ZHANG KER 4

4 · Ambiq Micro, Inc. · Filed Jun 10, 2026

AI-generated summary of this filing

Updated Jun 10, 2026

Ambiq Micro (AMBQ) Director Zhang Ker Receives 4,957 RSU Award

What Happened

Zhang Ker, a director of Ambiq Micro, was granted 4,957 restricted stock units (RSUs) on 2026-06-08. The Form 4 reports an acquisition at $0.00 per unit (total reported value $0), reflecting an equity award rather than a cash purchase.
This is a non-market compensation award (transaction code A), commonly used for director compensation; the RSUs convert to common shares only as they vest.

Key Details

Transaction date: 2026-06-08; Form 4 filed: 2026-06-10 (appears timely).
Award: 4,957 RSUs @ $0.00 (acquisition via grant).
Shares owned after transaction: Not specified in the filing.
Footnote: The RSUs vest in three equal annual installments (first, second, third anniversary of grant or the company’s corresponding annual stockholder meeting if earlier), subject to the director’s continued service per the Issuer’s 2025 Equity Incentive Plan (see footnote F1).
No tax-withholding, sale, or 10b5-1 plan noted in the filing.

Context

RSUs are a contingent right to receive one share per unit upon vesting; they do not represent immediately tradable stock until vested and issued.
Such grants are routine director compensation and do not by themselves indicate buying or selling sentiment.

Form 4

Period: 2026-06-08

Director

Transactions

Footnotes (1)

[F1]Represents the grant of restricted stock units ("RSUs"), each of which represents a contingent right to receive one share of the Issuer's common stock. The RSUs will vest in three equal annual installments following the date of grant, with each annual RSU vesting to occur on the earlier of: (i) the first, second, or third anniversary of the grant date, as applicable, or (ii) the date of the Company's first, second, or third annual stockholder meeting following the grant date, as applicable (or the date immediately prior to the applicable annual stockholder meeting if the Reporting Person's service as a director ends at such meeting due to the director's failure to be re-elected or the director not standing for re-election), subject to the Reporting Person's Continuous Service (as defined in the Issuer's 2025 Equity Incentive Plan).

Signature

/s/ Jeffrey Winzeler, Attorney-in-Fact|2026-06-10

1 file