Post director granted 1,700 Post Holdings RSUs

Atkinson Michelle Marie reported acquisition or exercise transactions in this Form 4 filing.

Rhea-AI Filing Summary

Atkinson Michelle Marie reported acquisition or exercise transactions in this Form 4 filing.

Post Holdings director Michelle Marie Atkinson reported an equity award of 1,700 restricted stock units (RSUs) tied to Post Holdings, Inc. common stock. The RSUs were granted at no cash cost under the company’s Amended and Restated 2021 Long-Term Incentive Plan in a transaction exempt under Rule 16b-3.

Each RSU represents a contingent right to receive one share of common stock and vests in full on the first anniversary of the grant date, subject to the award agreement. After this grant, Atkinson holds 1,700 shares directly and 2,100 shares indirectly through a family trust.

Insider Trade Summary

Grant/Award: 1,700 shares

Grant/Award 2 txns

Insider Atkinson Michelle Marie

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Common Stock	1,700	$0.00	$0.00
holding	Common Stock	--	--	--

Holdings After Transaction: Common Stock — 1,700 shares (Direct); Common Stock — 2,100 shares (Indirect, By Family Trust)

Footnotes (1)

1. F1. Each restricted stock unit represents a contingent right to receive one share of Post Holdings, Inc. common stock. The restricted stock units were granted under the Post Holdings, Inc. Amended and Restated 2021 Long-Term Incentive Plan in a transaction exempt under Rule 16b-3 and vest in full on the first anniversary of the date of grant, subject to the terms of the award agreement.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What did Michelle Marie Atkinson report in her latest Form 4 for POST?

Michelle Marie Atkinson reported receiving an award of 1,700 restricted stock units linked to Post Holdings common stock. The award was granted at no cash cost under the company’s Amended and Restated 2021 Long-Term Incentive Plan and is exempt under Rule 16b-3.

How many Post Holdings (POST) shares does Michelle Marie Atkinson now hold?

Following the reported award, Michelle Marie Atkinson holds 1,700 shares directly and 2,100 shares indirectly through a family trust. These figures reflect the positions shown after the grant on the Form 4 for Post Holdings, Inc.

What are the vesting terms of Michelle Marie Atkinson’s new POST restricted stock units?

The restricted stock units vest in full on the first anniversary of the grant date. Each RSU represents a contingent right to receive one share of Post Holdings common stock, subject to the terms of the applicable award agreement.

Did Michelle Marie Atkinson buy or sell Post Holdings (POST) shares in this Form 4?

The Form 4 does not report any open-market purchases or sales. Instead, it shows a grant of 1,700 restricted stock units as compensation under Post Holdings’ long-term incentive plan, with no transaction price per share reported.

Under which plan were Michelle Marie Atkinson’s Post Holdings RSUs granted?

The restricted stock units were granted under the Post Holdings, Inc. Amended and Restated 2021 Long-Term Incentive Plan. The filing notes this grant is exempt under Rule 16b-3 and is governed by the specific terms of an award agreement.

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Accepted by SEC EDGAR 03/18/2026 - 05:40 PM Learn about SEC filing dates

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
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^*

Atkinson Michelle Marie

(Last) (First) (Middle)

C/O POST HOLDINGS, INC.

2503 S. HANLEY ROAD

(Street)

ST. LOUIS MISSOURI 63144

(City) (State) (Zip)

UNITED STATES

(Country)

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
	Officer (give title below)		Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
03/16/2026

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

X	Form 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)
			Code	V	Amount	(A) or (D)	Price
Common Stock	03/16/2026		A		1,700(1)	A	$0	1,700	D
Common Stock								2,100	I	By Family 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. Each restricted stock unit represents a contingent right to receive one share of Post Holdings, Inc. common stock. The restricted stock units were granted under the Post Holdings, Inc. Amended and Restated 2021 Long-Term Incentive Plan in a transaction exempt under Rule 16b-3 and vest in full on the first anniversary of the date of grant, subject to the terms of the award agreement.

Remarks:

	/s/ Diedre. J. Gray, Attorney-in-Fact	03/18/2026
	** 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.
* Form 4: SEC 1474 (03-26)