HSIEH Wen Hsuan 4

What Happened
HSIEH Wen Hsuan, a director of Ambiq Micro, exercised a derivative security on Feb 18, 2026 to acquire 238,931 shares at $12.60 per share, for a total cash outlay of $3,010,531. The filing also shows the underlying derivative instrument (238,931 units) was disposed/cancelled at $0.00 as part of the conversion/exercise (transaction code M = exercise/conversion).

Key Details

• Transaction date: 2026-02-18; Form 4 filed: 2026-02-20 (timely filing).
• Shares acquired: 238,931 at $12.60 per share; total cost $3,010,531.
• Disposition shown: 238,931 derivative units @ $0.00 (reflects conversion/cancellation of the derivative upon exercise).
• Transaction code: M (exercise or conversion of a derivative).
• Shares owned after the transaction: Not specified in the provided filing excerpt.
• Footnotes: F1 — Reporting person exercises sole voting and dispositive control over shares held by Matter Venture Partners Fund I, L.P.; F2 — describes warrant terms (exercisable on the earlier of June 1, 2028, immediately prior to an IPO, or immediately prior to a qualifying acquisition, until expiration June 1, 2034).

Context
This was a cash exercise of a derivative (the insider paid $12.60 per share) rather than a cashless or immediate sale. The filing indicates control over the shares via Matter Venture Partners Fund I, L.P., per footnote F1. As with any insider purchase, this is factual disclosure of a buy-side transaction and does not, by itself, explain the insider’s motives.