Ambiq Reports Third Quarter 2025 Financial Results

Expects strong fourth quarter net sales of $18.5 – $19.5 million, marking the highest quarterly revenue of 2025

Third quarter net sales of $18.2 million exceeded guidance, driven by ongoing customer strength and product adoption

Third quarter GAAP gross margin of 42.3%; Non-GAAP gross margin of 44.8%, reflecting strategic pivot to higher-value, Edge AI customers and markets

Ambiq Micro, Inc. ("Ambiq") (NYSE:AMBQ), a technology leader in ultra-low-power semiconductor solutions for edge AI, today announced financial results for the third quarter of 2025.

Third Quarter and Recent Highlights

• AI-driven margin expansion: Delivered double-digit gross profit growth on lower year-over-year sales, reflecting strategic repositioning to focus on higher-value edge AI markets and customers.
• Net loss improvement: GAAP net loss attributable to common stockholders improved by $0.7 million year-over-year to $9.0 million or $0.72 per share; non-GAAP net loss attributable to common stockholders improved $1.8 million year-over-year to $4.0 million or $0.22 per share on a pro forma basis.
• Broadened edge AI SoC portfolio: Launched Apollo510 Lite, expanding reach across personal devices, medical/ healthcare, industrial edge and smart home and building markets.
• Accelerated AI enablement: Enhanced neuralSPOT SDK and Helia runtimes to streamline model deployment and speed customer time-to-market.
• Recognized innovation leadership: SPOT platform honored as one of TIME's Best Inventions of 2025.

Management Commentary

"Our third quarter results underscore the strength of our business and the growing demand for energy-efficient AI solutions at the edge. Our growth is accelerating with increased orders from existing customers, multiple design wins from new customers and growing Apollo5 production ramps," said Fumihide Esaka, CEO of Ambiq. "Our fourth quarter guidance is well ahead of consensus expectations and would mark the strongest quarterly performance of the year. Looking ahead, we believe that 2025 represents the beginning of a much larger opportunity for Ambiq. Our energy-efficient solutions are enabling the next wave of edge AI innovation while positioning us for meaningful, sustainable growth."

Summary of Reported Third Quarter 2025 Results

Non-GAAP gross profit, non-GAAP gross margin, non-GAAP operating expense and non-GAAP net loss attributable to common stockholders are non-GAAP financial measures. See "Non-GAAP Financial Measures" below for definitions of each of these measures, and the tables accompanying this press release for reconciliations of these measures to their most comparable GAAP measure.

Fourth Quarter Business Outlook

Ambiq's current expectations for the fourth quarter of 2025 ending December 31, 2025, include the following:

• Net sales within a range of $18.5 million to $19.5 million
• Non-GAAP loss per share within a range of ($0.44) to ($0.34) based on 18.2 million pro forma shares, which represents the company's post-IPO common shares outstanding¹

¹Ambiq's financial outlook is based on assumptions that it believes to be reasonable as of the date of this release, but may be materially affected by many factors, as discussed below in "Forward-Looking Statements." Actual results may vary from the guidance and the variations may be material. We undertake no intent or obligation to publicly update or revise this outlook, whether as a result of new information, future events or otherwise, except as required by law. The Company is unable to include a reconciliation of forward-looking non-GAAP net loss per share per share to net loss per share, the most directly comparable GAAP measure, without unreasonable effort due to the high variability with respect to the impact of items such as income taxes, depreciation and amortization, stock-based compensation expense, gain on nonmonetary transaction, severance costs, initial public offering (IPO) and other transaction costs, warrant valuation and other items that are excluded from this non-GAAP measure.

Conference Call

Ambiq will host a conference call for analysts and investors today at 5:00 p.m. Eastern Time. Interested participants can access the call by dialing 1-800-715-9871 and providing conference ID 3633496. International callers may join the call by dialing +1-646-307-1963, using the same code. The call will also be available as a live and archived webcast on the Events & Presentations section of Ambiq's Investor Relations website.

A telephone replay of the conference call will be available approximately two hours after the call through Thursday, 13th November 2025, at 11:59 PM EST. The replay can be accessed by dialing 1-800-770-2030 and using the playback ID 3633496. International callers should dial +1-647-362-9199 and enter the same ID at the prompt.

About Ambiq Micro

Headquartered in Austin, Texas, Ambiq's mission is to enable intelligence (artificial intelligence (AI) and beyond) everywhere by delivering the lowest power semiconductor solutions. Ambiq enables its customers to deliver AI compute at the edge where power consumption challenges are the most severe. Ambiq's technology innovations, built on the patented and proprietary subthreshold power optimized technology (SPOT®), fundamentally deliver a multi-fold improvement in power consumption over traditional semiconductor designs. Ambiq has powered over 280 million devices to date. For more information, visit www.ambiq.com.

Non-GAAP Financial Measures

Ambiq supplements its reporting of financial information determined under generally accepted accounting principles in the United States of America (GAAP), including the use of non-GAAP net loss attributable to common stockholders, non-GAAP gross profit, non-GAAP gross margin, non-GAAP operating expenses, non-GAAP R&D expenses, non-GAAP SG&A expenses, non-GAAP net loss attributable to common stockholders and pro forma non-GAAP loss per share attributable to common stockholders. These non-GAAP financial measures help make strategic decisions, establish budgets and operational goals for managing the business, analyzing financial results, and evaluating business performance. Ambiq defines non-GAAP gross profit as gross profit adjusted to exclude expenses not directly attributable to gross profit, such as depreciation and amortization, gain on nonmonetary transaction, and stock-based compensation. Ambiq defines non-GAAP gross margin as non-GAAP gross profit as a percentage of net sales. Ambiq defines non-GAAP operating expenses, non-GAAP R&D expenses and non-GAAP SG&A expenses as operating expenses, R&D expenses and SG&A expenses, as applicable, adjusted to exclude expenses not directly attributable to operating expenses, R&D expenses and SG&A expenses, as applicable, such as depreciation and amortization, stock-based compensation, severance costs, IPO-related bonus and IPO and other transaction costs Ambiq defines non-GAAP net loss attributable to common stockholders as net loss attributable to common stockholders adjusted to exclude expenses not directly attributable to the performance of operations, such as income taxes, depreciation and amortization, stock-based compensation, gain on nonmonetary transaction, severance costs, IPO-related bonus, IPO and other transaction costs and warrant valuation. Ambiq defines pro forma non-GAAP loss per share attributable to common stockholders as non-GAAP net loss attributable to common stockholders divided by pro forma common shares outstanding, which gives effect to the automatic conversion of all outstanding redeemable convertible preferred stock, exercise of warrants to purchase common stock and settlement of IPO vesting RSUs into common stock that occurred immediately prior to the completion of our initial public offering, as well as the issuance of shares in our initial public offering, as if such transactions had occurred on July 1, 2025.

Ambiq believes these non-GAAP financial measures provide additional tools for investors to use in comparing core business and results of operations over multiple periods with other companies in the industry, many of which present similar non-GAAP financial measures. However, Ambiq's presentation of non-GAAP gross profit, non-GAAP gross margin, non-GAAP operating expenses, non-GAAP R&D expenses, non-GAAP SG&A expenses, non-GAAP net loss attributable to common stockholders and pro forma non-GAAP loss per share attributable to common stockholders may not be comparable to similarly titled measures reported by other companies due to differences in the way that these measures are calculated. These non-GAAP measures have limitations, and should not be considered as the sole measures of our performance and should not be considered in isolation from, or as a substitute for, the most comparable measure calculated in accordance with GAAP.

Forward-Looking Statements

The statements contained in this press release that are not historical facts are forward-looking statements. You can identify forward-looking statements because they contain words such as "believes," "expects," "may," "will," "should," "seeks," "intends," "plans," "estimates," or "anticipates," or similar expressions which concern our strategy, plans, projections or intentions. These forward-looking statements may be included throughout this press release, and include, but are not limited to, statements relating to Ambiq's expectations around its strategic initiatives, growth trajectory and expected fourth quarter business outlook. By their nature, forward-looking statements are not statements of historical fact or guarantees of future performance and are subject to risks, uncertainties, assumptions or changes in circumstances that are difficult to predict or quantify including those described in the section titled "Risk Factors" in Ambiq's Quarterly Report on 10-Q for the quarter ended June 30, 2025, as well as in other filings Ambiq may make with the SEC in the future. Ambiq's expectations, beliefs and projections are expressed in good faith and Ambiq believes there is a reasonable basis for them. However, there can be no assurance that management's expectations, beliefs and projections will result or be achieved and actual results may vary materially from what is expressed in or indicated by the forward-looking statements. Any forward-looking statement in this press release speaks only as of the date of this release. Ambiq undertakes no obligation to publicly update or review any forward-looking statement, whether as a result of new information, future developments or otherwise, except as may be required by any applicable securities laws.

The following table reconcile the most directly comparable GAAP financial measure to each of these non-GAAP financial measures.

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Company Contact:

Charlene Wan

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P: +1-512-879-2850

E: [email protected]

Investor Relations Contact:

Teneo

Christina Coronios

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