Esaka Fumihide 4

What Happened
Esaka Fumihide, Chief Executive Officer of Ambiq Micro, was granted 160,616 restricted stock units (RSUs) on March 6, 2026. The Form 4 reports the award as an acquisition at $0.00 per share (i.e., a compensation grant), with no immediate cash exchanged or sale of shares.

Key Details

• Transaction date and type: 2026-03-06 — Award/Grant (code A) of 160,616 RSUs at $0.00 per share.
• Filing: Report filed 2026-03-10 (appears to be within the two-business-day Form 4 filing window for a 3/6 transaction).
• Shares owned after transaction: Not specified in the provided excerpt of the filing.
• Footnote: Each RSU is a contingent right to one share on settlement. 25% of the RSUs vest on September 1, 2027; thereafter 1/12 of the total subject RSUs vest quarterly, subject to continuous service and the Issuer’s 2025 Equity Incentive Plan (per footnote F1).

Context
RSU grants are a common form of executive compensation and do not represent an immediate market purchase or sale. The award only converts into actual shares (and potential taxable income) as the RSUs vest per the schedule above. Because this is a compensation grant rather than an open-market purchase or sale, it should be viewed as part of executive pay rather than a direct market signal.