Post Holdings insider: 8,300 and 5,422 RSUs vested; shares withheld

Rhea-AI Filing Summary

Post Holdings (POST) insider filing: EVP, GC & CAO, Secretary reported RSU vesting and related tax-withholding transactions on 11/12/2025. Two RSU grants converted to common stock: 8,300 and 5,422 shares at $0 per share (code M). To cover taxes, the filer surrendered 3,657 and 2,389 shares at $106.02 (code F), as permitted under Rule 16b-3.

Following these transactions, the filer directly owns 53,214 common shares. Indirect holdings are 123,929 shares by Trust and 45,839 shares by Spouse's Trust. Footnotes indicate the 8,300 RSUs vested on the first anniversary of grant, while the 5,422 RSUs vest one-third annually over three years.

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

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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^*

GRAY DIEDRE J

(Last) (First) (Middle)

C/O POST HOLDINGS, INC.

2503 S. HANLEY ROAD

(Street)

ST. LOUIS MO 63144

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Post Holdings, Inc. [ POST ]

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

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	EVP, GC & CAO, SECY

3. Date of Earliest Transaction (Month/Day/Year)
11/12/2025

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

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

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

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)
			Code	V	Amount	(A) or (D)	Price
Common Stock	11/12/2025		M		8,300	A	$0	53,838	D
Common Stock	11/12/2025		F		3,657(1)	D	$106.02	50,181	D
Common Stock	11/12/2025		M		5,422	A	$0	55,603	D
Common Stock	11/12/2025		F		2,389(2)	D	$106.02	53,214	D
Common Stock								123,929	I	By Trust
Common Stock								45,839	I	By Spouse's Trust

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)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Restricted Stock Units	(3)	11/12/2025		M			8,300	(4)	(4)	Common Stock	8,300	$0	0	D
Restricted Stock Units	(3)	11/12/2025		M			5,422	(5)	(5)	Common Stock	5,422	$0	10,846	D

Explanation of Responses:

1. Surrender of shares in payment of tax withholding due as a result of the vesting of 8,300 restricted stock units ("RSUs") in accordance with Rule 16b-3.

2. Surrender of shares in payment of tax withholding due as a result of the vesting of 5,422 RSUs in accordance with Rule 16b-3.

3. Each RSU represents a contingent right to receive one share of Post Holdings, Inc. common stock. The RSUs were granted under the Post Holdings, Inc. Amended and Restated 2021 Long-Term Incentive Plan in a transaction exempt under Rule 16b-3.

4. The RSUs vested on the first anniversary of the date of grant without any action on the part of the participant.

5. One-third of the RSUs vest on each of the first, second and third anniversaries of the date of grant without any action on the part of the participant, subject to the terms of the applicable award agreement.

Remarks:

	/s/ Diedre J. Gray	11/14/2025
	** 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).
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FAQ

What did POST’s insider report on Form 4?

An officer reported RSU vesting into common stock and share surrenders to cover tax withholding on 11/12/2025.

How many RSUs vested for POST’s officer?

Two tranches vested into common stock: 8,300 shares and 5,422 shares (code M).

How many shares were surrendered for taxes and at what price?

Shares surrendered were 3,657 and 2,389 at $106.02 per share (code F).

What are the officer’s current direct holdings in POST?

Direct beneficial ownership is 53,214 common shares after the reported transactions.

What indirect holdings were reported?

Indirect holdings include 123,929 shares by Trust and 45,839 shares by Spouse's Trust.

What is the vesting schedule for the RSUs?

The 8,300 RSUs vested on the first anniversary; the 5,422 RSUs vest one‑third on each of the first three anniversaries.

Which POST executive filed the Form 4?

The filer is the company’s EVP, GC & CAO, Secretary.