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. is the issuer in BlackRock, Inc.’s amended ownership report, which lists beneficial ownership of 1,628,207 common shares, or 6.7% of the class. BlackRock reported sole voting power over 1,589,366 shares and sole dispositive power over 1,628,207 shares; shared voting and dispositive power were both zero. The report states that various persons may receive dividends or sale proceeds, but no one person’s interest in Ambiq Micro common stock exceeds 5% of the total outstanding shares.
Ambiq Micro, Inc. Chief Technology Officer and director Scott McLean Hanson exercised options to acquire 7,000 common shares at an exercise price of $8.12 per share on October 15, 2026, and sold 7,000 shares that day in four reported blocks. The weighted average sale prices were $49.0592 for 600 shares, $50.0827 for 900 shares, $51.1210 for 3,700 shares, and $51.8615 for 1,800 shares. His reported post-transaction stock-option position was 38,279. All transactions were under a Rule 10b5-1 plan adopted May 15, 2026.
Ambiq Micro, Inc. (AMBQ) Chief Executive Officer Fumihide Esaka exercised options covering 5,000 shares at $8.1200 per share on October 15, 2026, acquiring 5,000 common shares. He sold 5,000 common shares in four reported transactions: 500 at a weighted-average $49.1340, 500 at $50.0220, 2,800 at $51.1478, and 1,200 at $51.8547 per share. The exercise and sales were made under a Rule 10b5-1 plan adopted May 15, 2026. After the exercise, Esaka directly held options covering 53,507 shares.
Ambiq Micro, Inc. President and COO Sean Chihhsiang Chen exercised options for 15,000 common shares at $8.12 per share on October 14, 2026, and acquired 15,000 common shares. That day, he sold 15,000 common shares in five reported transactions: 7,539 at a weighted average of $50.1290; 1,261 at $51.5306; 2,000 at $52.4682; 4,000 at $53.4363; and 200 at $54.2700 per share. The transactions occurred under a Rule 10b5-1 plan adopted June 5, 2026.
Ambiq Micro, Inc. (AMBQ) Chief Financial Officer Jeffrey G. Winzeler sold 5,455 shares of common stock on October 2, 2026, across three transactions. The reported weighted-average prices were $69.1083 for 2,343 shares, $69.7722 for 2,828 shares and $71.8592 for 284 shares. The sales were effected under the issuer’s policy requiring sell-to-cover to satisfy certain tax obligations incurred with the vesting and settlement of certain restricted stock units.
Ambiq Micro, Inc. Chief Executive Officer Fumihide Esaka reported selling 16,560 shares of common stock on October 2, 2026, pursuant to the issuer’s policy requiring sell-to-cover for certain tax obligations associated with vesting and settlement of restricted stock units. The three reported lots were 7,113 shares at a weighted average sale price of $69.1083 per share, 8,585 shares at $69.7722, and 862 shares at $71.8592.
At Ambiq Micro, Inc. (AMBQ), Chief Technology Officer and director Scott McLean Hanson sold 8,680 shares of common stock on October 2, 2026, across three reported transactions. The weighted-average sale prices were $69.1083 for 3,728 shares, $69.7722 for 4,500 shares and $71.8592 for 452 shares. The sales were effected pursuant to the issuer’s policy requiring sell-to-cover to satisfy certain tax obligations incurred with vesting and settlement of certain restricted stock units.
Ambiq Micro, Inc. (AMBQ) President and COO Sean Chihhsiang Chen reported sales totaling 14,007 shares of common stock. On October 2, 2026, the reported sales included 2,492, 3,008, and 302 shares under the issuer’s policy requiring sell-to-cover for certain tax obligations incurred with vesting and settlement of restricted stock units. On October 5, 2026, the reported sales included 5,508, 1,797, 800, and 100 shares under a Rule 10b5-1 plan adopted June 5, 2026.
Ambiq Micro, Inc. reports that Officer Sean Chen proposes to sell 53,205 shares of common stock, with an aggregate market value of $3,627,516.90. The proposed securities are to be received through stock-option exercises over the next three months, with acquisition and payment dates matching the exercise and sale dates.
Chen also reported three sales during the prior three months, each marked as a 10b5-1 sale: 5,802 shares on October 2, 2026, for $403,819.20; 15,000 shares on September 14, 2026, for $902,130.00; and 15,000 shares on September 4, 2026, for $857,557.50.
Ambiq Micro, Inc. officer Jeffrey G. Winzeler reported a proposed sale of 5,455 common shares, with an aggregate market value of $377,213.25 and an approximate sale date of October 2, 2026. The notice describes it as a sell-to-cover transaction for taxes owed related to recent vesting and settlement of restricted stock units granted by the issuer.