Sonos (SONO) 10-K 22 Nov 21 2021 FY Annual report Financial data

Cover

Cover - USD ($) $ in Millions	12 Months Ended
	Oct. 02, 2021	Nov. 08, 2021	Apr. 01, 2021
Cover [Abstract]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Oct. 2, 2021
Current Fiscal Year End Date	--10-02
Document Transition Report	false
Entity File Number	001-38603
Entity Registrant Name	SONOS, INC.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	03-0479476
Entity Address, Address Line One	614 Chapala Street
Entity Address, City or Town	Santa Barbara
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	93101
City Area Code	805
Local Phone Number	965-3001
Title of 12(b) Security	Common Stock, $0.001 par value
Trading Symbol	SONO
Security Exchange Name	NASDAQ
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Small Reporting Company	false
Emerging Growth Company	false
ICFR Auditor Attestation Flag	true
Entity Shell Company	false
Entity Public Float			$ 3,937.2
Entity Common Stock, Shares Outstanding		127,128,556
Documents Incorporated by Reference	Part III incorporates by reference certain information from the registrant’s definitive proxy statement (the "2022 Proxy Statement") relating to its 2022 Annual Meeting of Stockholders. The 2022 Proxy Statement will be filed with the United States Securities and Exchange Commission within 120 days after the end of the fiscal year to which this report relates.
Entity Central Index Key	0001314727
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	FY
Amendment Flag	false

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($)	Oct. 02, 2021	Oct. 03, 2020
Current assets:
Cash and cash equivalents	$ 640,101,000	$ 407,100,000
Restricted cash	0	191,000
Accounts receivable, net of allowances of $20,707 and $18,822 as of October 2, 2021, and October 3, 2020	100,779,000	54,935,000
Inventories	185,130,000	180,830,000
Prepaid and other current assets	31,504,000	17,321,000
Total current assets	957,514,000	660,377,000
Property and equipment, net	71,341,000	60,784,000
Operating lease right-of-use assets	33,841,000	42,342,000
Goodwill	15,545,000	15,545,000
Intangible assets, net	24,450,000	26,394,000
Deferred tax assets	10,028,000	1,800,000
Other noncurrent assets	26,085,000	8,809,000
Total assets	1,138,804,000	816,051,000
Current liabilities:
Accounts payable	214,996,000	250,328,000
Accrued expenses	108,029,000	45,049,000
Accrued compensation	77,695,000	44,517,000
Short-term debt	0	6,667,000
Deferred revenue, current	35,866,000	15,304,000
Other current liabilities	39,544,000	31,150,000
Total current liabilities	476,130,000	393,015,000
Operating lease liabilities, noncurrent	33,960,000	50,360,000
Long-term debt	0	18,251,000
Deferred revenue, noncurrent	53,632,000	47,085,000
Deferred tax liabilities	2,394,000	2,434,000
Other noncurrent liabilities	3,646,000	7,067,000
Total liabilities	569,762,000	518,212,000
Commitments and contingencies (Note 12)
Stockholders’ equity:
Common stock, $0.001 par value; 500,000,000 and 500,000,000 shares authorized, 128,857,085 and 113,915,233 shares issued, 126,985,273 and 112,344,095 shares outstanding as of October 2, 2021, and October 3, 2020, respectively	129,000	114,000
Treasury stock, 1,871,812 and 1,571,138 shares at cost as of October 2, 2021, and October 3, 2020, respectively	(50,276,000)	(20,886,000)
Additional paid-in capital	690,462,000	548,993,000
Accumulated deficit	(69,897,000)	(228,492,000)
Accumulated other comprehensive loss	(1,376,000)	(1,890,000)
Total stockholders' equity	569,042,000	297,839,000
Total liabilities and stockholders’ equity	$ 1,138,804,000	$ 816,051,000

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Oct. 02, 2021	Oct. 03, 2020
Statement of Financial Position [Abstract]
Allowance for doubtful accounts	$ 20,707	$ 18,822
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, authorized (in shares)	500,000,000	500,000,000
Common stock, shares issued (in shares)	128,857,085	113,915,233
Common stock, shares outstanding (in shares)	126,985,273	112,344,095
Treasury stock, shares at cost (in shares)	1,871,812	1,571,138

Consolidated Statements of Oper

Consolidated Statements of Operations and Comprehensive Income (Loss) - USD ($) $ in Thousands	12 Months Ended
	Oct. 02, 2021	Oct. 03, 2020	Sep. 28, 2019
Income Statement [Abstract]
Revenue	$ 1,716,744	$ 1,326,328	$ 1,260,823
Cost of revenue	906,750	754,372	733,480
Gross profit	809,994	571,956	527,343
Operating expenses
Research and development	230,078	214,672	171,174
Sales and marketing	272,124	263,539	247,599
General and administrative	152,828	120,978	102,871
Total operating expenses	655,030	599,189	521,644
Operating income (loss)	154,964	(27,233)	5,699
Other income (expense), net
Interest income	146	1,998	4,349
Interest expense	(592)	(1,487)	(2,499)
Other income (expense), net	2,407	6,639	(8,625)
Total other income (expense), net	1,961	7,150	(6,775)
Income (loss) before provision for (benefit from) income taxes	156,925	(20,083)	(1,076)
Provision for (benefit from) income taxes	(1,670)	32	3,690
Net income (loss)	158,595	(20,115)	(4,766)
Net income (loss) attributable to common stockholders - basic	158,595	(20,115)	(4,766)
Net income (loss) attributable to common stockholders - diluted	$ 158,595	$ (20,115)	$ (4,766)
Net income (loss) per share attributable to common stockholders:
Net income (loss) per share attributable to common stockholders, basic (in dollars per share)	$ 1.30	$ (0.18)	$ (0.05)
Net income (loss) per share attributable to common stockholders, diluted (in dollars per share)	$ 1.13	$ (0.18)	$ (0.05)
Weighted-average shares used in computing net income (loss) per share attributable to common stockholders:
Weighted-average shares used in computing net income (loss) per share attributable to common stockholders, basic (in shares)	122,245,212	109,807,154	103,783,006
Weighted-average shares used in computing net income (loss) per share attributable to common stockholders, diluted (in shares)	140,309,152	109,807,154	103,783,006
Total comprehensive income (loss)
Net income (loss)	$ 158,595	$ (20,115)	$ (4,766)
Change in foreign currency translation adjustment	514	(1,826)	1,613
Comprehensive income (loss)	$ 159,109	$ (21,941)	$ (3,153)

Consolidated Statements of Stoc

Consolidated Statements of Stockholders’ Equity - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-In Capital	Treasury Stock	Accumulated Deficit	Accumulated Other Comprehensive Loss
Balances, beginning of period (in shares) at Sep. 29, 2018		100,868,250		(807,040)
Balances, beginning of period at Sep. 29, 2018	$ 208,358	$ 101	$ 424,617	$ (11,072)	$ (203,611)	$ (1,677)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock pursuant to equity incentive plans (in shares)		8,755,167
Issuance of common stock pursuant to equity incentive plans	31,574	$ 9	31,565
Repurchase of common stock (in shares)				(213,735)
Repurchase of common stock	(2,426)			$ (2,426)
Stock-based compensation expense	46,575		46,575
Net income (loss)	(4,766)				(4,766)
Change in foreign currency translation adjustment	1,613					1,613
Balances, ending of period (in shares) at Sep. 28, 2019		109,623,417		(1,020,775)
Balances, ending of period at Sep. 28, 2019	280,928	$ 110	502,757	$ (13,498)	(208,377)	(64)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock pursuant to equity incentive plans (in shares)		8,392,371
Issuance of common stock pursuant to equity incentive plans	42,286	$ 8	42,278
Retirement of treasury stock (in shares)		(4,100,555)		4,100,555
Retirement of treasury stock	0	$ (4)	(53,652)	$ 53,656
Repurchase of common stock (in shares)				(3,787,783)
Repurchase of common stock	(50,015)			$ (50,015)
Repurchase of common stock related to shares withheld for tax in connection with vesting of restricted stock unit awards ("RSUs") (in shares)				(863,135)
Repurchase of common stock related to shares withheld for tax in connection with vesting of restricted stock unit awards ("RSUs")	(11,029)			$ (11,029)
Stock-based compensation expense	57,610		57,610
Net income (loss)	(20,115)				(20,115)
Change in foreign currency translation adjustment	$ (1,826)					(1,826)
Balances, ending of period (in shares) at Oct. 03, 2020	112,344,095	113,915,233		(1,571,138)
Balances, ending of period at Oct. 03, 2020	$ 297,839	$ 114	548,993	$ (20,886)	(228,492)	(1,890)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock pursuant to equity incentive plans (in shares)		17,544,060
Issuance of common stock pursuant to equity incentive plans	$ 147,818	$ 18	147,800
Retirement of treasury stock (in shares)	(2,602,208)	(2,602,208)		2,602,208
Retirement of treasury stock	$ 0	$ (3)	(68,458)	$ 68,461
Repurchase of common stock (in shares)	(1,394,006)			(1,394,006)
Repurchase of common stock	$ (50,014)			$ (50,014)
Repurchase of common stock related to shares withheld for tax in connection with vesting of restricted stock unit awards ("RSUs") (in shares)				(1,508,876)
Repurchase of common stock related to shares withheld for tax in connection with vesting of restricted stock unit awards ("RSUs")	(47,837)			$ (47,837)
Stock-based compensation expense	62,127		62,127
Net income (loss)	158,595				158,595
Change in foreign currency translation adjustment	$ 514					514
Balances, ending of period (in shares) at Oct. 02, 2021	126,985,273	128,857,085		(1,871,812)
Balances, ending of period at Oct. 02, 2021	$ 569,042	$ 129	$ 690,462	$ (50,276)	$ (69,897)	$ (1,376)

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Oct. 02, 2021	Oct. 03, 2020	Sep. 28, 2019
Cash flows from operating activities
Net income (loss)	$ 158,595	$ (20,115)	$ (4,766)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	33,882	36,426	36,415
Impairment and abandonment charges	3,552	14,174	0
Stock-based compensation expense	62,127	57,610	46,575
Other	1,951	5,710	2,713
Deferred income taxes	(8,330)	(567)	(268)
Foreign currency transaction (gain) loss	(1,108)	(4,143)	4,035
Changes in operating assets and liabilities:
Accounts receivable, net	(45,697)	49,593	(32,078)
Inventories	(7,911)	38,010	(31,796)
Other assets	(30,009)	(5,749)	(7,605)
Accounts payable and accrued expenses	26,231	(24,440)	85,878
Accrued compensation	33,447	1,088	8,231
Deferred revenue	27,587	4,754	6,165
Other liabilities	(1,091)	9,635	7,137
Net cash provided by operating activities	253,226	161,986	120,636
Cash flows from investing activities
Purchases of property and equipment, intangible and other assets	(45,531)	(33,035)	(23,222)
Cash paid for acquisition, net of acquired cash	0	(36,289)	0
Net cash used in investing activities	(45,531)	(69,324)	(23,222)
Cash flows from financing activities
Payments of offering costs	0	0	(585)
Proceeds from exercise of stock options	147,818	42,286	31,574
Payments for repurchase of common stock	(50,014)	(50,015)	(2,426)
Payments for repurchase of common stock related to shares withheld for tax in connection with vesting of RSUs	(47,837)	(11,029)	0
Repayments of borrowings	(25,000)	(8,333)	(6,667)
Net cash provided by (used in) financing activities	24,967	(27,091)	21,896
Effect of exchange rate changes on cash, cash equivalents and restricted cash	148	2,900	(1,610)
Net increase in cash, cash equivalents, and restricted cash	232,810	68,471	117,700
Cash, cash equivalents, and restricted cash
Beginning of period	407,291	338,820	221,120
End of period	640,101	407,291	338,820
Supplemental disclosure
Cash paid for interest	502	1,647	2,517
Cash paid for taxes, net of refunds	4,114	783	3,570
Cash paid for amounts included in the measurement of lease liabilities	18,657	17,194	0
Supplemental disclosure of non-cash investing and financing activities
Purchases of property and equipment, accrued but not paid	5,653	3,911	11,687
Right-of-use assets obtained in exchange for lease liabilities	$ 2,010	$ 77,416	$ 0

Business Overview

Business Overview	12 Months Ended
	Oct. 02, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Business Overview	Business Overview Description of Business Sonos, Inc. and its wholly owned subsidiaries (collectively, “Sonos,” the “Company,” “we,” “us” or “our”) designs, develops, manufactures and sells audio products and services. The Sonos sound system provides customers with an immersive listening experience created by the design of its speakers and components, a proprietary software platform, and the ability to stream content from a variety of sources over the customer’s wireless network or over Bluetooth. The Company’s products are sold through third-party physical retailers, including custom installers of home audio systems, select e-commerce retailers, and its website sonos.com. The Company’s products are distributed in over 50 countries through its wholly owned subsidiaries: Sonos Europe B.V. in the Netherlands, Beijing Sonos Technology Co. Ltd. in China, Sonos Japan GK in Japan, and Sonos Australia Pty Ltd. in Australia.

Summary of Significant Accounti

Summary of Significant Accounting Policies	12 Months Ended
	Oct. 02, 2021
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Summary of Significant Accounting Policies Basis of Presentation and Preparation The consolidated financial statements, which include the accounts of Sonos, Inc. and its wholly owned subsidiaries, have been prepared in conformity with accounting principles generally accepted in the United States ("U.S. GAAP"). All intercompany accounts and transactions have been eliminated in consolidation. Certain prior period amounts have been reclassified to conform to the current period presentation. The Company operates on a 52-week or 53-week fiscal year ending on the Saturday nearest September 30 each year. The Company’s fiscal year is divided into four quarters of 13 weeks, each beginning on a Sunday and containing two 4-week periods followed by a 5-week period. An additional week is included in the fourth fiscal quarter approximately every five years to realign fiscal quarters with calendar quarters. This last occurred in the Company’s fiscal year ended October 3, 2020, and will reoccur in the fiscal year ending October 3, 2026. As used in the Annual Report on Form 10-K, “fiscal 2021” refers to the 52-week fiscal year ending October 2, 2021, “fiscal 2020” refers to the 53-week fiscal year ended October 3, 2020, and “fiscal 2019” refers to the 52-week fiscal year ended September 28, 2019. Use of Estimates and Judgments The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and judgments that affect the amounts reported and disclosed in the consolidated financial statements and accompanying notes. Actual results could differ materially from those estimates. For revenue recognition, examples of estimates and judgments include: determining the nature and timing of satisfaction of performance obligations, determining the standalone selling price ("SSP") of performance obligations and estimating variable consideration such as sales incentives and product returns. Additionally, estimates and judgments are made by management for allowances for credit losses, excess and obsolete inventory, useful lives associated with property and equipment, incremental borrowing rates associated with leases, the recording of and release of valuation allowances with respect to deferred tax assets and uncertain tax positions, impairment of long-lived assets, impairment of goodwill and indefinite-lived intangible assets, warranty, contingencies and valuation and assumptions underlying stock-based compensation and other equity instruments. On an ongoing basis, the Company evaluates its estimates and judgments compared to historical experience and trends that form the basis for making estimates and judgments about the carrying value of assets and liabilities. In March 2020, the outbreak of the novel coronavirus (COVID-19) was declared a pandemic. While the nature of the situation is dynamic, the Company has considered the impact when developing its estimates and assumptions noted above. Actual results and outcomes may differ from management's estimates and assumptions. Comprehensive Income (Loss) Comprehensive income (loss) consists of two components: net income (loss) and other comprehensive income (loss). Other comprehensive income (loss) refers to net gains and losses that are recorded as an element of stockholders’ equity but are excluded from net income (loss). The Company’s other comprehensive income (loss) consists of net unrealized gains and losses on foreign currency translation adjustments from those subsidiaries not using the U.S. dollar as their functional currency. Cash and Cash Equivalents Cash equivalents consist of short-term, highly liquid financial instruments with insignificant interest rate risk that are readily convertible to cash and have maturities of three months or less from the date of purchase. As of October 2, 2021, and October 3, 2020, cash equivalents consisted of money market funds, which are recorded at fair value. Restricted Cash The Company held no restricted cash as of October 2, 2021, and $0.2 million as of October 3, 2020, representing security deposits on real estate leases. Accounts Receivable Accounts receivable are recorded at the invoiced amount less allowances for credit losses and sales incentives, do not require collateral and do not bear interest. The allowance for credit losses is established through a provision for net bad debt expense which is recorded in general and administrative expense in the consolidated statements of operations and comprehensive income (loss). The Company determines the adequacy of the allowance for credit losses by evaluating the collectability of accounts, including consideration of the age of invoices, each customer’s expected ability to pay and collection history, customer-specific information, and current economic conditions that may impact the customer's ability to pay. This estimate is periodically adjusted as a result of the aforementioned process, or when the Company becomes aware of a specific customer’s inability to meet its financial obligations. Concentration of Credit Risk Financial instruments that potentially subject the Company to significant concentrations of credit risk consist principally of cash and cash equivalents and accounts receivable. The Company maintains cash and cash equivalents in several high-quality financial institutions. Cash and cash equivalents held at these banks, including those held in foreign branches of global banks, may exceed the amount of insurance provided on such deposits. These deposits may be redeemed upon demand, and management believes that the financial institutions that hold the Company’s cash and cash equivalents are financially sound and, accordingly, minimal credit risk exists with respect to cash. The Company has not experienced any losses in such accounts. As of October 2, 2021, and October 3, 2020, the Company’s customers that accounted for 10% or more of total accounts receivable, net, were as follows: Accounts Receivable, net October 2, October 3, Customer A 19 % 39 % Customer B 10 % * * Accounts receivable was less than 10%. The Company’s customers that accounted for 10% or more of total revenue were as follows: Revenue Year Ended October 2, October 3, September 28, Customer A 14 % 12 % 16 % Customer C * * 10 % * Revenue was less than 10%. Inventories Inventories primarily consist of finished goods and, to a lesser extent, component parts, which are purchased from contract manufacturers and component suppliers. Inventories are stated at lower of cost and net realizable value on a first-in, first-out basis. Inventory costs primarily consist of materials, inbound freight, import duties, tariffs, direct labor and manufacturing overhead, logistics, and other handling fees. The Company assesses the valuation of inventory balances including an assessment to determine potential excess and/or obsolete inventory. The Company may be required to write down the value of inventory if estimates of future demand and market conditions indicate excess and/or obsolete inventory. For the periods presented, the Company has not experienced significant write-downs. Ownership of inventory transfers to the Company at the time the goods are shipped from the suppliers. Inventories recorded on the Company's consolidated balance sheets include in transit inventory owned by the Company that have been shipped but have not yet been received at a Company distribution center. Property and Equipment, Net Property and equipment are stated at historical cost less accumulated depreciation. Depreciation is calculated using the straight-line method over the estimated useful lives of the related assets as follows: Computer hardware and software 1-3 years Furniture and fixtures 2-5 years Tooling and production line test equipment 2-4 years Leasehold improvements 2-10 years Product displays 1-3 years Costs incurred to improve leased office space are capitalized. Leasehold improvements are amortized on a straight-line basis over the shorter of the term of the lease or the estimated useful life of the improvement. Expenditures for major renewals and improvements that extend the useful lives of property and equipment are capitalized. Maintenance, repair costs and gains or losses associated with disposals are charged to expense as incurred. Product displays are deployed at retail locations. Because the product displays facilitate marketing of the Company’s products within the retail stores, depreciation for product displays is recorded in sales and marketing expenses in the consolidated statements of operations and comprehensive income (loss). Cloud Computing Arrangements The Company incurs costs to implement cloud computing arrangements that are hosted by a third-party vendor. Beginning in fiscal 2020, and continuing through fiscal 2021, the Company began activities to replace its legacy enterprise resource management system in order to accommodate the Company's expanding operations. Implementation costs incurred during the application development stage are capitalized until the software is ready for its intended use. The costs are then amortized on a straight-line basis over the term of the associated hosting arrangement and are recognized as an operating expense within the consolidated statements of operations and comprehensive income (loss). Capitalized costs were $14.3 million and $4.8 million as of October 2, 2021 and October 3, 2020, respectively, and are reported as a component of other assets on the Company's consolidated balance sheets. Impairment of Goodwill and Indefinite-lived Intangible Assets Goodwill and indefinite-lived intangible assets are not amortized and are tested for impairment on an annual basis or between annual tests if an event occurs or circumstances change that would more likely than not reduce the fair value of the reporting unit or asset below its carrying value. In connection with the Company's evaluation of goodwill impairment, the Company performs a qualitative assessment to determine if it is more likely than not that the fair value of a reporting unit is less than its carrying amount. If the qualitative assessment is not conclusive, the Company tests goodwill for impairment, including comparing the fair value of the reporting unit to its carrying value (including attributable goodwill). The Company determines fair value of its reporting unit using an income or market approach incorporating market participant considerations and management’s assumptions on revenue growth rates, operating margins, discount rates and expected capital expenditures. Fair value determinations may include both internal and third-party valuations. The Company performs its annual goodwill impairment assessment during the third quarter of each fiscal year and more frequently if circumstances otherwise dictate. In connection with the Company’s evaluation of indefinite-lived intangible asset impairment, the Company performs a qualitative assessment to determine if it is more likely than not that the fair value of the asset is less than its carrying amount. If the qualitative assessment is not conclusive, the Company proceeds to test for impairment by comparing the fair value of the asset to the carrying value. Fair value is determined based on estimated discounted future cash flow analyses that include significant management assumptions such as revenue growth rates, weighted-average costs of capital and assumed royalty rates. If the carrying value exceeds fair value, an impairment charge will be recorded to reduce the asset to fair value. Impairment of Long-Lived Assets The Company evaluates the recoverability of its long-lived assets, primarily comprised of property and equipment and operating lease right-of-use assets, for impairment whenever events or changes in circumstances indicate that the carrying amounts may not be recoverable. The Company performs impairment testing at the level that represents the lowest level for which identifiable cash flows are largely independent of the cash flows of other assets and liabilities. Recoverability is measured by comparing the carrying amounts to the expected future undiscounted cash flows attributable to the assets. If it is determined that an asset may not be recoverable, an impairment loss equal to the excess of the asset’s carrying value over its fair value is recorded. Fair value is determined based on estimated discounted future cash flows analyses. There were no impairment charges identified on the Company's long-lived assets for fiscal 2021 or fiscal 2019. For fiscal 2020, there were impairment charges incurred related to the 2020 restructuring plan as described within Note 14. Restructuring Plan. Product Warranties The Company’s products are covered by warranty to be free from defects in material and workmanship for a period of one year, except in the EU and select other countries where the Company provides a two-year warranty on all its products. At the time of sale, an estimate of future warranty costs is recorded as a component of cost of revenue and a warranty liability is recorded for estimated costs to satisfy the warranty obligation. The Company’s estimate of costs to fulfill its warranty obligations is based on historical experience and expectations of future costs to repair or replace. Legal Contingencies If a potential loss from any claim or legal proceeding is considered probable, and the amount can be reasonably estimated, the Company records a liability for an estimated loss. Legal fees are expensed as incurred and included in general and administrative expenses in the consolidated statements of operations and comprehensive income (loss). See Note 12. Commitments and Contingencies for additional information regarding legal contingencies. Treasury Stock The Company accounts for treasury stock acquisitions using the cost method. The Company accounts for the retirement of treasury stock by deducting its par value from common stock and reflecting any excess of cost over par value as a deduction from additional paid-in capital on the consolidated balance sheets. Fair Value Accounting Assets and liabilities recorded at fair value on the consolidated balance sheets are categorized based upon the level of judgment associated with the inputs used to measure their fair value. Fair value is estimated by applying the following hierarchy, which prioritizes the inputs used to measure fair value into three levels and bases the categorization within the hierarchy upon the lowest level of input that is available and significant to the fair value measurement: Level Input Input Definition Level 1 Quoted prices for identical assets or liabilities in active markets at the measurement date. Level 2 Inputs, other than quoted prices included in Level 1, such as quoted prices for similar assets or liabilities, in active markets or other inputs that are observable or can be corroborated with market data at the measurement date. Level 3 Unobservable inputs that reflect management's best estimate of what market participants would use in pricing the asset or liability at the measurement date. Foreign Currency Certain of the Company’s wholly owned subsidiaries have non-U.S. dollar functional currencies. The Company translates assets and liabilities of non-U.S. dollar functional currency subsidiaries into U.S. dollars using exchange rates in effect at the end of each period and stockholders’ equity at historical rates. Revenue and expenses for these subsidiaries are translated using rates that approximate those in effect during the period. Gains and losses from translation are recognized in foreign currency translation included in accumulated other comprehensive loss. The Company remeasures monetary assets or liabilities denominated in currencies other than the functional currency using exchange rates prevailing on the balance sheet date, and non-monetary assets and liabilities at historical rates. Foreign currency remeasurement and transaction gains and losses are included in other income (expense), net. Foreign currency remeasurement and transaction gains (losses) are recorded in other income (expense), net as follows: October 2, October 3, September 28, (In thousands) Foreign currency remeasurement and transaction gains (losses) $ 2,353 $ 6,594 $ (8,622) Revenue Recognition Revenue is recognized upon transfer of control of promised products or services to customers in an amount that reflects the consideration the Company expects to receive in exchange for those products or services. The Company's contracts generally include a combination of products and services. Revenue is allocated to distinct performance obligations and is recognized net of allowances for returns, discounts, sales incentives and any taxes collected from customers, which are subsequently remitted to governmental authorities. Shipping and handling costs associated with outbound freight after control over a product has transferred to a customer are not considered a separate performance obligation and are accounted for as a fulfillment cost and are included in cost of revenue. As of October 2, 2021, and October 3, 2020, the Company did not have any material assets related to incremental costs to obtain or fulfill customer contracts. In fiscal 2018, the Company adopted ASC 606 using the full retrospective transition method which resulted in an acceleration of revenue and related costs of revenue and most significantly, a reduction in deferred costs and revenue and deferred revenue at each balance sheet date. Nature of Products and Services Product revenue primarily includes sales of Sonos speakers and Sonos system products, which include software that enables the Company’s products to operate over a customer’s wireless network, as well as connect to various third-party services, including music and voice. The Company also generates a small portion of revenue from Partner products and other revenue sources in connection with partnerships, accessories, professional services, licensing, advertising, and subscription revenue. Revenue for module units is related to hardware and embedded software that is integrated into final products that are manufactured and sold by the Company's partners. Software primarily consists of firmware embedded in the products and the Sonos app, which is software that can be downloaded to consumer devices at no charge, with or without the purchase of one of the Company’s products. Products and related software are accounted for as a single performance obligation and all intended functionality is available to the customer upon purchase. The revenue allocated to the products and related software is the substantial portion of the total sale price. Product revenue is recognized at the point in time when control is transferred, which is either upon shipment or upon delivery to the customer, depending on delivery terms. Service revenue includes revenue allocated to (i) unspecified software upgrades and (ii) cloud-based services that enable products to access third-party music and voice assistant platforms, based on relative standalone selling price, which are each distinct performance obligations and are provided to customers at no additional charge. Unspecified software upgrades are provided on a when-and-if-available basis and have historically included updates and enhancements such as bug fixes, feature enhancements and updates to the ability to connect to third-party music or voice assistant platforms. Service revenue is recognized ratably over the estimated service period. Significant Judgments The Company’s contracts with customers generally contain promises to transfer products and services as described above. Determining whether products and services are considered distinct performance obligations that should be accounted for separately requires significant judgment. Determining the SSP for each distinct performance obligation requires judgment. The Company estimates SSP for items that are not sold separately, which include the products and related software, unspecified software upgrades and cloud-based services, using information that may include competitive pricing information, where available, as well as analyses of the cost of providing the products or services plus a reasonable margin. In developing SSP estimates, the Company also considers the nature of the products and services and the expected level of future services. Determining the revenue recognition period for unspecified software upgrades and cloud-based services also requires judgment. The Company recognizes revenue attributable to these performance obligations ratably over the best estimate of the period that the customer is expected to receive the services. In developing the estimated period of providing future services, the Company considers past history, plans to continue to provide services, including plans to continue to support updates and enhancements to prior versions of the Company’s products, expected technological developments, obsolescence, competition and other factors. The estimated service period may change in the future in response to competition, technology developments and the Company’s business strategy. The Company offers sales incentives through various programs consisting primarily of discounts, cooperative advertising and market development fund programs. The Company records cooperative advertising and market development fund programs with customers as a reduction to revenue unless it receives a distinct benefit in exchange for credits claimed by the customer and can reasonably estimate the fair value of the benefit received, in which case the Company records it as an expense. The Company recognizes a liability or a reduction to accounts receivable, and reduces revenue based on the estimated amount of sales incentives that will be claimed by customers. Estimates for sales incentives are developed using the most likely amount and are included in the transaction price to the extent that a significant reversal of revenue would not result once the uncertainty is resolved. In developing its estimate, the Company also considers the susceptibility of the incentive to outside influences, the length of time until the uncertainty is resolved and the Company’s experience with similar contracts. Reductions in revenue related to discounts are allocated to products and services on a relative basis based on their respective SSP. Judgment is required to determine the timing and amount of recognition of marketing funds which the Company estimates based on past practice of providing similar funds. The Company accepts returns from direct customers and from certain resellers. To establish an estimate for returns, the Company uses the expected value method by considering a portfolio of contracts with similar characteristics to calculate the historical returns rate. When determining the expected value of returns, the Company considers future business initiatives and relevant anticipated future events. Supplier Concentration The Company relies on third parties for the supply and manufacture of its products, as well as third-party logistics providers. In instances where these parties fail to perform their obligations, the Company may be unable to find alternative suppliers or satisfactorily deliver its products to customers on time, if at all. During fiscal 2021, 2020 and 2019, approximately 59%, 65% and 83%, respectively, of the Company’s finished goods purchased during each year were from one vendor. Deferred Revenue and Payment Terms The Company invoices each order upon hardware shipment or delivery and recognizes revenue for each distinct performance obligation when transfer of control has occurred, which in the case of services, may extend over several reporting periods. Amounts invoiced in advance of revenue recognition are recorded as deferred revenue on the consolidated balance sheets. Deferred revenue primarily relates to revenue allocated to unspecified software upgrades and platform services, as well as for newly launched products sold to resellers not recognized until the date of general availability is reached. General availability deferrals are classified as current deferred revenue as the Company starts shipping the product to the reseller within one month prior to the general availability date. The Company classifies deferred revenue as noncurrent if amounts are expected to be recognized as revenue beyond one year from the balance sheet date. Payment Terms Payment terms and conditions vary among the Company’s distribution channels although terms generally include a requirement of payment within 30 days of product shipment. Sales directly to customers from the Company’s website are paid at the time of product shipment. Prior to providing payment terms to customers, an evaluation of the customer’s credit risk is performed. Contractual allowances are an offset to accounts receivable. Research and Development Research and development expenses consist primarily of personnel-related expenses, consulting and outside professional service costs, tooling and prototype materials and overhead costs. Substantially all of the Company’s research and development expenses are related to developing new products and services and improving existing products and services. To date, software development costs have been expensed as incurred because the period between achieving technological feasibility and the release of the software has been short and development costs qualifying for capitalization have been insignificant. In-process research and development ("IPRD") assets represent the fair value of incomplete research and development projects obtained as part of a business combination that have not yet reached technological feasibility and are initially not subject to amortization; rather, these assets are subject to impairment considerations of indefinite-lived intangible assets. Upon completion of development, IPRD assets are considered definite-lived intangible assets, transferred to developed technology and are amortized over their useful lives. If a project were to be abandoned, the IPRD would be considered fully impaired and expensed to Research and development. Advertising Costs Advertising costs are expensed as incurred and included in sales and marketing expenses. Advertising expenses were $62.3 million, $43.9 million and $48.8 million for fiscal 2021, 2020 and 2019, respectively. Restructuring and Related Costs Costs associated with a restructuring plan generally consist of involuntary employee termination benefits, contract termination costs, and other exit-related costs including costs to close facilities. The Company records a liability for involuntary employee termination benefits when management has committed to a plan that establishes the terms of the arrangement and that plan has been communicated to employees. Costs to terminate a contract before the end of the term are recognized on the termination date, and costs that will continue to be incurred in a contract for the remaining term without economic benefit are recognized as of the cease-use date. Restructuring and related costs may also include the write-down of related assets, including operating lease right-of-use assets, when the sale or abandonment of the asset is a direct result of the plan. Other exit-related costs are recognized as incurred. Restructuring and related costs are recognized as an operating expense within the consolidated statements of operations and comprehensive income (loss) and are classified based on the Company's classification policy for each category of operating expense. Stock-Based Compensation The Company measures stock-based compensation cost at fair value on the date of grant. Compensation cost for stock options is recognized, on a straight-line basis, as an expense over the period of vesting as the employee performs the related services, net of estimated forfeitures. The Company estimates the fair value of stock option awards using the Black-Scholes option-pricing model. The Company estimates forfeitures based on expected future terminations and will revise rates, as necessary, in subsequent periods if actual forfeitures differ from initial estimates. The fair value of RSUs is based on the Company's closing stock price on the trading day immediately preceding the date of grant. Retirement Plans The Company has a defined contribution 401(k) plan (the "401(k) Plan") for the Company’s U.S.-based employees, as well as various defined contribution plans for its international employees. Eligible U.S. employees may make tax-deferred contributions under the 401(k) plan, but are limited to the maximum annual dollar amount allowable under the Internal Revenue Code of 1986, as amended (the "Code"). The Company matches contributions towards the 401(k) Plan and international defined contribution plans. The Company's matching contributions totaled $7.6 million and $6.2 million for fiscal 2021 and 2020, respectively. Income Taxes The Company accounts for income taxes under the asset and liability method, which requires the recognition of deferred tax assets and liabilities for the expected future tax consequences of events that have been included in the consolidated financial statements. Under this method, deferred tax assets and liabilities are determined based on the differences between the consolidated financial statements and tax basis of assets and liabilities using enacted tax rates in effect for the year in which the differences are expected to reverse. The effect of a change in tax rates on deferred tax assets and liabilities is recognized in income during the period that includes the enactment date. The Company records a valuation allowance when necessary to reduce its deferred tax assets to amounts that are more likely than not to be realized. In making such a determination, all available positive and negative evidence is considered, including future reversals of existing taxable temporary differences, projected future taxable income, tax-planning strategies, and results of recent operations. If the Company determines that it would be able to realize its deferred tax assets in the future in excess of their net recorded amount, the Company would make an adjustment to the deferred tax asset valuation allowance, which would result in a benefit to income taxes. The Company records uncertain tax positions in accordance with a two-step process whereby (i) the Company determines whether it is more likely than not that the tax positions will be sustained on the basis of the technical merits of the position and (ii) for those tax positions that meet the more likely than not recognition threshold, the Company recognizes the largest amount of tax benefit that is more than 50% likely to be realized upon ultimate settlement with the related tax authority. The Company includes interest and penalties related to unrecognized tax benefits within the provision for income taxes in the consolidated statements of operations and comprehensive income (loss). The Company has not incurred any interest or penalties related to unrecognized tax benefits in any of the periods presented. The Company’s provision for (benefit from) income taxes, deferred tax assets and liabilities and liabilities for unrecognized tax benefits involves the use of estimates, assumptions and judgments. Although the Company believes its estimates, assumptions and judgments to be reasonable, any changes in tax law or its interpretation of tax laws and the resolutions of potential tax audits could significantly impact the amounts provided for income taxes in the Company’s consolidated financial statements. Actual future operating results and the underlying amount and type of income could differ materially from the Company’s estimates, assumptions and judgments thereby impacting the Company’s financial position and results of operations. Segment Information The Company operates as one operating segment as it only reports aggregate financial information on a consolidated basis, accompanied by disaggregated information about revenue by geographic region and product category to its Chief Executive Officer, who is the Company’s chief operating decision maker. Leases The substantial majority of the Company’s leases are for its office spaces and facilities, which are accounted for as operating leases. The Company determines whether an arrangement is a lease at inception if there is an identified asset, and if it has the right to control the identified asset for a period of time. Some of the Company’s leases include options to extend the leases for up to 5 years, and some include options to termin

Fair Value Measurements

Fair Value Measurements	12 Months Ended
	Oct. 02, 2021
Fair Value Disclosures [Abstract]
Fair Value Measurements	Fair Value Measurements The carrying values of the Company’s financial instruments, including accounts receivable and accounts payable, approximate their fair values due to the short period of time to maturity or repayment. The following table summarizes fair value measurements by level for the assets measured at fair value on a recurring basis as of October 2, 2021, and October 3, 2020: October 2, 2021 Level 1 Level 2 Level 3 Total (In thousands) Assets: Money market funds (cash equivalents) $ 484,482 $ — $ — $ 484,482 October 3, 2020 Level 1 Level 2 Level 3 Total (In thousands) Assets: Money market funds (cash equivalents) $ 281,380 $ — $ — $ 281,380

Revenue and Geographic Informat

Revenue and Geographic Information	12 Months Ended
	Oct. 02, 2021
Revenue from Contract with Customer [Abstract]
Revenue and Geographic Information	Revenue and Geographic Information Disaggregation of Revenue Revenue by geographical region also includes the applicable service revenue for software upgrades and cloud-based services attributable to each region and is based on ship-to address, is as follows: October 2, October 3, September 28, (In thousands) Americas $ 980,931 $ 755,874 $ 678,224 Europe, Middle East and Africa ("EMEA") 618,476 470,883 484,785 Asia Pacific ("APAC") 117,337 99,571 97,814 Total revenue $ 1,716,744 $ 1,326,328 $ 1,260,823 Revenue is attributed to individual countries based on ship-to address and also includes the applicable service revenue for software upgrades and cloud-based services attributable to each country. Revenue by significant countries is as follows: October 2, October 3, September 28, (In thousands) United States $ 890,837 $ 697,410 $ 630,012 Other countries 825,907 628,918 630,811 Total revenue $ 1,716,744 $ 1,326,328 $ 1,260,823 Revenue by product category also includes the applicable service revenue for software upgrades and cloud-based services attributable to each product category. Revenue by major product category is as follows: October 2, October 3, September 28, (In thousands) Sonos speakers $ 1,378,808 $ 1,034,813 $ 1,008,422 Sonos system products 265,180 218,788 187,172 Partner products and other revenue 72,756 72,727 65,229 Total revenue $ 1,716,744 $ 1,326,328 $ 1,260,823 Disaggregation of Property and Equipment Property and equipment, net by country as of October 2, 2021, and October 3, 2020 were as follows: October 2, October 3, (In thousands) United States $ 40,669 $ 35,372 China 23,460 17,624 Other countries 7,212 7,788 Property and equipment, net $ 71,341 $ 60,784

Balance Sheet Components

Balance Sheet Components	12 Months Ended
	Oct. 02, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Balance Sheet Components	Balance Sheet Components The following tables show the Company’s balance sheet component details. Accounts Receivable Allowances The following table summarizes changes in the allowance for credit losses for fiscal 2021, and the allowance for doubtful accounts for fiscal 2020 and 2019: October 2, October 3, September 28, (In thousands) Beginning balance $ 1,307 $ 1,255 $ 872 Increases 1,529 1,127 1,034 Write-offs (1,289) (1,075) (651) Ending balance $ 1,547 $ 1,307 $ 1,255 The following table summarizes the changes in the allowance for sales incentives for fiscal 2021, 2020 and 2019: October 2, October 3, September 28, (In thousands) Beginning balance $ 17,515 $ 20,051 $ 11,754 Charged to revenue 95,249 108,843 87,703 Utilization of sales incentive allowance (93,604) (111,379) (79,406) Ending balance $ 19,160 $ 17,515 $ 20,051 Inventories Inventories, net, consist of the following: October 2, October 3, (In thousands) Finished goods $ 154,608 $ 172,184 Components 30,522 8,646 Inventories $ 185,130 $ 180,830 The Company writes down inventory as a result of excess and obsolete inventories, or when it believes that the net realizable value of inventories is less than the carrying value. Property and Equipment, Net Property and equipment, net consist of the following: October 2, October 3, (In thousands) Computer hardware and software $ 40,098 $ 45,798 Furniture and fixtures 7,483 8,239 Tooling and production line test equipment 76,210 67,495 Leasehold improvements 49,846 51,102 Product displays 57,863 48,925 Total property and equipment 231,500 221,559 Accumulated depreciation and amortization (160,159) (160,775) Property and equipment, net $ 71,341 $ 60,784 Depreciation expense was $31.8 million, $34.9 million and $36.4 million for fiscal 2021, 2020 and 2019, respectively. During fiscal 2021, 2020 and 2019, the Company abandoned and disposed of gross fixed assets of $32.9 million, $18.5 million and $10.2 million, with accumulated depreciation of $32.2 million, $14.2 million and $9.3 million, respectively. Disposals of fixed assets were recorded in operating expenses in the consolidated statements of operations and comprehensive income (loss) and resulted in losses of $0.7 million, $4.3 million and $0.8 million for fiscal 2021, 2020 and 2019, respectively. For further detail regarding the property and equipment that was abandoned as part of the 2020 restructuring plan, refer to Note 14. Restructuring Plan. Intangible Assets The following table reflects the changes in the net carrying amount of the components of intangible assets associated with the Company's acquisition activity: October 2, 2021 Gross Carrying Amount Accumulated Amortization Net Carrying Value Weighted-Average Remaining Life (In thousands, except weighted-average remaining life) Technology $ 7,752 $ (3,405) $ 4,347 2.67 Other 39 (36) 3 0.17 Total finite-lived intangible assets 7,791 (3,441) 4,350 2.67 In-process research and development and other intangible assets not subject to amortization 20,100 — 20,100 Total intangible assets $ 27,891 $ (3,441) $ 24,450 The following table summarizes the estimated future amortization expense of the Company's intangible assets as October 2, 2021: Fiscal years ending Future Amortization Expense (In thousands) 2022 $ 1,917 2023 1,243 2024 1,020 2025 170 2026 and thereafter — Total future amortization expense $ 4,350 Accrued Expenses Accrued expenses consisted of the following: October 2, October 3, (In thousands) Accrued advertising and marketing $ 19,989 $ 10,609 Accrued taxes 16,941 6,252 Accrued inventory 37,117 2,843 Accrued manufacturing, logistics and product development 14,943 9,753 Accrued general and administrative 13,066 10,068 Accrued restructuring 114 1,062 Other accrued payables 5,859 4,462 Total accrued expenses $ 108,029 $ 45,049 Deferred Revenue Amounts invoiced in advance of revenue recognition are recorded as deferred revenue on the consolidated balance sheets. For the fiscal year ended October 2, 2021, deferred revenue included revenue allocated to unspecified software upgrades and cloud-based services of $70.4 million, as well as current deferred revenue related to newly launched products sold to resellers not recognized as revenue until the date of general availability was reached. The following table presents the changes in the Company's deferred revenue balances for the fiscal years ended October 2, 2021, October 3, 2020, and September 28, 2019: October 2, October 3, September 28, (In thousands) Deferred revenue, beginning of period $ 62,389 $ 56,449 $ 50,967 Recognition of revenue included in beginning of period deferred revenue (19,175) (13,052) (11,934) Revenue deferred, net of revenue recognized on contracts 46,284 18,992 17,416 Deferred revenue, end of period $ 89,498 $ 62,389 $ 56,449 The Company expects the following recognition of deferred revenue as of October 2, 2021: For the fiscal years ending 2022 2023 2024 2025 2026 and Beyond Total (In thousands) Revenue expected to be recognized $ 35,866 $ 14,867 $ 12,805 $ 10,476 $ 15,484 $ 89,498 Other Current Liabilities Other current liabilities consist of the following: October 2, October 3, (In thousands) Reserve for returns $ 19,266 $ 14,195 Short-term operating lease liabilities 10,724 10,910 Product warranty liability 5,604 3,628 Other 3,950 2,417 Total other current liabilities $ 39,544 $ 31,150 The following table presents the changes in the Company’s warranty liability for the fiscal years ended October 2, 2021, and October 3, 2020: October 2, October 3, (In thousands) Warranty liability, beginning of period $ 3,628 $ 3,254 Provision for warranties issued during the period 15,304 12,711 Settlements of warranty claims during the period (13,328) (12,337) Warranty liability, end of period $ 5,604 $ 3,628

Leases

Leases	12 Months Ended
	Oct. 02, 2021
Leases [Abstract]
Leases	Leases The Company entered into various non-cancelable lease agreements for offices and facilities, as well as auto leases. The substantial majority of the Company's leases are for its office spaces and facilities, which are accounted for as operating leases. The Company's main offices are leased in California and Massachusetts, with additional sales, operations, and research and development offices around the world. These facilities operate under leases with initial terms from one For leases with terms greater than 12 months, the Company records the related right-of-use asset and lease obligation at the present value of lease payments over the lease terms. Leases with an initial term of 12 months or less are not recorded on the balance sheet. Lease expense is recognized on a straight-line basis over the lease term. The Company's leases do not include any residual value guarantees, bargain purchase options or asset retirement obligations. Lease agreements will typically exist with lease and non-lease components, which are accounted for separately. The Company's agreements may contain variable lease payments. The Company includes variable lease payments that depend on an index or a rate and exclude those which depend on facts or circumstances occurring after the commencement date, other than the passage of time. Most of the Company's leases do not contain an implicit interest rate. Therefore, the Company uses judgment to estimate an incremental borrowing rate, which is defined as the rate of interest the Company would have to pay to borrow an amount that is equal to the lease obligations, on a collateralized basis, and over a similar term. The Company takes into consideration the terms of the Company's Credit Facility (as defined in Note 7. Debt), lease terms, and current interest rates to determine the incremental borrowing rate at lease commencement date. At October 2, 2021, the Company's weighted-average discount rate was 4.07%, while the weighted-average remaining lease term was 3.8 years. As part of the supplemental cash flow disclosure, the right-of-use assets obtained in exchange for new operating lease liabilities does not reflect the impact of prepaid or deferred rent. The components of lease expense for the fiscal year ended October 2, 2021, was as follows: Year Ended October 2, (In thousands) Operating lease cost $ 11,376 Short-term lease cost 392 Variable lease cost 3,836 Total lease cost $ 15,604 For the fiscal years ended October 2, 2021, and October 3, 2020, rent expense, including leases for offices and facilities as well as auto leases, was $11.8 million and $13.4 million, respectively, and common area maintenance expense was $3.8 million and $5.0 million, respectively. The following table summarizes the maturity of lease liabilities under operating leases as of October 2, 2021: Fiscal years ending Operating leases (In thousands) 2022 $ 13,407 2023 13,263 2024 12,168 2025 9,048 2026 1,672 Thereafter 134 Total lease payments 49,692 Less imputed interest (5,008) Total lease liabilities (1) $ 44,684

Debt

Debt	12 Months Ended
	Oct. 02, 2021
Debt Disclosure [Abstract]
Debt	Debt The Company's debt obligation consists of the Secured Credit Facility with J.P. Morgan Chase Bank, N.A. (the “Credit Facility”). In January 2021, the Company repaid all of its outstanding principal balance of $24.9 million under the J.P. Morgan Chase Bank, N.A. Secured Term Loan (the "Term Loan") which had an original maturity date of October 28, 2021. As of October 2, 2021, the Company did not have any remaining short- or long-term debt obligations, and as of October 3, 2020, the Company’s short- and long-term debt obligations were as follows: October 3, 2020 Rate Balance (In thousands) Term Loan (1) 2.4 % $ 25,000 Unamortized debt issuance costs (2) (82) Total indebtedness 24,918 Less short term portion (6,667) Long-term debt $ 18,251 (1) Original maturity date of October 28, 2021, and bore interest at a variable rate equal to an adjusted LIBOR plus 2.25%, payable quarterly. (2) Debt issuance costs were recorded as a debt discount and charged to interest expense over the term of the agreement. The Credit Facility allowed the Company to borrow up to $80.0 million restricted to the value of the borrowing base, which was based on the value of inventory and accounts receivable and was subject to quarterly redetermination. The Credit Facility had an original maturity date of October 28, 2021, and could be drawn as Commercial Bank Floating Rate Loans (at the higher of prime rate or adjusted LIBOR plus 2.50%) or Eurocurrency Loans (at LIBOR plus an applicable margin). As of October 2, 2021, and October 3, 2020, the Company had no outstanding borrowings and $2.9 million and $0.5 million, respectively, in undrawn letters of credit that reduce the availability under the Credit Facility. Debt obligations under the Credit Facility and the Term Loan required the Company to maintain a consolidated fixed charge ratio of at least 1.0, restrict distribution of dividends unless certain conditions were met, such as having a fixed charge

Stockholders' Equity

Stockholders' Equity	12 Months Ended
	Oct. 02, 2021
Equity [Abstract]
Stockholders' Equity	Stockholders' Equity Share Repurchase Program On November 17, 2020, the Board of Directors authorized a common stock repurchase program of up to $50.0 million. During the fiscal year ended October 2, 2021, the Company repurchased 1,394,006 shares for an aggregate purchase price of $50.0 million at an average price of $35.86 per share under the repurchase program. As of October 2, 2021, the Company fully utilized the amount available under this stock repurchase program. Treasury stock during the fiscal year ended October 2, 2021, included shares withheld to satisfy employees' tax withholding requirements in connection with vesting of RSUs. Additionally, during the fiscal year ended October 2, 2021, the Company retired 2,602,208 shares of treasury stock. The Company accounts for the retirement of treasury stock by deducting its par value from common stock and reflecting any excess of cost over par value as a deduction from additional paid-in-capital on the consolidated balance sheets.

Stock-Based Compensation

Stock-Based Compensation	12 Months Ended
	Oct. 02, 2021
Share-based Payment Arrangement [Abstract]
Stock-Based Compensation	Stock-Based Compensation 2018 Equity Incentive Plan In July 2018, the Board of Directors (the "Board") adopted the 2018 Equity Incentive Plan (the “2018 Plan”). The 2018 Plan became effective in connection with the Company's initial public offering ("IPO"). The number of shares reserved for issuance under the 2018 Plan increases automatically on January 1 of each year beginning in 2019 and continuing through 2028 by a number of shares of common stock equal to the lesser of (x) 5% of the total outstanding shares of the Company’s common stock and common stock equivalents as of the immediately preceding December 31 (rounded to the nearest whole share) and (y) a number of shares determined by the Company's the Board. As of October 2, 2021, there were 34,376,127 shares reserved for future issuance under the 2018 Plan. Stock Options Pursuant to the 2018 Plan, the Company issues stock options to employees and directors. The fair value of the stock options is based on the Company’s closing stock price on the trading day immediately prior to the date of grant. The option price, number of shares and grant date are determined at the discretion of the Board. For so long as the option holder performs services for the Company, the options generally vest over 48 months, on a monthly or quarterly basis, with certain options subject to an initial annual cliff vest, and are exercisable for a period not to exceed ten years from the date of grant. The summary of the Company’s stock option activity is as follows: Number of Weighted-Average Exercise Price Weighted-Average Remaining Contractual Term Aggregate Intrinsic Value (In years) (In thousands) Outstanding at October 3, 2020 28,422,940 $ 12.03 5.6 $ 99,053 Exercised (13,397,782) $ 11.04 Forfeited (479,919) $ 14.44 Outstanding at October 2, 2021 14,545,239 $ 12.86 5.1 $ 282,141 At October 2, 2021 Options exercisable 12,723,601 $ 12.62 4.9 $ 249,899 Options vested and expected to vest 14,404,584 $ 12.85 5.1 $ 279,604 The Company granted no options in fiscal 2021 and fiscal 2020. During fiscal 2019, the Company granted options with a fair value of $8.4 million with a weighted-average grant date fair value of $4.91 per share. Options vested in 2021, 2020 and 2019, respectively, have a fair value of $10.8 million, $27.4 million, and $34.3 million. The total intrinsic value of stock options exercised was $242.7 million, $40.1 million and $61.1 million for fiscal 2021, 2020 and 2019, respectively. As of October 2, 2021, and October 3, 2020, the Company had $6.2 million and $16.9 million, respectively, of unrecognized stock-based compensation cost, which is expected to be recognized over a weighted-average period of 0.9 years and 1.5 years, respectively. The Company’s policy for issuing stock upon stock option exercise is to issue new common stock. Restricted Stock Units Pursuant to the 2018 Plan, the Company issues RSUs to employees and directors. The fair value of RSUs is based on the Company's closing stock price on the trading day immediately preceding the date of grant. RSUs vest quarterly over the service period, which is generally four years with certain awards subject to an initial annual cliff vest. The summary of the Company’s unvested RSU activity is as follows: Number of Weighted-Average Grant Date Fair Value Aggregate Intrinsic Value (In thousands) Outstanding at October 3, 2020 11,647,951 $ 10.50 $ 180,543 Granted 2,860,688 $ 19.07 Released (4,146,278) $ 11.38 Forfeited (1,078,836) $ 11.45 Outstanding at October 2, 2021 9,283,525 $ 12.64 $ 299,487 At October 2, 2021 Units expected to vest 7,887,232 $ 12.54 $ 254,442 As of October 2, 2021, the Company had $90.0 million of unrecognized stock-based compensation expense related to RSUs, which is expected to be recognized over a weighted-average period of 2.5 years. Performance Stock Units ("PSU") Pursuant to the 2018 Plan, the Company has issued and may issue certain PSUs that vest on the satisfaction of service and performance conditions. The Company estimates the fair value of PSUs on the grant date and recognizes compensation expense in the period it becomes probable that performance conditions will be achieved. On a quarterly basis, the Company re-evaluates the assumption of the probability that performance conditions will be satisfied and revises its estimates as appropriate as new or updated information becomes available. The summary of the Company’s PSU activity is as follows: Number of Weighted-Average Grant Date Fair Value Aggregate Intrinsic Value (In thousands) Outstanding at October 3, 2020 — $ — $ — Granted 158,521 $ 22.81 Vested — Forfeited — Outstanding at October 2, 2021 158,521 $ 22.81 $ 5,114 As of October 2, 2021, the Company had $3.6 million of unrecognized stock-based compensation expense related to PSUs, which is expected to be recognized over a weighted-average period of 1.2 years. Stock-based Compensation Total stock-based compensation expense by function category was as follows: October 2, October 3, September 28, (In thousands) Cost of revenue $ 988 $ 1,106 $ 985 Research and development 25,075 23,439 17,643 Sales and marketing 13,570 14,359 12,965 General and administrative 22,494 18,706 14,982 Total stock-based compensation expense $ 62,127 $ 57,610 $ 46,575

Income Taxes

Income Taxes	12 Months Ended
	Oct. 02, 2021
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes The Company’s income (loss) before provision for (benefit from) income taxes for fiscal 2021, 2020 and 2019 were as follows: October 2, October 3, September 28, (In thousands) Domestic $ 126,810 $ (15,194) $ (858) Foreign 30,115 (4,889) (218) Income (loss) before provision for (benefit from) income taxes $ 156,925 $ (20,083) $ (1,076) Components of the provision for (benefit from) income taxes consisted of the following: October 2, October 3, September 28, (In thousands) Current: U.S. Federal $ — $ (1,388) $ 1,366 U.S. State 440 724 1,132 Foreign 6,216 1,220 1,463 Total current 6,656 556 3,961 Deferred: U.S. Federal — — — U.S. State — — — Foreign (8,326) (524) (271) Total deferred (8,326) (524) (271) Provision for (benefit from) income taxes $ (1,670) $ 32 $ 3,690 The Company is subject to income taxes in the United States and foreign jurisdictions in which it operates. The Company’s tax provision is impacted by the jurisdictional mix of earnings as its foreign subsidiaries have statutory tax rates different from those in the United States. Components of the Company’s deferred income tax assets and liabilities are as follows: October 2, October 3, (In thousands) Deferred tax assets Accrued expenses and reserves $ 18,601 $ 12,014 Deferred revenue 13,915 11,831 U.S. net operating loss carryforwards 25,284 8,242 Foreign net operating loss carryforwards 13,240 12,183 Research & development tax credit carryforwards 77,607 53,543 Stock-based compensation 9,082 11,018 Operating lease liability 9,908 14,377 U.S. amortization 8,031 7,648 Depreciation 1,875 1,101 Other 428 603 Total deferred tax assets 177,971 132,560 Valuation allowance (155,978) (113,939) Deferred tax assets, net of valuation allowance 21,993 18,621 Deferred tax liabilities Tax accounting method change (962) (2,946) Right-of-use asset (7,388) (9,914) Foreign amortization (5,833) (6,093) Depreciation (32) (187) Other (144) (115) Total deferred tax liabilities (14,359) (19,255) Net deferred tax assets (liabilities) $ 7,634 $ (634) Reported as Deferred tax assets $ 10,028 $ 1,800 Deferred tax liabilities (2,394) (2,434) Net deferred tax assets (liabilities) $ 7,634 $ (634) The Company has assessed, on a jurisdictional basis, the realization of its net deferred tax assets, including the ability to carry back net operating losses, the existence of taxable temporary differences, the availability of tax planning strategies and available sources of future taxable income. The Company has concluded that based on cumulative taxable income and future taxable income that it is able to realize a benefit for net deferred tax assets in certain foreign jurisdictions. In addition, the Company has concluded that a valuation allowance on its net deferred tax assets in the U.S. and certain foreign jurisdictions continues to be appropriate considering cumulative taxable losses in recent years and uncertainty with respect to future taxable income. During the fiscal year ended October 2, 2021, the Company determined that the net deferred tax asset of its Netherlands subsidiary was more-likely-than-not realizable and released valuation allowance of $7.8 million as an income tax benefit. The Company determined that the positive evidence, principally the Netherlands subsidiary being in a cumulative taxable income position with forecasts of future taxable income, outweighed the negative evidence, resulting in the valuation allowance release. It is possible that within the next 12 months there may be sufficient positive evidence to release a portion or all of the remaining valuation allowance. Release of the remaining valuation allowance would result in a benefit to income tax expense for the period the release is recorded, which could have a material impact on net earnings. The timing and amount of the potential valuation allowance release are subject to significant management judgment, as well as prospective earnings in the United States and certain other foreign entities and jurisdictions. As of October 2, 2021, the Company had gross U.S. federal net operating loss carryforwards of $101.4 million, of which $70.3 million have an indefinite life and $31.1 million expire beginning in 2035, gross state net operating loss carryforwards of $64.6 million, which expire beginning in 2027, and gross foreign net operating loss carryforwards of $53.3 million with an indefinite life. As of October 2, 2021, the Company also had gross federal and state research and development tax credit carryforwards of $62.0 million and $44.3 million, respectively. The federal research and development tax credits will begin to expire in 2025, and the state research and development tax credits will begin to expire in 2024. Because of the change of ownership provisions of Sections 382 and 383 of the Internal Revenue Code, and similar state provisions, use of a portion of the Company’s U.S. federal and state net operating loss and research and development tax credit carryforwards may be limited in future periods depending upon changes in ownership. Further, a portion of the carryforwards may expire before being applied to reduce future taxable income and income tax liabilities if sufficient taxable income is not generated in future periods. The following table summarizes changes in the valuation allowance for fiscal 2021, 2020 and 2019: October 2, October 3, September 28, (In thousands) Beginning balance $ 113,939 $ 95,088 $ 72,380 Increase during the period 49,791 18,851 22,708 Decrease during the period (7,752) — — Ending balance $ 155,978 $ 113,939 $ 95,088 Reconciliation of U.S. statutory federal income taxes to the Company’s provision for (benefit from) income taxes is as follows: October 2, October 3, September 28, (In thousands) U.S. federal income taxes at statutory rate $ 32,954 $ (4,217) $ (226) U.S. state and local income taxes, net of federal benefit and state credits (9,473) (2,798) (9,315) Foreign income tax rate differential 1,430 (75) 129 Stock-based compensation (47,496) 869 (2,399) Federal research and development tax credits (21,535) (8,012) (8,418) Unrecognized federal tax benefits 4,041 815 (2,806) Change in tax rate (2,681) — 1,161 Global intangible low taxed income, net of foreign tax credits — — 239 Base erosion and anti-abuse tax — (781) 781 Other (565) 598 822 Change in valuation allowance 41,655 13,633 23,722 Provision for income taxes $ (1,670) $ 32 $ 3,690 In January 2017, the Company entered into a unilateral Advance Pricing Agreement (the "APA") with the Dutch Tax Administration. The APA establishes an intercompany licensing arrangement whereby the operating profit or loss, as determined under U.S. GAAP, of Sonos Europe B.V. and Sonos, Inc. will be allocated between the two companies based on relative contribution to the development of marketing and technology intangibles. The APA has a five-year term that commenced on October 2, 2016, and ended on September 30, 2021. The Company expects operating profit or loss of Sonos Inc. and Sonos Europe B.V. to continue to be allocated in a similar manner for future taxable years. Change in gross unrecognized tax benefits, excluding interest and penalties, as a result of uncertain tax positions are as follows: October 2, October 3, September 28, (In thousands) Beginning balance $ 14,721 $ 12,527 $ 17,794 Decrease - tax positions in prior periods (4) (768) (8,226) Increase - tax positions in current periods 6,535 2,962 2,959 Ending balance $ 21,252 $ 14,721 $ 12,527 The Company does not anticipate material changes to its unrecognized benefits within the next 12 months that would result in a material change to the Company’s financial position. The unrecognized tax benefits as of October 2, 2021, would have no impact on the effective tax rate if recognized. The Company conducts business in a number of jurisdictions and, as such, is required to file income tax returns in multiple jurisdictions globally. U.S. federal income tax returns for the 2017 tax year and earlier are no longer subject to examination by the U.S. Internal Revenue Service (the "IRS"). All U.S. federal and state net operating losses as well as research and development tax credits generated to date, including 2017 and earlier, used in open tax years are subject to adjustment by the IRS and state tax authorities. The Company recognizes interest and penalties, if any, related to uncertain tax positions in income tax expense. There were no accrued interest or penalties as of October 2, 2021, and October 3, 2020. As of October 2, 2021, the Company continues to assert that the unremitted earnings in our foreign subsidiaries are permanently reinvested and therefore no deferred taxes or withholding taxes have been provided. If, in the future, the Company decides to repatriate its $5.4 million of undistributed earnings from these subsidiaries in the form of dividends or otherwise, the Company could be subject to withholding taxes payable at that time. Outside basis differences in the Company's foreign subsidiaries including unremitted earnings and any related taxes are not material.

Net Income (Loss) Per Share Att

Net Income (Loss) Per Share Attributable to Common Stockholders	12 Months Ended
	Oct. 02, 2021
Earnings Per Share [Abstract]
Net Income (Loss) Per Share Attributable to Common Stockholders	Net Income (Loss) Per Share Attributable to Common Stockholders Basic and diluted net income (loss) per share attributable to common stockholders is presented in conformity with the two-class method required for participating securities. The Company considers its redeemable convertible preferred stock to be participating securities as the holders of redeemable convertible preferred stock were entitled to receive noncumulative dividends in the event that a dividend was paid on common stock. Upon the closing of the IPO, all outstanding shares of the Company’s redeemable convertible preferred stock automatically converted into 32,482,590 shares of common stock on a one-for-one basis. Basic net income (loss) attributable to common stockholders per share is calculated by dividing net income (loss) attributable to common stockholders by the weighted-average number of shares of common stock outstanding less shares subject to repurchase. Diluted net income (loss) per share attributable to common stockholders adjusts the basic net income (loss) per share attributable to common stockholders and the weighted-average number of shares of common stock outstanding for the potentially dilutive impact of stock awards, using the treasury stock method. The following table sets forth the computation of the Company’s basic and diluted net income (loss) per share attributable to common stockholders: October 2, October 3, September 28, (In thousands, except share and per share data) Numerator: Net income (loss) attributable to common stockholders - basic and diluted $ 158,595 $ (20,115) $ (4,766) Denominator: Weighted-average shares of common stock - basic 122,245,212 109,807,154 103,783,006 Effect of potentially dilutive stock options 10,120,238 — — Effect of RSUs 7,875,245 — — Effect of PSUs 68,457 — — Weighted-average shares of common stock—diluted 140,309,152 109,807,154 103,783,006 Net income (loss) per share attributable to common stockholders: Basic $ 1.30 $ (0.18) $ (0.05) Diluted $ 1.13 $ (0.18) $ (0.05) The following potentially dilutive shares as of the end of each period presented were excluded from the computation of diluted net income (loss) per share for the periods presented because including them would have been antidilutive: October 2, October 3, September 28, Stock options to purchase common stock 9,030,004 33,503,698 42,300,183 Restricted stock units 3,505,140 9,225,127 4,147,463 Performance stock units 55,586 — — Total 12,590,730 42,728,825 46,447,646

Commitments and Contingencies

Commitments and Contingencies	12 Months Ended
	Oct. 02, 2021
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies Unconditional purchase obligations The following table summarizes future payments under the Company's unconditional purchase obligations as of October 2, 2021: Fiscal years ended Total 2022 2023 2024 2025 2026 Beyond (In thousands) Inventory-related purchase obligations $ 92,488 $ 92,488 $ — $ — $ — $ — $ — Other purchase obligations 57,112 32,447 20,898 3,767 — — — Total $ 149,600 $ 124,935 $ 20,898 $ 3,767 $ — $ — $ — Legal Proceedings From time to time, the Company is involved in legal proceedings in the ordinary course of business, including claims relating to employee relations, business practices and patent infringement. Litigation can be expensive and disruptive to normal business operations. Moreover, the results of complex legal proceedings are difficult to predict, and the Company’s view of these matters may change in the future as the litigation and events related thereto unfold. The Company expenses legal fees as incurred. The Company records a provision for contingent losses when it is both probable that a liability has been incurred and the amount of the loss can be reasonably estimated. An unfavorable outcome to any legal matter, if material, could have an adverse effect on the Company’s operations or its financial position, liquidity or results of operations. On January 7, 2020, the Company filed a complaint with the U.S. International Trade Commission ("ITC") against Alphabet Inc. ("Alphabet") and Google LLC ("Google") and a lawsuit in the U.S. District Court for the Central District of California against Google. The complaint and lawsuit each allege infringement of certain Sonos patents related to its smart speakers and related technology. On February 6, 2020, the ITC initiated a formal investigation into the Company’s claims. Google and Alphabet filed an initial answer in the ITC action on February 27, 2020, and an amended answer on April 3, 2020, denying infringement and alleging that the asserted patents are invalid. On August 13, 2021, an administrative law judge at the ITC issued an initial determination finding all five of Sonos' asserted patents to be valid and infringed by Google. The judge also ruled that certain proposed redesigns of Google products, one specific redesign per patent, would qualify as non-infringing alternatives to Google's current product designs. The full commission is expected to decide whether and to what extent it will review the initial determination on or before November 19, 2021. On March 4, 2020, the California District Court stayed the district court proceeding pending resolution of the ITC investigation. On March 11, 2020, Google filed an answer in the California District Court, denying infringement and alleging that the asserted patents are invalid. On September 28, 2020, Google filed for a declaratory judgement of non-infringement in the U.S. District Court for the Northern District of California related to five different Sonos patents. On September 29, 2020, the Company filed a lawsuit against Google in the U.S. District Court for Western District of Texas, alleging infringement of those five Sonos patents and seeking monetary damages and other non-monetary relief. This dispute over venue has now been resolved, with the case proceeding in the Northern District of California, where the judge has bifurcated the case, scheduling early disposition of two representative claims in mid-2022 and trial on all other claims in May 2023. On December 1, 2020, the Company filed a lawsuit against Google Germany GmbH and Google Ireland Ltd. in the regional court of Hamburg, Germany, alleging infringement of a Sonos patent related to control of playback of media by mobile and playback devices and seeking non-monetary relief. Sonos has chosen to withdraw these preliminary injunction actions after having received some preliminary relief. On June 11, 2020, Google filed a lawsuit in the U.S. District Court for the Northern District of California against the Company, alleging infringement of five Google patents generally related to noise cancellation, digital rights management, media search and wireless relays and seeking monetary damages and other non-monetary relief. On November 2, 2020, the California District Court granted Sonos’ motion to dismiss Google’s allegation of infringement of one of these five Google patents, specifically a patent generally related to media search, finding that the invention at issue is patent ineligible. On June 4, 2021, the California District Court granted a stipulation to dismiss Google's allegation of infringement of another asserted patent involving noise cancellation. On June 12, 2020, Google filed lawsuits in District Court Munich I against Sonos Europe B.V. and Sonos, Inc., alleging infringement of two Google patents generally related to digital rights management and search notifications, and seeking monetary damages and an injunction preventing sales of any infringing Sonos products. On January 14, 2021, Google amended its infringement complaint related to the search notifications patent to relate to a limited version of the claims, in view of prior art cited by the Company. On March 3, 2021, the District Court Munich stayed a case for infringement of the search notifications patent pending the outcome of a nullity action based on doubt as to the validity of the patent. On June 23, 2021, the Munich court issued a decision dismissing Google's complaint related to the digital rights management patent for lack of infringement of at least two claim features. On August 21, 2020, Google filed a lawsuit against Sonos, Inc. in Canada, alleging infringement of one Google patent generally related to noise cancellation technology. On August 21, 2020, Google filed a lawsuit against Sonos Europe B.V. and Sonos, Inc. in France, alleging infringement of two Google patents generally related to digital rights management and search notifications, and seeking monetary damages and an injunction preventing sales of any infringing Sonos products. On February 8, 2021, Google withdrew its infringement allegations regarding the search notifications patent in view of prior art brought to the attention of the court by the Company. In August 2020, Google filed a lawsuit against Sonos Europe B.V. and Sonos, Inc. in the Netherlands alleging infringement of a Google patent related to search notifications, and seeking monetary damages and an injunction preventing sales of any infringing Sonos products. In September 2020, Google filed a lawsuit against Sonos Europe B.V. in the Netherlands, alleging infringement of a Google patent related to digital rights management, and seeking monetary damages and enforcement of an injunction preventing sales of any infringing Sonos products, which was transferred to the Midden-Netherlands court on March 22, 2021, following the grant of the Company's challenge to improper jurisdiction. The Netherlands court has now heard argument in both pending Google cases and decisions are expected no earlier than December 2021. A range of loss, if any, associated with these matters is not probable or reasonably estimable as of October 2, 2021. On March 10, 2017, Implicit, LLC (“Implicit”) filed a patent infringement action in the United States District Court, District of Delaware against the Company. Implicit is asserting that the Company infringed on two patents in this case. The Company denies the allegations. There is no assurance of a favorable outcome and the Company’s business could be adversely affected as a result of a finding that the Company patents-in-suit are invalid and/or unenforceable. A range of loss, if any, associated with this matter is not probable or reasonably estimable as of October 2, 2021. The Company is involved in certain other litigation matters not listed above but does not consider these matters to be material either individually or in the aggregate at this time. The Company’s view of the matters not listed may change in the future as the litigation and events related thereto unfold. On May 13, 2020, the Company was granted a temporary exclusion from the August 2019 Section 301 Tariff Action (List 4A) ("Section 301 tariffs") for its component products. On July 23, 2020, the Company was granted a temporary exclusion from Section 301 tariffs for its core speaker products. These exclusions eliminated the tariffs on the Company's component and core speaker products imported from China until August 31, 2020, and entitled the Company to a refund for the tariffs paid since September 2019, the date the Section 301 tariffs were imposed. On August 28, 2020, the United States Trade Representative granted an extension through December 31, 2020, of the exclusion for the Company’s core products, with the Section 301 tariffs for our core products automatically reinstating on January 1, 2021. The exclusion for the Company’s component products was not extended past August 31, 2020, with the Section 301 tariffs for our component products automatically reinstating on September 1, 2020. Tariff refund claims are subject to review and approval by U.S. Customs and Border Protection. As of October 2, 2021, the Company recognized $18.3 million in refunds based upon acceptance of the Company's refund request, recognized as a reduction to cost of revenue, and the outstanding refund receivable was approximately $0.8 million which is recorded in other current assets on the consolidated balance sheets. As of October 2, 2021, the remaining outstanding tariff refund the Company expects to recover was approximately $15.4 million. The Company did not record these potential refunds due to uncertainty of the timing of acceptance of approval and will be recognized as a reduction to cost of revenue if and when acceptance occurs. Guarantees and Indemnifications In the normal course of business, the Company enters into agreements that contain a variety of representations and warranties and provide for general indemnification. The Company’s exposure under these agreements is unknown because it involves claims that may be made against the Company in the future, but have not yet been made. To date, the Company has not incurred material costs to defend lawsuits or settle claims related to these indemnification provisions. The Company has also entered into indemnification agreements with its directors and officers that may require the Company to indemnify its directors and officers against liabilities that may arise by reason of their status or service as directors or officers to the fullest extent permitted by the Delaware General Corporation Law. The Company also currently has directors’ and officers’ insurance. No amount has been accrued in the consolidated financial statements with respect to these indemnification guarantees.

Quarterly Financial Data (Unaud

Quarterly Financial Data (Unaudited)	12 Months Ended
	Oct. 02, 2021
Quarterly Financial Information Disclosure [Abstract]
Quarterly Financial Data (Unaudited)	Quarterly Financial Data (Unaudited) The following table summarizes the Company’s unaudited quarterly financial information for each of the four quarters of 2021 and 2020 (the sum of quarterly periods may not equal full-year amounts due to rounding): Three Months Ended October 2, July 3, April 3, January 2, (In thousands, except per share amounts) Revenue $ 359,539 $ 378,672 $ 332,949 $ 645,584 Gross profit 166,931 177,861 165,776 299,425 Net income (loss) (8,744) 17,826 17,221 132,292 Net income (loss) per share - basic $ (0.07) $ 0.14 $ 0.14 $ 1.14 Net income (loss) per share - diluted $ (0.07) $ 0.12 $ 0.12 $ 1.01 Three Months Ended October 3, June 27, March 28, December 28, (In thousands, except per share amounts) Revenue $ 339,837 $ 249,310 $ 175,098 $ 562,083 Gross profit 161,536 109,791 73,009 227,620 Net income (loss) 18,411 (56,980) (52,320) 70,775 Net income (loss) per share - basic $ 0.17 $ (0.52) $ (0.48) $ 0.65 Net income (loss) per share - diluted $ 0.15 $ (0.52) $ (0.48) $ 0.60 (1) The fourth quarter of fiscal 2020 reflects the impact of 14 weeks.

Restructuring Plan

Restructuring Plan	12 Months Ended
	Oct. 02, 2021
Restructuring and Related Activities [Abstract]
Restructuring Plan	Restructuring PlanOn June 23, 2020, the Company initiated a restructuring plan as part of its efforts to reduce operating expenses and preserve liquidity due to the uncertainty and challenges stemming from the COVID-19 pandemic (the "2020 restructuring plan"). As part of the 2020 restructuring plan, the Company eliminated approximately 12% of its global headcount and closed its New York retail store and six satellite offices in order to better align resources to provide further operating flexibility and more efficiently position the business for its long-term strategy. Activities under the 2020 restructuring plan were substantially completed in the first quarter of fiscal 2021. Total pre-tax restructuring and related costs under the 2020 restructuring plan were $26.4 million, which was incurred in fiscal 2020. For the assets deemed to be impaired as part of the 2020 restructuring, the Company estimated fair value using an income-approach based on management’s forecast of future cash flows expected to be derived from the property. The following table summarizes the costs incurred in connection with the 2020 restructuring plan: Fiscal Year Ended October 3, 2020 (In thousands) Employee related costs $ 8,985 Right-of-use asset impairment and abandonment charges 8,139 Property and equipment abandonment charges 5,824 Other restructuring costs 3,337 Total $ 26,285

Subsequent Events

Subsequent Events	12 Months Ended
	Oct. 02, 2021
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events In October 2021, the Company entered into a credit agreement with JPMorgan Chase Bank, N.A., Bank of America, N.A., Morgan Stanley Senior Funding, Inc., and Goldman Sachs Bank USA, which replaced its Credit Facility with JPMorgan Chase Bank, N.A. (see Note 7. Debt). The new agreement allows the Company to borrow up to $100 million, with a maturity date of October 2026. On October 8, 2021 and November 9, 2021, the Company completed two transactions to acquire two privately-held businesses for combined aggregate cash consideration of approximately $27.0 million. On November 17, the Company announced that its Board of Directors authorized a common stock repurchase program of up to $150.0 million.

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Oct. 02, 2021
Accounting Policies [Abstract]
Basis of Presentation and Preparation	Basis of Presentation and Preparation The consolidated financial statements, which include the accounts of Sonos, Inc. and its wholly owned subsidiaries, have been prepared in conformity with accounting principles generally accepted in the United States ("U.S. GAAP"). All intercompany accounts and transactions have been eliminated in consolidation. Certain prior period amounts have been reclassified to conform to the current period presentation. The Company operates on a 52-week or 53-week fiscal year ending on the Saturday nearest September 30 each year. The Company’s fiscal year is divided into four quarters of 13 weeks, each beginning on a Sunday and containing two 4-week periods followed by a 5-week period. An additional week is included in the fourth fiscal quarter approximately every five years to realign fiscal quarters with calendar quarters. This last occurred in the Company’s fiscal year ended October 3, 2020, and will reoccur in the fiscal year ending October 3, 2026. As used in the Annual Report on Form 10-K, “fiscal 2021” refers to the 52-week fiscal year ending October 2, 2021, “fiscal 2020” refers to the 53-week fiscal year ended October 3, 2020, and “fiscal 2019” refers to the 52-week fiscal year ended September 28, 2019.
Use of Estimates and Judgments	Use of Estimates and Judgments The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and judgments that affect the amounts reported and disclosed in the consolidated financial statements and accompanying notes. Actual results could differ materially from those estimates. For revenue recognition, examples of estimates and judgments include: determining the nature and timing of satisfaction of performance obligations, determining the standalone selling price ("SSP") of performance obligations and estimating variable consideration such as sales incentives and product returns. Additionally, estimates and judgments are made by management for allowances for credit losses, excess and obsolete inventory, useful lives associated with property and equipment, incremental borrowing rates associated with leases, the recording of and release of valuation allowances with respect to deferred tax assets and uncertain tax positions, impairment of long-lived assets, impairment of goodwill and indefinite-lived intangible assets, warranty, contingencies and valuation and assumptions underlying stock-based compensation and other equity instruments. On an ongoing basis, the Company evaluates its estimates and judgments compared to historical experience and trends that form the basis for making estimates and judgments about the carrying value of assets and liabilities. In March 2020, the outbreak of the novel coronavirus (COVID-19) was declared a pandemic. While the nature of the situation is dynamic, the Company has considered the impact when developing its estimates and assumptions noted above. Actual results and outcomes may differ from management's estimates and assumptions.
Comprehensive Income (Loss)	Comprehensive Income (Loss) Comprehensive income (loss) consists of two components: net income (loss) and other comprehensive income (loss). Other comprehensive income (loss) refers to net gains and losses that are recorded as an element of stockholders’ equity but are excluded from net income (loss). The Company’s other comprehensive income (loss) consists of net unrealized gains and losses on foreign currency translation adjustments from those subsidiaries not using the U.S. dollar as their functional currency.
Cash and Cash Equivalents	Cash and Cash Equivalents Cash equivalents consist of short-term, highly liquid financial instruments with insignificant interest rate risk that are readily convertible to cash and have maturities of three months or less from the date of purchase. As of October 2, 2021, and October 3, 2020, cash equivalents consisted of money market funds, which are recorded at fair value.
Restricted Cash	Restricted Cash The Company held no restricted cash as of October 2, 2021, and $0.2 million as of October 3, 2020, representing security deposits on real estate leases.
Accounts Receivable	Accounts Receivable Accounts receivable are recorded at the invoiced amount less allowances for credit losses and sales incentives, do not require collateral and do not bear interest.
Concentration of Credit Risk	Concentration of Credit Risk Financial instruments that potentially subject the Company to significant concentrations of credit risk consist principally of cash and cash equivalents and accounts receivable. The Company maintains cash and cash equivalents in several high-quality financial institutions. Cash and cash equivalents held at these banks, including those held in foreign branches of global banks, may exceed the amount of insurance provided on such deposits. These deposits may be redeemed upon demand, and management believes that the financial institutions that hold the Company’s cash and cash equivalents are financially sound and, accordingly, minimal credit risk exists with respect to cash. The Company has not experienced any losses in such accounts.
Inventories	Inventories Inventories primarily consist of finished goods and, to a lesser extent, component parts, which are purchased from contract manufacturers and component suppliers. Inventories are stated at lower of cost and net realizable value on a first-in, first-out basis. Inventory costs primarily consist of materials, inbound freight, import duties, tariffs, direct labor and manufacturing overhead, logistics, and other handling fees. The Company assesses the valuation of inventory balances including an assessment to determine potential excess and/or obsolete inventory. The Company may be required to write down the value of inventory if estimates of future demand and market conditions indicate excess and/or obsolete inventory. For the periods presented, the Company has not experienced significant write-downs. Ownership of inventory transfers to the Company at the time the goods are shipped from the suppliers. Inventories recorded on the Company's consolidated balance sheets include in transit inventory owned by the Company that have been shipped but have not yet been received at a Company distribution center.
Property and Equipment, Net	Property and Equipment, Net Property and equipment are stated at historical cost less accumulated depreciation. Depreciation is calculated using the straight-line method over the estimated useful lives of the related assets as follows: Computer hardware and software 1-3 years Furniture and fixtures 2-5 years Tooling and production line test equipment 2-4 years Leasehold improvements 2-10 years Product displays 1-3 years Costs incurred to improve leased office space are capitalized. Leasehold improvements are amortized on a straight-line basis over the shorter of the term of the lease or the estimated useful life of the improvement. Expenditures for major renewals and improvements that extend the useful lives of property and equipment are capitalized. Maintenance, repair costs and gains or losses associated with disposals are charged to expense as incurred. Product displays are deployed at retail locations. Because the product displays facilitate marketing of the Company’s products within the retail stores, depreciation for product displays is recorded in sales and marketing expenses in the consolidated statements of operations and comprehensive income (loss).
Cloud Computing Arrangements	Cloud Computing ArrangementsThe Company incurs costs to implement cloud computing arrangements that are hosted by a third-party vendor. Beginning in fiscal 2020, and continuing through fiscal 2021, the Company began activities to replace its legacy enterprise resource management system in order to accommodate the Company's expanding operations. Implementation costs incurred during the application development stage are capitalized until the software is ready for its intended use. The costs are then amortized on a straight-line basis over the term of the associated hosting arrangement and are recognized as an operating expense within the consolidated statements of operations and comprehensive income (loss). Capitalized costs were $14.3 million and $4.8 million as of October 2, 2021 and October 3, 2020, respectively, and are reported as a component of other assets on the Company's consolidated balance sheets.
Impairment of Goodwill and Indefinite-lived Intangible Assets	Impairment of Goodwill and Indefinite-lived Intangible Assets Goodwill and indefinite-lived intangible assets are not amortized and are tested for impairment on an annual basis or between annual tests if an event occurs or circumstances change that would more likely than not reduce the fair value of the reporting unit or asset below its carrying value. In connection with the Company's evaluation of goodwill impairment, the Company performs a qualitative assessment to determine if it is more likely than not that the fair value of a reporting unit is less than its carrying amount. If the qualitative assessment is not conclusive, the Company tests goodwill for impairment, including comparing the fair value of the reporting unit to its carrying value (including attributable goodwill). The Company determines fair value of its reporting unit using an income or market approach incorporating market participant considerations and management’s assumptions on revenue growth rates, operating margins, discount rates and expected capital expenditures. Fair value determinations may include both internal and third-party valuations. The Company performs its annual goodwill impairment assessment during the third quarter of each fiscal year and more frequently if circumstances otherwise dictate. In connection with the Company’s evaluation of indefinite-lived intangible asset impairment, the Company performs a qualitative assessment to determine if it is more likely than not that the fair value of the asset is less than its carrying amount. If the qualitative assessment is not conclusive, the Company proceeds to test for impairment by comparing the fair value of the asset to the carrying value. Fair value is determined based on estimated discounted future cash flow analyses that include significant management assumptions such as revenue growth rates, weighted-average costs of capital and assumed royalty rates. If the carrying value exceeds fair value, an impairment charge will be recorded to reduce the asset to fair value.
Impairment of Long-Lived Assets	Impairment of Long-Lived Assets The Company evaluates the recoverability of its long-lived assets, primarily comprised of property and equipment and operating lease right-of-use assets, for impairment whenever events or changes in circumstances indicate that the carrying amounts may not be recoverable. The Company performs impairment testing at the level that represents the lowest level for which identifiable cash flows are largely independent of the cash flows of other assets and liabilities. Recoverability is measured by comparing the carrying amounts to the expected future undiscounted cash flows attributable to the assets. If it is determined that an asset may not be recoverable, an impairment loss equal to the excess of the asset’s carrying value over its fair value is recorded. Fair value is determined based on estimated discounted future cash flows analyses. There were no impairment charges identified on the Company's long-lived assets for fiscal 2021 or fiscal 2019. For fiscal 2020, there were impairment charges incurred related to the 2020 restructuring plan as described within Note 14. Restructuring Plan.
Product Warranties	Product Warranties The Company’s products are covered by warranty to be free from defects in material and workmanship for a period of one year, except in the EU and select other countries where the Company provides a two-year warranty on all its products. At the time of sale, an estimate of future warranty costs is recorded as a component of cost of revenue and a warranty liability is recorded for estimated costs to satisfy the warranty obligation. The Company’s estimate of costs to fulfill its warranty obligations is based on historical experience and expectations of future costs to repair or replace.
Legal Contingencies	Legal Contingencies If a potential loss from any claim or legal proceeding is considered probable, and the amount can be reasonably estimated, the Company records a liability for an estimated loss. Legal fees are expensed as incurred and included in general and administrative expenses in the consolidated statements of operations and comprehensive income (loss). See Note 12. Commitments and Contingencies for additional information regarding legal contingencies.
Treasury Stock	Treasury Stock The Company accounts for treasury stock acquisitions using the cost method. The Company accounts for the retirement of treasury stock by deducting its par value from common stock and reflecting any excess of cost over par value as a deduction from additional paid-in capital on the consolidated balance sheets.
Fair Value Accounting	Fair Value Accounting Assets and liabilities recorded at fair value on the consolidated balance sheets are categorized based upon the level of judgment associated with the inputs used to measure their fair value. Fair value is estimated by applying the following hierarchy, which prioritizes the inputs used to measure fair value into three levels and bases the categorization within the hierarchy upon the lowest level of input that is available and significant to the fair value measurement: Level Input Input Definition Level 1 Quoted prices for identical assets or liabilities in active markets at the measurement date. Level 2 Inputs, other than quoted prices included in Level 1, such as quoted prices for similar assets or liabilities, in active markets or other inputs that are observable or can be corroborated with market data at the measurement date. Level 3 Unobservable inputs that reflect management's best estimate of what market participants would use in pricing the asset or liability at the measurement date.
Foreign Currency	Foreign Currency Certain of the Company’s wholly owned subsidiaries have non-U.S. dollar functional currencies. The Company translates assets and liabilities of non-U.S. dollar functional currency subsidiaries into U.S. dollars using exchange rates in effect at the end of each period and stockholders’ equity at historical rates. Revenue and expenses for these subsidiaries are translated using rates that approximate those in effect during the period. Gains and losses from translation are recognized in foreign currency translation included in accumulated other comprehensive loss. The Company remeasures monetary assets or liabilities denominated in currencies other than the functional currency using exchange rates prevailing on the balance sheet date, and non-monetary assets and liabilities at historical rates. Foreign currency remeasurement and transaction gains and losses are included in other income (expense), net.
Revenue Recognition	Revenue Recognition Revenue is recognized upon transfer of control of promised products or services to customers in an amount that reflects the consideration the Company expects to receive in exchange for those products or services. The Company's contracts generally include a combination of products and services. Revenue is allocated to distinct performance obligations and is recognized net of allowances for returns, discounts, sales incentives and any taxes collected from customers, which are subsequently remitted to governmental authorities. Shipping and handling costs associated with outbound freight after control over a product has transferred to a customer are not considered a separate performance obligation and are accounted for as a fulfillment cost and are included in cost of revenue. As of October 2, 2021, and October 3, 2020, the Company did not have any material assets related to incremental costs to obtain or fulfill customer contracts. In fiscal 2018, the Company adopted ASC 606 using the full retrospective transition method which resulted in an acceleration of revenue and related costs of revenue and most significantly, a reduction in deferred costs and revenue and deferred revenue at each balance sheet date. Nature of Products and Services Product revenue primarily includes sales of Sonos speakers and Sonos system products, which include software that enables the Company’s products to operate over a customer’s wireless network, as well as connect to various third-party services, including music and voice. The Company also generates a small portion of revenue from Partner products and other revenue sources in connection with partnerships, accessories, professional services, licensing, advertising, and subscription revenue. Revenue for module units is related to hardware and embedded software that is integrated into final products that are manufactured and sold by the Company's partners. Software primarily consists of firmware embedded in the products and the Sonos app, which is software that can be downloaded to consumer devices at no charge, with or without the purchase of one of the Company’s products. Products and related software are accounted for as a single performance obligation and all intended functionality is available to the customer upon purchase. The revenue allocated to the products and related software is the substantial portion of the total sale price. Product revenue is recognized at the point in time when control is transferred, which is either upon shipment or upon delivery to the customer, depending on delivery terms. Service revenue includes revenue allocated to (i) unspecified software upgrades and (ii) cloud-based services that enable products to access third-party music and voice assistant platforms, based on relative standalone selling price, which are each distinct performance obligations and are provided to customers at no additional charge. Unspecified software upgrades are provided on a when-and-if-available basis and have historically included updates and enhancements such as bug fixes, feature enhancements and updates to the ability to connect to third-party music or voice assistant platforms. Service revenue is recognized ratably over the estimated service period. Significant Judgments The Company’s contracts with customers generally contain promises to transfer products and services as described above. Determining whether products and services are considered distinct performance obligations that should be accounted for separately requires significant judgment. Determining the SSP for each distinct performance obligation requires judgment. The Company estimates SSP for items that are not sold separately, which include the products and related software, unspecified software upgrades and cloud-based services, using information that may include competitive pricing information, where available, as well as analyses of the cost of providing the products or services plus a reasonable margin. In developing SSP estimates, the Company also considers the nature of the products and services and the expected level of future services. Determining the revenue recognition period for unspecified software upgrades and cloud-based services also requires judgment. The Company recognizes revenue attributable to these performance obligations ratably over the best estimate of the period that the customer is expected to receive the services. In developing the estimated period of providing future services, the Company considers past history, plans to continue to provide services, including plans to continue to support updates and enhancements to prior versions of the Company’s products, expected technological developments, obsolescence, competition and other factors. The estimated service period may change in the future in response to competition, technology developments and the Company’s business strategy. The Company offers sales incentives through various programs consisting primarily of discounts, cooperative advertising and market development fund programs. The Company records cooperative advertising and market development fund programs with customers as a reduction to revenue unless it receives a distinct benefit in exchange for credits claimed by the customer and can reasonably estimate the fair value of the benefit received, in which case the Company records it as an expense. The Company recognizes a liability or a reduction to accounts receivable, and reduces revenue based on the estimated amount of sales incentives that will be claimed by customers. Estimates for sales incentives are developed using the most likely amount and are included in the transaction price to the extent that a significant reversal of revenue would not result once the uncertainty is resolved. In developing its estimate, the Company also considers the susceptibility of the incentive to outside influences, the length of time until the uncertainty is resolved and the Company’s experience with similar contracts. Reductions in revenue related to discounts are allocated to products and services on a relative basis based on their respective SSP. Judgment is required to determine the timing and amount of recognition of marketing funds which the Company estimates based on past practice of providing similar funds. The Company accepts returns from direct customers and from certain resellers. To establish an estimate for returns, the Company uses the expected value method by considering a portfolio of contracts with similar characteristics to calculate the historical returns rate. When determining the expected value of returns, the Company considers future business initiatives and relevant anticipated future events. Supplier Concentration The Company relies on third parties for the supply and manufacture of its products, as well as third-party logistics providers. In instances where these parties fail to perform their obligations, the Company may be unable to find alternative suppliers or satisfactorily deliver its products to customers on time, if at all. During fiscal 2021, 2020 and 2019, approximately 59%, 65% and 83%, respectively, of the Company’s finished goods purchased during each year were from one vendor. Deferred Revenue and Payment Terms The Company invoices each order upon hardware shipment or delivery and recognizes revenue for each distinct performance obligation when transfer of control has occurred, which in the case of services, may extend over several reporting periods. Amounts invoiced in advance of revenue recognition are recorded as deferred revenue on the consolidated balance sheets. Deferred revenue primarily relates to revenue allocated to unspecified software upgrades and platform services, as well as for newly launched products sold to resellers not recognized until the date of general availability is reached. General availability deferrals are classified as current deferred revenue as the Company starts shipping the product to the reseller within one month prior to the general availability date. The Company classifies deferred revenue as noncurrent if amounts are expected to be recognized as revenue beyond one year from the balance sheet date. Payment Terms Payment terms and conditions vary among the Company’s distribution channels although terms generally include a requirement of payment within 30 days of product shipment. Sales directly to customers from the Company’s website are paid at the time of product shipment. Prior to providing payment terms to customers, an evaluation of the customer’s credit risk is performed. Contractual allowances are an offset to accounts receivable.
Research and Development	Research and Development Research and development expenses consist primarily of personnel-related expenses, consulting and outside professional service costs, tooling and prototype materials and overhead costs. Substantially all of the Company’s research and development expenses are related to developing new products and services and improving existing products and services. To date, software development costs have been expensed as incurred because the period between achieving technological feasibility and the release of the software has been short and development costs qualifying for capitalization have been insignificant. In-process research and development ("IPRD") assets represent the fair value of incomplete research and development projects obtained as part of a business combination that have not yet reached technological feasibility and are initially not subject to amortization; rather, these assets are subject to impairment considerations of indefinite-lived intangible assets. Upon completion of development, IPRD assets are considered definite-lived intangible assets, transferred to developed
Advertising Costs	Advertising Costs
Restructuring and Related Costs	Restructuring and Related CostsCosts associated with a restructuring plan generally consist of involuntary employee termination benefits, contract termination costs, and other exit-related costs including costs to close facilities. The Company records a liability for involuntary employee termination benefits when management has committed to a plan that establishes the terms of the arrangement and that plan has been communicated to employees. Costs to terminate a contract before the end of the term are recognized on the termination date, and costs that will continue to be incurred in a contract for the remaining term without economic benefit are recognized as of the cease-use date. Restructuring and related costs may also include the write-down of related assets, including operating lease right-of-use assets, when the sale or abandonment of the asset is a direct result of the plan. Other exit-related costs are recognized as incurred. Restructuring and related costs are recognized as an operating expense within the consolidated statements of operations and comprehensive income (loss) and are classified based on the Company's classification policy for each category of operating expense.
Stock-Based Compensation	Stock-Based Compensation The Company measures stock-based compensation cost at fair value on the date of grant. Compensation cost for stock options is recognized, on a straight-line basis, as an expense over the period of vesting as the employee performs the related services, net of estimated forfeitures. The Company estimates the fair value of stock option awards using the Black-Scholes option-pricing model. The Company estimates forfeitures based on expected future terminations and will revise rates, as necessary, in subsequent periods if actual forfeitures differ from initial estimates. The fair value of RSUs is based on the Company's closing stock price on the trading day immediately preceding the date of grant.
Retirement Plans	Retirement PlansThe Company has a defined contribution 401(k) plan (the "401(k) Plan") for the Company’s U.S.-based employees, as well as various defined contribution plans for its international employees. Eligible U.S. employees may make tax-deferred contributions under the 401(k) plan, but are limited to the maximum annual dollar amount allowable under the Internal Revenue Code of 1986, as amended (the "Code"). The Company matches contributions towards the 401(k) Plan and international defined contribution plans.
Income Taxes	Income Taxes The Company accounts for income taxes under the asset and liability method, which requires the recognition of deferred tax assets and liabilities for the expected future tax consequences of events that have been included in the consolidated financial statements. Under this method, deferred tax assets and liabilities are determined based on the differences between the consolidated financial statements and tax basis of assets and liabilities using enacted tax rates in effect for the year in which the differences are expected to reverse. The effect of a change in tax rates on deferred tax assets and liabilities is recognized in income during the period that includes the enactment date. The Company records a valuation allowance when necessary to reduce its deferred tax assets to amounts that are more likely than not to be realized. In making such a determination, all available positive and negative evidence is considered, including future reversals of existing taxable temporary differences, projected future taxable income, tax-planning strategies, and results of recent operations. If the Company determines that it would be able to realize its deferred tax assets in the future in excess of their net recorded amount, the Company would make an adjustment to the deferred tax asset valuation allowance, which would result in a benefit to income taxes. The Company records uncertain tax positions in accordance with a two-step process whereby (i) the Company determines whether it is more likely than not that the tax positions will be sustained on the basis of the technical merits of the position and (ii) for those tax positions that meet the more likely than not recognition threshold, the Company recognizes the largest amount of tax benefit that is more than 50% likely to be realized upon ultimate settlement with the related tax authority. The Company includes interest and penalties related to unrecognized tax benefits within the provision for income taxes in the consolidated statements of operations and comprehensive income (loss). The Company has not incurred any interest or penalties related to unrecognized tax benefits in any of the periods presented. The Company’s provision for (benefit from) income taxes, deferred tax assets and liabilities and liabilities for unrecognized tax benefits involves the use of estimates, assumptions and judgments. Although the Company believes its estimates, assumptions and judgments to be reasonable, any changes in tax law or its interpretation of tax laws and the resolutions of potential tax audits could significantly impact the amounts provided for income taxes in the Company’s consolidated financial statements. Actual future operating results and the underlying amount and type of income could differ materially from the Company’s estimates, assumptions and judgments thereby impacting the Company’s financial position and results of operations.
Segment Information	Segment Information The Company operates as one operating segment as it only reports aggregate financial information on a consolidated basis, accompanied by disaggregated information about revenue by geographic region and product category to its Chief Executive Officer, who is the Company’s chief operating decision maker.
Leases	Leases The substantial majority of the Company’s leases are for its office spaces and facilities, which are accounted for as operating leases. The Company determines whether an arrangement is a lease at inception if there is an identified asset, and if it has the right to control the identified asset for a period of time. Some of the Company’s leases include options to extend the leases for up to 5 years, and some include options to terminate the leases within 1 year. The Company's lease terms are only for periods in which it has enforceable rights and are impacted by options to extend or terminate the lease only when it is reasonably certain that the Company will exercise the option. For leases with terms greater than 12 months, the Company records the related right-of-use asset and lease obligation at the present value of lease payments over the lease terms. Leases with an initial term of 12 months or less are not recorded on the balance sheet. Lease expense is recognized on a straight-line basis over the lease term. Lease agreements will typically exist with lease and non-lease components, which are accounted for separately. The Company's agreements may contain variable lease payments. The Company includes variable lease payments that depend on an index or a rate and exclude those which depend on facts or circumstances occurring after the commencement date, other than the passage of time. As most of the Company’s leases do not contain an implicit interest rate, the Company uses judgment to determine an incremental borrowing rate to use at lease commencement.
Recently Adopted Accounting Pronouncements and Recent Accounting Pronouncements Pending Adoption	Recently Adopted Accounting Pronouncements In June 2016, the Financial Accounting Standard Board ("FASB") issued ASU No. 2016-13, Financial Instruments - Credit Losses: Measurement of Credit Losses on Financial Instruments, and it subsequently issued amendments to the initial guidance (collectively referred to as "Topic 326"), which provide a new impairment model that requires measurement and recognition of expected credit losses for most financial assets and certain other instruments, including accounts receivable. The Company adopted this standard effective October 4, 2020, using a modified retrospective approach. Under the new standard, the allowance for credit losses is based on the Company's assessment of collectability of accounts, including consideration of the age of invoices, each customer's expected ability to pay and collection history, customer-specific information and current economic conditions that may impact a customer's ability to pay. The adoption of this standard did not have a material impact on the Company's consolidated financial statements. In November 2018, the FASB issued ASU No. 2018-18, Collaborative Arrangements (Topic 808): Clarifying the Interaction between Topic 808 and Topic 606. This standard resolves the diversity in practice concerning whether certain transactions between collaborative arrangement participants should be accounted for as revenue under Accounting Standards Codification 606, Revenue from Contracts with Customers ("Topic 606"). This standard specifies when a participant is a customer in a collaboration, adds guidance for unit of account to align with Topic 606 and provides presentation guidance for collaborative arrangements. The Company adopted this standard in the first quarter of fiscal 2021. The adoption did not have a material impact on the Company's consolidated financial statements. Recent Accounting Pronouncements Pending Adoption In December 2019, the FASB issued ASU No. 2019-12, Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes. This standard simplifies the accounting for income taxes by removing certain exceptions to the general principles in Accounting Standards Codification Topic 740 ("ASC 740") as well as by improving consistent application of the topic by clarifying and amending existing guidance. This standard is effective for the Company in the first quarter of fiscal 2022, with early adoption permitted. The Company will adopt this standard in the first quarter of fiscal 2022 and does not expect it to have a material impact on the Company's consolidated financial statements or disclosures.

Summary of Significant Accoun_3

Summary of Significant Accounting Policies (Tables)	12 Months Ended
	Oct. 02, 2021
Accounting Policies [Abstract]
Schedules of Concentration of Credit Risk	As of October 2, 2021, and October 3, 2020, the Company’s customers that accounted for 10% or more of total accounts receivable, net, were as follows: Accounts Receivable, net October 2, October 3, Customer A 19 % 39 % Customer B 10 % * * Accounts receivable was less than 10%. The Company’s customers that accounted for 10% or more of total revenue were as follows: Revenue Year Ended October 2, October 3, September 28, Customer A 14 % 12 % 16 % Customer C * * 10 % * Revenue was less than 10%.
Schedule of Property and Equipment	Depreciation is calculated using the straight-line method over the estimated useful lives of the related assets as follows: Computer hardware and software 1-3 years Furniture and fixtures 2-5 years Tooling and production line test equipment 2-4 years Leasehold improvements 2-10 years Product displays 1-3 years Property and equipment, net by country as of October 2, 2021, and October 3, 2020 were as follows: October 2, October 3, (In thousands) United States $ 40,669 $ 35,372 China 23,460 17,624 Other countries 7,212 7,788 Property and equipment, net $ 71,341 $ 60,784 Property and equipment, net consist of the following: October 2, October 3, (In thousands) Computer hardware and software $ 40,098 $ 45,798 Furniture and fixtures 7,483 8,239 Tooling and production line test equipment 76,210 67,495 Leasehold improvements 49,846 51,102 Product displays 57,863 48,925 Total property and equipment 231,500 221,559 Accumulated depreciation and amortization (160,159) (160,775) Property and equipment, net $ 71,341 $ 60,784
Schedule of Intercompany Foreign Currency Balances	Foreign currency remeasurement and transaction gains (losses) are recorded in other income (expense), net as follows: October 2, October 3, September 28, (In thousands) Foreign currency remeasurement and transaction gains (losses) $ 2,353 $ 6,594 $ (8,622)

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	12 Months Ended
	Oct. 02, 2021
Fair Value Disclosures [Abstract]
Summary of Fair Value, Assets Measured on Recurring Basis	The following table summarizes fair value measurements by level for the assets measured at fair value on a recurring basis as of October 2, 2021, and October 3, 2020: October 2, 2021 Level 1 Level 2 Level 3 Total (In thousands) Assets: Money market funds (cash equivalents) $ 484,482 $ — $ — $ 484,482 October 3, 2020 Level 1 Level 2 Level 3 Total (In thousands) Assets: Money market funds (cash equivalents) $ 281,380 $ — $ — $ 281,380

Revenue and Geographic Inform_2

Revenue and Geographic Information (Tables)	12 Months Ended
	Oct. 02, 2021
Revenue from Contract with Customer [Abstract]
Disaggregation of Revenue	Disaggregation of Revenue Revenue by geographical region also includes the applicable service revenue for software upgrades and cloud-based services attributable to each region and is based on ship-to address, is as follows: October 2, October 3, September 28, (In thousands) Americas $ 980,931 $ 755,874 $ 678,224 Europe, Middle East and Africa ("EMEA") 618,476 470,883 484,785 Asia Pacific ("APAC") 117,337 99,571 97,814 Total revenue $ 1,716,744 $ 1,326,328 $ 1,260,823 Revenue is attributed to individual countries based on ship-to address and also includes the applicable service revenue for software upgrades and cloud-based services attributable to each country. Revenue by significant countries is as follows: October 2, October 3, September 28, (In thousands) United States $ 890,837 $ 697,410 $ 630,012 Other countries 825,907 628,918 630,811 Total revenue $ 1,716,744 $ 1,326,328 $ 1,260,823 Revenue by product category also includes the applicable service revenue for software upgrades and cloud-based services attributable to each product category. Revenue by major product category is as follows: October 2, October 3, September 28, (In thousands) Sonos speakers $ 1,378,808 $ 1,034,813 $ 1,008,422 Sonos system products 265,180 218,788 187,172 Partner products and other revenue 72,756 72,727 65,229 Total revenue $ 1,716,744 $ 1,326,328 $ 1,260,823
Schedule of Property and Equipment, Net by Country	Depreciation is calculated using the straight-line method over the estimated useful lives of the related assets as follows: Computer hardware and software 1-3 years Furniture and fixtures 2-5 years Tooling and production line test equipment 2-4 years Leasehold improvements 2-10 years Product displays 1-3 years Property and equipment, net by country as of October 2, 2021, and October 3, 2020 were as follows: October 2, October 3, (In thousands) United States $ 40,669 $ 35,372 China 23,460 17,624 Other countries 7,212 7,788 Property and equipment, net $ 71,341 $ 60,784 Property and equipment, net consist of the following: October 2, October 3, (In thousands) Computer hardware and software $ 40,098 $ 45,798 Furniture and fixtures 7,483 8,239 Tooling and production line test equipment 76,210 67,495 Leasehold improvements 49,846 51,102 Product displays 57,863 48,925 Total property and equipment 231,500 221,559 Accumulated depreciation and amortization (160,159) (160,775) Property and equipment, net $ 71,341 $ 60,784

Balance Sheet Components (Table

Balance Sheet Components (Tables)	12 Months Ended
	Oct. 02, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Summary of Changes in Allowance for Credit Losses	The following table summarizes changes in the allowance for credit losses for fiscal 2021, and the allowance for doubtful accounts for fiscal 2020 and 2019: October 2, October 3, September 28, (In thousands) Beginning balance $ 1,307 $ 1,255 $ 872 Increases 1,529 1,127 1,034 Write-offs (1,289) (1,075) (651) Ending balance $ 1,547 $ 1,307 $ 1,255
Summary of Changes In Allowance for Sales Incentives	The following table summarizes the changes in the allowance for sales incentives for fiscal 2021, 2020 and 2019: October 2, October 3, September 28, (In thousands) Beginning balance $ 17,515 $ 20,051 $ 11,754 Charged to revenue 95,249 108,843 87,703 Utilization of sales incentive allowance (93,604) (111,379) (79,406) Ending balance $ 19,160 $ 17,515 $ 20,051
Schedule of Inventories, Net	Inventories, net, consist of the following: October 2, October 3, (In thousands) Finished goods $ 154,608 $ 172,184 Components 30,522 8,646 Inventories $ 185,130 $ 180,830
Schedule of Property and Equipment	Depreciation is calculated using the straight-line method over the estimated useful lives of the related assets as follows: Computer hardware and software 1-3 years Furniture and fixtures 2-5 years Tooling and production line test equipment 2-4 years Leasehold improvements 2-10 years Product displays 1-3 years Property and equipment, net by country as of October 2, 2021, and October 3, 2020 were as follows: October 2, October 3, (In thousands) United States $ 40,669 $ 35,372 China 23,460 17,624 Other countries 7,212 7,788 Property and equipment, net $ 71,341 $ 60,784 Property and equipment, net consist of the following: October 2, October 3, (In thousands) Computer hardware and software $ 40,098 $ 45,798 Furniture and fixtures 7,483 8,239 Tooling and production line test equipment 76,210 67,495 Leasehold improvements 49,846 51,102 Product displays 57,863 48,925 Total property and equipment 231,500 221,559 Accumulated depreciation and amortization (160,159) (160,775) Property and equipment, net $ 71,341 $ 60,784
Schedule of Intangible Assets	The following table reflects the changes in the net carrying amount of the components of intangible assets associated with the Company's acquisition activity: October 2, 2021 Gross Carrying Amount Accumulated Amortization Net Carrying Value Weighted-Average Remaining Life (In thousands, except weighted-average remaining life) Technology $ 7,752 $ (3,405) $ 4,347 2.67 Other 39 (36) 3 0.17 Total finite-lived intangible assets 7,791 (3,441) 4,350 2.67 In-process research and development and other intangible assets not subject to amortization 20,100 — 20,100 Total intangible assets $ 27,891 $ (3,441) $ 24,450
Summary of Estimated Future Amortization Expense	The following table summarizes the estimated future amortization expense of the Company's intangible assets as October 2, 2021: Fiscal years ending Future Amortization Expense (In thousands) 2022 $ 1,917 2023 1,243 2024 1,020 2025 170 2026 and thereafter — Total future amortization expense $ 4,350
Schedule of Accrued Expenses	Accrued expenses consisted of the following: October 2, October 3, (In thousands) Accrued advertising and marketing $ 19,989 $ 10,609 Accrued taxes 16,941 6,252 Accrued inventory 37,117 2,843 Accrued manufacturing, logistics and product development 14,943 9,753 Accrued general and administrative 13,066 10,068 Accrued restructuring 114 1,062 Other accrued payables 5,859 4,462 Total accrued expenses $ 108,029 $ 45,049
Summary of Changes in Deferred Revenue	The following table presents the changes in the Company's deferred revenue balances for the fiscal years ended October 2, 2021, October 3, 2020, and September 28, 2019: October 2, October 3, September 28, (In thousands) Deferred revenue, beginning of period $ 62,389 $ 56,449 $ 50,967 Recognition of revenue included in beginning of period deferred revenue (19,175) (13,052) (11,934) Revenue deferred, net of revenue recognized on contracts 46,284 18,992 17,416 Deferred revenue, end of period $ 89,498 $ 62,389 $ 56,449
Schedule of Expected Recognition of Deferred Revenue	The Company expects the following recognition of deferred revenue as of October 2, 2021: For the fiscal years ending 2022 2023 2024 2025 2026 and Beyond Total (In thousands) Revenue expected to be recognized $ 35,866 $ 14,867 $ 12,805 $ 10,476 $ 15,484 $ 89,498
Schedule of Other Current Liabilities	Other current liabilities consist of the following: October 2, October 3, (In thousands) Reserve for returns $ 19,266 $ 14,195 Short-term operating lease liabilities 10,724 10,910 Product warranty liability 5,604 3,628 Other 3,950 2,417 Total other current liabilities $ 39,544 $ 31,150
Schedule of Warranty Liability	The following table presents the changes in the Company’s warranty liability for the fiscal years ended October 2, 2021, and October 3, 2020: October 2, October 3, (In thousands) Warranty liability, beginning of period $ 3,628 $ 3,254 Provision for warranties issued during the period 15,304 12,711 Settlements of warranty claims during the period (13,328) (12,337) Warranty liability, end of period $ 5,604 $ 3,628

Leases (Tables)

Leases (Tables)	12 Months Ended
	Oct. 02, 2021
Leases [Abstract]
Components of Lease Expense	The components of lease expense for the fiscal year ended October 2, 2021, was as follows: Year Ended October 2, (In thousands) Operating lease cost $ 11,376 Short-term lease cost 392 Variable lease cost 3,836 Total lease cost $ 15,604
Maturity of Lease Liabilities	The following table summarizes the maturity of lease liabilities under operating leases as of October 2, 2021: Fiscal years ending Operating leases (In thousands) 2022 $ 13,407 2023 13,263 2024 12,168 2025 9,048 2026 1,672 Thereafter 134 Total lease payments 49,692 Less imputed interest (5,008) Total lease liabilities (1) $ 44,684

Debt (Tables)

Debt (Tables)	12 Months Ended
	Oct. 02, 2021
Debt Disclosure [Abstract]
Schedule of Debt	As of October 2, 2021, the Company did not have any remaining short- or long-term debt obligations, and as of October 3, 2020, the Company’s short- and long-term debt obligations were as follows: October 3, 2020 Rate Balance (In thousands) Term Loan (1) 2.4 % $ 25,000 Unamortized debt issuance costs (2) (82) Total indebtedness 24,918 Less short term portion (6,667) Long-term debt $ 18,251 (1) Original maturity date of October 28, 2021, and bore interest at a variable rate equal to an adjusted LIBOR plus 2.25%, payable quarterly. (2) Debt issuance costs were recorded as a debt discount and charged to interest expense over the term of the agreement.

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	12 Months Ended
	Oct. 02, 2021
Share-based Payment Arrangement [Abstract]
Schedule of Stock Option Activity	The summary of the Company’s stock option activity is as follows: Number of Weighted-Average Exercise Price Weighted-Average Remaining Contractual Term Aggregate Intrinsic Value (In years) (In thousands) Outstanding at October 3, 2020 28,422,940 $ 12.03 5.6 $ 99,053 Exercised (13,397,782) $ 11.04 Forfeited (479,919) $ 14.44 Outstanding at October 2, 2021 14,545,239 $ 12.86 5.1 $ 282,141 At October 2, 2021 Options exercisable 12,723,601 $ 12.62 4.9 $ 249,899 Options vested and expected to vest 14,404,584 $ 12.85 5.1 $ 279,604
Schedule of Restricted Stock Unit Activity	The summary of the Company’s unvested RSU activity is as follows: Number of Weighted-Average Grant Date Fair Value Aggregate Intrinsic Value (In thousands) Outstanding at October 3, 2020 11,647,951 $ 10.50 $ 180,543 Granted 2,860,688 $ 19.07 Released (4,146,278) $ 11.38 Forfeited (1,078,836) $ 11.45 Outstanding at October 2, 2021 9,283,525 $ 12.64 $ 299,487 At October 2, 2021 Units expected to vest 7,887,232 $ 12.54 $ 254,442
Summary of Performance Stock Units	The summary of the Company’s PSU activity is as follows: Number of Weighted-Average Grant Date Fair Value Aggregate Intrinsic Value (In thousands) Outstanding at October 3, 2020 — $ — $ — Granted 158,521 $ 22.81 Vested — Forfeited — Outstanding at October 2, 2021 158,521 $ 22.81 $ 5,114
Schedule of Stock-Based Compensation Expense	Total stock-based compensation expense by function category was as follows: October 2, October 3, September 28, (In thousands) Cost of revenue $ 988 $ 1,106 $ 985 Research and development 25,075 23,439 17,643 Sales and marketing 13,570 14,359 12,965 General and administrative 22,494 18,706 14,982 Total stock-based compensation expense $ 62,127 $ 57,610 $ 46,575

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Oct. 02, 2021
Income Tax Disclosure [Abstract]
Schedule of Income (Loss) Before Provision For (Benefit From) Income Taxes	The Company’s income (loss) before provision for (benefit from) income taxes for fiscal 2021, 2020 and 2019 were as follows: October 2, October 3, September 28, (In thousands) Domestic $ 126,810 $ (15,194) $ (858) Foreign 30,115 (4,889) (218) Income (loss) before provision for (benefit from) income taxes $ 156,925 $ (20,083) $ (1,076)
Schedule of Provision For (Benefit From) Income Taxes	Components of the provision for (benefit from) income taxes consisted of the following: October 2, October 3, September 28, (In thousands) Current: U.S. Federal $ — $ (1,388) $ 1,366 U.S. State 440 724 1,132 Foreign 6,216 1,220 1,463 Total current 6,656 556 3,961 Deferred: U.S. Federal — — — U.S. State — — — Foreign (8,326) (524) (271) Total deferred (8,326) (524) (271) Provision for (benefit from) income taxes $ (1,670) $ 32 $ 3,690
Schedule of Deferred Tax Assets and Liabilities	Components of the Company’s deferred income tax assets and liabilities are as follows: October 2, October 3, (In thousands) Deferred tax assets Accrued expenses and reserves $ 18,601 $ 12,014 Deferred revenue 13,915 11,831 U.S. net operating loss carryforwards 25,284 8,242 Foreign net operating loss carryforwards 13,240 12,183 Research & development tax credit carryforwards 77,607 53,543 Stock-based compensation 9,082 11,018 Operating lease liability 9,908 14,377 U.S. amortization 8,031 7,648 Depreciation 1,875 1,101 Other 428 603 Total deferred tax assets 177,971 132,560 Valuation allowance (155,978) (113,939) Deferred tax assets, net of valuation allowance 21,993 18,621 Deferred tax liabilities Tax accounting method change (962) (2,946) Right-of-use asset (7,388) (9,914) Foreign amortization (5,833) (6,093) Depreciation (32) (187) Other (144) (115) Total deferred tax liabilities (14,359) (19,255) Net deferred tax assets (liabilities) $ 7,634 $ (634) Reported as Deferred tax assets $ 10,028 $ 1,800 Deferred tax liabilities (2,394) (2,434) Net deferred tax assets (liabilities) $ 7,634 $ (634)
Summary of Changes in Valuation Allowance	The following table summarizes changes in the valuation allowance for fiscal 2021, 2020 and 2019: October 2, October 3, September 28, (In thousands) Beginning balance $ 113,939 $ 95,088 $ 72,380 Increase during the period 49,791 18,851 22,708 Decrease during the period (7,752) — — Ending balance $ 155,978 $ 113,939 $ 95,088
Schedule of Effective Income Tax Rate Reconciliation	Reconciliation of U.S. statutory federal income taxes to the Company’s provision for (benefit from) income taxes is as follows: October 2, October 3, September 28, (In thousands) U.S. federal income taxes at statutory rate $ 32,954 $ (4,217) $ (226) U.S. state and local income taxes, net of federal benefit and state credits (9,473) (2,798) (9,315) Foreign income tax rate differential 1,430 (75) 129 Stock-based compensation (47,496) 869 (2,399) Federal research and development tax credits (21,535) (8,012) (8,418) Unrecognized federal tax benefits 4,041 815 (2,806) Change in tax rate (2,681) — 1,161 Global intangible low taxed income, net of foreign tax credits — — 239 Base erosion and anti-abuse tax — (781) 781 Other (565) 598 822 Change in valuation allowance 41,655 13,633 23,722 Provision for income taxes $ (1,670) $ 32 $ 3,690
Schedule of Changes in Unrecognized Tax Benefits	Change in gross unrecognized tax benefits, excluding interest and penalties, as a result of uncertain tax positions are as follows: October 2, October 3, September 28, (In thousands) Beginning balance $ 14,721 $ 12,527 $ 17,794 Decrease - tax positions in prior periods (4) (768) (8,226) Increase - tax positions in current periods 6,535 2,962 2,959 Ending balance $ 21,252 $ 14,721 $ 12,527

Net Income (Loss) Per Share A_2

Net Income (Loss) Per Share Attributable to Common Stockholders (Tables)	12 Months Ended
	Oct. 02, 2021
Earnings Per Share [Abstract]
Schedule of Earnings Per Share, Basic and Diluted	The following table sets forth the computation of the Company’s basic and diluted net income (loss) per share attributable to common stockholders: October 2, October 3, September 28, (In thousands, except share and per share data) Numerator: Net income (loss) attributable to common stockholders - basic and diluted $ 158,595 $ (20,115) $ (4,766) Denominator: Weighted-average shares of common stock - basic 122,245,212 109,807,154 103,783,006 Effect of potentially dilutive stock options 10,120,238 — — Effect of RSUs 7,875,245 — — Effect of PSUs 68,457 — — Weighted-average shares of common stock—diluted 140,309,152 109,807,154 103,783,006 Net income (loss) per share attributable to common stockholders: Basic $ 1.30 $ (0.18) $ (0.05) Diluted $ 1.13 $ (0.18) $ (0.05)
Schedule of Potentially Dilutive Shares Excluded From Computation of Diluted Earnings Per Share	The following potentially dilutive shares as of the end of each period presented were excluded from the computation of diluted net income (loss) per share for the periods presented because including them would have been antidilutive: October 2, October 3, September 28, Stock options to purchase common stock 9,030,004 33,503,698 42,300,183 Restricted stock units 3,505,140 9,225,127 4,147,463 Performance stock units 55,586 — — Total 12,590,730 42,728,825 46,447,646

Commitments and Contingencies (

Commitments and Contingencies (Tables)	12 Months Ended
	Oct. 02, 2021
Commitments and Contingencies Disclosure [Abstract]
Schedule of Purchase Obligations	The following table summarizes future payments under the Company's unconditional purchase obligations as of October 2, 2021: Fiscal years ended Total 2022 2023 2024 2025 2026 Beyond (In thousands) Inventory-related purchase obligations $ 92,488 $ 92,488 $ — $ — $ — $ — $ — Other purchase obligations 57,112 32,447 20,898 3,767 — — — Total $ 149,600 $ 124,935 $ 20,898 $ 3,767 $ — $ — $ —

Quarterly Financial Data (Una_2

Quarterly Financial Data (Unaudited) (Tables)	12 Months Ended
	Oct. 02, 2021
Quarterly Financial Information Disclosure [Abstract]
Schedule of Unaudited Quarterly Financial Information	The following table summarizes the Company’s unaudited quarterly financial information for each of the four quarters of 2021 and 2020 (the sum of quarterly periods may not equal full-year amounts due to rounding): Three Months Ended October 2, July 3, April 3, January 2, (In thousands, except per share amounts) Revenue $ 359,539 $ 378,672 $ 332,949 $ 645,584 Gross profit 166,931 177,861 165,776 299,425 Net income (loss) (8,744) 17,826 17,221 132,292 Net income (loss) per share - basic $ (0.07) $ 0.14 $ 0.14 $ 1.14 Net income (loss) per share - diluted $ (0.07) $ 0.12 $ 0.12 $ 1.01 Three Months Ended October 3, June 27, March 28, December 28, (In thousands, except per share amounts) Revenue $ 339,837 $ 249,310 $ 175,098 $ 562,083 Gross profit 161,536 109,791 73,009 227,620 Net income (loss) 18,411 (56,980) (52,320) 70,775 Net income (loss) per share - basic $ 0.17 $ (0.52) $ (0.48) $ 0.65 Net income (loss) per share - diluted $ 0.15 $ (0.52) $ (0.48) $ 0.60 (1) The fourth quarter of fiscal 2020 reflects the impact of 14 weeks.

Restructuring and Related Activ

Restructuring and Related Activities (Tables)	12 Months Ended
	Oct. 02, 2021
Restructuring and Related Activities [Abstract]
Restructuring and Related Costs	The following table summarizes the costs incurred in connection with the 2020 restructuring plan: Fiscal Year Ended October 3, 2020 (In thousands) Employee related costs $ 8,985 Right-of-use asset impairment and abandonment charges 8,139 Property and equipment abandonment charges 5,824 Other restructuring costs 3,337 Total $ 26,285

Business Overview (Details)

Business Overview (Details)	Oct. 02, 2021country
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Number of countries where products distributed	50

Summary of Significant Accoun_4

Summary of Significant Accounting Policies - Textual (Details)	12 Months Ended
	Oct. 02, 2021USD ($)segment	Oct. 03, 2020USD ($)	Sep. 28, 2019USD ($)
Product Warranty Liability [Line Items]
Restricted cash	$ 0	$ 191,000
Capitalized costs	$ 14,300,000	4,800,000
Product warranty term	1 year
Contributions by employer	$ 7,600,000	6,200,000
Number of operating segments | segment	1
Term of option to extend	5 years
Termination option period	1 year
European Union
Product Warranty Liability [Line Items]
Product warranty term	2 years
Sales and marketing
Product Warranty Liability [Line Items]
Advertising costs	$ 62,300,000	$ 43,900,000	$ 48,800,000
One vendor | Supplier concentration risk | Inventories
Product Warranty Liability [Line Items]
Concentration percentage	59.00%	65.00%	83.00%

Summary of Significant Accoun_5

Summary of Significant Accounting Policies - Schedules of Concentration of Credit Risk (Details) - Customer Concentration Risk	12 Months Ended
	Oct. 02, 2021	Oct. 03, 2020	Sep. 28, 2019
Customer A | Accounts receivable
Product Information [Line Items]
Concentration percentage	19.00%	39.00%
Customer A | Revenue
Product Information [Line Items]
Concentration percentage	14.00%	12.00%	16.00%
Customer B | Accounts receivable
Product Information [Line Items]
Concentration percentage	10.00%
Customer C | Revenue
Product Information [Line Items]
Concentration percentage			10.00%

Summary of Significant Accoun_6

Summary of Significant Accounting Policies - Schedule of Property and Equipment (Details)	12 Months Ended
	Oct. 02, 2021
Computer hardware and software | Minimum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	1 year
Computer hardware and software | Maximum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	3 years
Furniture and fixtures | Minimum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	2 years
Furniture and fixtures | Maximum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	5 years
Tooling and production line test equipment | Minimum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	2 years
Tooling and production line test equipment | Maximum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	4 years
Leasehold improvements | Minimum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	2 years
Leasehold improvements | Maximum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	10 years
Product displays | Minimum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	1 year
Product displays | Maximum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	3 years

Summary of Significant Accoun_7

Summary of Significant Accounting Policies - Schedule of Intercompany Foreign Currency Balances (Details) - USD ($) $ in Thousands	12 Months Ended
	Oct. 02, 2021	Oct. 03, 2020	Sep. 28, 2019
Product Information [Line Items]
Foreign currency remeasurement and transaction gain (losses)	$ 1,108	$ 4,143	$ (4,035)
Other income (expense)
Product Information [Line Items]
Foreign currency remeasurement and transaction gain (losses)	$ 2,353	$ 6,594	$ (8,622)

Fair Value Measurements (Detail

Fair Value Measurements (Details) - Money market funds - Fair value, measurements, recurring - USD ($) $ in Thousands	Oct. 02, 2021	Oct. 03, 2020
Assets:
Money market funds (cash equivalents)	$ 484,482	$ 281,380
Level 1
Assets:
Money market funds (cash equivalents)	484,482	281,380
Level 2
Assets:
Money market funds (cash equivalents)	0	0
Level 3
Assets:
Money market funds (cash equivalents)	$ 0	$ 0

Revenue and Geographic Inform_3

Revenue and Geographic Information - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Oct. 02, 2021	Jul. 03, 2021	Apr. 03, 2021	Jan. 02, 2021	Oct. 03, 2020	Jun. 27, 2020	Mar. 28, 2020	Dec. 28, 2019	Oct. 02, 2021	Oct. 03, 2020	Sep. 28, 2019
Disaggregation of Revenue [Line Items]
Revenue	$ 359,539	$ 378,672	$ 332,949	$ 645,584	$ 339,837	$ 249,310	$ 175,098	$ 562,083	$ 1,716,744	$ 1,326,328	$ 1,260,823
Sonos speakers
Disaggregation of Revenue [Line Items]
Revenue									1,378,808	1,034,813	1,008,422
Sonos system products
Disaggregation of Revenue [Line Items]
Revenue									265,180	218,788	187,172
Partner products and other revenue
Disaggregation of Revenue [Line Items]
Revenue									72,756	72,727	65,229
Americas
Disaggregation of Revenue [Line Items]
Revenue									980,931	755,874	678,224
Europe, Middle East and Africa ("EMEA")
Disaggregation of Revenue [Line Items]
Revenue									618,476	470,883	484,785
Asia Pacific ("APAC")
Disaggregation of Revenue [Line Items]
Revenue									117,337	99,571	97,814
United States
Disaggregation of Revenue [Line Items]
Revenue									890,837	697,410	630,012
Other countries
Disaggregation of Revenue [Line Items]
Revenue									$ 825,907	$ 628,918	$ 630,811

Revenue and Geographic Inform_4

Revenue and Geographic Information - Disaggregation of Property and Equipment (Details) - USD ($) $ in Thousands	Oct. 02, 2021	Oct. 03, 2020
Property, Plant and Equipment [Line Items]
Property and equipment, net	$ 71,341	$ 60,784
United States
Property, Plant and Equipment [Line Items]
Property and equipment, net	40,669	35,372
China
Property, Plant and Equipment [Line Items]
Property and equipment, net	23,460	17,624
Other countries
Property, Plant and Equipment [Line Items]
Property and equipment, net	$ 7,212	$ 7,788

Balance Sheet Components - Summ

Balance Sheet Components - Summary of Changes in Allowance for Credit Losses (Details) - USD ($) $ in Thousands	12 Months Ended
	Oct. 02, 2021	Oct. 03, 2020	Sep. 28, 2019
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	$ 1,307	$ 1,255	$ 872
Increases	1,529	1,127	1,034
Write-offs	(1,289)	(1,075)	(651)
Ending balance	$ 1,547	$ 1,307	$ 1,255

Balance Sheet Components - Su_2

Balance Sheet Components - Summary of Changes In Allowance for Sales Incentives (Details) - USD ($) $ in Thousands	12 Months Ended
	Oct. 02, 2021	Oct. 03, 2020	Sep. 28, 2019
Allowance for Sales Incentives [Roll Forward]
Beginning balance	$ 17,515	$ 20,051	$ 11,754
Charged to revenue	95,249	108,843	87,703
Utilization of sales incentive allowance	(93,604)	(111,379)	(79,406)
Ending balance	$ 19,160	$ 17,515	$ 20,051

Balance Sheet Components - Sche

Balance Sheet Components - Schedule of Inventories, Net (Details) - USD ($) $ in Thousands	Oct. 02, 2021	Oct. 03, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Finished goods	$ 154,608	$ 172,184
Components	30,522	8,646
Inventories	$ 185,130	$ 180,830

Balance Sheet Components - Sc_2

Balance Sheet Components - Schedule of Property and Equipment (Details) - USD ($) $ in Thousands	12 Months Ended
	Oct. 02, 2021	Oct. 03, 2020	Sep. 28, 2019
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 231,500	$ 221,559
Accumulated depreciation and amortization	(160,159)	(160,775)
Property and equipment, net	71,341	60,784
Depreciation expense	31,800	34,900	$ 36,400
Fixed asset, disposal	32,900	18,500	10,200
Fixed asset disposal, accumulated depreciation	32,200	14,200	9,300
Loss on disposal of fixed assets	700	4,300	$ 800
Computer hardware and software
Property, Plant and Equipment [Line Items]
Property and equipment, gross	40,098	45,798
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property and equipment, gross	7,483	8,239
Tooling and production line test equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	76,210	67,495
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	49,846	51,102
Product displays
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 57,863	$ 48,925

Balance Sheet Components - Sc_3

Balance Sheet Components - Schedule of Intangible Assets and Summary of Estimated Future Amortization Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Oct. 02, 2021	Oct. 03, 2020
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross carrying amount	$ 7,791
Accumulated amortization	(3,441)
Finite-lived intangible assets, net carrying value	4,350
Intangible assets, gross carrying amount (excluding goodwill)	27,891
Intangible assets, net carrying value (excluding goodwill)	$ 24,450	$ 26,394
Weighted-average remaining life	2 years 8 months 1 day
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
2022	$ 1,917
2023	1,243
2024	1,020
2025	170
2026 and thereafter	0
Finite-lived intangible assets, net carrying value	4,350
In progress research and development
Finite-Lived Intangible Assets [Line Items]
Indefinite-lived intangible assets (excluding goodwill)	20,100
Technology
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross carrying amount	7,752
Accumulated amortization	(3,405)
Finite-lived intangible assets, net carrying value	$ 4,347
Weighted-average remaining life	2 years 8 months 1 day
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
Finite-lived intangible assets, net carrying value	$ 4,347
Other
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross carrying amount	39
Accumulated amortization	(36)
Finite-lived intangible assets, net carrying value	$ 3
Weighted-average remaining life	2 months 1 day
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
Finite-lived intangible assets, net carrying value	$ 3

Balance Sheet Components - Sc_4

Balance Sheet Components - Schedule of Accrued Expenses (Details) - USD ($) $ in Thousands	Oct. 02, 2021	Oct. 03, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Accrued advertising and marketing	$ 19,989	$ 10,609
Accrued taxes	16,941	6,252
Accrued inventory	37,117	2,843
Accrued manufacturing, logistics and product development	14,943	9,753
Accrued general and administrative	13,066	10,068
Accrued restructuring	114	1,062
Other accrued payables	5,859	4,462
Total accrued expenses	$ 108,029	$ 45,049

Balance Sheet Components - Su_3

Balance Sheet Components - Summary of Changes in Deferred Revenue (Details) - USD ($) $ in Thousands	12 Months Ended
	Oct. 02, 2021	Oct. 03, 2020	Sep. 28, 2019
Deferred Revenue Arrangement [Line Items]
Deferred revenue	$ 89,498	$ 62,389	$ 56,449
Contract with Customer, Liability [Roll Forward]
Deferred revenue, beginning of period	62,389	56,449	50,967
Recognition of revenue included in beginning of period deferred revenue	(19,175)	(13,052)	(11,934)
Revenue deferred, net of revenue recognized on contracts in the respective period	46,284	18,992	17,416
Deferred revenue, end of period	89,498	$ 62,389	$ 56,449
Software Upgrades and Cloud-Based Services
Deferred Revenue Arrangement [Line Items]
Deferred revenue	70,400
Contract with Customer, Liability [Roll Forward]
Deferred revenue, end of period	$ 70,400

Balance Sheet Components - Sc_5

Balance Sheet Components - Schedule of Expected Recognition of Deferred Revenue (Details) $ in Thousands	Oct. 02, 2021USD ($)
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Revenue expected to be recognized	$ 89,498
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-10-03
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Revenue expected to be recognized	$ 35,866
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-10-02
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Revenue expected to be recognized	$ 14,867
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, period	2 years
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-10-01
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Revenue expected to be recognized	$ 12,805
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, period	3 years
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-09-29
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Revenue expected to be recognized	$ 10,476
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, period	4 years
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-09-28
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Revenue expected to be recognized	$ 15,484
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, period

Balance Sheet Components - Sc_6

Balance Sheet Components - Schedule of Other Current Liabilities (Details) - USD ($) $ in Thousands	Oct. 02, 2021	Oct. 03, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Reserve for returns	$ 19,266	$ 14,195
Short-term operating lease liabilities	10,724	10,910
Product warranty liability	5,604	3,628
Other	3,950	2,417
Total other current liabilities	$ 39,544	$ 31,150
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	Total other current liabilities	Total other current liabilities

Balance Sheet Components - Sc_7

Balance Sheet Components - Schedule of Warranty Liability (Details) - USD ($) $ in Thousands	12 Months Ended
	Oct. 02, 2021	Oct. 03, 2020
Movement in Standard Product Warranty Accrual [Roll Forward]
Warranty liability, beginning of period	$ 3,628	$ 3,254
Provision for warranties issued during the period	15,304	12,711
Settlements of warranty claims during the period	(13,328)	(12,337)
Warranty liability, end of period	$ 5,604	$ 3,628

Leases - Additional Information

Leases - Additional Information (Details) - USD ($) $ in Millions	12 Months Ended
	Oct. 02, 2021	Oct. 03, 2020
Lessee, Lease, Description [Line Items]
Term of option to extend	5 years
Termination option period	1 year
Weighted-average discount rate - operating leases	4.07%
Weighted-average remaining lease term (years) - operating leases	3 years 9 months 18 days
Rental expense	$ 11.8	$ 13.4
Common area maintenance expense	$ 3.8	$ 5
Minimum
Lessee, Lease, Description [Line Items]
Term of contract	1 year
Maximum
Lessee, Lease, Description [Line Items]
Term of contract	10 years

Leases - Components of Lease Ex

Leases - Components of Lease Expense (Details) $ in Thousands	12 Months Ended
	Oct. 02, 2021USD ($)
Leases [Abstract]
Operating lease cost	$ 11,376
Short-term lease cost	392
Variable lease cost	3,836
Total lease cost	$ 15,604

Leases - Maturity of Lease Liab

Leases - Maturity of Lease Liabilities (Details) $ in Thousands	Oct. 02, 2021USD ($)
Leases [Abstract]
2022	$ 13,407
2023	13,263
2024	12,168
2025	9,048
2026	1,672
Thereafter	134
Total lease payments	49,692
Less imputed interest	(5,008)
Total lease liabilities	$ 44,684

Debt - Textual (Details)

Debt - Textual (Details)	1 Months Ended	12 Months Ended
	Jan. 31, 2021USD ($)	Oct. 02, 2021USD ($)	Oct. 03, 2020USD ($)	Sep. 28, 2019USD ($)
Debt Instrument [Line Items]
Repayments of debt		$ 25,000,000	$ 8,333,000	$ 6,667,000
Term Loan
Debt Instrument [Line Items]
Repayments of debt	$ 24,900,000
Revolving credit facility | Line of credit
Debt Instrument [Line Items]
Maximum borrowing capacity		80,000,000
Outstanding borrowings		$ 2,900,000	$ 500,000
Fixed charge ratio, Covenant 1		1
Fixed charge ratio, Covenant 2		1.15
London interbank offered rate (LIBOR) | Revolving credit facility | Line of credit
Debt Instrument [Line Items]
Interest rate, spread on variable rate		2.50%

Debt - Schedule of Debt (Detail

Debt - Schedule of Debt (Details) - USD ($) $ in Thousands	12 Months Ended
	Oct. 03, 2020	Oct. 02, 2021
Debt Instrument [Line Items]
Interest rate, stated percentage	2.40%
Long-term debt, gross	$ 25,000
Unamortized debt issuance costs	(82)
Total indebtedness	24,918
Less short term portion	(6,667)
Long-term debt	$ 18,251	$ 0
London interbank offered rate (LIBOR) | Term Loan
Debt Instrument [Line Items]
Interest rate, spread on variable rate	2.25%

Stockholders' Equity - Textual

Stockholders' Equity - Textual information (Details) - USD ($)	12 Months Ended
	Oct. 02, 2021	Nov. 17, 2020
Equity [Abstract]
Stock repurchase program, authorized amount		$ 50,000,000
Repurchase of common stock (in shares)	1,394,006
Purchase price of common stock	$ 50,000,000
Average price per share (in dollars per share)	$ 35.86
Retirement of treasury stock (in shares)	2,602,208

Stock-Based Compensation - Addi

Stock-Based Compensation - Additional Information (Details) - USD ($) $ / shares in Units, $ in Millions	1 Months Ended	12 Months Ended
	Jul. 31, 2018	Oct. 02, 2021	Oct. 03, 2020	Sep. 28, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options granted, fair value				$ 8.4
Weighted-average grant date fair value (in dollars per share)				$ 4.91
Granted (in shares)		0	0
Fair value of options vested		$ 10.8	$ 27.4	$ 34.3
Intrinsic value of stock options exercised		242.7	40.1	$ 61.1
Unrecognized stock-based compensation expense		$ 6.2	$ 16.9
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period		48 months
Exercisable period		10 years
Unrecognized stock-based compensation expense, period of recognition		10 months 24 days	1 year 6 months
Restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period		4 years
Unrecognized stock-based compensation expense, period of recognition		2 years 6 months
Unrecognized stock-based compensation expense		$ 90
Performance stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized stock-based compensation expense, period of recognition		1 year 2 months 12 days
Unrecognized stock-based compensation expense		$ 3.6
2018 Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding shares increase for future issuance	5.00%
Shares reserved for future issuance (in shares)		34,376,127

Stock-Based Compensation - Sche

Stock-Based Compensation - Schedule of Stock Option Activity (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Oct. 02, 2021	Oct. 03, 2020
Number of Options
Beginning balance (in shares)	28,422,940
Exercised (in shares)	(13,397,782)
Forfeited (in shares)	(479,919)
Ending balance (in shares)	14,545,239	28,422,940
Options exercisable (in shares)	12,723,601
Options vested and expected to vest (in shares)	14,404,584
Weighted Average Exercise Price
Beginning balance (in dollars per share)	$ 12.03
Exercised (in dollars per share)	11.04
Forfeited (in dollars per share)	14.44
Ending balance (in dollars per share)	12.86	$ 12.03
Option exercisable (in dollars per share)	12.62
Options vested and expected to vest (in dollars per share)	$ 12.85
Additional Information
Weighted-Average Remaining Contractual Term	5 years 1 month 6 days	5 years 7 months 6 days
Options exercisable - Weighted Average Remaining Contractual Term	4 years 10 months 24 days
Options vested and expected to vest - Weighted Average Remaining Contractual Term	5 years 1 month 6 days
Aggregate Intrinsic Value	$ 282,141	$ 99,053
Options exercisable - Weighted Average Intrinsic Value	249,899
Options vested and expected to vest - Weighted Average Intrinsic Value	$ 279,604

Stock-Based Compensation - Sc_2

Stock-Based Compensation - Schedule of Restricted Stock Unit Activity (Details) - Restricted stock units $ / shares in Units, $ in Thousands	12 Months Ended
	Oct. 02, 2021USD ($)$ / sharesshares
Number of Units
Outstanding, beginning balance (in shares) | shares	11,647,951
Granted (in shares) | shares	2,860,688
Released (in shares) | shares	(4,146,278)
Forfeited (in shares) | shares	(1,078,836)
Outstanding, ending balance (in shares) | shares	9,283,525
Units expected to vest (in shares) | shares	7,887,232
Weighted-Average Grant Date Fair Value
Outstanding, beginning balance (in dollars per share) | $ / shares	$ 10.50
Granted (in dollars per share) | $ / shares	19.07
Released (in dollars per share) | $ / shares	11.38
Forfeited (in dollars per share) | $ / shares	11.45
Outstanding, ending balance (in dollars per share) | $ / shares	12.64
Vested and expected to vest - Weighted Average Exercise Price (in dollars per share) | $ / shares	$ 12.54
Additional Information
Aggregate Intrinsic Value, beginning balance | $	$ 180,543
Aggregate Intrinsic Value, ending balance | $	299,487
Vested and expected to vest - Weighted Average Intrinsic Value | $	$ 254,442

Stock-Based Compensation - Summ

Stock-Based Compensation - Summary of Performance Stock Units (Details) - Performance stock units $ / shares in Units, $ in Thousands	12 Months Ended
	Oct. 02, 2021USD ($)$ / sharesshares
Number of Units
Outstanding, beginning balance (in shares)	0
Granted (in shares)	158,521
Vested (in shares)	0
Forfeited (in shares)	0
Outstanding, ending balance (in shares)	158,521
Weighted-Average Grant Date Fair Value
Outstanding, beginning balance (in dollars per share) | $ / shares	$ 0
Granted (in dollars per share) | $ / shares	22.81
Outstanding, ending balance (in dollars per share) | $ / shares	$ 22.81
Additional Information
Aggregate Intrinsic Value, beginning balance | $	$ 0
Aggregate Intrinsic Value, ending balance | $	$ 5,114

Stock-Based Compensation - Sc_3

Stock-Based Compensation - Schedule of Stock-Based Compensation Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Oct. 02, 2021	Oct. 03, 2020	Sep. 28, 2019
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock-based compensation expense	$ 62,127	$ 57,610	$ 46,575
Cost of revenue
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock-based compensation expense	988	1,106	985
Research and development
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock-based compensation expense	25,075	23,439	17,643
Sales and marketing
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock-based compensation expense	13,570	14,359	12,965
General and administrative
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock-based compensation expense	$ 22,494	$ 18,706	$ 14,982

Income Taxes - Schedule of Inco

Income Taxes - Schedule of Income (Loss) Before Provision For (Benefit From) Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Oct. 02, 2021	Oct. 03, 2020	Sep. 28, 2019
Income Tax Disclosure [Abstract]
Domestic	$ 126,810	$ (15,194)	$ (858)
Foreign	30,115	(4,889)	(218)
Income (loss) before provision for (benefit from) income taxes	$ 156,925	$ (20,083)	$ (1,076)

Income Taxes - Schedule of Prov

Income Taxes - Schedule of Provision For (Benefit From) Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Oct. 02, 2021	Oct. 03, 2020	Sep. 28, 2019
Current:
U.S. Federal	$ 0	$ (1,388)	$ 1,366
U.S. State	440	724	1,132
Foreign	6,216	1,220	1,463
Total current	6,656	556	3,961
Deferred:
U.S. Federal	0	0	0
U.S. State	0	0	0
Foreign	(8,326)	(524)	(271)
Total deferred	(8,326)	(524)	(271)
Provision for income taxes	$ (1,670)	$ 32	$ 3,690

Income Taxes - Schedule of Defe

Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Oct. 02, 2021	Oct. 03, 2020	Sep. 28, 2019	Sep. 29, 2018
Deferred tax assets
Accrued expenses and reserves	$ 18,601	$ 12,014
Deferred revenue	13,915	11,831
U.S. net operating loss carryforwards	25,284	8,242
Foreign net operating loss carryforwards	13,240	12,183
Research & development tax credit carryforwards	77,607	53,543
Stock-based compensation	9,082	11,018
Operating lease liability	9,908	14,377
U.S. amortization	8,031	7,648
Depreciation	1,875	1,101
Other	428	603
Total deferred tax assets	177,971	132,560
Valuation allowance	(155,978)	(113,939)	$ (95,088)	$ (72,380)
Deferred tax assets, net of valuation allowance	21,993	18,621
Deferred tax liabilities
Tax accounting method change	(962)	(2,946)
Right-of-use asset	(7,388)	(9,914)
Foreign amortization	(5,833)	(6,093)
Depreciation	(32)	(187)
Other	(144)	(115)
Total deferred tax liabilities	(14,359)	(19,255)
Net deferred tax assets (liabilities)	7,634
Net deferred tax assets (liabilities)		(634)
Deferred tax assets	10,028	1,800
Deferred tax liabilities	$ (2,394)	$ (2,434)

Income Taxes - Textual (Details

Income Taxes - Textual (Details) $ in Millions	12 Months Ended
	Oct. 02, 2021USD ($)
Operating Loss Carryforwards [Line Items]
Undistributed earnings	$ 5.4
NETHERLANDS
Operating Loss Carryforwards [Line Items]
Release of valuation allowance	7.8
Federal
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards	101.4
Federal | Tax year expiration, indefinite
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards	70.3
Federal | Tax year expiration, 2027
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards	31.1
Federal | Research tax credit carryforward
Operating Loss Carryforwards [Line Items]
Tax credit carryforward	62
State
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards	64.6
State | Research tax credit carryforward
Operating Loss Carryforwards [Line Items]
Tax credit carryforward	44.3
Foreign
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards	$ 53.3

Income Taxes - Summary of Chang

Income Taxes - Summary of Changes in Valuation Allowance (Details) - USD ($) $ in Thousands	12 Months Ended
	Oct. 02, 2021	Oct. 03, 2020	Sep. 28, 2019
Valuation Allowance [Roll Forward]
Beginning balance	$ 113,939	$ 95,088	$ 72,380
Increase during the period	49,791	18,851	22,708
Decrease during the period	(7,752)	0	0
Ending balance	$ 155,978	$ 113,939	$ 95,088

Income Taxes - Schedule of Effe

Income Taxes - Schedule of Effective Income Tax Rate Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Oct. 02, 2021	Oct. 03, 2020	Sep. 28, 2019
Income Tax Disclosure [Abstract]
U.S. federal income taxes at statutory rate	$ 32,954	$ (4,217)	$ (226)
U.S. state and local income taxes, net of federal benefit and state credits	(9,473)	(2,798)	(9,315)
Foreign income tax rate differential	1,430	(75)	129
Stock-based compensation	(47,496)	869	(2,399)
Federal research and development tax credits	(21,535)	(8,012)	(8,418)
Unrecognized federal tax benefits	4,041	815	(2,806)
Change in tax rate	(2,681)	0	1,161
Global intangible low taxed income, net of foreign tax credits	0	0	239
Base erosion and anti-abuse tax	0	(781)	781
Other	(565)	598	822
Change in valuation allowance	41,655	13,633	23,722
Provision for income taxes	$ (1,670)	$ 32	$ 3,690

Income Taxes - Schedule of Chan

Income Taxes - Schedule of Changes in Unrecognized Tax Benefits (Details) - USD ($) $ in Thousands	12 Months Ended
	Oct. 02, 2021	Oct. 03, 2020	Sep. 28, 2019
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Beginning balance	$ 14,721	$ 12,527	$ 17,794
Decrease - tax positions in prior periods	(4)	(768)	(8,226)
Increase - tax positions in current periods	6,535	2,962	2,959
Ending balance	$ 21,252	$ 14,721	$ 12,527

Net Income (Loss) Per Share A_3

Net Income (Loss) Per Share Attributable to Common Stockholders - Narrative (Details)	Aug. 06, 2018shares
Earnings Per Share [Abstract]
Preferred stock automatically converted into common stock (in shares)	32,482,590
Convertible preferred stock, conversion ratio	1

Net Income (Loss) Per Share A_4

Net Income (Loss) Per Share Attributable to Common Stockholders - Schedule of Earnings Per Share, Basic and Diluted (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Oct. 02, 2021	Jul. 03, 2021	Apr. 03, 2021	Jan. 02, 2021	Oct. 03, 2020	Jun. 27, 2020	Mar. 28, 2020	Dec. 28, 2019	Oct. 02, 2021	Oct. 03, 2020	Sep. 28, 2019
Numerator:
Net income (loss)	$ (8,744)	$ 17,826	$ 17,221	$ 132,292	$ 18,411	$ (56,980)	$ (52,320)	$ 70,775	$ 158,595	$ (20,115)	$ (4,766)
Denominator:
Weighted-average shares of common stock - basic (in shares)									122,245,212	109,807,154	103,783,006
Weighted-average shares of common stock - diluted (in shares)									140,309,152	109,807,154	103,783,006
Net income (loss) attributable to common stockholders:
Net income (loss) per share - basic (in dollars per share)	$ (0.07)	$ 0.14	$ 0.14	$ 1.14	$ 0.17	$ (0.52)	$ (0.48)	$ 0.65	$ 1.30	$ (0.18)	$ (0.05)
Net income (loss) per share - diluted (in dollars per share)	$ (0.07)	$ 0.12	$ 0.12	$ 1.01	$ 0.15	$ (0.52)	$ (0.48)	$ 0.60	$ 1.13	$ (0.18)	$ (0.05)
Stock options to purchase common stock
Denominator:
Effect of potentially dilutive stock options, RSUs, and PSUs (in shares)									10,120,238	0	0
Restricted stock units
Denominator:
Effect of potentially dilutive stock options, RSUs, and PSUs (in shares)									7,875,245	0	0
Performance stock units
Denominator:
Effect of potentially dilutive stock options, RSUs, and PSUs (in shares)									68,457	0	0

Net Income (Loss) Per Share A_5

Net Income (Loss) Per Share Attributable to Common Stockholders - Schedule of Potentially Dilutive Shares Excluded From Computation of Diluted Earnings Per Share (Details) - shares	12 Months Ended
	Oct. 02, 2021	Oct. 03, 2020	Sep. 28, 2019
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation (in shares)	12,590,730	42,728,825	46,447,646
Stock options to purchase common stock
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation (in shares)	9,030,004	33,503,698	42,300,183
Restricted stock units
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation (in shares)	3,505,140	9,225,127	4,147,463
Performance stock units
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation (in shares)	55,586	0	0

Commitments and Contingencies -

Commitments and Contingencies - Schedule of Purchase Obligations (Details) $ in Thousands	Oct. 02, 2021USD ($)
Total
Total	$ 149,600
2022	124,935
2023	20,898
2024	3,767
2025	0
2026	0
Beyond	0
Other purchase obligations
Total	57,112
2022	32,447
2023	20,898
2024	3,767
2025	0
2026	0
Beyond	0
Inventory-related purchase obligations
Total
Total	92,488
2022	92,488
2023	0
2024	0
2025	0
2026	0
Beyond	$ 0

Commitments and Contingencies_2

Commitments and Contingencies - Textual (Details) $ in Millions	Oct. 18, 2021patent	Aug. 13, 2021patent	Jun. 23, 2021claimFeature	Jun. 04, 2021patent	Nov. 02, 2020patent	Sep. 29, 2020patent	Aug. 21, 2020patent	Jun. 12, 2020patent	Jun. 11, 2020patent	Mar. 10, 2017patent	Oct. 02, 2021USD ($)patent
Loss Contingencies [Line Items]
Tariff refund | $											$ 15.4
Other Current Assets
Loss Contingencies [Line Items]
Income taxes receivable | $											$ 0.8
Implicit, LLC
Loss Contingencies [Line Items]
Loss contingency, patents allegedly infringed										2
Alphabet Inc. ("Alphabet") and Google LLC ("Google") [Member]
Loss Contingencies [Line Items]
Gain contingency, patents found infringed upon		5
Gain contingency, patents allegedly infringed upon						5
Sonos, Inc.
Loss Contingencies [Line Items]
Gain contingency, patents allegedly infringed upon								2
Gain contingency, patents allegedly infringed upon, number of claim features scheduled for early disposition											2
Loss contingency, patents allegedly infringed									5
Loss contingency, patents found not infringed				1	1
Gain contingency, patents found not infringed, number of claim features | claimFeature			2
Sonos, Inc. | Subsequent Event
Loss Contingencies [Line Items]
Loss contingency, patents allegedly infringed, inter parties review granted	1
Sonos, Inc. | Canada
Loss Contingencies [Line Items]
Gain contingency, patents allegedly infringed upon							1
Sonos, Inc. | Europe And France
Loss Contingencies [Line Items]
Gain contingency, patents allegedly infringed upon							2
Government
Loss Contingencies [Line Items]
Income tax examination, refund | $											$ 18.3

Quarterly Financial Data (Una_3

Quarterly Financial Data (Unaudited) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Oct. 02, 2021	Jul. 03, 2021	Apr. 03, 2021	Jan. 02, 2021	Oct. 03, 2020	Jun. 27, 2020	Mar. 28, 2020	Dec. 28, 2019	Oct. 02, 2021	Oct. 03, 2020	Sep. 28, 2019
Quarterly Financial Information Disclosure [Abstract]
Revenue	$ 359,539	$ 378,672	$ 332,949	$ 645,584	$ 339,837	$ 249,310	$ 175,098	$ 562,083	$ 1,716,744	$ 1,326,328	$ 1,260,823
Gross profit	166,931	177,861	165,776	299,425	161,536	109,791	73,009	227,620	809,994	571,956	527,343
Net income (loss)	$ (8,744)	$ 17,826	$ 17,221	$ 132,292	$ 18,411	$ (56,980)	$ (52,320)	$ 70,775	$ 158,595	$ (20,115)	$ (4,766)
Net income (loss) per share - basic (in dollars per share)	$ (0.07)	$ 0.14	$ 0.14	$ 1.14	$ 0.17	$ (0.52)	$ (0.48)	$ 0.65	$ 1.30	$ (0.18)	$ (0.05)
Net income (loss) per share - diluted (in dollars per share)	$ (0.07)	$ 0.12	$ 0.12	$ 1.01	$ 0.15	$ (0.52)	$ (0.48)	$ 0.60	$ 1.13	$ (0.18)	$ (0.05)

Restructuring Plan - Narrative

Restructuring Plan - Narrative (Details) - 2020 Restructuring Plan - Facility Closing $ in Millions	Jun. 23, 2020office	Jan. 02, 2021USD ($)	Oct. 03, 2020USD ($)
Restructuring Cost and Reserve [Line Items]
Percent of global headcount eliminated	12.00%
Number of satellite offices closed | office	6
Restructuring costs			$ 26.4
Gains on restructuring of debt		$ 2.8

Restructuring Plan - Summary of

Restructuring Plan - Summary of Restructuring and Related Costs (Details) $ in Thousands	12 Months Ended
	Oct. 03, 2020USD ($)
Restructuring and Related Activities [Abstract]
Employee related costs	$ 8,985
Right-of-use asset impairment and abandonment charges	8,139
Property and equipment abandonment charges	5,824
Other restructuring costs	3,337
Total	$ 26,285

Subsequent Events (Details)

Subsequent Events (Details)	1 Months Ended
	Nov. 09, 2021USD ($)business	Nov. 17, 2021USD ($)	Oct. 31, 2021USD ($)	Oct. 02, 2021USD ($)	Nov. 17, 2020USD ($)
Subsequent Event [Line Items]
Stock repurchase program, authorized amount					$ 50,000,000
Revolving credit facility | Line of credit
Subsequent Event [Line Items]
Maximum borrowing capacity				$ 80,000,000
Subsequent Event
Subsequent Event [Line Items]
Number of businesses acquired | business	2
Total purchase consideration	$ 27,000,000
Stock repurchase program, authorized amount		$ 150,000,000
Subsequent Event | Revolving credit facility | Line of credit
Subsequent Event [Line Items]
Maximum borrowing capacity			$ 100,000,000