Ambiq Micro: chief technology officer Hanson McLean exercised 14,000 shares

What happened

• Hanson Scott McLean, chief technology officer and director, reported option exercises and open-market sales on Oct 15, 2026. The filing shows exercises/conversions involving 14,000 shares (one exercise acquired 7,000 shares at $8.12 for $56,840; one exercise/derivative disposition 7,000 shares at $0.00). The filing also shows open-market sales of 7,000 shares in multiple transactions for total proceeds of $357,009.

Key details

• Transaction dates and prices:
  • Oct 15, 2026: exercised or converted 7,000 shares at $8.12 (acquired) for $56,840.
  • Oct 15, 2026: exercised or converted 7,000 shares at $0.00 (disposed; derivative).
  • Oct 15, 2026: sold 600 shares at a weighted average $49.06 for $29,436 (sales ranged $48.61–$49.59).
  • Oct 15, 2026: sold 900 shares at a weighted average $50.08 for $45,074 (sales ranged $49.74–$50.67).
  • Oct 15, 2026: sold 3,700 shares at a weighted average $51.12 for $189,148 (sales ranged $50.74–$51.65).
  • Oct 15, 2026: sold 1,800 shares at a weighted average $51.86 for $93,351 (sales ranged $51.74–$52.00).
• Shares owned after the transaction: not reported in this Form 4.
• Footnotes that matter:
  • Transactions occurred under a Rule 10b5-1 plan adopted May 15, 2026 (F1).
  • Several sale lines report weighted-average prices with price ranges and an offer to provide details on amounts at each price (F2–F5).
  • Vesting schedule note applies to the underlying option (1/4 vested Aug 16, 2019, then monthly thereafter) (F6).
• Filing timeliness: reported on Oct 16, 2026, for transactions dated Oct 15, 2026 (not marked late).

Why it may matter

• The filing shows option exercises and concurrent open-market sales; the filing indicates sales were completed in multiple transactions at weighted-average prices as noted above.
• The filing does not show why the insider traded or why the company acted.