POST insider update: 48,718 PRSUs vested; $107.19 tax surrender

Rhea-AI Filing Summary

Post Holdings (POST) reported an insider equity transaction by its EVP & COO following a performance award payout. On 10/22/2025, 48,718 shares of common stock were acquired at $0 upon the vesting of performance-based RSUs granted under a shareholder‑approved plan tied to relative total shareholder return for the period October 1, 2022 through September 30, 2025.

On the same date, 21,461 shares were surrendered at $107.19 to cover tax withholding associated with the vesting. After these transactions, the executive directly owned 46,305 common shares. Additional indirect holdings were reported as 1,256 shares by a Family Trust, 68,145 shares by a SLAT, and 122,740 shares by the spouse.

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^*

Zadoks Jeff A

(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 & COO

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		48,718(1)	A	$0	67,766	D
Common Stock	10/22/2025		F		21,461(2)	D	$107.19	46,305	D
Common Stock								1,256	I	By Family Trust
Common Stock								68,145	I	By SLAT
Common Stock								122,740	I	By 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 48,718 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 did POST’s EVP & COO report on Form 4?

A vesting of 48,718 performance-based RSUs into common stock and a tax withholding share surrender of 21,461 shares on 10/22/2025.

What price was used for the tax withholding surrender?

Shares were surrendered at $107.19 to satisfy tax withholding from the PRSU vesting.

How many POST shares does the executive own directly after the transactions?

Direct beneficial ownership is 46,305 common shares after the reported transactions.

What indirect holdings were reported by the POST executive?

Indirect holdings include 1,256 shares by a Family Trust, 68,145 by a SLAT, and 122,740 by the spouse.

What performance period governed the PRSU payout?

The PRSU payout was based on relative total shareholder return for October 1, 2022–September 30, 2025.

What rule governs these equity plan transactions?

The transactions were reported as pursuant to Rule 16b-3 under a shareholder‑approved equity plan.