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

What Happened Hanson Scott McLean, Ambiq Micro’s Chief Technology Officer and director, exercised options to acquire a total of 65,000 shares (10,000 + 27,500 + 27,500) at an exercise price of $8.12, for an aggregate cash cost of $527,800. He then sold 55,000 shares in open-market transactions across 8/26–8/27, generating approximately $3,283,078 in proceeds (sales reported at weighted-average prices).

The Form 4 shows additional derivative entries reported as dispositions at $0.00 that reflect conversion/exercise of the option instruments (these are reported separately from the open-market sales).

Key Details

• Transaction dates: exercises on 2026-08-26 and 2026-08-27; open-market sales on 2026-08-26 and 2026-08-27. Filing date: 2026-08-28 (appears timely within the 2-business-day window).
• Exercise details: 65,000 shares acquired at $8.12; total exercise cost = $527,800.
• Sales details: 55,000 shares sold in multiple transactions; reported proceeds ≈ $3,283,078.
  • 27,500 sold 8/26 at weighted avg $59.58 (range $59.00–$59.90) — proceeds $1,638,469. (F1)
  • 22,590 sold 8/27 at weighted avg $59.69 (range $59.11–$60.10) — proceeds $1,348,433. (F2)
  • 4,910 sold 8/27 at weighted avg $60.32 (range $60.11–$60.78) — proceeds $296,176. (F3)
• Shares owned after transaction: not specified in the provided filing extract.
• Vesting notes: filing includes vesting schedules for the options (see F4 and F5 for historical vesting terms).
• Footnotes F1–F3: sale prices are weighted averages; the reporting person will provide a per-price breakdown on request.

Context

• This was an option exercise followed by open-market sales (i.e., the insider exercised derivative awards and sold shares), consistent with a common cashless-exercise / sell-to-cover pattern. The filing labels the conversions/exercises as derivative transactions (code M).
• Such sales are routine for exercising option-based compensation; they do not by themselves indicate the insider’s view on the company’s long-term prospects.