[Form 4] Post Holdings, Inc. Insider Trading Activity

Rhea-AI Filing Summary

Post Holdings (POST) reported insider equity activity by President & CEO and Director Robert V. Vitale. On 10/22/2025, he acquired 142,308 shares at $0 upon payout of earned performance share awards (PRSUs) under a shareholder‑approved plan pursuant to Rule 16b‑3. He then surrendered 62,687 shares at $107.19 to cover tax withholding tied to that vesting.

Following these transactions, he beneficially owns 914,681 shares directly. He also reports indirect holdings of 6,870 shares by a 1994 Trust, 114,400 shares by a 2020 Family Trust (Robert Vitale), and 104,850 shares by a 2020 Family Trust (Spouse).

Insights

Corporate governance analyst

Routine PRSU vesting with tax withholding; ownership updated.

The filing reflects standard executive compensation mechanics. The CEO received 142,308 PRSUs upon certification of performance for the period from October 1, 2022 through September 30, 2025, consistent with Rule 16b‑3 and a shareholder‑approved plan. A portion, 62,687 shares, was surrendered to satisfy tax withholding obligations at $107.19.

This is administrative rather than a market sale, and it updates direct beneficial ownership to 914,681 shares, with additional indirect holdings via family trusts. Any market impact depends on normal trading dynamics; the filing itself does not indicate open‑market buying or selling beyond the tax withholding surrender.

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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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^*

VITALE ROBERT V

(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)

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

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		142,308(1)	A	$0	977,368	D
Common Stock	10/22/2025		F		62,687(2)	D	$107.19	914,681	D
Common Stock								6,870	I	By 1994 Trust
Common Stock								114,400	I	By 2020 Family Trust (Robert Vitale)
Common Stock								104,850	I	By 2020 Family Trust (Spouse)

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 142,308 PRSUs in accordance with Rule 16b-3.

Remarks:

	/s/ Diedre J. Gray, Attorney-in-Fact	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 insider transaction did POST report for Robert V. Vitale?

He acquired 142,308 shares via PRSU payout and surrendered 62,687 shares for tax withholding.

What price was used for the tax withholding surrender in POST's Form 4?

The shares were surrendered at $107.19 to cover tax withholding.

How many POST shares does the CEO own directly after these transactions?

He directly beneficially owns 914,681 shares following the reported transactions.

What indirect POST shareholdings are reported for the CEO?

Indirect holdings include 6,870 (1994 Trust), 114,400 (2020 Family Trust - Robert Vitale), and 104,850 (2020 Family Trust - Spouse).

What period determined the PRSU payout for POST's CEO?

The performance period was October 1, 2022 through September 30, 2025.

Was the POST CEO’s share acquisition an open-market purchase?

No. It was a Rule 16b-3 PRSU payout under a shareholder-approved plan, not an open-market buy.