AMPX Form 144 shows 68.7K-share planned sale, prior 1M sold

Rhea-AI Filing Summary

AMPX68,655 shares of common stock through broker Morgan Stanley Smith Barney LLC on the NYSE, with an indicated aggregate market value of 692,132. The company’s common shares outstanding are listed as 132,344,849 as of the figures in this notice.

The seller acquired 126,193 common shares on 11/20/2025 via a release of restricted stock units from the issuer as compensation. The notice also reports that during the past three months, Kang Sun sold 1,000,000 common shares on 11/17/2025 for gross proceeds of 10,595,300. By signing the notice, the seller represents that they are not aware of any undisclosed material adverse information about AMPX’s current or prospective operations.

11/25/2025 - 06:45 PM

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	68655	692132	132344849	11/21/2025	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	11/20/2025	Release of restricted stock units	Issuer			126193	11/20/2025	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

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
Kang Sun 1180 Page Ave. Fremont CA 94538	Common	11/17/2025	1000000	10595300

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 the AMPX Form 144 filing report?

The Form 144 reports a planned sale of 68,655 shares of AMPX common stock under Rule 144 by an affiliated seller through Morgan Stanley Smith Barney LLC on the NYSE.

How many AMPX shares are planned to be sold and what is their market value?

The notice states that 68,655 common shares are to be sold, with an aggregate market value of 692,132 based on the figures in the filing.

How many AMPX shares are outstanding according to this Form 144?

The Form 144 lists 132,344,849 common shares outstanding for AMPX at the time referenced in the notice.

How did the seller acquire the AMPX shares being sold under Rule 144?

The filing shows the seller acquired 126,193 common shares on 11/20/2025 through a release of restricted stock units from the issuer as compensation.

What AMPX stock sales occurred in the last 3 months by this person?

The notice reports that Kang Sun sold 1,000,000 AMPX common shares on 11/17/2025 for gross proceeds of 10,595,300 during the past three months.

What representation does the seller make in this AMPX Form 144?

By signing, the seller represents that they do not know of any material adverse information about AMPX’s current or prospective operations that has not been publicly disclosed.