Ambiq director plans $10.5K stock sale under 144

Ambiq Micro director Ker Zhang filed a Rule 144 notice to exercise options and sell 185 common shares for about $10.5 thousand on September 4, 2026.

Rhea-AI Filing Summary

Ambiq Micro, Inc. (AMBQ) director Ker Zhang filed a notice under Rule 144 to sell 185 shares of common stock. The proposed sale is planned for September 4, 2026 on the NYSE, with an aggregate market value of $10,530.20, based on shares outstanding of 24,184,536.

The shares are to be issued through an exercise of options under a registered plan, with the issuer as the counterparty and the transaction to be settled in cash, using Morgan Stanley Smith Barney LLC Executive Financial Services as broker.

Key Figures

Shares to be sold: 185 shares Aggregate market value: $10,530.20 Shares outstanding: 24,184,536 shares +1 more

4 metrics

Shares to be sold 185 shares Common stock covered by the Rule 144 notice

Aggregate market value $10,530.20 Value of 185 shares of common stock as listed in the notice

Shares outstanding 24,184,536 shares Ambiq Micro common shares outstanding used as a reference in the filing

Planned sale date September 4, 2026 Expected date of sale and option exercise

Key Terms

Rule 144, Exercise of Options Under a Registered Plan, Morgan Stanley Smith Barney LLC Executive Financial Services

3 terms

Rule 144 regulatory

"See the definition of "person" in paragraph (a) of Rule 144."

Rule 144 is a U.S. securities regulation that sets conditions under which restricted or insider-held shares can be legally resold to the public, such as required holding periods, availability of public information, limits on how much can be sold at once, and certain filing requirements. For investors it matters because it determines when previously locked-up shares can enter the market — like a release valve that can increase supply, affect share price, and signal insider intent.

Exercise of Options Under a Registered Plan financial

"Common | 09/04/2026 | Exercise of Options Under a Registered Plan | Issuer"

Morgan Stanley Smith Barney LLC Executive Financial Services financial

"Common | Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York"

FAQ

What does the Form 144 filing for AMBQ disclose about planned share sales?

It discloses that director Ker Zhang plans to sell 185 shares of Ambiq Micro common stock under Rule 144, with the sale expected on September 4, 2026 through Morgan Stanley Smith Barney LLC Executive Financial Services.

How many Ambiq Micro (AMBQ) shares are covered by Ker Zhang’s Rule 144 notice?

The notice covers 185 shares of Ambiq Micro common stock. These shares are tied to an exercise of options under a registered plan and are expected to be sold for cash on September 4, 2026.

What is the approximate market value of the AMBQ shares in this Form 144?

The filing lists an aggregate market value of $10,530.20 for the 185 shares of Ambiq Micro common stock covered by the notice, based on trading on the NYSE as of September 4, 2026.

How will the Ambiq Micro (AMBQ) shares in this Form 144 be obtained and sold?

The shares will be obtained through an exercise of options under a registered plan, with the issuer as the counterparty, and then sold for cash on or around September 4, 2026 via Morgan Stanley Smith Barney LLC Executive Financial Services.

What does the Form 144 say about Ambiq Micro (AMBQ) shares outstanding?

The filing states that there are 24,184,536 shares of Ambiq Micro common stock outstanding, a context figure used alongside the planned sale of 185 shares under Rule 144.

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

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Available on EDGAR 09/04/2026 - 04:08 PM Accepted by SEC EDGAR 09/04/2026 - 04:07 PM Learn about SEC filing dates

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0001266870
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	AMBIQ MICRO, INC.
SEC File Number	001-42766
Address of Issuer	6500 River Place Blvd. Building 7 Austin TEXAS 78730
Phone	(512) 879-2850
Name of Person for Whose Account the Securities are To Be Sold	KER ZHANG
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Director

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common	Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza 8th Floor New York NY 10004	185	10530.20	24184536	09/04/2026	NYSE

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common	09/04/2026	Exercise of Options Under a Registered Plan	Issuer			185	09/04/2026	Cash

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Nothing to Report

144: Remarks and Signature

Remarks
Date of Notice	09/04/2026
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	/s/ Ker Zhang
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)