following table presents a roll-forward of our restructuring charges, which are included within accrued expenses and other current liabilities in the condensed consolidated balance sheets:


(in thousands)	Professional fees and other related charges		Severance and other employee-related benefits
Balance as of June 30, 2023	$	89	$	353
Charges	1,230		4
Cash Payments	(382)		(357)
Balance as of September 30, 2023	$	937	$	—


(in thousands)	Professional fees and other related charges		Severance and other employee-related benefits
Balance as of December 31, 2022	$	—	$	—
Charges	5,158		357
Cash Payments	(4,221)		(357)
Balance as of September 30, 2023	$	937	$	—

Emerging Growth Company—As an “emerging growth company,” the Jumpstart Our Business Startups Act, or JOBS Act, allows us to delay adoption of new or revised accounting pronouncements applicable to public companies until such pronouncements are made applicable to private companies. For certain pronouncements, we have elected to use the adoption dates applicable to private companies. As a result, our financial statements may not be comparable to the financial statements of issuers who are required to comply with the effective date for new or revised accounting standards that are applicable to public companies.

Recently Adopted Accounting Pronouncements

In June 2016, the FASB issued ASU 2016-13, Credit Losses (Topic 326) - Measurement of Credit Losses on Financial Instruments (“ASU 2016-13”). ASU 2016-13 requires entities to use a forward-looking approach based on current expected credit losses to estimate credit losses on certain types of financial instruments, including trade and account receivables, which may result in the earlier recognition of allowance for losses. The adoption of the guidance in the first quarter of 2023 did not have a material impact on our condensed consolidated financial statements and related disclosures as of and for the nine months ended September 30, 2023.

In March 2020, the FASB issued ASU 2020-04, Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting. This guidance provides temporary optional expedients and exceptions to accounting guidance on contract modifications and hedge accounting to ease entities’ financial reporting burdens as the market transitions from the London Interbank Offered Rate (LIBOR) and other interbank offered rates to alternative reference rates. The adoption of the guidance in the first quarter of 2023 did not have a material impact on our condensed consolidated financial statements and related disclosures as of and for the nine months ended September 30, 2023.

Recently Issued Accounting Pronouncements

In August 2020, the FASB issued ASU No. 2020-06, Accounting for Convertible Instruments and Contracts in an Entity's Own Equity, which simplifies the accounting for certain convertible instruments, amends the guidance on derivative scope exceptions for contracts in an entity's own equity, and modifies the guidance on diluted earnings per share calculations as a result of these changes. The guidance is effective for our fiscal years beginning after December 15, 2023, including interim periods within those fiscal years. The adoption of the guidance is not expected to have a material impact on our condensed consolidated financial statements and related disclosures.

Prepaid Expenses and Other Current Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022	Sep. 30, 2022
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Prepaid expenses	$ 4,910	$ 6,283
Inventory returns receivable	714	1,090
Security deposits	499	463
Taxes receivable	7,304	6,420
Other receivables	3,946	908
Restricted cash	639	632	$ 630
Total prepaid expenses and other current assets	$ 18,012	$ 15,796

Significant Accounting Policies - Inventory (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Accounting Policies [Abstract]
Reserve to reduce inventories to net realizable value	$ 11,438		$ 11,438		$ 8,269
Inventory write-down	$ 1,100	$ 2,700	$ 9,100	$ 14,300

Significant Accounting Policies - Basis of Preparation (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Accounts, Notes, Loans and Financing Receivable [Line Items]
Selling, general, and administrative expense	$ 43,545	$ 44,644	$ 132,516	$ 125,106
Revision of Prior Period, Reclassification, Adjustment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Selling, general, and administrative expense		$ 700		$ 700

Inventory (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Inventory Disclosure [Abstract]
Finished goods	$ 91,371	$ 125,065
Reserve to reduce inventories to net realizable value	(11,438)	(8,269)
Total inventory	$ 79,933	$ 116,796

Property and Equipment - Net - Schedule of Property and Equipment (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Property, Plant and Equipment [Line Items]
Total property and equipment - gross	$ 95,401	$ 90,507
Less: accumulated depreciation and amortization	(47,300)	(36,167)
Total property and equipment - net	48,101	54,340
Leasehold improvements
Property, Plant and Equipment [Line Items]
Total property and equipment - gross	39,830	40,305
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Total property and equipment - gross	23,832	23,988
Internal-use software
Property, Plant and Equipment [Line Items]
Total property and equipment - gross	28,110	23,393
Machinery and equipment
Property, Plant and Equipment [Line Items]
Total property and equipment - gross	939	884
Computers and equipment
Property, Plant and Equipment [Line Items]
Total property and equipment - gross	$ 2,690	$ 1,937

CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 132,483	$ 167,136
Accounts receivable	5,321	9,206
Inventory	79,933	116,796
Prepaid expenses and other current assets	18,012	15,796
Total current assets	235,749	308,934
Property and equipment—net	48,101	54,340
Operating lease right-of-use assets	89,586	91,232
Other assets	6,616	7,858
Total assets	380,052	462,364
Current liabilities:
Accounts payable	12,580	12,245
Accrued expenses and other current liabilities	20,148	23,448
Current lease liabilities	14,582	10,263
Deferred revenue	3,934	4,057
Total current liabilities	51,244	50,012
Noncurrent liabilities:
Noncurrent lease liabilities	92,420	95,583
Other long-term liabilities	9	0
Total noncurrent liabilities	92,429	95,583
Total liabilities	143,673	145,595
Commitments and contingencies (Note 16)
Stockholders’ equity:
Additional paid-in capital	575,833	559,106
Accumulated other comprehensive loss	(5,049)	(3,611)
Accumulated deficit	(334,420)	(238,741)
Total stockholders’ equity	236,379	316,769
Total liabilities and stockholders’ equity	380,052	462,364
Class A Common Stock
Stockholders’ equity:
Common stock	10	10
Class B Common Stock
Stockholders’ equity:
Common stock	$ 5	$ 5

Significant Accounting Policies - Accounts Receivable (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2023	Dec. 31, 2022
Accounts, Notes, Loans and Financing Receivable [Line Items]
Wholesale accounts receivable	$ 2.3	$ 6.3
Credit card receivables	$ 2.1	$ 2.1
Minimum
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable, settlement period (in days)	2 days
Maximum
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable, settlement period (in days)	3 days

Income Taxes	9 Months Ended
Income Taxes	Sep. 30, 2023
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes Income tax provision (benefit) was $0.1 million and $0.6 million for the three and nine months ended September 30, 2023, respectively, and was ($0.2) million and $2.0 million for the three and nine months ended September 30, 2022, respectively. The effective tax rate for the three and nine months ended September 30, 2023 was 0.4% and 0.7%, respectively, and was (0.6)% and 2.6% for the three and nine months ended September 30, 2022, respectively. The changes in expense for income taxes and effective tax rate is primarily due to mix of income by geography. Our tax provision for income taxes for interim periods is determined using an estimate of our annual effective tax rate, adjusted for discrete items, if any. Each quarter, we update our estimate of the annual effective tax rate and make a year-to-date adjustment to the provision. As of September 30, 2023, we are subject to examination by various tax authorities for 2016 through 2022. During the three and nine months ended September 30, 2023, there was no material change to our uncertain tax positions. We do not expect our unrecognized tax positions to change significantly over the next twelve months.

- Definition

The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480990/946-20-50-13

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(h)(2))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480678/235-10-S99-1

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-Name Accounting Standards Codification
-Publisher FASB
-URI https://asc.fasb.org//740/tableOfContent

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 14
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482685/740-10-50-14

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 21
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482685/740-10-50-21

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 270
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482526/740-270-50-1

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 17
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482685/740-10-50-17

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SAB TOPIC 6.I.5.Q1)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479360/740-10-S99-1

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
-Subparagraph (SAB Topic 11.C)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479360/740-10-S99-2

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482603/740-30-50-2

+ Details

Stock-Based Compensation - Narrative (Details) $ / shares in Units, $ in Thousands		1 Months Ended		3 Months Ended		9 Months Ended
	Apr. 30, 2022 USD ($)	May 31, 2022 installment shares	Sep. 30, 2021 shares	Sep. 30, 2023 USD ($) $ / shares	Sep. 30, 2022 USD ($) $ / shares	Sep. 30, 2023 USD ($) $ / shares	Sep. 30, 2022 USD ($) $ / shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-average fair value of options granted (in dollars per share) \| $ / shares				$ 0.66	$ 1.80	$ 0.63	$ 2.69
Stock-based compensation expense				$ 4,690	$ 5,793	$ 15,662	$ 13,942
Unrecognized compensation cost related to unvested share-based compensation arrangements granted				9,200		9,200
RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation costs				22,000		$ 22,000
Unrecognized compensation cost, period for recognition (in years)						2 years 6 months 10 days
RSUs \| New Employees
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period (in years)						4 years
Award cliff vesting period (in years)						1 year
RSUs \| Existing Employees
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period (in years)						3 years
PSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares granted (in shares) \| shares		800,000
Number of award vesting periods \| installment		3
Total grant date fair value						$ 4,000
Stock-based compensation expense	$ 0			400	$ 600	1,300	$ 800
Unrecognized compensation costs				$ 1,400		$ 1,400
Unrecognized compensation cost, period for recognition (in years)						1 year 8 months 1 day
PSUs \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage		0.00%
PSUs \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage		150.00%
PSUs \| Tranche 1
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period (in years)		1 year
Aggregate fair value of equity instruments vested during the period						$ 1,300
PSUs \| Tranche 2
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period (in years)		2 years
Aggregate fair value of equity instruments vested during the period						1,400
PSUs \| Tranche 3
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period (in years)		3 years
Aggregate fair value of equity instruments vested during the period						$ 1,400
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost, period for recognition (in years)						2 years 10 months 28 days
2021 Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation, period for increase in shares (in years)			10 years
Percent of outstanding shares			4.00%
2021 Equity Incentive Plan \| Class A Common Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation, maximum number of shares available for issue on the exercise of incentive stock options (in shares) \| shares			100,000,000
2021 Employee Stock Purchase Plan \| 2021 ESPP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation, period for increase in shares (in years)			10 years
Percent of outstanding shares			1.00%
Stock-based compensation, number of additional shares allowable under the plan (in shares) \| shares			2,850,000
Stock-based compensation, purchase period (in months)			6 months
2021 Employee Stock Purchase Plan \| Class A Common Stock \| 2021 ESPP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation, discount percentage from market price, beginning of period			85.00%

CONDENSED CONSOLIDATED STATEMENTS OF CONVERTIBLE PREFERRED STOCK AND STOCKHOLDERS’ EQUITY - USD ($) $ in Thousands	Total	Class A Common Stock	Class B Common Stock	Common Stock Class A Common Stock	Common Stock Class B Common Stock	Additional Paid-In Capital	Accumulated Other Comprehensive Income (Loss)	Accumulated Deficit
Beginning balance (in shares) at Dec. 31, 2021				49,016,511	98,038,941
Beginning balance at Dec. 31, 2021	$ 397,004			$ 5	$ 10	$ 533,709	$ 666	$ (137,386)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercise of stock options (in shares)					1,734,516
Exercise of stock options	2,586					2,586
Exercise of common stock warrants, net of shares withheld for exercise (in shares)					25,717
Vesting of common stock warrants	843					843
Vesting of restricted stock units (in shares)				367,414
Repayment of non-recourse promissory note	539					539
Issuance of common stock under employee stock purchase plan (in shares)				171,926
Issuance of common stock under employee stock purchase plan	823					823
Conversion of Class B shares into Class A common stock (in shares)				46,661,445	(46,661,445)
Conversion of Class B shares into Class A common stock	0			$ 5	$ (5)
Stock-based compensation	14,833					14,833
Comprehensive loss	(7,763)						(7,763)
Net loss	(76,489)							(76,489)
Ending balance (in shares) at Sep. 30, 2022				96,217,296	53,137,729
Ending balance at Sep. 30, 2022	332,375			$ 10	$ 5	553,333	(7,097)	(213,876)
Beginning balance (in shares) at Jun. 30, 2022				94,397,696	54,467,089
Beginning balance at Jun. 30, 2022	354,320			$ 9	$ 6	546,346	(3,407)	(188,634)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercise of stock options (in shares)					121,576
Exercise of stock options	323					323
Exercise of common stock warrants, net of shares withheld for exercise (in shares)					3,750
Vesting of restricted stock units (in shares)				364,914
Repayment of non-recourse promissory note	539					539
Conversion of Class B shares into Class A common stock (in shares)				1,454,686	(1,454,686)
Conversion of Class B shares into Class A common stock	0			$ 1	$ (1)
Stock-based compensation	6,125					6,125
Comprehensive loss	(3,690)						(3,690)
Net loss	(25,241)							(25,241)
Ending balance (in shares) at Sep. 30, 2022				96,217,296	53,137,729
Ending balance at Sep. 30, 2022	332,375			$ 10	$ 5	553,333	(7,097)	(213,876)
Beginning balance (in shares) at Dec. 31, 2022		96,768,745	53,137,729	96,768,745	53,137,729
Beginning balance at Dec. 31, 2022	$ 316,769			$ 10	$ 5	559,106	(3,611)	(238,741)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercise of stock options (in shares)	719,579				719,579
Exercise of stock options	$ 156					156
Vesting of restricted stock units (in shares)				1,690,736
Issuance of common stock under employee stock purchase plan (in shares)				230,288
Issuance of common stock under employee stock purchase plan	233					233
Conversion of Class B shares into Class A common stock (in shares)				1,309,547	(1,309,547)
Stock-based compensation	16,339					16,339
Comprehensive loss	(1,438)						(1,438)
Net loss	(95,679)							(95,679)
Ending balance (in shares) at Sep. 30, 2023		99,999,316	52,547,761	99,999,316	52,547,761
Ending balance at Sep. 30, 2023	236,379			$ 10	$ 5	575,833	(5,049)	(334,420)
Beginning balance (in shares) at Jun. 30, 2023				98,818,595	52,547,761
Beginning balance at Jun. 30, 2023	263,846			$ 10	$ 5	570,818	(4,143)	(302,844)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercise of stock options (in shares)					405,986
Exercise of stock options	78					78
Vesting of restricted stock units (in shares)				774,735
Conversion of Class B shares into Class A common stock (in shares)				405,986	(405,986)
Stock-based compensation	4,938					4,938
Comprehensive loss	(906)						(906)
Net loss	(31,575)							(31,575)
Ending balance (in shares) at Sep. 30, 2023		99,999,316	52,547,761	99,999,316	52,547,761
Ending balance at Sep. 30, 2023	$ 236,379			$ 10	$ 5	$ 575,833	$ (5,049)	$ (334,420)

Stock-Based Compensation

9 Months Ended

Sep. 30, 2023

Share-Based Payment Arrangement [Abstract]

Stock-Based Compensation

2015 Equity Incentive Plan

In 2015, we adopted the 2015 Equity Incentive Plan (the “2015 Plan”) that authorized the granting of options for shares of common stock. Our 2015 Plan provided for the grant of incentive stock options, non-statutory stock options, stock appreciation rights, restricted stock awards, restricted stock unit (“RSU”) awards, and other stock awards. The 2015 Plan was terminated in connection with the adoption of the 2021 Equity Incentive Plan (the “2021 Plan”) in November 2021 in connection with the initial public offering (“IPO”), and we will not grant any additional awards under the 2015 Plan. However, the 2015 Plan will continue to govern the terms and conditions of the outstanding awards previously granted thereunder.

2021 Equity Incentive Plan

In September 2021, our board of directors adopted, and our stockholders approved, the 2021 Plan, which became effective in connection with the IPO in November 2021. The 2021 Plan provides for the grant of incentive stock options, nonqualified stock options, stock appreciation rights, restricted stock awards, RSU awards, performance awards, and other forms of equity compensation. In addition, the number of shares of our Class A common stock reserved for issuance under the 2021 Plan will automatically increase on January 1 of each year for a period of 10 years, beginning on January 1, 2022 and continuing through (and including) January 1, 2031, in an amount equal to 4% of the total number of share of our common stock (both Class A and Class B) outstanding on December 31 of the immediately preceding year, except that, before the date of any such increase, our board of directors may determine that the increase for such year will be a lesser number of shares. Additionally, to the extent that any stock options outstanding under the 2015 Plan expire, terminate prior to exercise, are not issued because the award is settled in cash, are forfeited because of the failure to vest, or are reacquired or withheld (or not issued) to satisfy a tax withholding obligation or the purchase or exercise price, if any, the shares of Class B common stock reserved for issuance pursuant to such equity awards will become available for issuance as shares of Class A common stock under the 2021 Plan. The maximum number of shares of our Class A common stock that may be issued on the exercise of incentive stock options under the 2021 Plan is 100,000,000 shares.

2021 Employee Stock Purchase Plan

In September 2021, our board of directors adopted, and our stockholders approved, the 2021 Employee Stock Purchase Plan (the “2021 ESPP”), which became effective in connection with the IPO in November 2021. The 2021

ESPP authorizes the issuance of shares of Class A common stock pursuant to purchase rights granted to employees. The number of shares of our Class A common stock reserved for issuance will automatically increase on January 1 of each year for a period of 10 years, beginning on January 1, 2022 and continuing through (and including) January 1, 2031, by the lesser of (1) 1% of the total number of shares of our common stock (both Class A and Class B) outstanding on December 31 of the immediately preceding year and (2) 2,850,000 shares, except that, before the date of any such increase, our board of directors may determine that such increase will be less than the amount set forth in clauses (1) and (2). The price at which Class A common stock is purchased under the 2021 ESPP is equal to 85% of the fair market value of a share of our Class A common stock on the first day of the offering period, or the date of purchase, whichever is lower. Offering periods are six months long and begin on November 3 and May 3 of each year.

Stock Options

A summary of the status of the 2015 Plan and 2021 Plan as of December 31, 2022 and September 30, 2023, and changes during the nine month period ended September 30, 2023, is presented below:


	Options Outstanding
	Number of Options	Weighted-Average Exercise Price		Weighted-Average Remaining Contractual Term (in years)	Aggregate Intrinsic Value (in thousands)
Outstanding at December 31, 2022	15,388,186	$	3.71	6.43	$	6,101
Granted	2,638,982	1.39
Exercised	(719,579)	1.75			948
Forfeited	(1,080,938)	3.83
Cancelled	(1,483,555)	4.30
Outstanding at September 30, 2023	14,743,096	3.38		6.36	1,878
Vested and exercisable at September 30, 2023	9,122,606	3.61		4.82	1,878

The weighted-average fair value of options granted during the three and nine months ended September 30, 2023 was $0.66 and $0.63, respectively, and for the three and nine months ended September 30, 2022 was $1.80 and $2.69, respectively. We calculated the fair value of each option using an expected volatility over the expected life of the option, which was estimated using the average volatility of comparable publicly traded companies. The expected life of options granted is based on the simplified method to estimate the expected life of the stock options, giving consideration to the contractual terms and vesting schedules.

The following weighted average assumptions were used for issuances during the three and nine months ended September 30, 2023 and 2022, for employees and non-employees:


	Three Months Ended September 30,				Nine Months Ended September 30,
	2023		2022		2023		2022
Risk-free interest rate	4.29	%	2.86	%	3.77	%	2.78	%
Dividend yield	—		—		—		—
Volatility	43.12	%	43.42	%	42.43	%	47.28	%
Expected lives (in years)	6.13		6.13		6.04		5.92

2021 ESPP


	Offering Period - May 3, 2023 to November 2, 2023		Offering Period - November 3, 2022 to May 2, 2023		Offering Period - May 3, 2022 to November 2, 2022		Offering Period - November 3, 2021 to May 2, 2022
Risk-free interest rate	5.08	%	4.44	%	2.97	%	1.63	%
Dividend yield	—		—		—		—
Volatility	45.59	%	43.42	%	47.15	%	63.00	%
Expected lives (years)	0.5		0.5		0.5		0.5

RSUs

After completion of the IPO in November 2021, we began granting RSUs to certain employees. The RSUs granted have service-based vesting conditions. The service-based vesting condition for awards to new employees is typically satisfied over four years, with a cliff vesting period of one year and continued vesting quarterly thereafter. The service-based vesting condition for refresh grants of RSUs to existing employees is typically satisfied over three years with vesting occurring quarterly, subject to the employees’ continued service to us. RSUs and the related stock-based compensation are recognized on a straight-line basis over the requisite service period.

RSU activity during the nine months ended September 30, 2023 was as follows:


	Number of Shares	Weighted-Average Grant Date Fair Value per Share
Unvested at December 31, 2022	4,788,964	$	4.86
Granted	10,308,183	1.65
Vested	(1,690,736)	4.16
Forfeited	(1,963,947)	3.92
Unvested at September 30, 2023	11,442,464	$	2.23

Performance Stock Units

In May 2022, we granted a target amount of 0.8 million RSUs with market-based and service-based vesting conditions (“PSUs”) to certain executives. The market vesting criteria is based on achievement of certain total shareholder return (“TSR”) results relative to the S&P Total Market Consumer Discretionary Index (the “Index”) during a one-year, two-year, and three-year performance period, respectively, beginning on June 1, 2022, and ending on May 31, 2025. The market condition allows for a range of vesting from 0% to 150% of the target amount, depending on the relative TSR achieved by us against the Index. In addition to the market condition, these PSUs are subject to the continuing service of the executives and vest in three equal annual installments. The fair value of PSUs is measured on the grant date using a Monte Carlo simulation model. Each of the three performance periods is considered an individual tranche of the award (referred to as “Tranche 1,” “Tranche 2” and “Tranche 3,”respectively).


	Number of Shares	Grant Date Fair Value per Share		Requisite Service Period
Tranche 1	262,553	$	4.77	June 1, 2022 - May 31, 2023
Tranche 2	262,553	$	5.16	June 1, 2022 - May 31, 2024
Tranche 3	262,554	$	5.41	June 1, 2022 - May 31, 2025

The total grant date fair value of the awards was determined to be $4.0 million, with each tranche of the awards representing $1.3 million, $1.4 million, and $1.4 million of the total expense, respectively. Stock-based compensation expense related to PSUs is recognized on a straight-line basis over their requisite service periods, regardless of whether the market condition is ultimately satisfied. Stock-based compensation expense is not reversed if the achievement of the market condition does not occur. We recognized stock-based compensation expense of

$0.4 million and $1.3 million for the three and nine months ended September 30, 2023, respectively, and $0.6 million and $0.8 million for the three and nine months ended September 30, 2022, respectively, as selling, general and administrative expense in the condensed consolidated statements of operations and comprehensive loss related to these awards. We recognized no stock-based compensation expense for these awards prior to May 2022.

PSU activity during the nine months ended September 30, 2023 was as follows:


	Target Number of Shares	Weighted-Average Grant Date Fair Value per Share
Unvested at December 31, 2022	787,660	$	5.11
Granted	—	—
Vested	—	—
Forfeited	(262,552)	$	4.77
Unvested at September 30, 2023	525,108	$	5.29

Stock-Based Compensation Expense


	Three Months Ended September 30,				Nine Months Ended September 30,
(in thousands)	2023		2022		2023		2022
Stock-based compensation, net of amounts capitalized	$	4,690	$	5,793	15,662		13,942
Capitalized stock-based compensation	248		333		677		892
Total stock-based compensation	$	4,938	$	6,126	$	16,339	$	14,834

As of September 30, 2023, there was approximately $9.2 million of total unrecognized compensation cost related to unvested stock options granted under both equity incentive plans, which is expected to be recognized over the weighted-average remaining vesting period of approximately 2.91 years. There was approximately $22.0 million of total unrecognized compensation cost related to outstanding unvested RSUs under the 2021 Plan, which is expected to be recognized over the weighted-average remaining vesting period of approximately 2.53 years. There was approximately $1.4 million of total unrecognized compensation cost related to outstanding unvested PSUs under the 2021 Plan, which is expected to be recognized over the weighted-average remaining vesting period of approximately 1.67 years.

Stock Transactions (Details) - shares		9 Months Ended
Stock Transactions (Details) - shares	Nov. 19, 2018	Sep. 30, 2023
Debt Instrument [Line Items]
Common stock options exercised (in shares)	220,000	719,579
Promissory Note
Debt Instrument [Line Items]
Interest rate (as percent)	2.86%

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

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-Topic 835
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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+ Details

Property and Equipment - Net - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Property, Plant and Equipment [Abstract]
Depreciation and amortization expense	$ 5.2	$ 4.1	$ 15.3	$ 11.2

Commitments and Contingencies	9 Months Ended
Commitments and Contingencies	Sep. 30, 2023
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies Legal Proceedings We are subject to various claims and legal proceedings that arise in the ordinary course of our business activities. Although the outcome of any legal proceedings cannot be predicted with certainty, as of September 30, 2023, our ultimate liability, if any, is not expected to have a material effect on our financial position or operations. On April 13, 2023, and on May 16, 2023, we and certain of our executive officers and directors were named as defendants in two substantially similar securities class action lawsuits, captioned Shnayder v. Allbirds, Inc., et al., Case No. 23-cv-01811-AMO and Delgado v. Allbirds, Inc., et al., Case No. 23-cv-02372-AMO, filed in the United States District Court for the Northern District of California. These lawsuits allege that we violated Sections 10(b) and 20(a) of the Securities and Exchange Act of 1934 and U.S. Securities and Exchange Commission Rule 10b-5, 17 C.F.R. § 240.10b-5, promulgated thereunder, and Sections 11 and 15 of the Securities Act of 1933 by making materially false and/or misleading statements about our business, operations and prospects. The plaintiffs seek damages in an unspecified amount. On July 25, 2023, the court entered an order consolidating the two cases, appointing lead plaintiffs, and approving lead plaintiffs’ selection of lead counsel. On September 15, 2023, lead plaintiffs filed a consolidated amended complaint against the same group of defendants and asserting the same claims. We filed a motion to dismiss the consolidated complaint on November 3, 2023. We intend to vigorously defend against this lawsuit. On October 3, 2023, we and certain of our executive officers and directors were named as defendants in a shareholder derivative suit, captioned Park v. Zwillinger, et al., Case No. 23-cv-01092-CFC, filed in the United States District Court for the District of Delaware. This lawsuit alleges violations of Section 14(a) of the Exchange Act, contribution under Section 21D of the Exchange Act, breach of fiduciary duties, and aiding and abetting based on allegations that are substantially similar to those asserted in the securities class action. On October 13, 2023, we and certain of our past and current executive officers and directors were named as defendants in a substantially similar shareholder derivative suit, captioned Junker v. Zwillinger, et al., Case No. 23-cv-01152-CFC, filed in the United States District Court for the District of Delaware. This lawsuit alleges breach of fiduciary duties, unjust enrichment, violations of Section 10(b) of the Exchange Act, contribution under Section 11(f) of the Securities Act and Section 21D of the Exchange Act, and waste of corporate assets based on allegations that are substantially similar to those asserted in the securities class action. We intend to vigorously defend against these lawsuits.

Inventory (Tables)

9 Months Ended

Sep. 30, 2023

Inventory Disclosure [Abstract]

Schedule of Inventory

Inventory consisted of the following as of September 30, 2023 and December 31, 2022:


(in thousands)	September 30, 2023		December 31, 2022
Finished goods	$	91,371	$	125,065
Reserve to reduce inventories to net realizable value	(11,438)		(8,269)
Total inventory	$	79,933	$	116,796

Leases - Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Leases [Abstract]
Cash paid for amounts included in the measurement of operating lease liabilities	$ 4,246	$ 3,850	$ 10,371	$ 10,207
Right-of-use assets obtained in exchange for new operating lease liabilities	$ 24	$ 8,201	$ 8,480	$ 33,514

Stockholders’ Equity - Schedule of Common Stock Reserved for Future Issuance (Details) - shares	Sep. 30, 2023	Dec. 31, 2022
Class of Stock [Line Items]
Options issued and outstanding (in shares)	14,743,096	15,388,186
Total shares of common stock reserved for future issuance (in shares)	45,361,761	38,292,949
2015 Equity Incentive Plan
Class of Stock [Line Items]
Options issued and outstanding (in shares)	9,525,973	12,700,367
Shares available for future grants (in shares)	0	0
2021 Equity Incentive Plan
Class of Stock [Line Items]
Options issued and outstanding (in shares)	5,217,123	2,687,819
Shares available for future grants (in shares)	13,291,122	13,236,891
2021 Equity Incentive Plan \| Restricted stock units
Class of Stock [Line Items]
Stock unit outstanding (in shares)	11,442,464	4,788,964
2021 Equity Incentive Plan \| PSUs
Class of Stock [Line Items]
Stock unit outstanding (in shares)	525,108	787,660
2021 Employee Stock Purchase Plan
Class of Stock [Line Items]
Shares available for future grants (in shares)	5,359,971	4,091,248

Long-Term Debt (Details) - Revolving Credit Facility - USD ($)		9 Months Ended
	Apr. 17, 2023	Sep. 30, 2023	Dec. 31, 2022	Feb. 20, 2019
Credit Agreement
Debt Instrument [Line Items]
Maximum borrowing capacity				$ 40,000,000
Accordion feature, increase limit				35,000,000
Line of credit facility, total revolver commitment percentage		20.00%
Commitment fee percentage		0.20%
Fronting fee percentage		0.125%
Long-term line of credit		$ 0	$ 0
Credit Agreement \| Secured Overnight Financing Rate (SOFR)
Debt Instrument [Line Items]
Basis spread on variable rate (as percent)		0.10%
Credit Agreement \| Base, SOFR, or Commitment Fee \| Minimum
Debt Instrument [Line Items]
Basis spread on variable rate (as percent)		1.25%
Credit Agreement \| Base, SOFR, or Commitment Fee \| Maximum
Debt Instrument [Line Items]
Basis spread on variable rate (as percent)		1.50%
Second Amendment
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 50,000,000			40,000,000
Accordion feature, increase limit	$ 50,000,000			$ 35,000,000
Line of credit facility, interest rate margin	0.50%
Line of credit facility, percentage threshold of availability of aggregate revolving commitments	25.00%

Warrants

9 Months Ended

Sep. 30, 2023

Warrants and Rights Note Disclosure [Abstract]

Warrants

Common Stock Warrants

Through 2020, we issued warrants to purchase common stock to various third parties. The warrants were exercised in full in August 2022, and therefore, there were no common stock warrants outstanding as of September 30, 2023 and December 31, 2022. We recorded $0.0 million and $1.0 million of common stock warrant expense for the three and nine months ended September 30, 2022.

The following table is a summary of warrant activity for the three and nine months ended September 30, 2022:


Date of issuance			July 2018
Outstanding at June 30, 2022			5,114
Exercised during the three months ended September 30, 2022			5,114
Outstanding at September 30, 2022			—


Date of issuance			July 2018
Outstanding at December 31, 2021			30,684
Exercised during the nine months ended September 30, 2022			30,684
Outstanding at September 30, 2022			—

Leases - Schedule of Lease Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Leases [Abstract]
Operating lease costs	$ 4,666	$ 4,397	$ 13,884	$ 11,945
Variable lease costs	56	55	168	169
Short-term lease costs	3	187	73	444
Sublease income	(57)	0	(110)	0
Total lease costs	$ 4,668	$ 4,639	$ 14,015	$ 12,558
Weighted-average remaining lease term (in years)	7 years 3 months 14 days	3 years 11 months 19 days	7 years 3 months 14 days	3 years 11 months 19 days
Weighted-average discount rate	5.55%	4.32%	5.55%	4.32%

Benefit Plan (Details) - USD ($)	3 Months Ended		9 Months Ended
Benefit Plan (Details) - USD ($)	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Retirement Benefits [Abstract]
Discretionary profit-sharing contributions	$ 0	$ 0	$ 0	$ 0
Matching contributions	$ 300,000	$ 400,000	$ 1,100,000	$ 1,000,000

Net Loss Per Share - Schedule of Basic and Diluted Net Loss per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Numerator:
Net loss attributable to common stockholders, basic	$ (31,575)	$ (25,241)	$ (95,679)	$ (76,489)
Net loss attributable to common stockholders, diluted	$ (31,575)	$ (25,241)	$ (95,679)	$ (76,489)
Denominator:
Weighted-average shares used in computing net loss per share attributable to common stockholders, basic (in shares)	152,103,817	149,267,269	151,005,080	148,481,459
Weighted-average shares used in computing net loss per share attributable to common stockholders, diluted (in shares)	152,103,817	149,267,269	151,005,080	148,481,459
Net loss per share attributable to common stockholders, basic (in dollars per share)	$ (0.21)	$ (0.17)	$ (0.63)	$ (0.52)
Net loss per share attributable to common stockholders, diluted (in dollars per share)	$ (0.21)	$ (0.17)	$ (0.63)	$ (0.52)

- Definition

The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

+ References

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+ Details

- Definition

The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

+ References

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Amount, after deduction of tax, noncontrolling interests, dividends on preferred stock and participating securities, and addition from assumption of issuance of common shares for dilutive potential common shares; of income (loss) available to common shareholders.

+ References + Details

Significant Accounting Policies (Policies)	9 Months Ended
Significant Accounting Policies (Policies)	Sep. 30, 2023
Accounting Policies [Abstract]
Basis of Preparation	Basis of Preparation—The accompanying unaudited condensed consolidated financial statements have been presented in U.S. dollars and prepared in accordance with United States generally accepted accounting principles (“GAAP”) for interim financial information and applicable rules and regulations of the U.S. Securities and Exchange Commission (“SEC”) regarding interim financial information. Certain information and disclosures normally included in consolidated financial statements prepared in accordance with GAAP have been condensed or omitted. These unaudited condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements and accompanying notes contained in the Annual Report on Form 10-K for the fiscal year ended December 31, 2022, filed with the SEC on March 10, 2023 (“Form 10-K”). In our opinion, the accompanying unaudited condensed interim financial statements include all adjustments, consisting of a normal recurring nature, which are necessary for a fair presentation of the financial position, operating results and cash flows for the periods presented. The condensed consolidated balance sheet as of December 31, 2022 has been derived from the audited financial statements at that date, but does not include all of the disclosures required by GAAP. Certain monetary amounts, percentages, and other figures included elsewhere in these condensed consolidated financial statements and accompanying notes have been subject to rounding adjustments. As such, figures shown as totals in certain tables may not be the arithmetic aggregation of the figures that precede them, and figures expressed as percentages in the text may not total 100% or, as applicable, when aggregated may not be the arithmetic aggregation of the percentages that precede them. Certain prior period reclassifications have been made in the condensed consolidated statements of operations and comprehensive loss to conform to the current period presentation. Specifically, for the three and nine months ended September 30, 2022, $0.7 million of selling, general and administrative expense was reclassified to restructuring expense in the condensed consolidated statements of operations and comprehensive loss. Such reclassification had no impact to our previously reported condensed consolidated balance sheet or condensed consolidated statement of cash flows.
Principles of Consolidation	Principles of Consolidation—The condensed consolidated financial statements include the accounts of Allbirds, Inc. and our wholly owned subsidiaries. All intercompany balances and transactions have been eliminated in consolidation.
Use of Estimates	Use of Estimates—The preparation of financial statements in conformity with GAAP requires us to make estimates and assumptions that affect the reported amounts of assets and liabilities at the date of the financial statements and reported amounts of revenues and expenses during the reporting period. Actual results could differ from these estimates.
Segments	Segments—Operating segments are defined as components of an entity for which separate financial information is available and that is regularly reviewed by our chief operating decision maker (“CODM”) in deciding how to allocate resources to an individual segment and in assessing performance. Prior to May 4, 2023, our CODMs were our co-Chief Executive Officers. On May 4, 2023, Timothy Brown, transitioned from his co-Chief Executive Officer role to Chief Innovation Officer, a non-executive role, and Joseph Zwillinger, our other co-Chief Executive Officer, was appointed our Chief Executive Officer. As a result, we performed an evaluation to determine our CODM. We determined that Joseph Zwillinger, Chief Executive Officer, was our CODM after May 4, 2023 and as of September 30, 2023. We operate in one operating segment and one reportable segment, as the CODM reviews financial information presented on an aggregate basis for purposes of making operating decisions, allocating resources, and evaluating financial performance. There was no change in our operating or reportable segments as a result of the change in CODM during the second quarter of 2023.
Foreign Currency Transactions	Foreign Currency Transactions—Our reporting currency is the U.S. dollar. The functional currency for each subsidiary included in these condensed consolidated financial statements that is domiciled outside of the United States is generally the applicable local currency of that country or the U.S. dollar. The translation of foreign currencies into U.S. dollars is performed for assets and liabilities using current foreign currency exchange rates in effect at the balance sheet date and for revenues and expense accounts using average foreign currency exchange rates during the period. Capital accounts are translated at historical foreign currency exchange rates. Translation gains and losses are included in stockholders’ equity as a component of accumulated other comprehensive income or loss. Adjustments that arise from foreign currency exchange rate changes on transactions denominated in a currency other than the functional currency are included in other income or expense on the condensed consolidated statements of operations and comprehensive loss.
Cash, Cash Equivalents, and Restricted Cash	Cash, Cash Equivalents, and Restricted Cash—We consider all highly liquid investments with an original maturity date of three months or less as cash equivalents. Cash and cash equivalents are comprised primarily of domestic and foreign bank accounts and money market funds. These cash and cash equivalents are valued based on Level 1 inputs, which consist of quoted prices in active markets. We place our cash and cash equivalents with several high credit quality financial institutions which, at times, may be in excess of Federal Deposit Insurance Corporation (“FDIC”) insurance limits. We have not experienced any losses in such accounts and periodically evaluate the credit worthiness of the financial institutions. Our foreign bank accounts are not subject to FDIC insurance. Restricted cash serves as collateral for a bond with the United States Customs and Border Protection (“CBP”), which allows us to take possession of our inventory before all formalities with the CBP are completed for imported products. Restricted cash is included in prepaid expenses and other current assets on the condensed consolidated balance sheets.
Accounts Receivable	Accounts Receivable—Accounts receivable consist primarily of amounts due from customers, which results from sales to customers including credit card deposits in transit at the balance sheet date, the majority of which are settled within two to three business days, and wholesale accounts receivable, which are settled per the terms of the sale. Wholesale account receivables were $2.3 million and $6.3 million as of September 30, 2023 and December 31, 2022, respectively. Credit card receivables were $2.1 million as of September 30, 2023 and December 31, 2022.
Inventory	Inventory—Inventory consists of finished goods, stated at the lower of cost or net realizable value. We value our inventory using the weighted-average cost method and include product costs from our suppliers, freight, import duties and other landing costs.We periodically review inventory and make provisions as necessary to appropriately value end of life, slow-moving, damaged, and excess inventory. To determine if the value of inventory requires a write-down, we estimate the net realizable value of inventory by considering current and anticipated demand, customer preferences and buying trends, and the age of the merchandise. Inventory write-downs are recognized as cost of revenue in the condensed consolidated statements of operations and comprehensive loss.
Revenue Recognition	Revenue Recognition—Our primary source of revenue is from sales of footwear and apparel products. We recognize revenue when control passes to the customer. This occurs at the time products are shipped to digital and wholesale customers, and at the point of sale for retail customers, which is when our performance obligation is satisfied. For the three and nine months ended September 30, 2023, we recognized $1.0 million and $3.0 million of revenue, respectively, that was deferred as of December 31, 2022, and for the three and nine months ended September 30, 2022, we recognized $1.0 million and $3.1 million, respectively, of revenue that was deferred as of December 31, 2021. As of September 30, 2023 and December 31, 2022, we had $0.4 million in cash collections of purchases via our digital channel which had not yet shipped, and $3.5 million and $3.6 million, respectively, in gift card liabilities included in deferred revenue in the condensed consolidated balance sheets. We had deferred revenue balances of $3.9 million and $3.4 million as of September 30, 2023 and September 30, 2022, respectively. The amounts as of September 30, 2023 are expected to be recognized over the next 12 months. We record a reserve for estimated product returns, based upon historical return trends, in each reporting period as an offsetting decrease of net revenue, with an increase to our sales-refund reserve in accrued expenses. We have also recorded a related inventory returns receivable in prepaid expenses and other current assets, with an offsetting decrease to cost of revenue, as of September 30, 2023 and December 31, 2022 in the condensed consolidated balance sheets.
Fair Value Measurements	Fair Value Measurements—Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) 820, Fair Value Measurements, defines fair value, establishes a framework for measuring fair value under GAAP, and enhances disclosures about fair value measurements. It clarifies that fair value is an exit price, representing the amount that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants. As such, fair value is a market-based measurement that should be determined based on assumptions that market participants would use in pricing an asset or liability. As a basis for considering such assumptions, ASC 820 establishes a three-tier value hierarchy, which prioritizes the inputs used in measuring fair value as follows: Level 1—Observable inputs, such as quoted prices in active markets Level 2—Inputs other than the quoted prices in active markets that are observable either directly or indirectly Level 3—Unobservable inputs in which there is little or no market data, which requires us to develop our own assumptions. This hierarchy requires us to use observable market data, when available, and to minimize the use of unobservable inputs when determining fair value. We record cash and cash equivalents, accounts receivable, accounts payable, and accrued expenses at cost. The carrying values of these instruments approximate their fair value due to their short‐term maturities. We hold certain assets that are required to be measured at fair value on both a recurring and non-recurring basis, which are outlined in Note 9, Fair Value Measurements.
Impairment of Long-Lived Assets	Impairment of Long-Lived Assets—We evaluate the recoverability of property and equipment, operating lease right-of-use assets, and other long-lived assets, including identifiable intangible assets with definite lives, whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. Long-lived assets are reviewed for recoverability at the lowest level in which there are identifiable cash flows (asset group). The asset group is typically at the country-level for store assets and the corporate-level for corporate assets. The carrying amount of a country asset group includes stores’ operating lease right-of-use assets and property and equipment, primarily leasehold improvements. Recoverability of assets held and used is measured by comparing the carrying amount of an asset or an asset group to the estimated undiscounted future net cash flows expected to be generated by the asset or asset group. If the carrying amount of an asset or asset group exceeds these estimated future cash flows, an impairment charge is recognized as the amount by which the carrying amount of the assets exceeds the fair value of the asset or asset group, based on estimated discounted net future cash flows. Assumptions used in these forecasts are consistent with internal planning, and include revenue growth rates, gross margins, and operating expense in relation to the current economic environment and our future expectations, competitive factors in our various markets, inflation, revenue trends and other relevant economic factors that may impact the asset group under evaluation. There is uncertainty in the projected undiscounted future cash flows used in our impairment review analysis, which requires the use of estimates and assumptions. If our actual performance does not achieve our projections, or if the assumptions used change in the future, we may be required to recognize impairment charges in future periods, and any such charges could be material. We determined that a non-cash impairment charge was not necessary in the quarter ended September 30, 2023, based on our future cash flow estimates versus the net carrying value of our long-lived assets.
Restructuring Charges	Restructuring Charges—In the first quarter of 2023, we announced a strategic transformation plan designed to improve our revenue trend, as well as improve capital efficiency and drive profitability in the business. As part of this effort, we have incurred professional fees, severance and other employee-related benefits, and other related charges which are included within restructuring expense in the condensed consolidated statements of operations and comprehensive loss.
Recently Adopted Accounting Pronouncements and Recently Issued Accounting Pronouncements	Recently Adopted Accounting Pronouncements In June 2016, the FASB issued ASU 2016-13, Credit Losses (Topic 326) - Measurement of Credit Losses on Financial Instruments (“ASU 2016-13”). ASU 2016-13 requires entities to use a forward-looking approach based on current expected credit losses to estimate credit losses on certain types of financial instruments, including trade and account receivables, which may result in the earlier recognition of allowance for losses. The adoption of the guidance in the first quarter of 2023 did not have a material impact on our condensed consolidated financial statements and related disclosures as of and for the nine months ended September 30, 2023. In March 2020, the FASB issued ASU 2020-04, Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting. This guidance provides temporary optional expedients and exceptions to accounting guidance on contract modifications and hedge accounting to ease entities’ financial reporting burdens as the market transitions from the London Interbank Offered Rate (LIBOR) and other interbank offered rates to alternative reference rates. The adoption of the guidance in the first quarter of 2023 did not have a material impact on our condensed consolidated financial statements and related disclosures as of and for the nine months ended September 30, 2023. Recently Issued Accounting Pronouncements In August 2020, the FASB issued ASU No. 2020-06, Accounting for Convertible Instruments and Contracts in an Entity's Own Equity, which simplifies the accounting for certain convertible instruments, amends the guidance on derivative scope exceptions for contracts in an entity's own equity, and modifies the guidance on diluted earnings per share calculations as a result of these changes. The guidance is effective for our fiscal years beginning after December 15, 2023, including interim periods within those fiscal years. The adoption of the guidance is not expected to have a material impact on our condensed consolidated financial statements and related disclosures.

Significant Accounting Policies - Schedule of Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Disaggregation of Revenue [Line Items]
Total net revenue	$ 57,244	$ 72,651	$ 182,075	$ 213,588
United States
Disaggregation of Revenue [Line Items]
Total net revenue	43,671	56,083	135,555	164,229
International
Disaggregation of Revenue [Line Items]
Total net revenue	$ 13,573	$ 16,568	$ 46,520	$ 49,359

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References + Details

- Definition

Amount, including tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value-added and excise.

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-Section S99
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+ Details

Significant Accounting Policies (Tables)

9 Months Ended

Sep. 30, 2023

Accounting Policies [Abstract]

Schedule of Disaggregation of Revenue


	Three Months Ended September 30,				Nine Months Ended September 30,
(in thousands)	2023		2022		2023		2022
United States	$	43,671	$	56,083	$	135,555	$	164,229
International	13,573		16,568		46,520		49,359
Total net revenue	$	57,244	$	72,651	$	182,075	$	213,588

Schedule of Restructuring and Related Costs

The following table presents a roll-forward of our restructuring charges, which are included within accrued expenses and other current liabilities in the condensed consolidated balance sheets:


(in thousands)	Professional fees and other related charges		Severance and other employee-related benefits
Balance as of June 30, 2023	$	89	$	353
Charges	1,230		4
Cash Payments	(382)		(357)
Balance as of September 30, 2023	$	937	$	—


(in thousands)	Professional fees and other related charges		Severance and other employee-related benefits
Balance as of December 31, 2022	$	—	$	—
Charges	5,158		357
Cash Payments	(4,221)		(357)
Balance as of September 30, 2023	$	937	$	—

Other Assets - Narrative (Details) - USD ($)	1 Months Ended		3 Months Ended		9 Months Ended
Other Assets - Narrative (Details) - USD ($)	Apr. 30, 2023	Jan. 31, 2020	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022	Nov. 22, 2021	Nov. 20, 2020
Other Assets [Line Items]
Investment in equity securities			$ 2,000,000		$ 2,000,000		$ 2,250,000
Transaction costs		$ 100,000
Intangible asset, useful life (in years)		3 years
Amortization of intangible assets			0	$ 100,000	0	$ 300,000
Intellectual Property
Other Assets [Line Items]
Intangible assets acquired		$ 1,300,000
Natural Fiber Welding, Inc.
Other Assets [Line Items]
Investment in equity securities									$ 2,000,000
Equity securities impairment loss			$ 0		0
Natural Fiber Welding, Inc. \| Series A Preferred Stock
Other Assets [Line Items]
Equity securities acquired (in shares)									201,207
NoHo ESG, Inc.
Other Assets [Line Items]
Investment in equity securities								$ 300,000
Equity securities impairment loss					$ 100,000
Assets acquired	$ 200,000

Warrants (Tables)

9 Months Ended

Sep. 30, 2023

Warrants and Rights Note Disclosure [Abstract]

Schedule of Warrants and Rights Outstanding, Activity

The following table is a summary of warrant activity for the three and nine months ended September 30, 2022:


Date of issuance			July 2018
Outstanding at June 30, 2022			5,114
Exercised during the three months ended September 30, 2022			5,114
Outstanding at September 30, 2022			—


Date of issuance			July 2018
Outstanding at December 31, 2021			30,684
Exercised during the nine months ended September 30, 2022			30,684
Outstanding at September 30, 2022			—

Warrants - Narrative (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Warrants - Narrative (Details) - USD ($) $ in Millions	Sep. 30, 2022	Sep. 30, 2022	Sep. 30, 2023	Dec. 31, 2022	Jun. 30, 2022	Dec. 31, 2021
Class of Warrant or Right [Line Items]
Class of warrant or right, outstanding (in shares)	0	0			5,114	30,684
Common stock warrants
Class of Warrant or Right [Line Items]
Class of warrant or right, outstanding (in shares)			0	0
Warrant expense	$ 0.0	$ 1.0

Accrued Expenses and Other Current Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Payables and Accruals [Abstract]
Sales-refund reserve	$ 2,485	$ 4,534
Taxes payable	2,260	3,336
Employee-related liabilities	6,196	2,624
Accrued expenses	9,207	12,954
Total accrued expenses and other current liabilities	$ 20,148	$ 23,448

Leases - Schedule of Minimum Lease Payments Under Noncancelable Operating Leases (Details) $ in Thousands	Sep. 30, 2023 USD ($)
Operating Lease Payments
2023	$ 5,069
2024	19,755
2025	19,558
2026	18,088
2027 and after	69,983
Total undiscounted operating lease payments	132,453
Less: imputed discount	25,450
Total operating lease liabilities	$ 107,002

Significant Accounting Policies - Revenue Recognition (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Accounting Policies [Abstract]
Revenue recognized	$ 1.0	$ 1.0	$ 3.0	$ 3.1
Cash collections of purchases via digital channel not yet shipped	0.4		0.4		$ 0.4
Gift card liabilities	3.5		3.5		$ 3.6
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-10-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligation, amount		$ 3.4		$ 3.4
Remaining performance obligation, expected timing of satisfaction, period (in months)		12 months		12 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-10-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligation, amount	$ 3.9		$ 3.9
Remaining performance obligation, expected timing of satisfaction, period (in months)	12 months		12 months

Net Loss Per Share

9 Months Ended

Sep. 30, 2023

Earnings Per Share [Abstract]

Net Loss Per Share

Net Loss Per ShareWe compute net loss per share using the two-class method required for participating securities and multiple classes of common stock. The two-class method requires net income or loss be allocated between common stock and participating securities based upon their respective rights to receive dividends as if all income or loss for the period had been distributed. The rights, including the liquidation and dividend rights and sharing of losses of the Class A common stock and Class B common stock are identical, other than voting, transfer, and conversion rights. As the liquidation and dividend rights and sharing of losses are identical, the undistributed earnings are allocated on a

proportionate basis and the resulting net loss per share attributed to common stockholders will, therefore, be the same for both Class A and Class B common stock on an individual or combined basis.

The following table sets forth the computation of basic and diluted net loss per share attributable to common stockholders for the three and nine months ended September 30, 2023 and 2022:


	Three Months Ended September 30,				Nine Months Ended September 30,
(in thousands, except share and per share data)	2023		2022		2023		2022
Numerator:
Net loss attributable to common stockholders	$	(31,575)	$	(25,241)	$	(95,679)	$	(76,489)
Denominator:
Weighted-average shares used in computing net loss per share attributable to common stockholders, basic and diluted	152,103,817		149,267,269		151,005,080		148,481,459
Net loss per share attributable to common stockholders, basic and diluted	$	(0.21)	$	(0.17)	$	(0.63)	$	(0.52)


	September 30, 2023	September 30, 2022
Outstanding stock options	14,743,096	15,590,268
Common stock warrants	—	0
2021 ESPP	43,692	53,803
RSUs	11,442,464	5,081,676
PSUs	525,108	787,660
Total anti-dilutive securities	26,754,360	21,513,407

Significant Accounting Policies - Schedule of Restructuring and Related Costs (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Restructuring Reserve [Roll Forward]
Charges	$ 1,234	$ 747	$ 5,514	$ 747
Professional fees and other related charges
Restructuring Reserve [Roll Forward]
Restructuring, beginning balance	89,000		0
Charges	1,230,000		5,158,000
Cash Payments	(382,000)		(4,221,000)
Restructuring, ending balance	937,000		937,000
Severance and other employee-related benefits
Restructuring Reserve [Roll Forward]
Restructuring, beginning balance	353,000		0
Charges	4,000		357,000
Cash Payments	(357,000)		(357,000)
Restructuring, ending balance	$ 0		$ 0

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Income Statement [Abstract]
Net revenue	$ 57,244	$ 72,651	$ 182,075	$ 213,588
Cost of revenue	32,351	40,120	105,218	120,263
Gross profit	24,893	32,531	76,857	93,325
Operating expense:
Selling, general, and administrative expense	43,545	44,644	132,516	125,106
Marketing expense	10,176	12,654	34,192	42,294
Restructuring expense	1,234	747	5,514	747
Total operating expense	54,955	58,045	172,222	168,147
Loss from operations	(30,062)	(25,514)	(95,365)	(74,822)
Loss from sales of businesses	(2,346)	0	(2,346)	0
Interest income (expense)	1,120	(35)	2,961	(107)
Other (expense) income	(153)	155	(298)	393
Loss before provision for income taxes	(31,441)	(25,394)	(95,048)	(74,536)
Income tax (provision) benefit	(134)	153	(631)	(1,953)
Net loss	$ (31,575)	$ (25,241)	$ (95,679)	$ (76,489)
Net loss per share data:
Net loss per share attributable to common stockholders, basic (in dollars per share)	$ (0.21)	$ (0.17)	$ (0.63)	$ (0.52)
Net loss per share attributable to common stockholders, diluted (in dollars per share)	$ (0.21)	$ (0.17)	$ (0.63)	$ (0.52)
Weighted-average shares used in computing net loss per share attributable to common stockholders, basic (in shares)	152,103,817	149,267,269	151,005,080	148,481,459
Weighted-average shares used in computing net loss per share attributable to common stockholders, diluted (in shares)	152,103,817	149,267,269	151,005,080	148,481,459
Other comprehensive loss:
Foreign currency translation loss	$ (906)	$ (3,690)	$ (1,438)	$ (7,763)
Total comprehensive loss	$ (32,481)	$ (28,931)	$ (97,117)	$ (84,252)

Significant Accounting Policies - Segments (Details)	9 Months Ended
Significant Accounting Policies - Segments (Details)	Sep. 30, 2023 segment
Accounting Policies [Abstract]
Number of operating segments	1
Number of reportable segments	1

Accrued Expenses and Other Current Liabilities

9 Months Ended

Sep. 30, 2023

Payables and Accruals [Abstract]

Accrued Expenses and Other Current Liabilities

Accrued expenses consisted of the following as of September 30, 2023 and December 31, 2022:


(in thousands)	September 30, 2023		December 31, 2022
Sales-refund reserve	$	2,485	$	4,534
Taxes payable	2,260		3,336
Employee-related liabilities	6,196		2,624
Accrued expenses	9,207		12,954
Total accrued expenses and other current liabilities	$	20,148	$	23,448

Stockholders’ Equity (Tables)

9 Months Ended

Sep. 30, 2023

Equity [Abstract]

Schedule of Common Stock Reserved for Future Issuance

Shares of common stock reserved for future issuance as of September 30, 2023 and December 31, 2022 consist of the following:


	September 30, 2023	December 31, 2022
2015 Equity Incentive Plan:
Options issued and outstanding	9,525,973	12,700,367
Shares available for future option grants	—	—
2021 Equity Incentive Plan:
Options issued and outstanding	5,217,123	2,687,819
Restricted stock units outstanding	11,442,464	4,788,964
Performance stock units outstanding	525,108	787,660
Shares available for future grants	13,291,122	13,236,891
2021 Employee Stock Purchase Plan:
Shares available for future grants	5,359,971	4,091,248
Total shares of common stock reserved for future issuance	45,361,761	38,292,949

Stock-Based Compensation - Schedule of Share-based Payment Arrangement, Option, Activity (Details) - USD ($) $ / shares in Units, $ in Thousands		9 Months Ended	12 Months Ended
	Nov. 19, 2018	Sep. 30, 2023	Dec. 31, 2022
Number of Options
Outstanding, beginning balance (in shares)		15,388,186
Granted (in shares)		2,638,982
Exercised (in shares)	(220,000)	(719,579)
Forfeited (in shares)		(1,080,938)
Cancelled (in shares)		(1,483,555)
Outstanding, ending balance (in shares)		14,743,096	15,388,186
Vested and exercisable at end of period (in shares)		9,122,606
Weighted-Average Exercise Price
Outstanding, beginning balance (in dollars per share)		$ 3.71
Granted (in dollars per share)		1.39
Exercised (in dollars per share)		1.75
Forfeited (in dollars per share)		3.83
Cancelled (in dollars per share)		4.30
Outstanding, ending balance (in dollars per share)		3.38	$ 3.71
Vested and exercisable at end of period (in dollars per share)		$ 3.61
Weighted-Average Remaining Contractual Term (in years)
Outstanding		6 years 4 months 9 days	6 years 5 months 4 days
Vested and exercisable at end of period (in years)		4 years 9 months 25 days
Aggregate Intrinsic Value (in thousands)
Outstanding, beginning of period		$ 6,101
Granted
Exercised		948
Forfeited
Cancelled
Outstanding, end of period		1,878	$ 6,101
Vested and exercisable at end of period		$ 1,878

Stock-Based Compensation - Schedule of Stock-based Compensation Expense, Restricted Stock Unit, Activity (Details) - RSUs - $ / shares	Sep. 30, 2023	Dec. 31, 2022
Number of Shares
Number of Shares (in shares)	11,442,464	4,788,964
Grant Date Fair Value per Share
Grant Date Fair Value per Share (in dollars per share)	$ 2.23	$ 4.86
Tranche 1
Number of Shares
Number of Shares (in shares)	262,553
Grant Date Fair Value per Share
Grant Date Fair Value per Share (in dollars per share)	$ 4.77
Tranche 2
Number of Shares
Number of Shares (in shares)	262,553
Grant Date Fair Value per Share
Grant Date Fair Value per Share (in dollars per share)	$ 5.16
Tranche 3
Number of Shares
Number of Shares (in shares)	262,554
Grant Date Fair Value per Share
Grant Date Fair Value per Share (in dollars per share)	$ 5.41

Other Assets - Schedule of Other Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Investment in equity securities	$ 2,000	$ 2,250
Security deposits	3,501	4,417
Intangible assets	94	133
Debt issuance costs	20	57
Deferred tax assets	1,001	1,001
Total other assets	$ 6,616	$ 7,858