Ambiq Micro (AMBQ) CTO Hanson McLean Exercises Options, Sells Shares

What Happened Hanson Scott McLean, Ambiq Micro’s Chief Technology Officer and a director, exercised 7,000 options on Aug 14, 2026 at $8.12 per share (total cost $56,840) and sold 7,000 shares in the open market the same day for aggregate proceeds of $450,639. The sales were executed in three blocks (800; 5,400; 800 shares) at weighted-average prices reported per lot. A separate derivative line shows disposition of 7,000 shares at $0, consistent with a net settlement or share surrender reported in the filing. These trades were implemented under a pre-established Rule 10b5-1 plan.

Key Details

• Transaction date (effective): August 14, 2026; Form 4 filed August 18, 2026.
• Option exercise: 7,000 shares acquired at $8.12 each — total $56,840.
• Open-market sales (total 7,000 shares) — total proceeds $450,639:
  • 800 shares at weighted avg $63.26 (prices ranged $62.74–$63.61) — $50,605.
  • 5,400 shares at weighted avg $64.41 (prices ranged $63.99–$64.90) — $347,793.
  • 800 shares at weighted avg $65.30 (prices ranged $65.01–$65.55) — $52,241.
• A derivative disposition of 7,000 shares at $0 is also reported (may reflect net settlement/surrender related to the exercise).
• Plan/footnotes: Transactions occurred under a Rule 10b5-1 plan adopted May 15, 2026. Vesting info for the option grant is noted (initial vesting 8/16/2019, then monthly thereafter).
• Filing timeliness: Form 4 was filed 4 days after the transaction date (appears timely, not marked late).
• Shares owned after the transactions were not provided in the data supplied here.

Context

• The filing shows an option exercise followed by open-market sales the same day; this pattern is commonly a cashless/partial cash exercise and disposition to cover costs or realize gains. The presence of a Rule 10b5-1 plan indicates these sales were prearranged. Sales by insiders can be routine and do not by themselves indicate a change in company outlook.