Ambiq Micro: Chief technology officer Hanson Scott McLean sold 8,680 shares

What happened Hanson Scott McLean, chief technology officer and director, sold 8,680 shares in three open-market transactions on Oct 2, 2026, for total proceeds of $604,091. The filing lists: 3,728 shares at $69.11 for $257,636; 4,500 shares at $69.77 for $313,975; and 452 shares at $71.86 for $32,480. Transaction code: S (sale).

Key details

• Transaction date: Oct 2, 2026. Reported weighted-average prices: $69.11, $69.77, $71.86.
• Price ranges per footnotes: 3,728-share sale ranged $68.41–$69.40 (F2); 4,500-share sale ranged $69.41–$70.16 (F3); 452-share sale ranged $71.50–$72.26 (F4). The filer can provide a breakdown of the individual trade prices on request.
• Footnote F1: the sale was effected pursuant to the issuer's sell-to-cover policy to satisfy tax obligations from vesting and settlement of certain restricted stock units.
• Shares owned after the transaction: not reported on this Form 4.
• Form filed on Oct 6, 2026, reporting the Oct 2, 2026 transactions; the filing does not indicate a late filing.

Why it may matter The filing states the transactions were sell-to-cover related to restricted stock unit vesting, rather than a gift or an options exercise. This filing does not show why the insider traded or why the company acted.