Ambiq Micro (AMBQ) CTO Scott McLean Sells 7,000 Shares After Exercising Options

What Happened

• Scott McLean, Ambiq Micro’s Chief Technology Officer and Director, exercised 7,000 option shares at $8.12 per share (cost $56,840) on 2026-09-15 and sold the 7,000 shares the same day in multiple open-market transactions for total proceeds of approximately $421,943. The filing also records the disposition of the related derivative instrument upon exercise.
• Net proceeds (sale proceeds minus exercise cost) are roughly $365,103 before fees and taxes. These were sales, not purchases — routine monetization of vested option shares.

Key Details

• Transaction date: September 15, 2026; Form 4 filed September 17, 2026 (timely).
• Exercise: 7,000 shares at $8.12 each = $56,840 (reported as an acquisition).
• Sales: 1,953 shares at $59.53 (weighted avg; range $58.93–$59.88), 4,947 shares at $60.56 (weighted avg; range $59.97–$60.82), and 100 shares at $61.00; total sale proceeds ≈ $421,943.
• Report shows a related derivative disposition of 7,000 shares at $0.00 (reflecting conversion/cancellation of the option).
• Shares owned after the transaction: not specified in the filing.
• Footnotes: trades were made under a Rule 10b5-1 trading plan adopted May 15, 2026 (F1). Footnotes F2/F3 provide sale-price ranges; F4 describes the original option vesting schedule.

Context

• This was an option exercise followed by same-day sales (effectively a cashless exercise/sale to monetize vested options). Such transactions are common for executives to cover exercise costs and taxes; they do not by themselves indicate a change in sentiment about the company.
• Factual summary only — no assumptions about motivations or future insider behavior.