Ambiq CTO granted 80,308 RSUs in Form 4

Hanson Scott McLean reported acquisition or exercise transactions in this Form 4 filing.

Rhea-AI Filing Summary

Hanson Scott McLean reported acquisition or exercise transactions in this Form 4 filing.

Ambiq Micro, Inc. director and Chief Technology Officer Scott McLean received a grant of 80,308 restricted stock units of Common Stock as equity compensation. These RSUs vest over time, with 25% vesting on September 1, 2027 and the remainder vesting quarterly thereafter, contingent on continued service. Following this award, McLean directly holds 203,126 shares of Common Stock.

Insider Trade Summary

Grant/Award: 80,308 shares

Grant/Award 1 txn

Insider Hanson Scott McLean

Role Chief Technology Officer

Type	Security	Shares	Price	Value
Grant/Award	Common Stock	80,308	$0.00	$0.00

Holdings After Transaction: Common Stock — 203,126 shares (Direct)

Footnotes (1)

1. F1. Represents the grant of restricted stock units (RSUs). Each RSU represents a contingent right to receive one share of the Issuer's Common Stock upon settlement. 25% of the shares subject to the RSU will vest on September 1, 2027, and 1/12 of the shares subject to the RSU will vest quarterly thereafter, subject to the Reporting Person's Continuous Service (as defined in the Issuer's 2025 Equity Incentive Plan).

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider transaction did Ambiq Micro (AMBQ) report for Scott McLean?

Ambiq Micro reported that Chief Technology Officer Scott McLean received a grant of 80,308 restricted stock units. These RSUs are a form of equity compensation that convert into Common Stock over time if he continues providing service to the company.

Is the Ambiq Micro (AMBQ) Form 4 transaction a stock purchase or a compensation grant?

The Form 4 shows a compensation-related grant, not an open-market stock purchase. Scott McLean acquired 80,308 restricted stock units at no cash cost, classified as a grant or award acquisition rather than a discretionary buy in the market.

How do Scott McLean’s Ambiq Micro (AMBQ) RSUs vest over time?

The RSUs vest on a schedule tied to continued service. Twenty-five percent of the 80,308 units vest on September 1, 2027, and the remaining units vest in equal quarterly installments thereafter, assuming ongoing continuous service under the 2025 Equity Incentive Plan.

How many Ambiq Micro (AMBQ) shares does Scott McLean hold after this Form 4?

After the reported RSU grant, Scott McLean holds 203,126 shares of Ambiq Micro Common Stock directly. This figure reflects his ownership immediately following the transaction recorded in the Form 4, combining his prior holdings with the newly awarded units.

What does the zero price per share mean in the Ambiq Micro (AMBQ) Form 4?

The reported price of 0.0000 per share indicates the RSUs were granted at no purchase cost to Scott McLean. This is typical for equity incentive awards, which are compensation grants rather than shares bought with the insider’s own cash in the open market.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 03/10/2026 - 05:00 PM EDT Learn about SEC filing dates

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Hanson Scott McLean

(Last) (First) (Middle)

C/O AMBIQ MICRO, INC.

6500 RIVER PLACE BLVD BUILDING 7 STE 200

(Street)

AUSTIN TX 78730

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Ambiq Micro, Inc. [ AMBQ ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chief Technology Officer

3. Date of Earliest Transaction (Month/Day/Year)
03/06/2026

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	03/06/2026		A		80,308(1)	A	$0	203,126	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. Represents the grant of restricted stock units (RSUs). Each RSU represents a contingent right to receive one share of the Issuer's Common Stock upon settlement. 25% of the shares subject to the RSU will vest on September 1, 2027, and 1/12 of the shares subject to the RSU will vest quarterly thereafter, subject to the Reporting Person's Continuous Service (as defined in the Issuer's 2025 Equity Incentive Plan).

	/s/ Jeffrey Winzeler, Attorney-in-Fact	03/10/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.