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. common stock is the subject of a proposed Rule 144 sale by Scott McLean Hanson of 8,680 shares, with an aggregate market value of $600,222.00 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 Ambiq Micro.
Ambiq Micro, Inc. (AMBQ) is the issuer in a notice for Fumihide Esaka’s proposed sale of 16,560 common shares, with an aggregate market value of $1,145,124.00 and an approximate sale date of October 2, 2026. Esaka is identified as an officer and director. The remarks describe the sale as a sell-to-cover transaction for taxes owed related to recent vesting and settlement of restricted stock units granted by the issuer.
Ambiq Micro, Inc. (AMBQ) officer Sean Chihhsiang Chen reported a proposed sale of 5,802 common shares, with an aggregate market value of $401,208.30 and an approximate sale date of October 2, 2026. Chen described it as a sell-to-cover transaction for taxes owed on recently vested and settled restricted stock units. The notice also lists sales of 15,000 shares on September 14, 2026, for $902,129.88 and 15,000 shares on September 4, 2026, for $857,557.50.
Ambiq Micro, Inc. insider Hanson Scott McLean, the Chief Technology Officer and a director, reported transactions involving company equity on September 15, 2026. He exercised 7,000 stock options to acquire an equal number of common shares at an exercise price of $8.12 per share, under an option scheduled to expire on October 1, 2028. Following this exercise, 45,279 options on Ambiq common stock remain held directly. On the same date, he sold a total of 7,000 common shares in several trades at weighted average prices around the $59–61 per share range, with pricing detail provided in the filing footnotes. All transactions occurred pursuant to a Rule 10b5-1 plan adopted on May 15, 2026.
Ambiq Micro, Inc. (AMBQ) director Ker Zhang reported selling a total of 10,000 shares of common stock on September 11, 2026 in open-market or private transactions. The sales consisted of 9,100 shares at a weighted average price of $63.3856 and 900 shares at a weighted average price of $63.9467, each executed in multiple trades within disclosed price ranges. No Rule 10b5-1 trading plan is reported for these transactions.
Ambiq Micro, Inc. (AMBQ) reported that President and COO Sean Chihhsiang Chen exercised stock options and sold common shares on September 14, 2026 under a pre-arranged Rule 10b5-1 trading plan adopted on June 5, 2026.
He exercised options to acquire 15,000 shares of common stock at an exercise price of $8.12 per share, then sold a total of 15,000 shares of common stock in multiple transactions at weighted average prices of $59.36, $60.24, and $60.83 per share. Following the option exercise, he continued to hold stock options covering 134,423 shares of Ambiq Micro common stock that remain outstanding and unexercised.
Ambiq Micro, Inc. (AMBQ) reported that Chief Executive Officer Fumihide Esaka exercised options for a total of 63,500 shares of common stock on September 11 and September 15, 2026, at exercise prices of $8.12 and $12.60 per share and sold 63,500 shares in market transactions. The sales, at weighted average prices generally between the high $50s and mid $60s per share, were made pursuant to a Rule 10b5-1 plan adopted on May 15, 2026.
Ambiq Micro, Inc. (AMBQ) has a notice under Rule 144 reporting that director Ker Zhang plans to sell 10,000 shares of common stock, with an aggregate market value of $634,361.00, through Morgan Stanley Smith Barney, with an approximate sale date of September 11, 2026. The notice lists prior acquisitions of these shares through restricted stock vesting under a registered plan in 2025 and 2026, and discloses a recent sale of 185 shares for $10,530.20 during the past three months.
Ambiq Micro, Inc. (AMBQ) has a planned secondary sale by security holder Fumihide Esaka under Rule 144. Esaka has filed to sell 50,000 shares of common stock, with an aggregate market value of $3,167,995, based on Ambiq Micro’s common stock listed on the NYSE.
The notice indicates Ambiq Micro had 24,185,000 shares of common stock outstanding. The shares to be sold are to be delivered through Morgan Stanley Smith Barney LLC, and Esaka’s planned sales are associated with the exercise of options under a registered plan for cash.
Ambiq Micro, Inc. (AMBQ) reports that President and COO Sean Chihhsiang Chen exercised options for 15,000 shares of common stock on September 4, 2026 at an exercise price of $8.12 per share and continues to hold 149,423 option shares. On the same date, he sold a total of 15,000 common shares in two transactions at weighted average prices of $57.09 and $57.68 per share, all under a Rule 10b5-1 plan adopted on June 5, 2026.