STOCK TITAN

Amprius Technologies (AMPX) CEO sells 2,000 shares, gifts stock

Filing Impact
(Neutral)
Filing Sentiment
(Negative)
Form Type
4

Rhea-AI Filing Summary

Amprius Technologies Chief Executive Officer Thomas M. Stepien reported a mix of open-market selling and gifts of company stock. On June 4, 2026, he sold 2,000 shares of common stock at $20.97 per share in an open-market transaction.

On the same date, he made bona fide gifts totaling 104,212 shares of common stock, including transfers to the Rogers Stepien Family Revocable Trust. After these transactions, he holds 625,625 shares directly and 36,914 shares indirectly through the trust, and footnotes state his holdings include 615,625 restricted stock units that may convert into shares over time.

Positive

  • None.

Negative

  • None.
Insider Stepien Thomas M
Role Chief Executive Officer
Sold 2,000 shs ($42K)
Type Security Shares Price Value
Gift Common stock 30,384 $0.00 --
Gift Common stock 36,914 $0.00 --
Gift Common stock 36,914 $0.00 --
Sale Common stock 2,000 $20.97 $42K
Holdings After Transaction: Common stock — 664,539 shares (Direct, null); Common stock — 36,914 shares (Indirect, See Footnote)
Footnotes (1)
  1. These transfers were made on the same date as bona fide gifts. Includes 615,625 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. These securities were transferred by the reporting person to the Rogers Stepien Family Revocable Trust, for which the reporting person and his spouse are co-trustees. These securities are held by the Rogers Stepien Family Revocable Trust, for which the reporting person and his spouse are co-trustees.
Open-market sale 2,000 shares at $20.97 Common stock sale on June 4, 2026
Gifts of common stock 104,212 shares Total bona fide gifts on June 4, 2026
Direct holdings after transactions 625,625 shares Common stock directly owned post-transaction
Indirect trust holdings 36,914 shares Common stock held by family revocable trust
Restricted stock units 615,625 RSUs Each RSU represents a contingent right to one share
restricted stock units financial
"Includes 615,625 restricted stock units, each of which represents a contingent right to receive one share"
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.
bona fide gift financial
"transaction_code_description": "Bona fide gift""
A bona fide gift is a genuine, voluntary transfer of money, property, or benefits from one party to another made without expectation of repayment, services, or hidden conditions. Investors care because such gifts can affect company disclosures, related‑party transaction rules, tax treatment, and perceived conflicts of interest; think of it like someone giving you a present with no strings attached — but on a corporate scale, auditors and regulators need to verify it really is unconditional.
revocable trust financial
"Rogers Stepien Family Revocable Trust, for which the reporting person and his spouse are co-trustees"
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.
open-market sale financial
"transaction_action": "open-market sale""
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.
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SEC Form 4
FORM 4UNITED 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*
Stepien Thomas M

(Last)(First)(Middle)
1180 PAGE AVE.

(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)
XDirector10% Owner
XOfficer (give title below)Other (specify below)
Chief Executive Officer
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
06/04/2026
6. Individual or Joint/Group Filing (Check Applicable Line)
XForm 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)
CodeVAmount(A) or (D)Price
Common stock06/04/2026G30,384(1)D$0664,539(2)D
Common stock06/04/2026G36,914(3)D$0627,625(2)D
Common stock06/04/2026G36,914(3)A$036,914ISee Footnote(4)
Common stock06/04/2026S2,000D$20.97625,625(2)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)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Explanation of Responses:
1. These transfers were made on the same date as bona fide gifts.
2. Includes 615,625 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.
3. These securities were transferred by the reporting person to the Rogers Stepien Family Revocable Trust, for which the reporting person and his spouse are co-trustees.
4. These securities are held by the Rogers Stepien Family Revocable Trust, for which the reporting person and his spouse are co-trustees.
Remarks:
/s/ Ricardo C. Rodriguez, attorney-in-fact on behalf of Thomas M Stepien06/05/2026
** Signature of Reporting PersonDate
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)

FAQ

What did Amprius Technologies (AMPX) CEO Thomas Stepien do in this Form 4 filing?

Thomas Stepien reported both a small stock sale and several gifts of Amprius shares. He sold 2,000 common shares at $20.97 each and made bona fide gifts totaling 104,212 shares, including transfers involving a family revocable trust.

How many Amprius (AMPX) shares did the CEO sell and at what price?

The CEO sold 2,000 shares of Amprius common stock at $20.97 per share in an open-market transaction. This represents a relatively small portion of his total reported holdings following the transactions disclosed in the Form 4.

How many Amprius (AMPX) shares did the CEO gift and to whom?

Thomas Stepien reported bona fide gifts totaling 104,212 Amprius common shares. Footnotes explain that certain securities were transferred to, and are held by, the Rogers Stepien Family Revocable Trust, for which he and his spouse serve as co-trustees.

What are the CEO’s Amprius (AMPX) share holdings after these transactions?

After the transactions, the CEO directly holds 625,625 Amprius common shares and indirectly holds 36,914 shares through the family revocable trust. Footnotes also note 615,625 restricted stock units that could convert into shares if vesting conditions are satisfied.

Does the Amprius (AMPX) CEO still have restricted stock units after this Form 4?

Yes. A footnote states his position includes 615,625 restricted stock units, each representing a contingent right to receive one Amprius common share, subject to applicable vesting schedules and conditions specified in the equity award agreements.