Ambarella (AMBA) 10-Q 6 Dec 24 2025 Q3 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	9 Months Ended
	Oct. 31, 2024	Nov. 30, 2024
Cover [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Oct. 31, 2024
Document Fiscal Year Focus	2025
Document Fiscal Period Focus	Q3
Trading Symbol	AMBA
Entity Registrant Name	AMBARELLA, INC.
Entity Central Index Key	0001280263
Current Fiscal Year End Date	--01-31
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Current Reporting Status	Yes
Entity Common Stock, Shares Outstanding		41,701,953
Entity File Number	001-35667
Entity Tax Identification Number	98-0459628
Entity Address, Address Line One	3101 Jay Street
Entity Address, City or Town	Santa Clara
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	95054
City Area Code	408
Local Phone Number	734-8888
Entity Incorporation, State or Country Code	E9
Document Quarterly Report	true
Document Transition Report	false
Title of 12(b) Security	Ordinary Shares, $0.00045 Par Value Per Share
Security Exchange Name	NASDAQ
Entity Interactive Data Current	Yes

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Oct. 31, 2024	Jan. 31, 2024
Current assets:
Cash and cash equivalents	$ 127,122	$ 144,914
Marketable debt securities	99,402	75,013
Accounts receivable, net	33,967	24,950
Inventories	36,592	29,043
Restricted cash	7	7
Prepaid expenses and other current assets	6,520	6,230
Total current assets	303,610	280,157
Property and equipment, net	9,684	10,439
Intangible assets, net	44,962	55,136
Operating lease right-of-use assets, net	5,952	5,250
Goodwill	303,625	303,625
Other non-current assets	2,956	3,048
Total assets	670,789	657,655
Current liabilities:
Accounts payable	25,227	28,503
Accrued and other current liabilities	72,974	48,598
Operating lease liabilities, current	3,251	3,443
Income taxes payable	838	1,541
Deferred revenue, current	4,580	894
Total current liabilities	106,870	82,979
Operating lease liabilities, non-current	2,716	1,896
Other long-term liabilities	6,908	12,909
Total liabilities	116,494	97,784
Commitments and contingencies (Note 14)	0	0
Shareholders' equity:
Preference shares, $0.00045 par value per share, 20,000,000 shares authorized and no shares issued and outstanding at October 31, 2024 and January 31, 2024, respectively	0	0
Ordinary shares, $0.00045 par value per share, 200,000,000 shares authorized; 41,670,716 and 40,520,558 shares issued and outstanding at October 31, 2024 and January 31, 2024, respectively	19	18
Additional paid-in capital	786,396	694,967
Accumulated other comprehensive loss	(297)	(183)
Accumulated deficit	(231,823)	(134,931)
Total shareholders’ equity	554,295	559,871
Total liabilities and shareholders' equity	$ 670,789	$ 657,655

Condensed Consolidated Balanc_2

Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) - $ / shares	Oct. 31, 2024	Jan. 31, 2024
Statement of Financial Position [Abstract]
Preference shares, par value	$ 0.00045	$ 0.00045
Preference shares, shares authorized	20,000,000	20,000,000
Preference shares, shares issued	0	0
Preference shares, shares outstanding	0	0
Ordinary shares, par value	$ 0.00045	$ 0.00045
Ordinary shares, shares authorized	200,000,000	200,000,000
Ordinary shares, shares issued	41,670,716	40,520,558
Ordinary shares, shares outstanding	41,670,716	40,520,558

Condensed Consolidated Statemen

Condensed Consolidated Statements of Operations (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 31, 2024	Oct. 31, 2023	Oct. 31, 2024	Oct. 31, 2023
Income Statement [Abstract]
Revenue	$ 82,653	$ 50,595	$ 200,850	$ 174,858
Cost of revenue	32,605	20,612	78,901	68,894
Gross profit	50,048	29,983	121,949	105,964
Operating expenses:
Research and development	58,389	53,702	169,286	163,060
Selling, general and administrative	17,169	18,246	53,905	55,750
Total operating expenses	75,558	71,948	223,191	218,810
Loss from operations	(25,510)	(41,965)	(101,242)	(112,846)
Other income, net	2,091	1,900	6,507	3,923
Loss before income taxes	(23,419)	(40,065)	(94,735)	(108,923)
Provision (benefit) for income taxes	652	1,645	2,157	(113)
Net loss	$ (24,071)	$ (41,710)	$ (96,892)	$ (108,810)
Net loss per share attributable to ordinary shareholders:
Basic	$ (0.58)	$ (1.04)	$ (2.36)	$ (2.74)
Diluted	$ (0.58)	$ (1.04)	$ (2.36)	$ (2.74)
Weighted-average shares used to compute net loss per share attributable to ordinary shareholders:
Basic	41,479,459	40,053,251	41,128,068	39,710,248
Diluted	41,479,459	40,053,251	41,128,068	39,710,248

Condensed Consolidated Statem_2

Condensed Consolidated Statements of Comprehensive Loss (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 31, 2024	Oct. 31, 2023	Oct. 31, 2024	Oct. 31, 2023
Statement of Comprehensive Income [Abstract]
Net loss	$ (24,071)	$ (41,710)	$ (96,892)	$ (108,810)
Other comprehensive loss, net of tax:
Net unrealized losses on investments	(132)	(289)	(114)	(727)
Other comprehensive loss, net of tax	(132)	(289)	(114)	(727)
Comprehensive loss	$ (24,203)	$ (41,999)	$ (97,006)	$ (109,537)

Condensed Consolidated Statem_3

Condensed Consolidated Statements of Shareholders' Equity (Unaudited) - USD ($) $ in Thousands	Total	Outstanding Ordinary Shares [Member]	Additional Paid-in Capital [Member]	Accumulated Other Comprehensive Loss [Member]	Retained Earnings (Accumulated Deficit) [Member]
Beginning Balance, Amount at Jan. 31, 2023	$ 606,088	$ 18	$ 572,076	$ (492)	$ 34,486
Beginning Balance, Shares at Jan. 31, 2023		39,043,000
Issuance of shares through employee equity plans, Amount	5,198	$ 0	5,198
Issuance of shares through employee equity plans, Shares		467,996
Issuance of shares through employee stock purchase plan, Amount	4,448	$ 0	4,448
Issuance of shares through employee stock purchase plan, Shares		80,207
Stock-based compensation expense	26,249		26,249
Other comprehensive (loss) gain - net of tax	110			110
Net loss	(35,902)				(35,902)
Ending Balance, Amount at Apr. 30, 2023	606,191	$ 18	607,971	(382)	(1,416)
Ending Balance, Shares at Apr. 30, 2023		39,591,203
Beginning Balance, Amount at Jan. 31, 2023	606,088	$ 18	572,076	(492)	34,486
Beginning Balance, Shares at Jan. 31, 2023		39,043,000
Other comprehensive (loss) gain - net of tax	(727)
Net loss	(108,810)
Ending Balance, Amount at Oct. 31, 2023	591,788	$ 18	667,313	(1,219)	(74,324)
Ending Balance, Shares at Oct. 31, 2023		40,229,267
Beginning Balance, Amount at Apr. 30, 2023	606,191	$ 18	607,971	(382)	(1,416)
Beginning Balance, Shares at Apr. 30, 2023		39,591,203
Issuance of shares through employee equity plans, Amount	553	$ 0	553
Issuance of shares through employee equity plans, Shares		279,568
Stock-based compensation expense	27,320		27,320
Other comprehensive (loss) gain - net of tax	(548)			(548)
Net loss	(31,198)				(31,198)
Ending Balance, Amount at Jul. 31, 2023	602,318	$ 18	635,844	(930)	(32,614)
Ending Balance, Shares at Jul. 31, 2023		39,870,771
Issuance of shares through employee equity plans, Amount	334		334
Issuance of shares through employee equity plans, Shares		286,684
Issuance of shares through employee stock purchase plan, Amount	3,486		3,486
Issuance of shares through employee stock purchase plan, Shares		71,812
Stock-based compensation expense	27,649		27,649
Other comprehensive (loss) gain - net of tax	(289)			(289)
Net loss	(41,710)				(41,710)
Ending Balance, Amount at Oct. 31, 2023	591,788	$ 18	667,313	(1,219)	(74,324)
Ending Balance, Shares at Oct. 31, 2023		40,229,267
Beginning Balance, Amount at Jan. 31, 2024	$ 559,871	$ 18	694,967	(183)	(134,931)
Beginning Balance, Shares at Jan. 31, 2024	40,520,558	40,520,558
Issuance of shares through employee equity plans, Amount	$ 4,237	$ 0	4,237
Issuance of shares through employee equity plans, Shares		367,413
Issuance of shares through employee stock purchase plan, Amount	4,055	$ 0	4,055
Issuance of shares through employee stock purchase plan, Shares		97,074
Stock-based compensation expense	25,583		25,583
Other comprehensive (loss) gain - net of tax	(389)			(389)
Net loss	(37,932)				(37,932)
Ending Balance, Amount at Apr. 30, 2024	555,425	$ 18	728,842	(572)	(172,863)
Ending Balance, Shares at Apr. 30, 2024		40,985,045
Beginning Balance, Amount at Jan. 31, 2024	$ 559,871	$ 18	694,967	(183)	(134,931)
Beginning Balance, Shares at Jan. 31, 2024	40,520,558	40,520,558
Other comprehensive (loss) gain - net of tax	$ (114)
Net loss	(96,892)
Ending Balance, Amount at Oct. 31, 2024	$ 554,295	$ 19	786,396	(297)	(231,823)
Ending Balance, Shares at Oct. 31, 2024	41,670,716	41,670,716
Beginning Balance, Amount at Apr. 30, 2024	$ 555,425	$ 18	728,842	(572)	(172,863)
Beginning Balance, Shares at Apr. 30, 2024		40,985,045
Issuance of shares through employee equity plans, Amount	1,015	$ 1	1,014
Issuance of shares through employee equity plans, Shares		287,626
Stock-based compensation expense	25,593		25,593
Other comprehensive (loss) gain - net of tax	407			407
Net loss	(34,889)				(34,889)
Ending Balance, Amount at Jul. 31, 2024	547,551	$ 19	755,449	(165)	(207,752)
Ending Balance, Shares at Jul. 31, 2024		41,272,671
Issuance of shares through employee equity plans, Amount	1,756		1,756
Issuance of shares through employee equity plans, Shares		302,783
Issuance of shares through employee stock purchase plan, Amount	3,980		3,980
Issuance of shares through employee stock purchase plan, Shares		95,262
Stock-based compensation expense	25,211		25,211
Other comprehensive (loss) gain - net of tax	(132)			(132)
Net loss	(24,071)			0	(24,071)
Ending Balance, Amount at Oct. 31, 2024	$ 554,295	$ 19	$ 786,396	$ (297)	$ (231,823)
Ending Balance, Shares at Oct. 31, 2024	41,670,716	41,670,716

Condensed Consolidated Statem_4

Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Oct. 31, 2024	Oct. 31, 2023
Cash flows from operating activities:
Net loss	$ (96,892)	$ (108,810)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization	19,234	18,402
Amortization (accretion) of premium (discount) on marketable debt securities, net	(491)	(957)
Stock-based compensation	80,495	82,796
Other non-cash items, net	262	(2,610)
Changes in operating assets and liabilities:
Accounts receivable	(9,017)	29,019
Inventories	(7,373)	9,703
Prepaid expenses and other current assets	(293)	1,539
Other non-current assets	120	105
Accounts payable	(3,282)	(8,553)
Accrued and other current liabilities	25,332	6,938
Income taxes payable	(703)	(1,721)
Deferred revenue	3,740	171
Operating lease liabilities	(2,937)	(2,940)
Other long-term liabilities	211	(26)
Net cash provided by operating activities	8,406	23,056
Cash flows from investing activities:
Purchase of investments	(57,343)	(34,433)
Sales of investments	17,866	5,222
Maturities of investments	15,613	44,310
Purchase of tangible and intangible assets	(6,196)	(10,047)
Net cash provided by (used in) investing activities	(30,060)	5,052
Cash flows from financing activities:
Proceeds from exercise of stock options and employee stock purchase plan	9,657	6,912
Long-term financing payment for intangible assets	(5,795)	(4,775)
Net cash provided by financing activities	3,862	2,137
Net increase (decrease) in cash, cash equivalents and restricted cash	(17,792)	30,245
Cash, cash equivalents and restricted cash at beginning of period	144,921	113,549
Cash, cash equivalents and restricted cash at end of period	127,129	143,794
Supplemental disclosure of cash flow information:
Cash paid for income taxes	2,236	5,499
Supplemental disclosure of noncash investing activities:
Unpaid liabilities related to tangible and intangible assets purchases	$ 763	$ 6,868

Pay vs Performance Disclosure

Pay vs Performance Disclosure - USD ($) $ in Thousands	3 Months Ended						9 Months Ended
	Oct. 31, 2024	Jul. 31, 2024	Apr. 30, 2024	Oct. 31, 2023	Jul. 31, 2023	Apr. 30, 2023	Oct. 31, 2024	Oct. 31, 2023
Pay vs Performance Disclosure
Net Income (Loss)	$ (24,071)	$ (34,889)	$ (37,932)	$ (41,710)	$ (31,198)	$ (35,902)	$ (96,892)	$ (108,810)

Insider Trading Arrangements

Insider Trading Arrangements	3 Months Ended
	Oct. 31, 2024 shares
Trading Arrangements, by Individual
Material Terms of Trading Arrangement	Securities Trading Plans of Directors and Executive Officers During our last fiscal quarter ended October 31, 2024, the following officer adopted a “Rule 10b5-1 trading arrangement” as defined in Regulation S-K Item 408, as follows: On October 2, 2024 , Chan Lee , our Chief Operating Officer , adopted a Rule 10b5-1 trading arrangement providing for the sale from time to time of up to an aggregate of 10,000 of our ordinary shares. The trading arrangement is intended to satisfy the affirmative defense in Rule 10b5-1(c). The duration of the trading arrangement is until October 15, 2025 , or earlier if all transactions under the trading arrangement are completed. No other officers, as defined in Rule 16a-1(f), or directors adopted or terminated a “Rule 10b5-1 trading arrangement” or a “non-Rule 10b5-1 trading arrangement,” as defined in Regulation S-K Item 408, during the last fiscal quarter ended October 31, 2024.
Rule 10b5-1 Arrangement Adopted	false
Non-Rule 10b5-1 Arrangement Adopted	false
Rule 10b5-1 Arrangement Terminated	false
Non-Rule 10b5-1 Arrangement Terminated	false
Chan Lee [Member]
Trading Arrangements, by Individual
Name	Chan Lee
Title	Chief Operating Officer
Rule 10b5-1 Arrangement Adopted	true
Adoption Date	October 2, 2024
Expiration Date	October 15, 2025
Aggregate Available	10,000

Organization and Summary of Sig

Organization and Summary of Significant Accounting Policies	9 Months Ended
	Oct. 31, 2024
Accounting Policies [Abstract]
Organization and Summary of Significant Accounting Policies	1. Organization and Summary of Significant Accounting Policies Organization Ambarella, Inc. (the Company) was incorporated in the Cayman Islands on January 15, 2004. The Company is a leading developer of low-power semiconductor solutions offering high-definition (HD) and Ultra HD compression, advanced image signal processing, and powerful artificial intelligence (AI) processing. The Company combines its processor design capabilities with its expertise in video and image processing, algorithms and software to provide a technology platform that is designed to be easily scalable across multiple applications and enable rapid and efficient product development. The Company’s system-on-a-chip, or SoC, designs fully integrate high-definition video processing, image processing, AI computer vision algorithms, audio processing and system functions onto a single chip. These low power SoCs deliver exceptional video and image quality and can extract valuable data from high-resolution video and radar streams. The Company is currently addressing a broad range of human and computer vision applications, including video security, advanced driver assistance systems (ADAS), electronic mirrors, drive recorders, driver/cabin monitoring systems, autonomous driving, and industrial and robotic applications. The Company sells its solutions to leading original equipment manufacturers, or OEMs, who include the Company’s SoCs in their products, and original design manufacturers, or ODMs, who include the Company’s SoCs in the products that they supply to OEMs, globally. Basis of Presentation The accompanying unaudited condensed consolidated financial statements have been prepared by the Company in accordance with the instructions to Form 10-Q pursuant to the rules and regulations of the Securities and Exchange Commission (SEC) and, therefore, do not include all information and notes normally provided in audited financial statements. The accounting policies are described in the “Notes to Consolidated Financial Statements” in the Annual Report on Form 10-K for the 2024 fiscal year filed with the SEC on March 29, 2024 (the Form 10-K) and updated, as necessary, in this Form 10-Q. The year-end condensed consolidated balance sheet data presented for comparative purposes was derived from audited financial statements. In the opinion of management, all adjustments (consisting of normal recurring accruals and adjustments) considered necessary for a fair statement have been included. The results of operations for any interim period are not necessarily indicative of, nor comparable to, the results of operations for any other interim period or for a full fiscal year. These unaudited condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and related notes contained in the Form 10-K. Basis of Consolidation The Company’s fiscal year ends on January 31. The condensed consolidated financial statements of the Company and its subsidiaries have been prepared in conformity with U.S. GAAP. All intercompany transactions and balances have been eliminated upon consolidation. Significant Accounting Policies There have been no material changes to the Company’s significant accounting policies described in Note 1 - Organization and Summary of Significant Accounting Policies, of the Notes to Consolidated Financial Statements included in the Company’s Annual Report on Form 10-K for the fiscal year ended January 31, 2024. Concentration of Risk The Company’s products are manufactured, assembled and tested by third-party contractors located primarily in Asia. The Company does not have long-term agreements with these contractors. A significant disruption in the operations of one or more of these contractors would impact the production of the Company’s products which could have a material adverse effect on its business, financial condition and results of operations. A substantial portion of the Company’s revenue is derived from sales through its two major distributors and one ODM. WT Microelectronics Co., Ltd., formerly Wintech Microelectronics Co., Ltd., or WT, serves as a non-exclusive sales representative and fulfillment partner in Asia other than Japan, and Hakuto Co., Ltd., or Hakuto, serves as a Japanese distributor. Chicony Electronics Co., Ltd., or Chicony, is an ODM that manufactures devices incorporating the Company’s solutions on behalf of multiple end-customers. Termination of the relationships with these customers could result in a temporary or permanent loss of revenue. Furthermore, any credit issues from these customers could impair their abilities to make timely payment to the Company. See Note 15 for additional information regarding revenue and credit concentration with these customers. Financial instruments that potentially subject the Company to concentrations of credit risk consist primarily of cash, cash equivalents, marketable debt securities and accounts receivable. The Company maintains its cash primarily in checking accounts with reputable financial institutions. Cash deposits held with these financial institutions may exceed the amount of insurance provided on such deposits. The Company has not experienced any losses on deposits of its cash. In order to limit the exposure of each investment, the cash equivalents and marketable debt securities consist primarily of money market funds, fixed deposit accounts, commercial paper, corporate bonds, asset-backed securities and U.S. government securities which management assesses to be highly liquid. The Company does not hold or issue financial instruments for trading purposes. The Company performs ongoing credit evaluation of its customers and adjusts credit limits based upon payment history and customers’ credit worthiness. The Company regularly monitors collections and payments from its customers. Restricted Cash Amounts included in restricted cash represent those required to be set aside to secure certain transactions in a foreign entity. As of October 31, 2024 and January 31, 2024, restricted cash was immaterial, respectively. The following table presents cash, cash equivalents and restricted cash reported on the condensed consolidated balance sheets, and the totals are presented on the condensed consolidated statements of cash flows: As of October 31, January 31, October 31, January 31, (in thousands) Cash and cash equivalents $ 127,122 $ 144,914 $ 143,787 $ 113,541 Restricted cash 7 7 7 8 Total as presented in the condensed consolidated statements of cash flows $ 127,129 $ 144,921 $ 143,794 $ 113,549 Recent Accounting Pronouncements In November 2024, the Financial Accounting Standards Board (FASB) issued Accounting Standard Update (ASU) 2024-03, Income Statement - Reporting Comprehensive Income - Expense Disaggregation Disclosures (Subtopic 220-40): Disaggregation of Income Statement Expenses . This new guidance requires public entities to provide disaggregated disclosures, in the notes to the financial statements, of certain categories of expenses that are included in expense line items on the face of income statement. The ASU may be applied prospectively or retrospectively and is effective for fiscal years beginning after December 15, 2026 and for interim periods beginning after December 15, 2027. Early adoption is permitted. The Company is currently evaluating the impact of adoption of this new guidance on its consolidated financial statements disclosures.

Financial Instruments and Fair

Financial Instruments and Fair Value	9 Months Ended
	Oct. 31, 2024
Investments, All Other Investments [Abstract]
Financial Instruments and Fair Value	2. Financial Instruments and Fair Value The Company maintains its cash primarily in accounts with reputable financial institutions. The Company also invests a portion of its cash in money market funds and debt securities that are denominated in United States dollars, as well as non-marketable equity investments in privately-held companies. The debt security investment portfolio consists of commercial paper, corporate bonds, asset-backed securities and U.S. government securities. All of the money market funds and debt security investments are classified as available-for-sale securities and reported at fair value in the condensed consolidated balance sheets as follows: As of October 31, 2024 Amortized Cost Unrealized Gains Unrealized Losses Fair Value (in thousands) Money market funds $ 82 $ — $ — $ 82 Commercial paper — — — — Corporate bonds 53,537 134 ( 148 ) 53,523 Asset-backed securities 20,688 15 ( 91 ) 20,612 U.S. government securities 25,474 — ( 207 ) 25,267 Total cash equivalents and marketable debt securities $ 99,781 $ 149 $ ( 446 ) $ 99,484 As of January 31, 2024 Amortized Cost Unrealized Gains Unrealized Losses Fair Value (in thousands) Money market funds $ 296 $ — $ — $ 296 Commercial paper 30,806 — — 30,806 Corporate bonds 38,867 180 ( 135 ) 38,912 Asset-backed securities 15,212 14 ( 96 ) 15,130 U.S. government securities 21,118 — ( 146 ) 20,972 Total cash equivalents and marketable debt securities $ 106,299 $ 194 $ ( 377 ) $ 106,116 The following table provides the breakdown of unrealized losses from available-for-sale securities as of October 31, 2024 and January 31, 2024, respectively, aggregated by investment category and length of time that individual securities have been in a continuous loss position: As of October 31, 2024 Less than 12 Months 12 Months or Greater Total Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses (in thousands) Corporate bonds $ 23,362 $ ( 126 ) $ 5,103 $ ( 22 ) $ 28,465 $ ( 148 ) Asset-backed securities 9,132 ( 62 ) 4,998 ( 29 ) 14,130 ( 91 ) U.S. government securities 20,486 ( 181 ) 4,782 ( 26 ) 25,268 ( 207 ) Total marketable debt securities at loss position $ 52,980 $ ( 369 ) $ 14,883 $ ( 77 ) $ 67,863 $ ( 446 ) As of January 31, 2024 Less than 12 Months 12 Months or Greater Total Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses (in thousands) Corporate bonds $ 9,050 $ ( 19 ) $ 8,363 $ ( 116 ) $ 17,413 $ ( 135 ) Asset-backed securities 4,821 ( 15 ) 6,289 ( 81 ) 11,110 ( 96 ) U.S. government securities 15,020 ( 65 ) 5,952 ( 81 ) 20,972 ( 146 ) Total marketable debt securities at loss position $ 28,891 $ ( 99 ) $ 20,604 $ ( 278 ) $ 49,495 $ ( 377 ) As of October 31, 2024 January 31, 2024 (in thousands) Included in cash equivalents $ 82 $ 31,103 Included in marketable debt securities 99,402 75,013 Total cash equivalents and marketable debt securities $ 99,484 $ 106,116 The contractual maturities of available-for-sale securities at October 31, 2024 and January 31, 2024 were as follows: As of October 31, 2024 January 31, 2024 (in thousands) Due within one year $ 30,384 $ 50,216 Due in 1 - 5 years 69,100 55,900 Total cash equivalents and marketable debt securities $ 99,484 $ 106,116 The unrealized gains and losses on the available-for-sale securities were primarily caused by fluctuations in market value and interest rates as a result of the economic environment. In accordance with ASU No. 2016-13, Financial Instruments-Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments, the Company estimates the expected losses at an individual security level whenever a security’s fair value is below its amortized cost basis using the discounted cash flow method. The credit-related portion of the loss is recognized in other income, net, in the condensed consolidated statements of operations but is limited to the difference between the fair value and the amortized cost basis of the security, adjusted for accrued interest. The non-credit-related portion of the loss is recognized in accumulated other comprehensive loss in the condensed consolidated balance sheets. The credit-related losses were not material for the three and nine months ended October 31, 2024 and 2023, respectively. The following fair value hierarchy is applied for disclosure of the inputs used to measure fair value of available-for-sale securities. This hierarchy prioritizes the inputs into three broad levels as follows: Level 1—Inputs are unadjusted quoted prices in active markets for identical assets or liabilities. Level 2—Inputs are quoted prices for similar assets and liabilities in active markets or inputs that are observable for the assets or liabilities, either directly or indirectly through market corroboration, for substantially the full term of the financial instruments. Level 3—Unobservable inputs based on the Company’s own assumptions used to measure assets and liabilities at fair value. The inputs require significant management judgment or estimation. The Company measures the fair value of money market funds using quoted prices in active markets for identical assets and classifies them within Level 1. The fair value of other debt securities are obtained based on quoted prices for similar assets in active markets and are classified within Level 2. The following tables present the fair value of available-for-sale securities measured on a recurring basis as of October 31, 2024 and January 31, 2024, respectively: As of October 31, 2024 Total Level 1 Level 2 Level 3 (in thousands) Money market funds $ 82 $ 82 $ — $ — Commercial paper — — — — Corporate bonds 53,523 — 53,523 — Asset-backed securities 20,612 — 20,612 — U.S. government securities 25,267 — 25,267 — Total cash equivalents and marketable debt securities $ 99,484 $ 82 $ 99,402 $ — As of January 31, 2024 Total Level 1 Level 2 Level 3 (in thousands) Money market funds $ 296 $ 296 $ — $ — Commercial paper 30,806 — 30,806 — Corporate bonds 38,912 — 38,912 — Asset-backed securities 15,130 — 15,130 — U.S. government securities 20,972 — 20,972 — Total cash equivalents and marketable debt securities $ 106,116 $ 296 $ 105,820 $ — In addition to available-for-sale securities, the Company also has fixed deposit accounts that are classified as cash equivalents. As of October 31, 2024 and January 31, 2024, the carrying value of fixed deposit accounts was approximately $ 3.7 million and $ 7.0 million, respectively, which represented their fair value within level 1 hierarchy. Interest income from financial instruments, including amortization of premiums and accretion of discounts, as well as realized gains and losses from available-for-sale securities, are recorded in other income, net, in the condensed consolidated statements of operations. For the three months ended October 31, 2024 and 2023, interest income and realized gains and losses, net, were approximately $ 2.1 million and $ 2.2 million, respectively. For the nine months ended October 31, 2024 and 2023, interest income and realized gains and losses, net, were approximately $ 6.6 million and $ 5.5 million, respectively. The Company's non-marketable equity investments in privately-held companies are measured at cost, adjusted for subsequent observable price change or any impairment. Upon determining that an impairment or observable price change exists, the Company records any adjustment to the fair value through other income, net, in the condensed consolidated statements of operations. There was no significant change in the fair value and there was no impairment loss related to equity investment for the three and nine months ended October 31, 2024. There was approximately $ 1.2 million of impairment recognized for the three and nine months ended October 31, 2023. As of October 31, 2024 and January 31, 2024, the non-marketable equity investment was approximately $ 1.2 million, respectively, and recorded in other non-current assets in the condensed consolidated balance sheets.

Inventories

Inventories	9 Months Ended
	Oct. 31, 2024
Inventory Disclosure [Abstract]
Inventories	3. Inventories Inventories at October 31, 2024 and January 31, 2024 consisted of the following: As of October 31, 2024 January 31, 2024 (in thousands) Work-in-progress $ 22,943 $ 18,933 Finished goods 13,649 10,110 Total $ 36,592 $ 29,043

Property and Equipment, Net

Property and Equipment, Net	9 Months Ended
	Oct. 31, 2024
Property, Plant and Equipment [Abstract]
Property and Equipment, Net	4. Property and Equipment, Net Depreciation expense was approximately $ 1.2 million and $ 1.2 million for the three months ended October 31, 2024 and 2023, respectively, and was approximately $ 3.6 million and $ 3.5 million for the nine months ended October 31, 2024 and 2023, respectively. Property and equipment at October 31, 2024 and January 31, 2024 consisted of the following: As of October 31, 2024 January 31, 2024 (in thousands) Computer hardware and software $ 25,732 $ 23,518 Tools and equipment 8,710 8,564 Furniture and fixtures 1,353 1,351 Leasehold improvements 3,452 3,440 Construction in progress 264 166 39,511 37,039 Less: accumulated depreciation and amortization ( 29,827 ) ( 26,600 ) Total property and equipment, net $ 9,684 $ 10,439

Goodwill and Intangible Assets,

Goodwill and Intangible Assets, Net	9 Months Ended
	Oct. 31, 2024
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Intangible Assets, Net	5. Goodwill and Intangible Assets, Net Goodwill represents the excess of the purchase price over the fair value of net tangible and identifiable intangible assets acquired in a business combination. Intangible assets primarily consist of software licenses as well as developed technology, customer relationships and trade name that were acquired from business combinations. The Company enters into certain software license agreements with third parties from time-to-time. The software licenses consist of noncancelable on-premise internal-use software and software with alternative use that is to be sold, leased or otherwise marketed as part of a product. The licenses have been capitalized as intangible assets, and the corresponding future payments have been recorded as liabilities at net present value. As of October 31, 2024, software license liabilities of approximately $ 8.2 million were recorded in accrued and other current liabilities and approximately $ 2.0 million were recorded in other long-term liabilities in the condensed consolidated balance sheets. The components of intangible assets as of October 31, 2024 and January 31, 2024 were as follows: As of October 31, 2024 As of January 31, 2024 Gross Carrying Amount Accumulated Amortization Net Carrying Amount Gross Carrying Amount Accumulated Amortization Net Carrying Amount (in thousands) Software licenses $ 41,946 $ ( 19,181 ) $ 22,765 $ 41,329 $ ( 12,029 ) $ 29,300 Developed technology 21,200 ( 9,232 ) 11,968 21,200 ( 6,961 ) 14,239 Customer relationships 13,200 ( 4,400 ) 8,800 13,200 ( 3,300 ) 9,900 Trade name 2,500 ( 1,071 ) 1,429 2,500 ( 803 ) 1,697 Total intangible assets, net $ 78,846 $ ( 33,884 ) $ 44,962 $ 78,229 $ ( 23,093 ) $ 55,136 The amortization expense associated with software licenses was approximately $ 3.1 million and $ 3.1 million for the three months ended October 31, 2024 and 2023, respectively, and was approximately $ 9.1 million and $ 8.5 million for the nine months ended October 31, 2024 and 2023, respectively. The amortization expense associated with acquisition-related intangible assets, including developed technology, customer relationships and trade name, was approximately $ 1.2 million and $ 1.2 million for the three months ended October 31, 2024 and 2023, respectively, and was approximately $ 3.6 million and $ 3.6 million for the nine months ended October 31, 2024 and 2023, respectively. As of October 31, 2024, the Company has not commenced amortization with respect to approximately $ 1.1 million of software licenses with alternative uses that are to be sold, leased or otherwise marketed as part of products. Once the associated products are available for general release to customers, the Company will commence amortization on a product-by-product basis over the remaining estimated economic life of the products. The expected future amortization expense related to the intangible assets as of October 31, 2024 is as follows: As of October 31, 2024 Fiscal Year (in thousands) 2025 (3 months remaining) $ 4,105 2026 13,517 2027 7,818 2028 6,181 2029 5,888 Thereafter 7,453 Total future amortization expenses: $ 44,962 Goodwill and intangible assets are tested for impairment at least annually, in the fourth fiscal quarter, or more frequently if events or changes in circumstances indicate that they may be impaired. There were no goodwill and intangible asset impairments for the three and nine months ended October 31, 2024 and 2023, respectively.

Accrued and Other Current Liabi

Accrued and Other Current Liabilities	9 Months Ended
	Oct. 31, 2024
Payables and Accruals [Abstract]
Accrued and Other Current Liabilities	6. Accrued and Other Current Liabilities Accrued and other current liabilities at October 31, 2024 and January 31, 2024 consisted of the following: As of October 31, 2024 January 31, 2024 (in thousands) Accrued employee compensation $ 21,384 $ 16,610 Accrued product development costs 38,574 18,290 Software license liabilities, current 8,222 8,161 Other accrued liabilities 4,794 5,537 Total accrued and other current liabilities $ 72,974 $ 48,598 The timing of SoC development and invoicing from outside foundries usually results in the fluctuation of accrued product development costs. The accrued employee compensation primarily consists of accrued payroll and accrued employee benefits, as well as employee stock purchase plan withholding. For the accrued employee compensation as of January 31, 2024, approximately $ 4.1 million of annual bonus was paid in the first quarter of fiscal year 2025, of which $ 1.1 million was paid in cash and $ 3.0 million was settled with fully vested restricted stock units.

Leases

Leases	9 Months Ended
	Oct. 31, 2024
Leases [Abstract]
Leases	7. Leases During the nine months ended October 31, 2024, the Company extended its existing Shanghai office lease for an additional 36 months beginning December 1, 2024 to November 30, 2027 and extended its existing Shenzhen office lease for an additional 28 months beginning October 1, 2024 to January 31, 2027 . The Company also extended the lease for its Italy office for an additional 22 months beginning July 1, 2024 to April 30, 2026 and a facility lease in Santa Clara, California for an additional 24 months beginning October 1, 2024 to September 30, 2026 . An aggregate of approximately $ 3.5 million of additional operating lease right-of-use assets and corresponding lease liabilities were recorded in the condensed consolidated balance sheets as a result of these lease extensions. The operating lease expense was approximately $ 0.9 million and $ 1.0 million for the three months ended October 31, 2024 and 2023, respectively, and was approximately $ 2.9 million and $ 2.8 million for the nine months ended October 31, 2024 and 2023, respectively. The Company's short-term leases and finance leases were not material as of October 31, 2024 and January 31, 2024, respectively. Supplemental cash flow information related to the operating leases is as follows: Three Months Ended October 31, Nine Months Ended October 31, 2024 2023 2024 2023 (in thousands) Cash paid for operating leases included in operating cash flows $ 950 $ 947 $ 2,937 $ 2,940 Supplemental non-cash information related to lease liabilities arising from obtaining right-of-use assets $ 24 $ 51 $ 91 $ 171 Leased assets obtained in exchange for operating lease liabilities arising from lease modifications $ 141 $ — $ 3,476 $ — As of October 31, 2024, the weighted average remaining lease term is 2.19 years, and the weighted average discount rate is 3.71 percent. Future minimum lease payments for the lease liabilities are as follows: As of October 31, 2024 Fiscal Year (in thousands) 2025 (3 months remaining) $ 850 2026 2,907 2027 1,602 2028 799 2029 — Thereafter — Total future annual minimum lease payments 6,158 Less: interest ( 191 ) Total lease liabilities $ 5,967

Deferred Revenue

Deferred Revenue	9 Months Ended
	Oct. 31, 2024
Deferred Revenue [Abstract]
Deferred Revenue	8. Deferred Revenue Deferred revenue is primarily related to nonrecurring engineering charges that are either invoiced or paid but for which the related performance obligations are not yet satisfied, as well as, for product shipments, a portion of the transaction price that exceeds the weighted average selling price for products sold to date under tiered-pricing contracts that contain material rights. During the nine months ended October 31, 2024 and 2023, the amount recognized as revenue that was included in the deferred revenue balance at the end of prior fiscal year was approximately $ 0.8 million and $ 1.2 million, respectively. As of October 31, 2024, the amount of remaining unsatisfied performance obligations on contracts, primarily consisting of product purchase orders and nonrecurring engineering service agreements with original contract duration of more than one year , was approximately $ 12.4 million, of which approximately 97 % is expected to be recognized within the next 12 months . This does not include amounts which have an original expected contract duration of one year or less.

Other Long-Term Liabilities

Other Long-Term Liabilities	9 Months Ended
	Oct. 31, 2024
Other Liabilities Disclosure [Abstract]
Other Long-Term Liabilities	9. Other Long-Term Liabilities Other long-term liabilities at October 31, 2024 and January 31, 2024 consisted of the following: As of October 31, 2024 January 31, 2024 (in thousands) Unrecognized tax benefits, including interest $ 3,974 $ 3,762 Deferred tax liabilities 855 855 Software license liabilities, non-current 2,021 8,288 Other long-term liabilities 58 4 Total other long-term liabilities $ 6,908 $ 12,909

Capital Stock

Capital Stock	9 Months Ended
	Oct. 31, 2024
Equity [Abstract]
Capital Stock	10. Capital Stock Preference shares There were no preference shares issued and outstanding as of October 31, 2024 and January 31, 2024, respectively. Ordinary shares In the nine months ended October 31, 2024, the Company added 994,543 shares to the ordinary shares reserved for issuance, pursuant to an “evergreen” provision contained in the Amended and Restated 2012 Employee Stock Purchase Plan, or ESPP. Pursuant to such provision, for each fiscal year, the number of ordinary shares reserved for issuance under the ESPP is automatically increased by a number equal to the lesser of (i) 1,500,000 ordinary shares, (ii) one and one quarter percent ( 1.25 %) of the aggregate number of ordinary shares outstanding on February 1st of each fiscal year, or (iii) an amount determined by the Company’s Board of Directors or a duly authorized committee of the Board of Directors. In the second quarter of fiscal year 2025, the Company's shareholders approved to add an additional 1,750,000 shares to the ordinary shares reserved for issuance under the Amended and Restated 2021 Equity Incentive Plan, or 2021 EIP. Subject to adjustments upon changes in capitalization as provided under the 2021 EIP, the maximum aggregate number of ordinary shares that may be subject to awards and issued under the 2021 EIP will be equal to (a) 3,100,000 shares plus (i) any shares subject to awards granted under the Company’s 2012 Equity Incentive Plan (the “Prior Plan”) that, after the date the Prior Plan was terminated, are cancelled, expire or otherwise terminate without having been exercised in full or are forfeited to or repurchased by the Company due to failure to vest, and (ii) any shares that, as of immediately prior to the termination of the Prior Plan, were reserved but not issued pursuant to any awards granted under the Prior Plan and are not subject to any awards thereunder, with the maximum number of ordinary shares to be added to the 2021 EIP pursuant to clauses (i) and (ii) equal to 6,834,208 shares . As of October 31, 2024 and January 31, 2024, the following ordinary shares were reserved for future issuance under the Company’s equity plans and employee stock purchase plan: As of October 31, 2024 January 31, 2024 Shares reserved for options, restricted stock and 5,284,821 4,492,705 Shares reserved for employee stock purchase plan 3,636,591 2,834,384 Share repurchase program In the second quarter of fiscal year 2025, the Company ’ s Board of Directors approved an extension of the Company's existing share repurchase program for an additional twelve months through June 30, 2025 . There were no ordinary shares repurchased in the nine months ended October 31, 2024. As of October 31, 2024, there was approximately $ 49.0 million available for repurchases under the current repurchase program through June 30, 2025. Repurchases may be made from time-to-time through open market purchases, 10b5-1 plans or privately negotiated transactions subject to market conditions, applicable legal requirements and other relevant factors. The repurchase program does not obligate the Company to acquire any particular amount of ordinary shares, and it may be suspended at any time at the Company’s discretion. The repurchase program is funded using the Company’s working capital and any repurchased shares are recorded as authorized but unissued shares.

Stock-based Compensation

Stock-based Compensation	9 Months Ended
	Oct. 31, 2024
Share-Based Payment Arrangement [Abstract]
Stock-based Compensation	11. Stock-based Compensation The following table presents the classification of stock-based compensation for the periods indicated: Three Months Ended October 31, Nine Months Ended October 31, 2024 2023 2024 2023 (in thousands) Stock-based compensation: Cost of revenue $ 899 $ 868 $ 2,339 $ 2,694 Research and development 18,637 17,898 54,653 54,809 Selling, general and administrative 7,311 8,643 23,503 25,293 Total stock-based compensation $ 26,847 $ 27,409 $ 80,495 $ 82,796 As of October 31, 2024, approximately $ 4.9 million of stock-based compensation expense was accrued in accrued and other current liabilities in the condensed consolidated balance sheets. Total unrecognized compensation cost related to unvested stock options at October 31, 2024 was $ 2.9 million and is expected to be recognized over a weighted-average period of 0.58 years. Total unrecognized compensation cost related to unvested restricted stock units at October 31, 2024 was approximately $ 176.9 million and is expected to be recognized over a weighted-average period of 2.55 years. The following table sets forth the weighted-average assumptions used to estimate the fair value of employee stock purchase plan awards for the periods indicated: Three Months Ended October 31, Nine Months Ended October 31, 2024 2023 2024 2023 Employee stock purchase plan awards: Volatility 56 % 54 % 47 % 56 % Risk-free interest rate 4.55 % 5.49 % 4.97 % 5.11 % Expected term (years) 0.5 0.5 0.5 0.5 Dividend yield 0 % 0 % 0 % 0 % The following table summarizes stock option activities for the period indicated: Options Outstanding Weighted- Total Intrinsic Average Weighted- Value Of Remaining Aggregate Weighted- Average Options Contractual Intrinsic Average Grant-date Exercised Term Value Shares Exercise Price Fair Value (in thousands) (in years) (in thousands) Outstanding at January 31, 2024 373,318 $ 46.39 Exercised ( 105,890 ) 37.59 $ 1,705 Forfeited ( 63 ) 111.50 Expired ( 1,425 ) 50.93 Outstanding at October 31, 2024 265,940 49.86 3.64 $ 2,883 Exercisable at October 31, 2024 246,289 $ 51.26 3.45 $ 2,377 The intrinsic value of options outstanding and exercisable is calculated based on the difference between the fair market value of the Company’s ordinary shares on the reporting date and the exercise price. The closing price of the Company’s ordinary shares on October 31, 2024 was $ 56.19 , as reported by The Nasdaq Global Select Market. The intrinsic value of exercised options is calculated based on the difference between the fair market value of the Company’s ordinary shares on the exercise date and the exercise price. The following table summarizes restricted stock unit activities for the period indicated: Weighted- Average Grant-Date Shares Fair Value Unvested at January 31, 2024 2,432,640 $ 82.54 Granted 1,431,816 62.12 Vested ( 851,932 ) 75.81 Forfeited ( 151,000 ) 118.07 Unvested at October 31, 2024 2,861,524 $ 72.45 As of October 31, 2024, the aggregate intrinsic value of unvested restricted stock units was $ 160.8 million.

Net Loss Per Ordinary Share

Net Loss Per Ordinary Share	9 Months Ended
	Oct. 31, 2024
Earnings Per Share [Abstract]
Net Loss Per Ordinary Share	12. Net Loss Per Ordinary Share The following table sets forth the computation of basic and diluted loss per ordinary share for the periods indicated: Three Months Ended October 31, Nine Months Ended October 31, 2024 2023 2024 2023 (in thousands, except share and per share data) Numerator: Net loss $ ( 24,071 ) $ ( 41,710 ) $ ( 96,892 ) $ ( 108,810 ) Denominator: Weighted-average ordinary shares - basic 41,479,459 40,053,251 41,128,068 39,710,248 Weighted-average ordinary shares - diluted 41,479,459 40,053,251 41,128,068 39,710,248 Net loss per ordinary share: Basic $ ( 0.58 ) $ ( 1.04 ) $ ( 2.36 ) $ ( 2.74 ) Diluted $ ( 0.58 ) $ ( 1.04 ) $ ( 2.36 ) $ ( 2.74 ) The following weighted-average potentially dilutive securities were excluded from the computation of diluted net loss per ordinary share as their effect would have been antidilutive: Three Months Ended October 31, Nine Months Ended October 31, 2024 2023 2024 2023 Options to purchase ordinary shares 190,382 214,595 205,214 242,277 Restricted stock units 2,272,057 1,560,921 2,028,574 1,374,705 Employee stock purchase plan 15,209 17,373 11,512 11,649 2,477,648 1,792,889 2,245,300 1,628,631

Income Taxes

Income Taxes	9 Months Ended
	Oct. 31, 2024
Income Tax Disclosure [Abstract]
Income Taxes	13. Income Taxes The following table provides details of income taxes for the periods indicated: Three Months Ended October 31, Nine Months Ended October 31, 2024 2023 2024 2023 (in thousands) Loss before income taxes $ ( 23,419 ) $ ( 40,065 ) $ ( 94,735 ) $ ( 108,923 ) Provision (benefit) for income taxes 652 1,645 2,157 ( 113 ) Effective tax rate ( 2.8 )% ( 4.1 )% ( 2.3 )% 0.1 % The Company recorded an expense for income taxes of $ 0.7 million and $ 2.2 million for the three and nine months ended October 31, 2024, respectively. The Company recorded an expense for income taxes of $ 1.6 million for the three months ended October 31, 2023 and a benefit for income taxes of $ 0.1 million for the nine months ended October 31, 2023, respectively. The decrease in income tax expense for the three months ended October 31, 2024, as compared to the same period in the prior fiscal year, was primarily due to a decrease in the proportion of profits generated in higher tax jurisdictions. The increase in income tax expense for the nine months ended October 31, 2024, as compared to the same period in the prior fiscal year, was primarily due to tax benefit from the release of $ 3.6 million of valuation allowance on the deferred tax assets of Oculii Corp, or Oculii, in the second quarter of the prior fiscal year that did not recur in the current fiscal year. The Company files federal and state income tax returns in the United States and in various foreign jurisdictions. The Company’s fiscal years 2021 through 2024 are generally open and subject to potential examination by U.S. federal tax authorities. The Company’s fiscal years 2020 through 2024 are generally open and subject to potential examination by state tax authorities. The Company’s fiscal years 2017 to 2024 remain open to examination by foreign tax authorities. Fiscal years outside of the normal statute of limitations remain open to audit by tax authorities due to tax attributes generated in those earlier years, which have been carried forward and may be audited in subsequent years when utilized. The Company regularly assesses the likelihood of adverse outcomes resulting from potential tax examinations to determine the adequacy of its provision for income taxes. These assessments can require considerable estimates and judgments. As of October 31, 2024, the gross amount of unrecognized tax benefits was approximately $ 23.8 million. If the estimates of income tax liabilities prove to be less than the ultimate assessment, then a further charge to expense could be required. If events occur, and the payment of these amounts ultimately proves to be unnecessary, the reversal of the liabilities could result in tax benefits being recognized in the period in which the Company determines the liabilities are no longer necessary. It is reasonably possible that within the next 12 months the Company's unrecognized tax benefits could potentially be reduced by up to $ 9.0 million.

Commitments and Contingencies

Commitments and Contingencies	9 Months Ended
	Oct. 31, 2024
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	14. Commitments and Contingencies Contract Manufacturer Commitments The Company’s components and products are procured and built by independent contract manufacturers based on sales forecasts. These forecasts include estimates of future demand, historical trends, analysis of sales and marketing activities, and adjustment of overall market conditions. The Company regularly issues purchase orders to independent contract manufacturers which are cancelable upon agreement between the Company and third-party manufacturers. These manufacturing purchase commitments typically provide the Company with flexibility to cancel, reschedule or adjust requirements based upon business needs but the Company may incur certain costs depending on the production stage of the products. As of October 31, 2024 and January 31, 2024, total manufacturing purchase commitments were approximately $ 51.4 million and $ 30.7 million, respectively. The Company also reviews and assesses the need for any expected loss liabilities on quarterly basis for all products that it does not expect to sell for which it has committed purchases from suppliers and records the liabilities in accrued and other current liabilities in the condensed consolidated balance sheets. There were no material loss liabilities recorded in the condensed consolidated balance sheets from adverse purchase commitments as of October 31, 2024 and January 31, 2024. Other Commitments During fiscal year 2025, the Company entered into a noncancellable service contract with a third-party for its IT infrastructure service and committed to purchase a noncancelable on-premise internal-use software license for product design. As of October 31, 2024, the total commitments for the service and license were approximately $ 8.0 million. Indemnification The Company, from time to time, in the normal course of business, indemnifies certain vendors with whom it enters into contractual relationships. The Company has agreed to hold the other party harmless against third-party claims in connection with the Company’s future products. The Company also indemnifies certain customers against third-party claims related to certain intellectual property and product liability matters. It is not possible to determine the maximum potential amount of liability under these indemnification obligations due to the limited history of prior indemnification claims and the unique facts and circumstances that are likely to be involved in each particular claim. The Company has no t made payments under these obligations as of October 31, 2024, and no liabilities have been recorded for these obligations in the condensed consolidated balance sheets as of October 31, 2024 and January 31, 2024, respectively. Other Matters From time to time, the Company is subject to commercial disputes, employment issues, intellectual property claims and litigation, in the ordinary course of its business. Although the ultimate disposition of asserted claims cannot be predicted with certainty, it is the Company’s belief that the outcome of any such claims, either individually or on a combined basis, will not have a material adverse effect on its consolidated financial position. The results of any litigation cannot be predicted with certainty, and regardless of the outcome, litigation can have an adverse impact on the Company because of defense and settlement costs, diversion of management resources, and other factors. As of October 31, 2024 and January 31, 2024, there were no accruals for contingent liabilities related to such matters recorded in the condensed consolidated balance sheets.

Segment Reporting

Segment Reporting	9 Months Ended
	Oct. 31, 2024
Segment Reporting [Abstract]
Segment Reporting	15. Segment Reporting The Company operates in one operating and reporting segment related to the development and sales of low-power, HD, Ultra HD video compression, image processing and AI computer vision solutions. The Chief Executive Officer of the Company has been identified as the Chief Operating Decision Maker (the CODM) and manages the Company’s operations as a whole. For the purpose of evaluating financial performance and allocating resources, the CODM reviews financial information presented on a consolidated basis accompanied by information by customer and geographic region. Geographic Revenue The following table sets forth the Company’s revenue by geographic region based on bill-to location for the periods indicated. Three Months Ended October 31, Nine Months Ended October 31, 2024 2023 2024 2023 (in thousands) Taiwan $ 54,612 $ 27,179 $ 128,127 $ 91,295 Asia Pacific 15,733 14,300 42,103 45,378 Europe 5,991 2,869 15,934 9,058 North America other than United States 5,756 5,032 12,033 24,407 United States 561 1,215 2,653 4,720 Total revenue $ 82,653 $ 50,595 $ 200,850 $ 174,858 Substantially all of the Company’s property and equipment were located in the Asia Pacific region, United States and Europe. As of October 31, 2024, the net amount of these fixed assets located in these regions was approximately $ 4.4 million, $ 4.2 million and $ 1.1 million, respectively. As of January 31, 2024, the net amount of these fixed assets located in these regions was approximately $ 5.3 million, $ 3.9 million and $ 1.2 million, respectively. Major Customers In the current fiscal year, the customers representing 10% or more of revenue were WT and Chicony, which accounted for approximately 66.1 % and 10.7 % of total revenue for the three months ended October 31, 2024, respectively, and accounted for approximately 63.8 % and 10.2 % of total revenue for the nine months ended October 31, 2024, respectively. In the prior fiscal year, for the three months ended October 31, 2023, the customers representing 10% or more of revenue were WT, Hakuto and Chicony, which accounted for approximately 53.7 %, 12.0 % and 11.7 % of total revenue, respectively. For the nine months ended October 31, 2023, the customers representing 10% or more of revenue were WT and Chicony, which accounted for approximately 52.2 % and 13.9 % of total revenue, respectively. Accounts receivable with WT and Chicony were approximately $ 16.8 million and $ 9.4 million as of October 31, 2024, respectively. Accounts receivable with WT and Chicony were approximately $ 10.3 million and $ 7.0 million as of January 31, 2024, respectively.

Organization and Summary of S_2

Organization and Summary of Significant Accounting Policies (Policies)	9 Months Ended
	Oct. 31, 2024
Accounting Policies [Abstract]
Organization	Organization Ambarella, Inc. (the Company) was incorporated in the Cayman Islands on January 15, 2004. The Company is a leading developer of low-power semiconductor solutions offering high-definition (HD) and Ultra HD compression, advanced image signal processing, and powerful artificial intelligence (AI) processing. The Company combines its processor design capabilities with its expertise in video and image processing, algorithms and software to provide a technology platform that is designed to be easily scalable across multiple applications and enable rapid and efficient product development. The Company’s system-on-a-chip, or SoC, designs fully integrate high-definition video processing, image processing, AI computer vision algorithms, audio processing and system functions onto a single chip. These low power SoCs deliver exceptional video and image quality and can extract valuable data from high-resolution video and radar streams. The Company is currently addressing a broad range of human and computer vision applications, including video security, advanced driver assistance systems (ADAS), electronic mirrors, drive recorders, driver/cabin monitoring systems, autonomous driving, and industrial and robotic applications. The Company sells its solutions to leading original equipment manufacturers, or OEMs, who include the Company’s SoCs in their products, and original design manufacturers, or ODMs, who include the Company’s SoCs in the products that they supply to OEMs, globally.
Basis of Presentation	Basis of Presentation The accompanying unaudited condensed consolidated financial statements have been prepared by the Company in accordance with the instructions to Form 10-Q pursuant to the rules and regulations of the Securities and Exchange Commission (SEC) and, therefore, do not include all information and notes normally provided in audited financial statements. The accounting policies are described in the “Notes to Consolidated Financial Statements” in the Annual Report on Form 10-K for the 2024 fiscal year filed with the SEC on March 29, 2024 (the Form 10-K) and updated, as necessary, in this Form 10-Q. The year-end condensed consolidated balance sheet data presented for comparative purposes was derived from audited financial statements. In the opinion of management, all adjustments (consisting of normal recurring accruals and adjustments) considered necessary for a fair statement have been included. The results of operations for any interim period are not necessarily indicative of, nor comparable to, the results of operations for any other interim period or for a full fiscal year. These unaudited condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and related notes contained in the Form 10-K.
Basis of Consolidation	Basis of Consolidation The Company’s fiscal year ends on January 31. The condensed consolidated financial statements of the Company and its subsidiaries have been prepared in conformity with U.S. GAAP. All intercompany transactions and balances have been eliminated upon consolidation.
Concentration of Risk	Concentration of Risk The Company’s products are manufactured, assembled and tested by third-party contractors located primarily in Asia. The Company does not have long-term agreements with these contractors. A significant disruption in the operations of one or more of these contractors would impact the production of the Company’s products which could have a material adverse effect on its business, financial condition and results of operations. A substantial portion of the Company’s revenue is derived from sales through its two major distributors and one ODM. WT Microelectronics Co., Ltd., formerly Wintech Microelectronics Co., Ltd., or WT, serves as a non-exclusive sales representative and fulfillment partner in Asia other than Japan, and Hakuto Co., Ltd., or Hakuto, serves as a Japanese distributor. Chicony Electronics Co., Ltd., or Chicony, is an ODM that manufactures devices incorporating the Company’s solutions on behalf of multiple end-customers. Termination of the relationships with these customers could result in a temporary or permanent loss of revenue. Furthermore, any credit issues from these customers could impair their abilities to make timely payment to the Company. See Note 15 for additional information regarding revenue and credit concentration with these customers. Financial instruments that potentially subject the Company to concentrations of credit risk consist primarily of cash, cash equivalents, marketable debt securities and accounts receivable. The Company maintains its cash primarily in checking accounts with reputable financial institutions. Cash deposits held with these financial institutions may exceed the amount of insurance provided on such deposits. The Company has not experienced any losses on deposits of its cash. In order to limit the exposure of each investment, the cash equivalents and marketable debt securities consist primarily of money market funds, fixed deposit accounts, commercial paper, corporate bonds, asset-backed securities and U.S. government securities which management assesses to be highly liquid. The Company does not hold or issue financial instruments for trading purposes. The Company performs ongoing credit evaluation of its customers and adjusts credit limits based upon payment history and customers’ credit worthiness. The Company regularly monitors collections and payments from its customers.
Restricted Cash	Restricted Cash Amounts included in restricted cash represent those required to be set aside to secure certain transactions in a foreign entity. As of October 31, 2024 and January 31, 2024, restricted cash was immaterial, respectively. The following table presents cash, cash equivalents and restricted cash reported on the condensed consolidated balance sheets, and the totals are presented on the condensed consolidated statements of cash flows: As of October 31, January 31, October 31, January 31, (in thousands) Cash and cash equivalents $ 127,122 $ 144,914 $ 143,787 $ 113,541 Restricted cash 7 7 7 8 Total as presented in the condensed consolidated statements of cash flows $ 127,129 $ 144,921 $ 143,794 $ 113,549
Recent Accounting Pronouncements	Recent Accounting Pronouncements In November 2024, the Financial Accounting Standards Board (FASB) issued Accounting Standard Update (ASU) 2024-03, Income Statement - Reporting Comprehensive Income - Expense Disaggregation Disclosures (Subtopic 220-40): Disaggregation of Income Statement Expenses . This new guidance requires public entities to provide disaggregated disclosures, in the notes to the financial statements, of certain categories of expenses that are included in expense line items on the face of income statement. The ASU may be applied prospectively or retrospectively and is effective for fiscal years beginning after December 15, 2026 and for interim periods beginning after December 15, 2027. Early adoption is permitted. The Company is currently evaluating the impact of adoption of this new guidance on its consolidated financial statements disclosures.

Organization and Summary of S_3

Organization and Summary of Significant Accounting Policies (Tables)	9 Months Ended
	Oct. 31, 2024
Accounting Policies [Abstract]
Schedule of Cash, Cash Equivalents and Restricted Cash	The following table presents cash, cash equivalents and restricted cash reported on the condensed consolidated balance sheets, and the totals are presented on the condensed consolidated statements of cash flows: As of October 31, January 31, October 31, January 31, (in thousands) Cash and cash equivalents $ 127,122 $ 144,914 $ 143,787 $ 113,541 Restricted cash 7 7 7 8 Total as presented in the condensed consolidated statements of cash flows $ 127,129 $ 144,921 $ 143,794 $ 113,549

Financial Instruments and Fai_2

Financial Instruments and Fair Value (Tables)	9 Months Ended
	Oct. 31, 2024
Investments, All Other Investments [Abstract]
Schedule of Available-for-Sale Securities at Fair Value	All of the money market funds and debt security investments are classified as available-for-sale securities and reported at fair value in the condensed consolidated balance sheets as follows: As of October 31, 2024 Amortized Cost Unrealized Gains Unrealized Losses Fair Value (in thousands) Money market funds $ 82 $ — $ — $ 82 Commercial paper — — — — Corporate bonds 53,537 134 ( 148 ) 53,523 Asset-backed securities 20,688 15 ( 91 ) 20,612 U.S. government securities 25,474 — ( 207 ) 25,267 Total cash equivalents and marketable debt securities $ 99,781 $ 149 $ ( 446 ) $ 99,484 As of January 31, 2024 Amortized Cost Unrealized Gains Unrealized Losses Fair Value (in thousands) Money market funds $ 296 $ — $ — $ 296 Commercial paper 30,806 — — 30,806 Corporate bonds 38,867 180 ( 135 ) 38,912 Asset-backed securities 15,212 14 ( 96 ) 15,130 U.S. government securities 21,118 — ( 146 ) 20,972 Total cash equivalents and marketable debt securities $ 106,299 $ 194 $ ( 377 ) $ 106,116
Schedule of Available-for-Sale Securities Unrealized Loss Position at Fair Value	The following table provides the breakdown of unrealized losses from available-for-sale securities as of October 31, 2024 and January 31, 2024, respectively, aggregated by investment category and length of time that individual securities have been in a continuous loss position: As of October 31, 2024 Less than 12 Months 12 Months or Greater Total Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses (in thousands) Corporate bonds $ 23,362 $ ( 126 ) $ 5,103 $ ( 22 ) $ 28,465 $ ( 148 ) Asset-backed securities 9,132 ( 62 ) 4,998 ( 29 ) 14,130 ( 91 ) U.S. government securities 20,486 ( 181 ) 4,782 ( 26 ) 25,268 ( 207 ) Total marketable debt securities at loss position $ 52,980 $ ( 369 ) $ 14,883 $ ( 77 ) $ 67,863 $ ( 446 ) As of January 31, 2024 Less than 12 Months 12 Months or Greater Total Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses (in thousands) Corporate bonds $ 9,050 $ ( 19 ) $ 8,363 $ ( 116 ) $ 17,413 $ ( 135 ) Asset-backed securities 4,821 ( 15 ) 6,289 ( 81 ) 11,110 ( 96 ) U.S. government securities 15,020 ( 65 ) 5,952 ( 81 ) 20,972 ( 146 ) Total marketable debt securities at loss position $ 28,891 $ ( 99 ) $ 20,604 $ ( 278 ) $ 49,495 $ ( 377 )
Schedule of Cash Equivalents and Marketable Debt Securities	As of October 31, 2024 January 31, 2024 (in thousands) Included in cash equivalents $ 82 $ 31,103 Included in marketable debt securities 99,402 75,013 Total cash equivalents and marketable debt securities $ 99,484 $ 106,116
Summary of Contractual Maturities of Available-for-sale Securities	The contractual maturities of available-for-sale securities at October 31, 2024 and January 31, 2024 were as follows: As of October 31, 2024 January 31, 2024 (in thousands) Due within one year $ 30,384 $ 50,216 Due in 1 - 5 years 69,100 55,900 Total cash equivalents and marketable debt securities $ 99,484 $ 106,116
Schedule of Fair Value of Available-for-sale Securities Measured on Recurring Basis	The following tables present the fair value of available-for-sale securities measured on a recurring basis as of October 31, 2024 and January 31, 2024, respectively: As of October 31, 2024 Total Level 1 Level 2 Level 3 (in thousands) Money market funds $ 82 $ 82 $ — $ — Commercial paper — — — — Corporate bonds 53,523 — 53,523 — Asset-backed securities 20,612 — 20,612 — U.S. government securities 25,267 — 25,267 — Total cash equivalents and marketable debt securities $ 99,484 $ 82 $ 99,402 $ — As of January 31, 2024 Total Level 1 Level 2 Level 3 (in thousands) Money market funds $ 296 $ 296 $ — $ — Commercial paper 30,806 — 30,806 — Corporate bonds 38,912 — 38,912 — Asset-backed securities 15,130 — 15,130 — U.S. government securities 20,972 — 20,972 — Total cash equivalents and marketable debt securities $ 106,116 $ 296 $ 105,820 $ —

Inventories (Tables)

Inventories (Tables)	9 Months Ended
	Oct. 31, 2024
Inventory Disclosure [Abstract]
Schedule of Inventory	Inventories at October 31, 2024 and January 31, 2024 consisted of the following: As of October 31, 2024 January 31, 2024 (in thousands) Work-in-progress $ 22,943 $ 18,933 Finished goods 13,649 10,110 Total $ 36,592 $ 29,043

Property and Equipment, Net (Ta

Property and Equipment, Net (Tables)	9 Months Ended
	Oct. 31, 2024
Property, Plant and Equipment [Abstract]
Schedule of Property and Equipment	Property and equipment at October 31, 2024 and January 31, 2024 consisted of the following: As of October 31, 2024 January 31, 2024 (in thousands) Computer hardware and software $ 25,732 $ 23,518 Tools and equipment 8,710 8,564 Furniture and fixtures 1,353 1,351 Leasehold improvements 3,452 3,440 Construction in progress 264 166 39,511 37,039 Less: accumulated depreciation and amortization ( 29,827 ) ( 26,600 ) Total property and equipment, net $ 9,684 $ 10,439

Goodwill and Intangible Asset_2

Goodwill and Intangible Assets, Net (Tables)	9 Months Ended
	Oct. 31, 2024
Goodwill and Intangible Assets Disclosure [Abstract]
Summary of Components of Intangible Assets	The components of intangible assets as of October 31, 2024 and January 31, 2024 were as follows: As of October 31, 2024 As of January 31, 2024 Gross Carrying Amount Accumulated Amortization Net Carrying Amount Gross Carrying Amount Accumulated Amortization Net Carrying Amount (in thousands) Software licenses $ 41,946 $ ( 19,181 ) $ 22,765 $ 41,329 $ ( 12,029 ) $ 29,300 Developed technology 21,200 ( 9,232 ) 11,968 21,200 ( 6,961 ) 14,239 Customer relationships 13,200 ( 4,400 ) 8,800 13,200 ( 3,300 ) 9,900 Trade name 2,500 ( 1,071 ) 1,429 2,500 ( 803 ) 1,697 Total intangible assets, net $ 78,846 $ ( 33,884 ) $ 44,962 $ 78,229 $ ( 23,093 ) $ 55,136
Summary of Expected Future Amortization Expense Related to Intangible Assets	The expected future amortization expense related to the intangible assets as of October 31, 2024 is as follows: As of October 31, 2024 Fiscal Year (in thousands) 2025 (3 months remaining) $ 4,105 2026 13,517 2027 7,818 2028 6,181 2029 5,888 Thereafter 7,453 Total future amortization expenses: $ 44,962

Accrued and Other Current Lia_2

Accrued and Other Current Liabilities (Tables)	9 Months Ended
	Oct. 31, 2024
Payables and Accruals [Abstract]
Schedule of Accrued and Other Current Liabilities	Accrued and other current liabilities at October 31, 2024 and January 31, 2024 consisted of the following: As of October 31, 2024 January 31, 2024 (in thousands) Accrued employee compensation $ 21,384 $ 16,610 Accrued product development costs 38,574 18,290 Software license liabilities, current 8,222 8,161 Other accrued liabilities 4,794 5,537 Total accrued and other current liabilities $ 72,974 $ 48,598

Leases (Tables)

Leases (Tables)	9 Months Ended
	Oct. 31, 2024
Leases [Abstract]
Schedule of Supplemental Cash Flow Information Related to Operating Leases	Supplemental cash flow information related to the operating leases is as follows: Three Months Ended October 31, Nine Months Ended October 31, 2024 2023 2024 2023 (in thousands) Cash paid for operating leases included in operating cash flows $ 950 $ 947 $ 2,937 $ 2,940 Supplemental non-cash information related to lease liabilities arising from obtaining right-of-use assets $ 24 $ 51 $ 91 $ 171 Leased assets obtained in exchange for operating lease liabilities arising from lease modifications $ 141 $ — $ 3,476 $ —
Schedule of Future Minimum Lease Payments for Lease Liabilities	As of October 31, 2024, the weighted average remaining lease term is 2.19 years, and the weighted average discount rate is 3.71 percent. Future minimum lease payments for the lease liabilities are as follows: As of October 31, 2024 Fiscal Year (in thousands) 2025 (3 months remaining) $ 850 2026 2,907 2027 1,602 2028 799 2029 — Thereafter — Total future annual minimum lease payments 6,158 Less: interest ( 191 ) Total lease liabilities $ 5,967

Other Long-Term Liabilities (Ta

Other Long-Term Liabilities (Tables)	9 Months Ended
	Oct. 31, 2024
Other Liabilities Disclosure [Abstract]
Schedule of Other Long-Term Liabilities	Other long-term liabilities at October 31, 2024 and January 31, 2024 consisted of the following: As of October 31, 2024 January 31, 2024 (in thousands) Unrecognized tax benefits, including interest $ 3,974 $ 3,762 Deferred tax liabilities 855 855 Software license liabilities, non-current 2,021 8,288 Other long-term liabilities 58 4 Total other long-term liabilities $ 6,908 $ 12,909

Capital Stock (Tables)

Capital Stock (Tables)	9 Months Ended
	Oct. 31, 2024
Equity [Abstract]
Schedule of Ordinary Shares Reserved for Future Issuance under Company's Equity Plans and Employee Stock Purchase Plan	As of October 31, 2024 and January 31, 2024, the following ordinary shares were reserved for future issuance under the Company’s equity plans and employee stock purchase plan: As of October 31, 2024 January 31, 2024 Shares reserved for options, restricted stock and 5,284,821 4,492,705 Shares reserved for employee stock purchase plan 3,636,591 2,834,384

Stock-based Compensation (Table

Stock-based Compensation (Tables)	9 Months Ended
	Oct. 31, 2024
Share-Based Payment Arrangement [Abstract]
Classification of Stock-based Compensation	The following table presents the classification of stock-based compensation for the periods indicated: Three Months Ended October 31, Nine Months Ended October 31, 2024 2023 2024 2023 (in thousands) Stock-based compensation: Cost of revenue $ 899 $ 868 $ 2,339 $ 2,694 Research and development 18,637 17,898 54,653 54,809 Selling, general and administrative 7,311 8,643 23,503 25,293 Total stock-based compensation $ 26,847 $ 27,409 $ 80,495 $ 82,796
Weighted-Average Assumptions Used to Estimate Fair Value	The following table sets forth the weighted-average assumptions used to estimate the fair value of employee stock purchase plan awards for the periods indicated: Three Months Ended October 31, Nine Months Ended October 31, 2024 2023 2024 2023 Employee stock purchase plan awards: Volatility 56 % 54 % 47 % 56 % Risk-free interest rate 4.55 % 5.49 % 4.97 % 5.11 % Expected term (years) 0.5 0.5 0.5 0.5 Dividend yield 0 % 0 % 0 % 0 %
Stock Option Activities	The following table summarizes stock option activities for the period indicated: Options Outstanding Weighted- Total Intrinsic Average Weighted- Value Of Remaining Aggregate Weighted- Average Options Contractual Intrinsic Average Grant-date Exercised Term Value Shares Exercise Price Fair Value (in thousands) (in years) (in thousands) Outstanding at January 31, 2024 373,318 $ 46.39 Exercised ( 105,890 ) 37.59 $ 1,705 Forfeited ( 63 ) 111.50 Expired ( 1,425 ) 50.93 Outstanding at October 31, 2024 265,940 49.86 3.64 $ 2,883 Exercisable at October 31, 2024 246,289 $ 51.26 3.45 $ 2,377
Restricted Stock Unit Activities	The following table summarizes restricted stock unit activities for the period indicated: Weighted- Average Grant-Date Shares Fair Value Unvested at January 31, 2024 2,432,640 $ 82.54 Granted 1,431,816 62.12 Vested ( 851,932 ) 75.81 Forfeited ( 151,000 ) 118.07 Unvested at October 31, 2024 2,861,524 $ 72.45

Net Loss Per Ordinary Share (Ta

Net Loss Per Ordinary Share (Tables)	9 Months Ended
	Oct. 31, 2024
Earnings Per Share [Abstract]
Computation of Basic and Diluted Loss Per Ordinary Share	The following table sets forth the computation of basic and diluted loss per ordinary share for the periods indicated: Three Months Ended October 31, Nine Months Ended October 31, 2024 2023 2024 2023 (in thousands, except share and per share data) Numerator: Net loss $ ( 24,071 ) $ ( 41,710 ) $ ( 96,892 ) $ ( 108,810 ) Denominator: Weighted-average ordinary shares - basic 41,479,459 40,053,251 41,128,068 39,710,248 Weighted-average ordinary shares - diluted 41,479,459 40,053,251 41,128,068 39,710,248 Net loss per ordinary share: Basic $ ( 0.58 ) $ ( 1.04 ) $ ( 2.36 ) $ ( 2.74 ) Diluted $ ( 0.58 ) $ ( 1.04 ) $ ( 2.36 ) $ ( 2.74 )
Weighted-Average Potentially Dilutive Securities Excluded from Computation of Diluted Net Loss Per Ordinary Share	The following weighted-average potentially dilutive securities were excluded from the computation of diluted net loss per ordinary share as their effect would have been antidilutive: Three Months Ended October 31, Nine Months Ended October 31, 2024 2023 2024 2023 Options to purchase ordinary shares 190,382 214,595 205,214 242,277 Restricted stock units 2,272,057 1,560,921 2,028,574 1,374,705 Employee stock purchase plan 15,209 17,373 11,512 11,649 2,477,648 1,792,889 2,245,300 1,628,631

Income Taxes (Tables)

Income Taxes (Tables)	9 Months Ended
	Oct. 31, 2024
Income Tax Disclosure [Abstract]
Summary of Income Taxes	The following table provides details of income taxes for the periods indicated: Three Months Ended October 31, Nine Months Ended October 31, 2024 2023 2024 2023 (in thousands) Loss before income taxes $ ( 23,419 ) $ ( 40,065 ) $ ( 94,735 ) $ ( 108,923 ) Provision (benefit) for income taxes 652 1,645 2,157 ( 113 ) Effective tax rate ( 2.8 )% ( 4.1 )% ( 2.3 )% 0.1 %

Segment Reporting (Tables)

Segment Reporting (Tables)	9 Months Ended
	Oct. 31, 2024
Segment Reporting [Abstract]
Company's Revenue by Geographic Region Based on Bill-to Location	The following table sets forth the Company’s revenue by geographic region based on bill-to location for the periods indicated. Three Months Ended October 31, Nine Months Ended October 31, 2024 2023 2024 2023 (in thousands) Taiwan $ 54,612 $ 27,179 $ 128,127 $ 91,295 Asia Pacific 15,733 14,300 42,103 45,378 Europe 5,991 2,869 15,934 9,058 North America other than United States 5,756 5,032 12,033 24,407 United States 561 1,215 2,653 4,720 Total revenue $ 82,653 $ 50,595 $ 200,850 $ 174,858

Organization and Summary of S_4

Organization and Summary of Significant Accounting Policies - Schedule of Cash, Cash Equivalents and Restricted Cash (Detail) - USD ($) $ in Thousands	Oct. 31, 2024	Jan. 31, 2024	Oct. 31, 2023	Jan. 31, 2023
Cash and Cash Equivalents [Abstract]
Cash and cash equivalents	$ 127,122	$ 144,914	$ 143,787	$ 113,541
Restricted cash	7	7	7	8
Total as presented in the condensed consolidated statements of cash flows	$ 127,129	$ 144,921	$ 143,794	$ 113,549

Financial Instruments and Fai_3

Financial Instruments and Fair Value - Schedule of Available-for-Sale Securities at Fair Value (Detail) - USD ($) $ in Thousands	Oct. 31, 2024	Jan. 31, 2024
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	$ 99,781	$ 106,299
Unrealized Gains	149	194
Unrealized Losses	(446)	(377)
Fair Value	99,484	106,116
Money market funds [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	82	296
Unrealized Gains	0	0
Unrealized Losses	0	0
Fair Value	82	296
Commercial paper [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	0	30,806
Unrealized Gains	0	0
Unrealized Losses	0	0
Fair Value	0	30,806
Corporate bonds [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	53,537	38,867
Unrealized Gains	134	180
Unrealized Losses	(148)	(135)
Fair Value	53,523	38,912
Asset-backed securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	20,688	15,212
Unrealized Gains	15	14
Unrealized Losses	(91)	(96)
Fair Value	20,612	15,130
U.S. government securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	25,474	21,118
Unrealized Gains	0	0
Unrealized Losses	(207)	(146)
Fair Value	$ 25,267	$ 20,972

Financial Instruments and Fai_4

Financial Instruments and Fair Value - Schedule of Available-for-Sale Securities Unrealized Loss Position at Fair Value (Detail) - USD ($) $ in Thousands	Oct. 31, 2024	Jan. 31, 2024
Debt Securities, Available-for-Sale, Unrealized Loss Position [Line Items]
Less than 12 Months, Fair Value	$ 52,980	$ 28,891
12 Months or Greater, Fair Value	14,883	20,604
Total, Fair Value	67,863	49,495
Less than 12 Months, Unrealized Losses	(369)	(99)
12 Months or Greater, Unrealized Losses	(77)	(278)
Total, Unrealized Losses	(446)	(377)
Corporate bonds [Member]
Debt Securities, Available-for-Sale, Unrealized Loss Position [Line Items]
Less than 12 Months, Fair Value	23,362	9,050
12 Months or Greater, Fair Value	5,103	8,363
Total, Fair Value	28,465	17,413
Less than 12 Months, Unrealized Losses	(126)	(19)
12 Months or Greater, Unrealized Losses	(22)	(116)
Total, Unrealized Losses	(148)	(135)
Asset-backed securities [Member]
Debt Securities, Available-for-Sale, Unrealized Loss Position [Line Items]
Less than 12 Months, Fair Value	9,132	4,821
12 Months or Greater, Fair Value	4,998	6,289
Total, Fair Value	14,130	11,110
Less than 12 Months, Unrealized Losses	(62)	(15)
12 Months or Greater, Unrealized Losses	(29)	(81)
Total, Unrealized Losses	(91)	(96)
U.S. government securities [Member]
Debt Securities, Available-for-Sale, Unrealized Loss Position [Line Items]
Less than 12 Months, Fair Value	20,486	15,020
12 Months or Greater, Fair Value	4,782	5,952
Total, Fair Value	25,268	20,972
Less than 12 Months, Unrealized Losses	(181)	(65)
12 Months or Greater, Unrealized Losses	(26)	(81)
Total, Unrealized Losses	$ (207)	$ (146)

Financial Instruments and Fai_5

Financial Instruments and Fair Value - Schedule of Cash Equivalents and Marketable Debt Securities (Detail) - USD ($) $ in Thousands	Oct. 31, 2024	Jan. 31, 2024
Schedule of Available-for-sale Securities [Line Items]
Total cash equivalents and marketable debt securities	$ 99,484	$ 106,116
Included in cash equivalents [Member]
Schedule of Available-for-sale Securities [Line Items]
Total cash equivalents and marketable debt securities	82	31,103
Included in marketable debt securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Total cash equivalents and marketable debt securities	$ 99,402	$ 75,013

Financial Instruments and Fai_6

Financial Instruments and Fair Value - Summary of Contractual Maturities of Available-for-sale Securities (Detail) - USD ($) $ in Thousands	Oct. 31, 2024	Jan. 31, 2024
Debt Securities, Available-for-Sale, Fair Value, Fiscal Year Maturity [Abstract]
Due within one year	$ 30,384	$ 50,216
Due in 1 - 5 years	69,100	55,900
Total cash equivalents and marketable debt securities	$ 99,484	$ 106,116

Financial Instruments and Fai_7

Financial Instruments and Fair Value - Additional Information (Detail) - USD ($)	3 Months Ended		9 Months Ended
	Oct. 31, 2024	Oct. 31, 2023	Oct. 31, 2024	Oct. 31, 2023	Jan. 31, 2024	Jan. 31, 2023
Debt Securities, Available-for-Sale [Line Items]
Interest income and realized gains and losses from financial instruments	$ 2,100,000	$ 2,200,000	$ 6,600,000	$ 5,500,000
Carrying value of fixed deposit accounts	127,122,000	143,787,000	127,122,000	143,787,000	$ 144,914,000	$ 113,541,000
Impairment losses on investment	0	$ 1,200,000	0	$ 1,200,000
Non-marketable equity investment	1,200,000		1,200,000		1,200,000
Fixed Deposit Accounts [Member] | Level 1 [Member]
Debt Securities, Available-for-Sale [Line Items]
Carrying value of fixed deposit accounts	$ 3,700,000		$ 3,700,000		$ 7,000,000

Financial Instruments and Fai_8

Financial Instruments and Fair Value - Schedule of Fair Value of Available-for-sale Securities Measured on Recurring Basis (Detail) - USD ($) $ in Thousands	Oct. 31, 2024	Jan. 31, 2024
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total cash equivalents and marketable debt securities	$ 99,484	$ 106,116
Money market funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total cash equivalents and marketable debt securities	82	296
Commercial paper [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total cash equivalents and marketable debt securities	0	30,806
Corporate bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total cash equivalents and marketable debt securities	53,523	38,912
Asset-backed securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total cash equivalents and marketable debt securities	20,612	15,130
U.S. government securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total cash equivalents and marketable debt securities	25,267	20,972
Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total cash equivalents and marketable debt securities	82	296
Level 1 [Member] | Money market funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total cash equivalents and marketable debt securities	82	296
Level 1 [Member] | Commercial paper [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total cash equivalents and marketable debt securities	0	0
Level 1 [Member] | Corporate bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total cash equivalents and marketable debt securities	0	0
Level 1 [Member] | Asset-backed securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total cash equivalents and marketable debt securities	0	0
Level 1 [Member] | U.S. government securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total cash equivalents and marketable debt securities	0	0
Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total cash equivalents and marketable debt securities	99,402	105,820
Level 2 [Member] | Money market funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total cash equivalents and marketable debt securities	0	0
Level 2 [Member] | Commercial paper [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total cash equivalents and marketable debt securities	0	30,806
Level 2 [Member] | Corporate bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total cash equivalents and marketable debt securities	53,523	38,912
Level 2 [Member] | Asset-backed securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total cash equivalents and marketable debt securities	20,612	15,130
Level 2 [Member] | U.S. government securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total cash equivalents and marketable debt securities	25,267	20,972
Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total cash equivalents and marketable debt securities	0	0
Level 3 [Member] | Money market funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total cash equivalents and marketable debt securities	0	0
Level 3 [Member] | Commercial paper [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total cash equivalents and marketable debt securities	0	0
Level 3 [Member] | Corporate bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total cash equivalents and marketable debt securities	0	0
Level 3 [Member] | Asset-backed securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total cash equivalents and marketable debt securities	0	0
Level 3 [Member] | U.S. government securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total cash equivalents and marketable debt securities	$ 0	$ 0

Inventories - Schedule of Inven

Inventories - Schedule of Inventory (Detail) - USD ($) $ in Thousands	Oct. 31, 2024	Jan. 31, 2024
Inventory Disclosure [Abstract]
Work-in-progress	$ 22,943	$ 18,933
Finished goods	13,649	10,110
Total	$ 36,592	$ 29,043

Property and Equipment, Net - A

Property and Equipment, Net - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Oct. 31, 2024	Oct. 31, 2023	Oct. 31, 2024	Oct. 31, 2023
Property, Plant and Equipment [Abstract]
Depreciation of property and equipment	$ 1.2	$ 1.2	$ 3.6	$ 3.5

Property and Equipment, Net - S

Property and Equipment, Net - Schedule of Property and Equipment (Detail) - USD ($) $ in Thousands	Oct. 31, 2024	Jan. 31, 2024
Property Plant And Equipment [Line Items]
Property and equipment, gross	$ 39,511	$ 37,039
Less: accumulated depreciation and amortization	(29,827)	(26,600)
Total property and equipment, net	9,684	10,439
Computer hardware and software [Member]
Property Plant And Equipment [Line Items]
Property and equipment, gross	25,732	23,518
Tools and equipment [Member]
Property Plant And Equipment [Line Items]
Property and equipment, gross	8,710	8,564
Furniture and fixtures [Member]
Property Plant And Equipment [Line Items]
Property and equipment, gross	1,353	1,351
Leasehold improvements [Member]
Property Plant And Equipment [Line Items]
Property and equipment, gross	3,452	3,440
Construction in progress [Member]
Property Plant And Equipment [Line Items]
Property and equipment, gross	$ 264	$ 166

Goodwill and Intangible Asset_3

Goodwill and Intangible Assets, Net - Additional Information (Detail) - USD ($)	3 Months Ended		9 Months Ended
	Oct. 31, 2024	Oct. 31, 2023	Oct. 31, 2024	Oct. 31, 2023	Jan. 31, 2024
Finite Lived Intangible Assets [Line Items]
Liabilities associated with software license at net present value, current	$ 8,222,000		$ 8,222,000		$ 8,161,000
Liabilities associated with software license at net present value, non-current	2,021,000		2,021,000		$ 8,288,000
Unamortized software licenses with alternative uses to be sold, leased or marketed	1,100,000		1,100,000
Impairment of goodwill and intangible assets			0	$ 0
Software licenses [Member]
Finite Lived Intangible Assets [Line Items]
Amortization expense	3,100,000	$ 3,100,000	9,100,000	8,500,000
Acquired Intangible Assets [Member]
Finite Lived Intangible Assets [Line Items]
Amortization expense	$ 1,200,000	$ 1,200,000	$ 3,600,000	$ 3,600,000

Goodwill and Intangible Asset_4

Goodwill and Intangible Assets, Net - Summary of Components of Intangible Assets (Detail) - USD ($) $ in Thousands	Oct. 31, 2024	Jan. 31, 2024
Finite Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 78,846	$ 78,229
Accumulated Amortization	(33,884)	(23,093)
Net Carrying Amount	44,962	55,136
Software licenses [Member]
Finite Lived Intangible Assets [Line Items]
Gross Carrying Amount	41,946	41,329
Accumulated Amortization	(19,181)	(12,029)
Net Carrying Amount	22,765	29,300
Developed technology [Member]
Finite Lived Intangible Assets [Line Items]
Gross Carrying Amount	21,200	21,200
Accumulated Amortization	(9,232)	(6,961)
Net Carrying Amount	11,968	14,239
Customer relationships [Member]
Finite Lived Intangible Assets [Line Items]
Gross Carrying Amount	13,200	13,200
Accumulated Amortization	(4,400)	(3,300)
Net Carrying Amount	8,800	9,900
Trade Name [Member]
Finite Lived Intangible Assets [Line Items]
Gross Carrying Amount	2,500	2,500
Accumulated Amortization	(1,071)	(803)
Net Carrying Amount	$ 1,429	$ 1,697

Goodwill and Intangible Asset_5

Goodwill and Intangible Assets, Net - Summary of Expected Future Amortization Expense Related to Intangible Assets (Detail) - USD ($) $ in Thousands	Oct. 31, 2024	Jan. 31, 2024
Goodwill and Intangible Assets Disclosure [Abstract]
2025 (3 months remaining)	$ 4,105
2026	13,517
2027	7,818
2028	6,181
2029	5,888
Thereafter	7,453
Net Carrying Amount	$ 44,962	$ 55,136

Accrued and Other Current Lia_3

Accrued and Other Current Liabilities - Schedule of Accrued and Other Current Liabilities (Detail) - USD ($) $ in Thousands	Oct. 31, 2024	Jan. 31, 2024
Payables and Accruals [Abstract]
Accrued employee compensation	$ 21,384	$ 16,610
Accrued product development costs	38,574	18,290
Software license liabilities, current	8,222	8,161
Other accrued liabilities	4,794	5,537
Total accrued and other current liabilities	$ 72,974	$ 48,598

Accrued and Other Current Lia_4

Accrued and Other Current Liabilities - Additional Information (Detail) $ in Millions	3 Months Ended
	Apr. 30, 2024 USD ($)
Schedule of Accrued Liabilities [Line Items]
Annual bonus paid	$ 4.1
Cash [Member]
Schedule of Accrued Liabilities [Line Items]
Annual bonus paid	1.1
Restricted stock units [Member]
Schedule of Accrued Liabilities [Line Items]
Annual bonus paid	$ 3

Leases - Additional Information

Leases - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Oct. 31, 2024	Oct. 31, 2023	Oct. 31, 2024	Oct. 31, 2023
Lessee, Lease, Description [Line Items]
Additional operating lease right-of-use assets			$ 3.5
Additional operating lease liabilities			3.5
Operating lease expense	$ 0.9	$ 1	$ 2.9	$ 2.8
Weighted-average remaining lease term - operating leases	2 years 2 months 8 days		2 years 2 months 8 days
Weighted-average discount rate - operating leases	3.71%		3.71%
Shanghai [Member] | Extended Office Lease [Member]
Lessee, Lease, Description [Line Items]
Lease term	36 months		36 months
Lease inception date			Dec. 01, 2024
Expiration date			Nov. 30, 2027
Shenzhen [Member] | Extended Office Lease [Member]
Lessee, Lease, Description [Line Items]
Lease term	28 months		28 months
Lease inception date			Oct. 01, 2024
Expiration date			Jan. 31, 2027
Italy [Member] | Extended Office Lease [Member]
Lessee, Lease, Description [Line Items]
Lease term	22 months		22 months
Lease inception date			Jul. 01, 2024
Expiration date			Apr. 30, 2026
Santa Clara [Member] | Extended Office Lease [Member]
Lessee, Lease, Description [Line Items]
Lease term	24 months		24 months
Lease inception date			Oct. 01, 2024
Expiration date			Sep. 30, 2026

Leases - Schedule of Supplement

Leases - Schedule of Supplemental Cash Flow Information Related to Leases (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 31, 2024	Oct. 31, 2023	Oct. 31, 2024	Oct. 31, 2023
Leases [Abstract]
Cash paid for operating leases included in operating cash flows	$ 950	$ 947	$ 2,937	$ 2,940
Supplemental non-cash information related to lease liabilities arising from obtaining right-of-use assets	24	51	91	171
Leased assets obtained in exchange for operating lease liabilities arising from lease modifications	$ 141	$ 0	$ 3,476	$ 0

Leases - Schedule of Future Min

Leases - Schedule of Future Minimum Lease Payments for Lease Liabilities (Detail) $ in Thousands	Oct. 31, 2024 USD ($)
Leases [Abstract]
2025 (3 months remaining)	$ 850
2026	2,907
2027	1,602
2028	799
2029	0
Thereafter	0
Total future annual minimum lease payments	6,158
Less: interest	(191)
Total lease liabilities	$ 5,967

Deferred Revenue - Additional I

Deferred Revenue - Additional Information (Detail) - USD ($) $ in Millions	9 Months Ended
	Oct. 31, 2024	Oct. 31, 2023
Deferred Revenue [Abstract]
Deferred revenue recognized	$ 0.8	$ 1.2
Remaining duration of performance obligation	1 year
Amount of remaining performance obligation	$ 12.4
Percentage of remaining performance obligation	97%
Description of expected timing to be recognized	expected to be recognized within the next 12 months

Other Long-Term Liabilities - S

Other Long-Term Liabilities - Schedule of Other Long-Term Liabilities (Detail) - USD ($) $ in Thousands	Oct. 31, 2024	Jan. 31, 2024
Other Liabilities Disclosure [Abstract]
Unrecognized tax benefits, including interest	$ 3,974	$ 3,762
Deferred tax liabilities	855	855
Software license liabilities, non-current	2,021	8,288
Other long-term liabilities	58	4
Total other long-term liabilities	$ 6,908	$ 12,909

Capital Stock - Additional Info

Capital Stock - Additional Information (Detail) - USD ($) $ in Millions		9 Months Ended
	Jun. 30, 2025	Oct. 31, 2024	Jan. 31, 2024
Class Of Stock [Line Items]
Preference shares, shares issued		0	0
Preference shares, shares outstanding		0	0
Share Repurchase Program [Member]
Class Of Stock [Line Items]
Stock repurchased, shares		0
Amount available under stock repurchase program		$ 49
Share Repurchase Program [Member] | Forecast [Member]
Class Of Stock [Line Items]
Stock repurchase program, expiration date	Jun. 30, 2025
ESPP [Member]
Class Of Stock [Line Items]
Additional ordinary shares reserved for issuance		994,543
ESPP [Member] | Scenario, plan automatically increased by the lessor of [Member]
Class Of Stock [Line Items]
Annual increase in ordinary shares for available for future issuance		1,500,000
Annual shares increase for future issuance by percentage under 2012 employee stock purchase plan		1.25%
2021 EIP [Member]
Class Of Stock [Line Items]
Additional ordinary shares reserved for issuance		1,750,000
Ordinary shares reserved for issuance		3,100,000
Maximum number of ordinary shares reserved for issuance		6,834,208

Capital Stock - Schedule of Ord

Capital Stock - Schedule of Ordinary Shares Reserved for Future Issuance under Company's Equity Plans and Employee Stock Purchase Plan (Detail) - shares	Oct. 31, 2024	Jan. 31, 2024
Equity Plan [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares reserved	5,284,821	4,492,705
ESPP [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares reserved	3,636,591	2,834,384

Stock-based Compensation - Clas

Stock-based Compensation - Classification of Stock-based Compensation (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 31, 2024	Oct. 31, 2023	Oct. 31, 2024	Oct. 31, 2023
Stock-based compensation:
Total stock-based compensation	$ 26,847	$ 27,409	$ 80,495	$ 82,796
Cost of revenue [Member]
Stock-based compensation:
Total stock-based compensation	899	868	2,339	2,694
Research and development [Member]
Stock-based compensation:
Total stock-based compensation	18,637	17,898	54,653	54,809
Selling, general and administrative [Member]
Stock-based compensation:
Total stock-based compensation	$ 7,311	$ 8,643	$ 23,503	$ 25,293

Stock-based Compensation - Addi

Stock-based Compensation - Additional Information (Detail) $ / shares in Units, $ in Millions	9 Months Ended
	Oct. 31, 2024 USD ($) $ / shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Accrued stock-based compensation expense liabilities	$ 4.9
Closing price of ordinary shares | $ / shares	$ 56.19
Stock options [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Total unrecognized compensation cost, stock options	$ 2.9
Weighted average recognition period	6 months 29 days
Restricted stock units [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Total unrecognized compensation cost, restricted stock units	$ 176.9
Weighted average recognition period	2 years 6 months 18 days
Aggregate intrinsic value of unvested restricted stock units	$ 160.8

Stock-based Compensation - Weig

Stock-based Compensation - Weighted-Average Assumptions Used to Estimate Fair Value (Detail) - Employee stock purchase plan awards [Member]	3 Months Ended		9 Months Ended
	Oct. 31, 2024	Oct. 31, 2023	Oct. 31, 2024	Oct. 31, 2023
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Volatility	56%	54%	47%	56%
Risk-free interest rate	4.55%	5.49%	4.97%	5.11%
Expected term (years)	6 months	6 months	6 months	6 months
Dividend yield	0%	0%	0%	0%

Stock-based Compensation - Stoc

Stock-based Compensation - Stock Option Activities (Detail) $ / shares in Units, $ in Thousands	9 Months Ended
	Oct. 31, 2024 USD ($) $ / shares shares
Share-Based Payment Arrangement [Abstract]
Shares, Outstanding | shares	373,318
Shares, Exercised | shares	(105,890)
Shares, Forfeited | shares	(63)
Shares, Expired | shares	(1,425)
Shares, Outstanding | shares	265,940
Shares, Exercisable | shares	246,289
Weighted-Average Exercise Price, Outstanding | $ / shares	$ 46.39
Weighted-Average Exercise Price, Exercised | $ / shares	37.59
Weighted-Average Exercise Price, Forfeited | $ / shares	111.5
Weighted-Average Exercise Price, Expired | $ / shares	50.93
Weighted-Average Exercise Price, Outstanding | $ / shares	49.86
Weighted-Average Exercise Price, Exercisable | $ / shares	$ 51.26
Total Intrinsic Value Of Options Exercised | $	$ 1,705
Weighted-Average Remaining Contractual Term, Outstanding	3 years 7 months 20 days
Weighted-Average Remaining Contractual Term, Exercisable	3 years 5 months 12 days
Aggregate Intrinsic Value, Outstanding | $	$ 2,883
Aggregate Intrinsic Value, Exercisable | $	$ 2,377

Stock-based Compensation - Rest

Stock-based Compensation - Restricted Stock Unit Activities (Detail) - Restricted Stock Unit [Member]	9 Months Ended
	Oct. 31, 2024 $ / shares shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares, Unvested, beginning balance | shares	2,432,640
Shares, Granted | shares	1,431,816
Shares, Vested | shares	(851,932)
Shares, Forfeited | shares	(151,000)
Shares, Unvested, ending balance | shares	2,861,524
Weighted-Average Grant-Date Fair Value, Unvested, beginning balance | $ / shares	$ 82.54
Weighted-Average Grant-Date Fair Value, Granted | $ / shares	62.12
Weighted-Average Grant-Date Fair Value, Vested | $ / shares	75.81
Weighted-Average Grant-Date Fair Value, Forfeited | $ / shares	118.07
Weighted-Average Grant-Date Fair Value, Unvested, ending balance | $ / shares	$ 72.45

Net Loss Per Ordinary Share - C

Net Loss Per Ordinary Share - Computation of Basic and Diluted Loss Per Ordinary Share (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended						9 Months Ended
	Oct. 31, 2024	Jul. 31, 2024	Apr. 30, 2024	Oct. 31, 2023	Jul. 31, 2023	Apr. 30, 2023	Oct. 31, 2024	Oct. 31, 2023
Numerator:
Net loss	$ (24,071)	$ (34,889)	$ (37,932)	$ (41,710)	$ (31,198)	$ (35,902)	$ (96,892)	$ (108,810)
Denominator:
Weighted-average ordinary shares - basic	41,479,459			40,053,251			41,128,068	39,710,248
Weighted-average ordinary shares - diluted	41,479,459			40,053,251			41,128,068	39,710,248
Net loss per ordinary share:
Basic	$ (0.58)			$ (1.04)			$ (2.36)	$ (2.74)
Diluted	$ (0.58)			$ (1.04)			$ (2.36)	$ (2.74)

Net Loss Per Ordinary Share - W

Net Loss Per Ordinary Share - Weighted-Average Potentially Dilutive Securities Excluded from Computation of Diluted Net Loss Per Ordinary Share (Detail) - shares	3 Months Ended		9 Months Ended
	Oct. 31, 2024	Oct. 31, 2023	Oct. 31, 2024	Oct. 31, 2023
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive shares excluded from computation of earnings per share	2,477,648	1,792,889	2,245,300	1,628,631
Options to purchase ordinary shares [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive shares excluded from computation of earnings per share	190,382	214,595	205,214	242,277
Restricted stock units [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive shares excluded from computation of earnings per share	2,272,057	1,560,921	2,028,574	1,374,705
Employee stock purchase plan awards [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive shares excluded from computation of earnings per share	15,209	17,373	11,512	11,649

Income Taxes - Summary of Incom

Income Taxes - Summary of Income Taxes (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 31, 2024	Oct. 31, 2023	Oct. 31, 2024	Oct. 31, 2023
Income Tax Disclosure [Abstract]
Loss before income taxes	$ (23,419)	$ (40,065)	$ (94,735)	$ (108,923)
Provision (benefit) for income taxes	$ 652	$ 1,645	$ 2,157	$ (113)
Effective tax rate	(2.80%)	(4.10%)	(2.30%)	0.10%

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 31, 2024	Oct. 31, 2023	Oct. 31, 2024	Oct. 31, 2023
Income Taxes [Line Items]
Income tax expense (benefit)	$ 652	$ 1,645	$ 2,157	$ (113)
Unrecognized tax benefits	23,800		23,800
Decrease in unrecognized tax benefits is reasonably possible	$ 9,000		$ 9,000
U.S. federal tax authorities [Member] | Earliest tax year [Member]
Income Taxes [Line Items]
Income tax examination, year			2021
U.S. federal tax authorities [Member] | Latest tax year [Member]
Income Taxes [Line Items]
Income tax examination, year			2024
U.S. state tax authorities [Member] | Earliest tax year [Member]
Income Taxes [Line Items]
Income tax examination, year			2020
U.S. state tax authorities [Member] | Latest tax year [Member]
Income Taxes [Line Items]
Income tax examination, year			2024
Foreign tax authorities [Member] | Earliest tax year [Member]
Income Taxes [Line Items]
Income tax examination, year			2017
Foreign tax authorities [Member] | Latest tax year [Member]
Income Taxes [Line Items]
Income tax examination, year			2024
Oculii Corp [Member]
Income Taxes [Line Items]
Valuation allowance				$ 3,600

Commitments and Contingencies -

Commitments and Contingencies - Additional Information (Detail) - USD ($)	Oct. 31, 2024	Jan. 31, 2024
Loss Contingencies [Line Items]
Total manufacturing purchase commitments	$ 51,400,000	$ 30,700,000
Noncancellable service commitment and noncancellable on-premise internal-use software license	8,000,000
Loss recognized from adverse purchase commitments	0	0
Indemnification agreement [Member]
Loss Contingencies [Line Items]
Payments under indemnification obligations	0
Liabilities recorded under indemnification obligations	0	0
Other Matters [Member]
Loss Contingencies [Line Items]
Liabilities recorded under indemnification obligations	$ 0	$ 0

Segment Reporting - Additional

Segment Reporting - Additional Information (Detail) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 31, 2024 USD ($)	Oct. 31, 2023	Oct. 31, 2024 USD ($) Segment	Oct. 31, 2023	Jan. 31, 2024 USD ($)
Concentration Risk [Line Items]
Number of reportable segment | Segment			1
Property and equipment, net	$ 9,684		$ 9,684		$ 10,439
Accounts receivable	$ 33,967		$ 33,967		24,950
Sales revenue, net [Member] | WT [Member] | Customer concentration risk [Member]
Concentration Risk [Line Items]
Percentage of revenue	66.10%	53.70%	63.80%	52.20%
Sales revenue, net [Member] | Hakuto [Member] | Customer concentration risk [Member]
Concentration Risk [Line Items]
Percentage of revenue		12%
Sales revenue, net [Member] | Chicony [Member] | Customer concentration risk [Member]
Concentration Risk [Line Items]
Percentage of revenue	10.70%	11.70%	10.20%	13.90%
Accounts receivable [Member] | WT [Member] | Credit concentration risk [Member]
Concentration Risk [Line Items]
Accounts receivable	$ 16,800		$ 16,800		10,300
Accounts receivable [Member] | Chicony [Member] | Credit concentration risk [Member]
Concentration Risk [Line Items]
Accounts receivable	9,400		9,400		7,000
Asia Pacific [Member]
Concentration Risk [Line Items]
Property and equipment, net	4,400		4,400		5,300
United States [Member]
Concentration Risk [Line Items]
Property and equipment, net	4,200		4,200		3,900
Europe [Member]
Concentration Risk [Line Items]
Property and equipment, net	$ 1,100		$ 1,100		$ 1,200

Segment Reporting - Company's R

Segment Reporting - Company's Revenue by Geographic Region Based on Bill-to Location (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 31, 2024	Oct. 31, 2023	Oct. 31, 2024	Oct. 31, 2023
Revenue from External Customer [Line Items]
Total revenue	$ 82,653	$ 50,595	$ 200,850	$ 174,858
Taiwan [Member]
Revenue from External Customer [Line Items]
Total revenue	54,612	27,179	128,127	91,295
Asia Pacific [Member]
Revenue from External Customer [Line Items]
Total revenue	15,733	14,300	42,103	45,378
Europe [Member]
Revenue from External Customer [Line Items]
Total revenue	5,991	2,869	15,934	9,058
North America other than United States [Member]
Revenue from External Customer [Line Items]
Total revenue	5,756	5,032	12,033	24,407
United States [Member]
Revenue from External Customer [Line Items]
Total revenue	$ 561	$ 1,215	$ 2,653	$ 4,720