Ambiq Micro: Hanson proposes $600K stock sale

The notice lists 24,516,643 shares outstanding and names Morgan Stanley Smith Barney LLC as broker for the proposed sale.

Rhea-AI Filing Summary

Ambiq Micro, Inc. common stock is the subject of a proposed Rule 144 sale by Scott McLean Hanson of 8,680 shares, with an aggregate market value of $600,222.00 and an approximate sale date of October 2, 2026. The notice describes it as a sell-to-cover transaction for taxes owed related to recent vesting and settlement of restricted stock units granted by Ambiq Micro.

Key Figures

Shares proposed for sale: 8,680 shares Aggregate market value: $600,222.00 Shares outstanding: 24,516,643 shares +4 more

7 metrics

Shares proposed for sale 8,680 shares Approximate sale date: October 2, 2026

Aggregate market value $600,222.00 Proposed sale

Shares outstanding 24,516,643 shares Issuer shares outstanding reported in the securities information table

September 15, 2026 sale 7,000 shares; $421,942.38 Sale listed among securities sold during the past three months

August 27, 2026 sale 27,500 shares; $1,644,609.24 Sale listed among securities sold during the past three months

August 26, 2026 sale 27,500 shares; $1,638,469.25 Sale listed among securities sold during the past three months

August 14, 2026 sale 7,000 shares; $450,638.89 Sale listed among securities sold during the past three months

Key Terms

Rule 144, Restricted Stock Units, sell-to-cover

3 terms

Rule 144 regulatory

"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.

Restricted Stock Units financial

"Restricted Stock Units | Issuer"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

sell-to-cover financial

"This is a sell-to-cover transaction for taxes owed"

Sell-to-cover is when part of newly issued or exercised company stock is immediately sold to pay required taxes and fees, so the recipient keeps the remaining shares. For investors this matters because it reduces the number of shares insiders or employees actually hold after a grant, can create small, routine share sales that aren’t signal of cashing out, and slightly increases share supply on the market—like selling a portion of a paycheck to cover the tax bill.

FAQ

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

How many AMBQ shares does Scott McLean Hanson plan to sell?

The notice lists 8,680 shares of Ambiq Micro, Inc. common stock for sale, with an aggregate market value of $600,222.00 and an approximate sale date of October 2, 2026. Morgan Stanley Smith Barney LLC is named as broker, and NYSE is listed as the exchange.

Why is Scott McLean Hanson selling AMBQ shares?

The transaction is described as a sell-to-cover for taxes owed related to recent vesting and settlement of restricted stock units granted by Ambiq Micro, Inc.

What recent AMBQ sales does the notice list?

The notice lists Scott McLean Hanson sales of 7,000 shares on September 15, 2026 for $421,942.38; 27,500 shares on August 27, 2026 for $1,644,609.24; 27,500 shares on August 26, 2026 for $1,638,469.25; and 7,000 shares on August 14, 2026 for $450,638.89.

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

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Available on EDGAR 10/02/2026 - 04:12 PM Accepted by SEC EDGAR 10/02/2026 - 04:11 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	0002078339
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 SUITE 200 AUSTIN TEXAS 78730
Phone	(512) 879-2850
Name of Person for Whose Account the Securities are To Be Sold	Scott McLean Hanson
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	Officer
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 Stock	Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza, 8th Floor New York NY 10004	8680	600222.00	24516643	10/02/2026	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 Stock	10/02/2025	Restricted Stock Units	Issuer			8680	10/02/2025	Services Rendered

* 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

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
Scott McLean Hanson 6500 River Place Blvd. Building 7 Austin TX 78730	Common Stock	09/15/2026	7000	421942.38
Scott McLean Hanson 6500 River Place Blvd. Building 7 Austin TX 78730	Common Stock	08/27/2026	27500	1644609.24
Scott McLean Hanson 6500 River Place Blvd. Building 7 Austin TX 78730	Common Stock	08/26/2026	27500	1638469.25
Scott McLean Hanson 6500 River Place Blvd. Unit 7 Austin TX 78730	Common Stock	08/14/2026	7000	450638.89

144: Remarks and Signature

Remarks	This is a sell-to-cover transaction for taxes owed related to recent vesting and settlement of restricted stock units granted by the Issuer.
Date of Notice	10/02/2026
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/ Scott McLean Hanson
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)