Exhibit 99.1

Ambarella, Inc. Announces Second Quarter Fiscal Year 2025 Financial Results

August 27, 2024 —Santa Clara, Calif. – Ambarella, Inc. (NASDAQ: AMBA), an edge AI semiconductor company, today announced financial results for its second quarter of fiscal year 2025 ended July 31, 2024.

• Revenue for the second quarter of fiscal 2025 was $63.7 million, up 3% from $62.1 million in the same period in fiscal 2024. For the six months ended July 31, 2024, revenue was $118.2 million, down 5% from $124.3 million for the six months ended July 31, 2023.

• Gross margin under U.S. generally accepted accounting principles (GAAP) for the second quarter of fiscal 2025 was 60.8%, compared with 61.9% for the same period in fiscal 2024. For the six months ended July 31, 2024, GAAP gross margin was 60.8%, compared with 61.1% for the six months ended July 31, 2023.

• GAAP net loss for the second quarter of fiscal 2025 was $34.9 million, or loss per diluted ordinary share of $0.85, compared with GAAP net loss of $31.2 million, or loss per diluted ordinary share of $0.79, for the same period in fiscal 2024. GAAP net loss for the six months ended July 31, 2024 was $72.8 million or loss per diluted ordinary share of $1.78. This compares with GAAP net loss of $67.1 million, or loss per diluted ordinary share of $1.70, for the six months ended July 31, 2023.

Financial results on a non-GAAP basis for the second quarter of fiscal 2025 are as follows:

• Gross margin on a non-GAAP basis for the second quarter of fiscal 2025 was 63.3%, compared with 64.6% for the same period in fiscal 2024. For the six months ended July 31, 2024, non-GAAP gross margin was 63.3%, compared with 63.8% for the six months ended July 31, 2023.

• Non-GAAP net loss for the second quarter of fiscal 2025 was $5.5 million, or loss per diluted ordinary share of $0.13. This compares with non-GAAP net loss of $6.0 million, or loss per diluted ordinary share of $0.15, for the same period in fiscal 2024. Non-GAAP net loss for the six months ended July 31, 2024 was $16.0 million, or loss per diluted ordinary share of $0.39. This compares with non-GAAP net loss of $12.1 million, or loss per diluted ordinary share of $0.31, for the six months ended July 31, 2023.

Based on information available as of today, Ambarella is offering the following guidance for the third quarter of fiscal year 2025, ending October 31, 2024:

• Revenue is expected to be between $77.0 million and $81.0 million.

• Gross margin on a non-GAAP basis is expected to be between 62.5% and 64.0%.

• Operating expenses on a non-GAAP basis are expected to be between $49.0 million and $51.0 million.

Ambarella reports gross margin, net income (loss) and earnings (losses) per share in accordance with GAAP and, additionally, on a non-GAAP basis. Non-GAAP financial information excludes the impact of stock-based compensation and acquisition-related costs adjusted for the associated tax impact, which includes the effect of any benefits or shortfalls recognized. Non-GAAP financial information also excludes the impact of the release of a valuation allowance on certain deferred tax assets. A reconciliation of the GAAP to non-GAAP gross margin, net income (loss) and earnings (losses) per share for the periods presented, as well as a description of the items excluded from the non-GAAP calculations, is included in the financial statements portion of this press release.

Total cash, cash equivalents and marketable debt securities on hand at the end of the second quarter of fiscal 2025 was $219.8 million, compared with $203.3 million at the end of the prior quarter and $216.5 million at the end of the same quarter a year ago.

“In our second quarter, we achieved record revenue for our edge AI inference products, and we are anticipating double-digit sequential growth in our total revenue for the third quarter,” said Fermi Wang, President and CEO. “Company specific drivers are more than offsetting the mixed global economic environment. We are now realizing initial revenue ramps from certain IoT and Automotive customers, especially from our new products. We are increasingly optimistic that over the long-run our new products have positioned us to scale our current computer vision business into more advanced AI networks, including vision-language models and GenAI, where rising edge compute needs can drive revenue growth in the years to come.”

Quarterly Conference Call

Ambarella plans to hold a conference call at 4:30 p.m. Eastern Time / 1:30 p.m. Pacific Time today with Fermi Wang, President and Chief Executive Officer, and John Young, Chief Financial Officer, to discuss the second quarter of fiscal year 2025 results. A live and archived webcast of the call will be available on Ambarella’s website at http://www.ambarella.com/ for up to 30 days after the call.

About Ambarella

Ambarella’s products are used in a wide variety of human vision and edge AI applications, including video security, advanced driver assistance systems (ADAS), electronic mirror, drive recorder, driver/cabin monitoring, autonomous driving and robotics applications. Ambarella’s low-power systems-on-chip (SoCs) offer high-resolution video compression, advanced image and radar processing, and powerful deep neural network processing to enable intelligent perception, fusion and planning. For more information, please visit www.ambarella.com.

“Safe harbor” statement under the Private Securities Litigation Reform Act of 1995

This press release contains forward-looking statements that are not historical facts and often can be identified by terms such as “outlook,” “projected,” “intends,” “will,” “estimates,” “anticipates,” “expects,” “believes,” “could,” “should,” or similar expressions, including the guidance for the third quarter of fiscal year 2025 ending October 31, 2024, and the comments of our CEO relating to our expectation of future revenue growth, customer demand for our AI inference products, the growth potential of our new products, potential drivers of future revenue growth, and the ability of our products to achieve success in advanced networks, including vision-language models and GenAI. The achievement or success of the matters covered by such forward-looking statements involves risks, uncertainties and assumptions. Our actual results could differ materially from those predicted or implied and reported results should not be considered as an indication of our future performance.

The risks and uncertainties referred to above include, but are not limited to, global economic and political conditions, including possible trade tariffs and restrictions; revenue being generated from new customers or design wins, neither of which is assured; the commercial success of our customers’ products; our customers’ ability to manage their inventory requirements; our growth strategy; our ability to anticipate future market demands and future needs of our customers, particularly for AI inference applications; our ability to introduce, and to generate revenue from, new and enhanced solutions; our ability to develop, and to generate revenue from, new advanced technologies, such as computer vision, AI functionality and advanced networks, including vision-language models and GenAI; our ability to retain and expand customer relationships and to achieve design wins; the expansion of our current markets and our ability to successfully enter new markets, such as the OEM automotive and robotics markets; anticipated trends and challenges, including competition, in the markets in which we operate; risks associated with global health conditions and associated risk mitigation measures; our ability to effectively manage growth; our ability to retain key employees; and the potential for intellectual property disputes or other litigation.

Further information on these and other factors that could affect our financial results is included in the company’s Annual Report on Form 10-K for our 2024 fiscal year, which is on file with the Securities and Exchange Commission. Additional information will also be set forth in the company’s quarterly reports on Form 10-Q, annual reports on Form 10-K and other filings the company makes with the Securities and Exchange Commission from time to time, copies of which may be obtained by visiting the Investor Relations portion of our web site at www.ambarella.com or the SEC’s web site at www.sec.gov. Undue reliance should not be placed on the forward-looking statements in this release, which are based on information available to us on the date hereof. The results we report in our Quarterly Report on Form 10-Q for the second fiscal quarter ended July 31, 2024 could differ from the preliminary results announced in this press release.

Ambarella assumes no obligation and does not intend to update the forward-looking statements made in this press release, except as required by law.

Non-GAAP Financial Measures

The company has provided in this release non-GAAP financial information, including non-GAAP gross margin, net income (loss), and earnings (losses) per share, as a supplement to the condensed consolidated financial statements, which are prepared in accordance with generally accepted accounting principles (“GAAP”). Management uses these non-GAAP financial measures internally in analyzing the company’s financial results to assess operational performance and liquidity. The company believes that both management and investors benefit from referring to these non-GAAP financial measures in assessing its performance and when planning, forecasting and analyzing future periods. Further, the company believes these non-GAAP financial measures are useful to investors because they

allow for greater transparency with respect to key financial metrics that the company uses in making operating decisions and because the company believes that investors and analysts use them to help assess the health of its business and for comparison to other companies. Non-GAAP results are presented for supplemental informational purposes only for understanding the company’s operating results. The non-GAAP information should not be considered a substitute for financial information presented in accordance with GAAP, and may be different from non-GAAP measures used by other companies.

With respect to its financial results for the second quarter of fiscal year 2025, the company has provided below reconciliations of its non-GAAP financial measures to its most directly comparable GAAP financial measures. With respect to the company’s expectations for the third quarter of fiscal year 2025, a reconciliation of non-GAAP gross margin and non-GAAP operating expenses guidance to the closest corresponding GAAP measure is not available without unreasonable efforts on a forward-looking basis due to the high variability and low visibility with respect to the charges excluded from these non-GAAP measures. We expect the variability of the above charges to have a significant, and potentially unpredictable, impact on our future GAAP financial results.

AMBARELLA, INC.

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS

(in thousands, except share and per share data)

(unaudited)

	Three Months Ended July 31,						Six Months Ended July 31,
	2024			2023			2024			2023
Revenue	$	63,724		$	62,121		$	118,197		$	124,263
Cost of revenue		24,983			23,659			46,296			48,282
Gross profit		38,741			38,462			71,901			75,981
Operating expenses:
Research and development		56,760			54,917			110,897			109,358
Selling, general and administrative		18,268			18,884			36,736			37,504
Total operating expenses		75,028			73,801			147,633			146,862
Loss from operations		(36,287	)		(35,339	)		(75,732	)		(70,881	)
Other income, net		2,145			737			4,416			2,023
Loss before income taxes		(34,142	)		(34,602	)		(71,316	)		(68,858	)
Provision (benefit) for income taxes		747			(3,404	)		1,505			(1,758	)
Net loss	$	(34,889	)	$	(31,198	)	$	(72,821	)	$	(67,100	)
Net loss per share attributable to ordinary shareholders:
Basic	$	(0.85	)	$	(0.79	)	$	(1.78	)	$	(1.70	)
Diluted	$	(0.85	)	$	(0.79	)	$	(1.78	)	$	(1.70	)
Weighted-average shares used to compute net loss per share attributable to ordinary shareholders:
Basic		41,129,754			39,736,704			40,952,373			39,538,748
Diluted		41,129,754			39,736,704			40,952,373			39,538,748

The following tables present details of stock-based compensation and acquisition-related costs included in each functional line item in the condensed consolidated statements of operations above:

	Three Months Ended July 31,				Six Months Ended July 31,
	2024		2023		2024		2023
	(unaudited, in thousands)
Stock-based compensation:
Cost of revenue	$	833	$	885	$	1,440	$	1,826
Research and development		18,395		18,550		36,016		36,911
Selling, general and administrative		8,384		8,687		16,192		16,650
Total stock-based compensation	$	27,612	$	28,122	$	53,648	$	55,387

	Three Months Ended July 31,				Six Months Ended July 31,
	2024		2023		2024		2023
	(unaudited, in thousands)
Acquisition-related costs:
Cost of revenue	$	757	$	757	$	1,514	$	1,514
Research and development		—		—		—		—
Selling, general and administrative		530		520		1,050		1,040
Total acquisition-related costs	$	1,287	$	1,277	$	2,564	$	2,554

The difference between GAAP and non-GAAP gross margin was 2.5% and 2.7%, or $1.6 million and $1.6 million, for the three months ended July 31, 2024 and July 31, 2023, respectively. The difference between GAAP and non-GAAP gross margin was 2.5% and 2.7%, or $3.0 million and $3.3 million, for the six months ended July 31, 2024 and July 31, 2023, respectively. The differences were due to the effect of stock-based compensation and the amortization of acquisition-related costs.

AMBARELLA, INC.

RECONCILIATION OF GAAP TO NON-GAAP DILUTED LOSSES PER SHARE

(in thousands, except share and per share data)

	Three Months Ended July 31,						Six Months Ended July 31,
	2024			2023			2024			2023
	(unaudited)
GAAP net loss	$	(34,889	)	$	(31,198	)	$	(72,821	)	$	(67,100	)
Non-GAAP adjustments:
Stock-based compensation expense		27,612			28,122			53,648			55,387
Acquisition-related costs		1,287			1,277			2,564			2,554
Income tax effect		448			(4,237	)		600			(2,904	)
Non-GAAP net loss	$	(5,542	)	$	(6,036	)	$	(16,009	)	$	(12,063	)
GAAP - diluted weighted average shares		41,129,754			39,736,704			40,952,373			39,538,748
Non-GAAP - diluted weighted average shares		41,129,754			39,736,704			40,952,373			39,538,748
GAAP - diluted net loss per share	$	(0.85	)	$	(0.79	)	$	(1.78	)	$	(1.70	)
Non-GAAP adjustments:
Stock-based compensation expense		0.68			0.71			1.32			1.40
Acquisition-related costs		0.03			0.03			0.06			0.06
Income tax effect		0.01			(0.10	)		0.01			(0.07	)
Effect of Non-GAAP - diluted weighted average shares		—			—			—			—
Non-GAAP - diluted net loss per share	$	(0.13	)	$	(0.15	)	$	(0.39	)	$	(0.31	)

AMBARELLA, INC.

CONDENSED CONSOLIDATED BALANCE SHEETS

(unaudited, in thousands)

	July 31,			January 31,
	2024			2024
ASSETS
Current assets:
Cash and cash equivalents	$	153,925		$	144,914
Marketable debt securities		65,880			75,013
Accounts receivable, net		23,160			24,950
Inventories		30,660			29,043
Restricted cash		7			7
Prepaid expenses and other current assets		6,051			6,230
Total current assets		279,683			280,157
Property and equipment, net		9,042			10,439
Deferred tax assets		163			234
Intangible assets, net		48,404			55,136
Operating lease right-of-use assets, net		6,744			5,250
Goodwill		303,625			303,625
Other non-current assets		2,673			2,814
Total assets	$	650,334		$	657,655
LIABILITIES AND SHAREHOLDERS’ EQUITY
Current liabilities:
Accounts payable		19,443			28,503
Accrued and other current liabilities		62,400			48,598
Operating lease liabilities, current		3,652			3,443
Income taxes payable		809			1,541
Deferred revenue, current		5,152			894
Total current liabilities		91,456			82,979
Operating lease liabilities, non-current		3,101			1,896
Other long-term liabilities		8,226			12,909
Total liabilities		102,783			97,784
Shareholders’ equity:
Preference shares		—			—
Ordinary shares		19			18
Additional paid-in capital		755,449			694,967
Accumulated other comprehensive loss		(165	)		(183	)
Accumulated deficit		(207,752	)		(134,931	)
Total shareholders’ equity		547,551			559,871
Total liabilities and shareholders’ equity	$	650,334		$	657,655

Contact:

Louis Gerhardy

408.636.2310

lgerhardy@ambarella.com