AMPX Form 144: 65,654 shares from vested RSUs to be sold on NYSE

Rhea-AI Filing Summary

Amprius Technologies, Inc. (AMPX) submitted a Form 144 notice for a proposed sale of common stock through Morgan Stanley Smith Barney LLC with an approximate aggregate market value of $447,511. The filing lists 65,654 shares to be sold on 08/21/2025 on the NYSE. The securities were reported as acquired on 08/20/2025 upon the release of restricted stock units from the issuer and were indicated as compensation, with 126,191 shares shown as the amount acquired. The filing reports 125,075,837 shares outstanding. No sales by the reporting person were reported in the past three months. The filer attests there is no undisclosed material adverse information.

Positive

• Broker and market specified: Sale to be executed through Morgan Stanley Smith Barney LLC on the NYSE, providing clear execution channel.
• Acquisition clearly disclosed: Shares were acquired by release of restricted stock units and recorded as compensation.

Negative

• None.

Insights

Securities Analyst

TL;DR: Routine insider sale notice: newly vested RSUs being sold through a broker, no prior sales reported in the last three months.

The Form 144 documents a proposed sale of 65,654 common shares via Morgan Stanley Smith Barney with an aggregate market value of $447,511, to occur on 08/21/2025. The shares were acquired on 08/20/2025 through release of restricted stock units and are labeled as compensation. The filing discloses 125,075,837 shares outstanding and states there were no securities sold in the past three months by the reporting person. This is a standard Form 144 disclosure required for certain insider sales and contains no additional commentary or indications of undisclosed material events.

Corporate Governance Expert

TL;DR: Compliance-focused filing showing issuance and planned sale of vested RSUs; conforms to Rule 144 requirements.

The notice identifies the broker, the class of securities, the number of shares to be sold, and the method of acquisition (release of restricted stock units) with payment characterized as compensation. The signer affirms lack of material non-public information. There are no disclosures of prior sales within the trailing three-month period. From a governance and disclosure perspective, the form contains the elements expected for an insider sale under Rule 144.

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

144: Issuer Information

Name of Issuer

SEC File Number

Address of Issuer

Phone

Name of Person for Whose Account the Securities are To Be Sold

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

Relationship to Issuer

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 1 New York Plaza, 38th fl. New York NY 10004	65654	447511	125075837	08/21/2025	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	08/20/2025	Release of restricted stock units	Issuer			126191	08/20/2025	Compensation

* 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

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

ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)

FAQ

What does Amprius (AMPX) disclose in this Form 144?

The filing notifies a proposed sale of 65,654 common shares via Morgan Stanley Smith Barney LLC with an aggregate market value of $447,511 to occur on 08/21/2025 on the NYSE.

How were the shares being sold by AMPX acquired?

The shares were acquired on 08/20/2025 through the release of restricted stock units, with the nature of payment listed as compensation.

Does the Form 144 report any securities sold by the reporting person in the past three months?

No. The filing explicitly states 'Nothing to Report' for securities sold during the past three months.

How many shares outstanding does the filing report for Amprius?

The filing reports 125,075,837 shares outstanding.