Fumihide Esaka - 07 Oct 2025 Form 4 Insider Report for Ambiq Micro, Inc. (AMBQ)

Role
Chief Executive Officer, Director
Signature
/s/ Jeffrey Winzeler, Attorney-in-Fact
Issuer symbol
AMBQ
Transactions as of
07 Oct 2025
Net transactions value
+$315,521
Form type
4
Filing time
10 Feb 2026, 20:08:49 UTC
Previous filing
06 Oct 2025
Next filing
10 Mar 2026
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Esaka Fumihide Chief Executive Officer, Director C/O AMBIQ MICRO, INC., 6500 RIVER PLACE BLVD BUILDING 7 STE 200, AUSTIN /s/ Jeffrey Winzeler, Attorney-in-Fact 10 Feb 2026 0002078454

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction AMBQ Common Stock Options Exercise $315,521 +53,660 +30% $5.88 230,573 07 Oct 2025 Direct

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
transaction AMBQ Stock Option (Right to Buy) Options Exercise $0 -53,660 -100% $0.000000 0 07 Oct 2025 Common Stock 53,660 $5.88 Direct F1
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 1/4 of the shares subject to the option vested on December 1, 2016, and 1/48 of the shares subject to the option vested in equal monthly installments thereafter, subject to the Reporting Person's continued service. The shares subject to this option are early exercisable, subject to the Issuer's right to repurchase.