Post Holdings insider logs PRSU vesting and tax-share surrender

Rhea-AI Filing Summary

Post Holdings (POST) reported an insider transaction on a Form 4 for EVP, GC & CAO, Secretary Diedre J. Gray. She acquired 46,852 common shares at $0 upon payout of earned PRSUs under Rule 16b-3, with the award tied to relative total shareholder return for the period from October 1, 2022 through September 30, 2025. She then surrendered 20,639 shares at $107.19 to cover tax withholding associated with the vesting. After these transactions, holdings are 45,538 shares direct, plus 123,929 by trust and 45,839 by spouse's trust.

Insider Trade Summary

4 transactions reported

Mixed 4 txns

Insider GRAY DIEDRE J

Role EVP, GC & CAO, SECY

Type	Security	Shares	Price	Value
Grant/Award	Common Stock	46,852	$0.00	--
Tax Withholding	Common Stock	20,639	$107.19	$2.21M
holding	Common Stock	--	--	--
holding	Common Stock	--	--	--

Holdings After Transaction: Common Stock — 66,177 shares (Direct); Common Stock — 123,929 shares (Indirect, By Trust)

Footnotes (1)

1. Acquisition of shares pursuant to Rule 16b-3 upon payout of earned performance share award ("PRSUs") under a shareholder approved equity plan. The payout was based on the level of achievement of the performance goal of relative total shareholder return percentile rank for the performance period October 1, 2022 through September 30, 2025. Surrender of shares in payment of tax withholding due as a result of the vesting of 46,852 PRSUs in accordance with Rule 16b-3.

Form 4 Insider Transactions: What Each Field Means →

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
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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^*

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)
10/22/2025

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	10/22/2025		A		46,852(1)	A	$0	66,177	D
Common Stock	10/22/2025		F		20,639(2)	D	$107.19	45,538	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

Explanation of Responses:

1. Acquisition of shares pursuant to Rule 16b-3 upon payout of earned performance share award ("PRSUs") under a shareholder approved equity plan. The payout was based on the level of achievement of the performance goal of relative total shareholder return percentile rank for the performance period October 1, 2022 through September 30, 2025.

2. Surrender of shares in payment of tax withholding due as a result of the vesting of 46,852 PRSUs in accordance with Rule 16b-3.

Remarks:

	/s/ Diedre J. Gray	10/24/2025
	** 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).
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.

FAQ

What did POST's insider report on Form 4?

Diedre J. Gray reported vesting of 46,852 PRSUs and the surrender of 20,639 shares for tax withholding.

How many POST shares were acquired and at what price?

46,852 shares were acquired at $0 upon payout of earned PRSUs under Rule 16b-3.

What shares were surrendered and at what price?

20,639 shares were surrendered at $107.19 to cover tax withholding tied to the PRSU vesting.

What are the insider's current POST holdings after the transactions?

45,538 shares direct, 123,929 by trust, and 45,839 by spouse's trust.

What performance period governed the PRSU payout?

The award was based on relative total shareholder return for Oct 1, 2022–Sep 30, 2025.

What rule applies to these equity transactions?

They are reported as Rule 16b-3 transactions under a shareholder-approved equity plan.