Ambiq Micro (AMBQ) director Tautges sells 7,800 shares in $31 stock trade

Rhea-AI Filing Summary

Ambiq Micro, Inc. director Joseph A. Tautges reported a sale of company stock. On January 26, 2026, he sold 7,800 shares of Ambiq Micro common stock at $31 per share in a single open-market transaction. After this sale, he beneficially owns 48,746 common shares, held in direct ownership form.

Insider Trade Summary

Net Seller: 7,800 shares ($241,800)

Net Sell 1 txn

Insider TAUTGES JOSEPH A

Role Director

Sold 7,800 shs ($242K)

Type	Security	Shares	Price	Value
Sale	Common Stock	7,800	$31.00	$242K

Holdings After Transaction: Common Stock — 48,746 shares (Direct)

Footnotes (1)

Form 4 Insider Transactions: What Each Field Means →

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^*

TAUTGES JOSEPH A

(Last) (First) (Middle)

C/O AMBIQ MICRO, INC.

6500 RIVER PLACE BLVD., BUILDING 7 SUITE

(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
	Officer (give title below)		Other (specify below)

3. Date of Earliest Transaction (Month/Day/Year)
01/26/2026

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	01/26/2026		S		7,800	D	$31	48,746	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:

	/s/ Jeffrey Winzeler, Attorney-in-Fact	01/28/2026
	** 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.

FAQ

What insider transaction did Ambiq Micro (AMBQ) report for Joseph A. Tautges?

Ambiq Micro director Joseph A. Tautges reported selling 7,800 shares of common stock. The sale occurred on January 26, 2026, as disclosed in a Form 4 insider filing with the SEC, documenting changes in his beneficial ownership of AMBQ shares.

At what price did the Ambiq Micro (AMBQ) director sell his shares?

The director sold his Ambiq Micro common stock at $31 per share. This price applies to the 7,800 shares reported in the Form 4 transaction dated January 26, 2026, reflecting an open-market sale of AMBQ stock.

How many Ambiq Micro (AMBQ) shares does Joseph A. Tautges own after the sale?

Following the reported sale, Joseph A. Tautges beneficially owns 48,746 shares of Ambiq Micro common stock. The Form 4 indicates these shares are held directly, representing his remaining stake after disposing of 7,800 shares on January 26, 2026.

What role does Joseph A. Tautges hold at Ambiq Micro (AMBQ)?

Joseph A. Tautges is identified as a director of Ambiq Micro, Inc. in the insider filing. The Form 4 indicates he is not an officer or 10% owner, and the reported transaction reflects changes in his director-level beneficial ownership of AMBQ shares.

Was the Ambiq Micro (AMBQ) insider transaction a purchase or a sale?

The insider transaction was a sale of Ambiq Micro common stock. The Form 4 lists transaction code “S,” indicating a sale, covering 7,800 shares at $31 per share on January 26, 2026, by director Joseph A. Tautges.

Is the Ambiq Micro (AMBQ) insider stock holding direct or indirect after the sale?

After the transaction, the 48,746 Ambiq Micro shares reported as beneficially owned by Joseph A. Tautges are held directly. The Form 4 specifies ownership form “D” for direct ownership and gives no indication of indirect entities holding these shares.