Welcome to our dedicated page for Ambiq Micro SEC filings (Ticker: AMBQ), a comprehensive resource for investors and traders seeking official regulatory documents including 10-K annual reports, 10-Q quarterly earnings, 8-K material events, and insider trading forms.
Ambiq Micro, Inc. filings document the public-company record for a fabless semiconductor issuer focused on ultra-low-power edge AI chips and software. Its SEC disclosures include S-1 registration materials for common stock offerings, 8-K reports on quarterly and annual financial results, and exchange-listing details for AMBQ common stock on the New York Stock Exchange.
Proxy and current-report filings cover shareholder voting matters, director elections, audit-firm ratification, board composition, executive compensation, equity awards, and other governance subjects. Capital-structure disclosures identify common stock terms and offering-related updates.
Ambiq Micro, Inc. held its 2026 Annual Meeting of Stockholders on June 8, 2026. Stockholders elected two Class I directors, Timothy Chen and Ker Zhang, Ph.D., to serve until the 2029 Annual Meeting and until their successors are elected and qualified.
Chen received 9,247,824 votes for and 1,931,909 votes withheld, while Zhang received 9,291,198 votes for and 1,888,535 votes withheld. There were 2,701,784 broker non-votes for each director. Stockholders also ratified the Audit Committee’s selection of KPMG LLP as independent registered public accounting firm for the fiscal year ending December 31, 2026, with 13,831,891 votes for, 11,022 against, and 38,604 abstentions.
Ambiq Micro, Inc. Chief Financial Officer Jeffrey G. Winzeler exercised stock options to acquire 5,952 shares of common stock at $16.80 per share on June 2, 2026. After the transaction, he directly owned 106,299 common shares and retained a substantial remaining stock option position.
The exercised options were part of a larger grant where 47,619 shares vested on October 1, 2025, with an additional portion vesting on June 2, 2026 and the rest vesting in equal monthly installments, subject to his continued service. The exercised option grant is scheduled to expire on June 9, 2035.
Ambiq Micro, Inc. director Timothy Chen reported a series of open-market sales of the company’s common stock on May 27, 2026. In total, an entity named Triumph Way Investment Inc., over which Chen exercises sole voting and dispositive control, sold 70,592 shares at weighted-average prices ranging from about $78 to $82 per share.
Following these transactions, Chen continues to hold 47,618 Ambiq Micro shares directly, according to the filing. The sales were executed in multiple trades at different prices within specified ranges, with full price details available on request from the company or the SEC staff.
Ambiq Micro director-associated entity converts preferred stock into common shares. An entity linked to director Timothy Chen, Triumph Way Investment Inc., converted shares of Series F-1 Convertible Preferred Stock into 70,592 shares of Common Stock on July 31, 2025, immediately before Ambiq Micro’s initial public offering. Following the automatic conversion, Chen holds these shares indirectly and exercises sole voting and dispositive control over them, while the Series F-1 Convertible Preferred Stock position is reduced to zero.
Ambiq Micro, Inc. director Timothy Chen filed an amended initial ownership report detailing an indirect position in Series F-1 Convertible Preferred Stock held through Triumph Way Investment Inc. This preferred stock is convertible into 70,592 shares of common stock at any time at his election.
According to the disclosure, Chen beneficially owns 1,707,853 shares of Series F-1 Convertible Preferred Stock, which will automatically convert into 70,592 common shares immediately before the closing of Ambiq Micro’s initial public offering. The filing reflects holdings and does not report new purchases or sales.
Ambiq Micro, Inc. Chief Financial Officer Jeffrey G. Winzeler exercised stock options to acquire 31,952 shares of common stock at $16.80 per share on May 14 and 15, 2026. On May 14, 2026, he sold 26,000 shares in open-market transactions at prices around $69.8981–$70.65 per share, based on a weighted average. After these moves, he directly holds 100,347 shares of common stock and 110,905 stock options, with certain options vesting over time and expiring on June 9, 2035.
Ambiq Micro Chief Technology Officer Hanson Scott McLean reported a mix of option exercises and share sales. On May 14, he exercised stock options at $8.12 per share for 10,200 shares of common stock, then sold a total of 10,200 common shares in several open-market trades at weighted average prices between $68.6234 and $70.50 per share. On May 15, he exercised additional options for 8,100 shares at the same $8.12 exercise price. Following these transactions, he directly holds 211,226 shares of common stock and 69,279 stock options, with the reported option grant vesting monthly after an initial vesting on August 16, 2019 and expiring on October 1, 2028.
Ambiq Micro President and COO Sean Chihhsiang Chen reported an exercise-and-sell transaction in company stock. On May 15, 2026, he exercised stock options for 55,685 shares of Common Stock at $5.88 per share and sold an equal number of shares in open-market trades.
The sales were split into 23,334 shares at a weighted average price of $71.3746 and 32,351 shares at a weighted average price of $70.5334, executed across multiple transactions within disclosed price ranges. After these transactions, Chen directly held 120,275 shares of Ambiq Micro common stock, indicating he retains a substantial equity position following the option exercise and related sales.
Ambiq Micro Chief Executive Officer Esaka Fumihide reported option exercises and a stock sale. On May 14, 2026, he exercised options to acquire 60,000 shares of common stock at $8.12 per share and sold 60,000 shares in an open‑market transaction at a weighted average price of $70.0187 per share.
On May 15, 2026, he reported additional option exercises that increased his direct holdings without same‑day sales, including exercises at $12.60 per share. Following these transactions, he directly held 451,189 shares of Ambiq Micro common stock, while continuing to hold multiple stock option positions with stated vesting schedules and expirations.