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. director HSIEH Wen Hsuan reported an equity award and updated holdings. The filing shows a grant of 4,957 restricted stock units, each representing one share of common stock, which will vest in three equal annual installments tied to continued board service. The director also reports indirect ownership of 633,920 common shares through Matter Venture Partners Fund I, L.P., over which he exercises sole voting and dispositive control.
Chen Timothy reported acquisition or exercise transactions in this Form 4 filing.
Ambiq Micro, Inc. director Timothy Chen reported a grant of 4,957 restricted stock units, each representing one share of common stock. These RSUs vest in three equal annual installments based on either grant anniversaries or upcoming annual stockholder meetings, subject to his continuous service, bringing his direct holdings to 52,575 shares.
Banks Bernard Bennett reported acquisition or exercise transactions in this Form 4 filing.
Ambiq Micro, Inc. director Bernard Bennett Banks received an equity grant in the form of restricted stock units. The award covers 4,957 shares of common stock at no purchase price and represents a compensation-related grant rather than an open-market transaction.
The RSUs vest in three equal annual installments after the grant date. Each installment vests on the earlier of the first, second, and third anniversaries of the grant date or the company’s corresponding first three annual stockholder meetings, subject to the director’s continuous service under Ambiq Micro’s 2025 Equity Incentive Plan.
TAUTGES JOSEPH A reported acquisition or exercise transactions in this Form 4 filing.
Ambiq Micro, Inc. director Joseph A. Tautges received an equity award in the form of 4,957 restricted stock units, each representing one share of common stock. The RSUs vest in three equal annual installments tied to future anniversaries of the grant date or annual stockholder meetings, subject to his continuous service under the company’s 2025 Equity Incentive Plan. Following this grant, he directly holds 53,703 shares of Ambiq Micro common stock.
ZHANG KER reported acquisition or exercise transactions in this Form 4 filing.
Ambiq Micro, Inc. director Ker Zhang received a grant of 4,957 restricted stock units, representing a right to receive the same number of common shares at no cost. These RSUs vest in three equal annual installments tied to future anniversaries or annual stockholder meetings, subject to his continued board service under the company’s 2025 Equity Incentive Plan. Following this equity award, Zhang holds 28,766 shares of common stock directly.
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.