Amprius (NYSE: AMPX) director logs 17,895-share open-market sale, retains large stake

Filing Impact

(Moderate)

Filing Sentiment

(Negative)

Form Type

Rhea-AI Filing Summary

Amprius Technologies director Donald R. Dixon reported an open‑market sale of 17,895 shares of common stock indirectly held through an affiliated entity at $17.8962 per share. After this sale, one indirect position shown holds 484,380 shares, alongside 269,656 shares held directly and another 163,142 shares held indirectly.

Footnotes state that certain indirect holdings are in The Dixon Revocable Trust and the Donald & Elizabeth Dixon 2004 Family Partners, where Dixon is a co‑trustee or co‑general partner. The direct position includes 44,444 restricted stock units that may convert into common shares if vesting conditions are met.

Insider Trade Summary

Net Seller: 17,895 shares ($320,252)

Net Sell 3 txns

Insider DIXON DONALD R

Role null

Sold 17,895 shs ($320K)

Type	Security	Shares	Price	Value
Sale	Common stock	17,895	$17.8962	$320K
holding	Common stock	--	--	--
holding	Common stock	--	--	--

Holdings After Transaction: Common stock — 484,380 shares (Indirect, See Footnote); Common stock — 269,656 shares (Direct, null)

Footnotes (1)

On July 22, 2025, the reporting person transferred 125,000 shares of the issuer's common stock, which were previously held directly by the reporting person, to the The Dixon Revocable Trust, for which the reporting person and his spouse are co-trustees. These securities are held directly by The Dixon Revocable Trust, for which the reporting person and his spouse are co-trustees. These securities are held by Donald & Elizabeth Dixon 2004 Family Partners, of which Mr. Dixon is a co-general partner. Includes 44,444 restricted stock units, each of which represents a contingent right to receive one share of the issuer's common stock, subject to the applicable vesting schedule and conditions of each restricted stock unit.

Key Figures

Shares sold: 17,895 shares Sale price: $17.8962 per share Indirect holdings after sale: 484,380 shares +3 more

6 metrics

Shares sold 17,895 shares Open-market sale of common stock

Sale price $17.8962 per share Price for 17,895 shares sold

Indirect holdings after sale 484,380 shares Indirect position following transaction

Direct holdings 269,656 shares Direct ownership position reported

Additional indirect holdings 163,142 shares Second indirect ownership line

Restricted stock units 44,444 RSUs Contingent rights to common shares in direct holdings

Key Terms

open-market sale, restricted stock units, Revocable Trust, Family Partners

4 terms

open-market sale financial

"reported an open‑market sale of 17,895 shares of common stock"

An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.

restricted stock units financial

"Includes 44,444 restricted stock units, each of which represents a contingent right"

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.

Revocable Trust financial

"transferred 125,000 shares ... to the The Dixon Revocable Trust"

A revocable trust is a legal arrangement where the person who creates it keeps control and can change or cancel the trust at any time, while naming who will manage and receive the assets later. Think of it like a flexible folder for your investments and property that can be relabeled or reworked as circumstances change; it matters to investors because it determines how ownership is recorded, how easily assets transfer on incapacity or death, and whether holdings bypass public probate proceedings.

Family Partners financial

"held by Donald & Elizabeth Dixon 2004 Family Partners, of which Mr. Dixon is a co-general partner"

Form 4 Insider Transactions: What Each Field Means →

05/28/2026 - 06:10 PM

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^*

DIXON DONALD R

(Last)

(First)

(Middle)

C/O AMPRIUS TECHNOLOGIES, INC.,

1180 PAGE AVENUE

(Street)

FREMONT

CALIFORNIA

94538

(City)

(State)

(Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
Amprius Technologies, Inc. [ AMPX ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director	10% Owner
	Officer (give title below)	Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/26/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common stock	05/26/2026		S		17,895	D	$17.8962	484,380⁽¹⁾	I	See Footnote⁽²⁾
Common stock								163,142	I	See Footnote⁽³⁾
Common stock								269,656⁽⁴⁾	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)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)

Explanation of Responses:

1. On July 22, 2025, the reporting person transferred 125,000 shares of the issuer's common stock, which were previously held directly by the reporting person, to the The Dixon Revocable Trust, for which the reporting person and his spouse are co-trustees.

2. These securities are held directly by The Dixon Revocable Trust, for which the reporting person and his spouse are co-trustees.

3. These securities are held by Donald & Elizabeth Dixon 2004 Family Partners, of which Mr. Dixon is a co-general partner.

4. Includes 44,444 restricted stock units, each of which represents a contingent right to receive one share of the issuer's common stock, subject to the applicable vesting schedule and conditions of each restricted stock unit.

Remarks:

	/s/ Ricardo C. Rodriguez, attorney-in-fact on behalf of Donald R. Dixon	05/28/2026
	** 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.
* Form 4: SEC 1474 (03-26)

Source: View Original Filing on SEC EDGAR

FAQ

What insider transaction did AMPX director Donald R. Dixon report?

Donald R. Dixon reported an open-market sale of 17,895 shares of Amprius Technologies common stock. The transaction was executed indirectly through an affiliated entity at $17.8962 per share, according to the Form 4 insider trading report.

At what price did the AMPX insider shares sell in this Form 4?

The reported insider sale was executed at $17.8962 per share. This price applied to 17,895 shares of Amprius Technologies common stock sold indirectly through an affiliated entity, as disclosed in the Form 4 filing for Donald R. Dixon.

How many Amprius Technologies shares does Donald R. Dixon hold after the sale?

After the reported sale, one indirect account holds 484,380 shares, with additional holdings of 269,656 shares directly and 163,142 shares indirectly. These positions, including restricted stock units, reflect Dixon’s reported ownership following the Form 4 transaction.

How are Donald R. Dixon’s indirect AMPX holdings structured?

Indirect holdings are reported through entities referenced in footnotes, including The Dixon Revocable Trust and Donald & Elizabeth Dixon 2004 Family Partners. Dixon is identified as co‑trustee or co‑general partner, indicating associated but entity-level ownership of Amprius Technologies shares.

Does the AMPX Form 4 include restricted stock units for Donald R. Dixon?

Yes. The filing notes 44,444 restricted stock units, each representing a contingent right to receive one share of Amprius Technologies common stock. These units vest over time based on specified schedules and conditions before converting into common shares.