Hanson Scott McLean 4

What Happened
Hanson Scott McLean, Ambiq Micro’s Chief Technology Officer and a director, received a grant of 80,308 restricted stock units (RSUs) on March 6, 2026. The award was reported as an "A" (award/grant) on Form 4 and shows an acquisition price of $0.00 (RSUs are non‑cash awards). This is a compensation/retention award rather than an open‑market purchase or sale.

Key Details

• Transaction date: 2026-03-06; Form 4 filed: 2026-03-10 (timely within SEC two-business-day rule).
• Instrument: 80,308 RSUs (grant of restricted stock units), transaction code A; reported acquisition value $0.00.
• Shares owned after transaction: not specified in the filing.
• Plan/vesting: Award governed by the Issuer's 2025 Equity Incentive Plan (see footnote).
• Footnote (vesting): 25% of the RSUs vest on September 1, 2027, with 1/12 of the shares vesting quarterly thereafter, subject to continuous service.

Context
RSUs are a form of equity compensation that convert to actual shares only after vesting and settlement; they do not provide immediate cash or market exposure until vested shares are delivered. Because this was a grant, it reflects company compensation decisions rather than an insider buying or selling stock in the open market.