HSIEH Wen Hsuan 4

What Happened
HSIEH Wen Hsuan, a director of Ambiq Micro, was granted 4,957 restricted stock units (RSUs) on June 8, 2026. The Form 4 reports an acquisition price of $0 (code A — award/grant). The grant represents a contingent right to receive up to 4,957 shares of Ambiq Micro common stock if and when the RSUs vest.

Key Details

• Transaction date: 2026-06-08; Form filed: 2026-06-10 (timely; within the typical 2-business-day Form 4 window).
• Transaction type/code: Award/Grant (A). Reported acquisition price: $0; reported total cash value: $0.
• Shares granted: 4,957 RSUs (each RSU represents a contingent right to one share).
• Shares owned after transaction: not disclosed in the provided filing.
• Footnotes:
  • F1: RSUs vest in three equal annual installments, vesting on the earlier of each anniversary of the grant or the Company’s annual stockholder meeting (subject to continuous service).
  • F2: Reporting person exercises sole voting/dispositive control over shares held by Matter Venture Partners Fund I, L.P. (disclosure of control over certain shares).

Context
RSU grants are a form of compensation, not an outright purchase or sale; they typically vest over time and convert to common stock upon vesting. This grant does not indicate an immediate sale or purchase of underlying shares and should be viewed as routine equity compensation for a director rather than a market-timing trade.