Post Holdings director reports 2,100-share holding

Post Holdings, Inc. director Michelle Marie Atkinson filed a Form 3 showing an existing indirect holding of the company’s common stock.

Accepted by SEC EDGAR 03/16/2026 - 05:01 PM EDT Learn about SEC filing dates

Rhea-AI Filing Summary

Post Holdings, Inc. director Michelle Marie Atkinson filed a Form 3 showing an existing indirect holding of the company’s common stock. The filing reports beneficial ownership of 2,100 shares of common stock as of 2026-03-15, held indirectly through a family trust.

Insider Trade Summary

Holdings reported, no transactions

Holdings

Insider Atkinson Michelle Marie

Role Director

Type	Security	Shares	Price	Value
Holding	Common Stock	--	--	--

Holdings: Common Stock — 2,100 shares (Indirect, By Family Trust)

FAQ

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

What does Michelle Marie Atkinson’s Form 3 for POST report?

The Form 3 reports that director Michelle Marie Atkinson has an existing indirect holding of 2,100 shares of Post Holdings, Inc. common stock as of March 15, 2026, with the shares held through a family trust.

How many Post Holdings (POST) shares does the director report owning?

The filing shows beneficial ownership of 2,100 shares of Post Holdings, Inc. common stock. These shares are reported as indirectly owned, rather than directly held, and are attributed to a family trust associated with the director.

Is the ownership in POST common stock direct or indirect in this Form 3?

The ownership is reported as indirect. The Form 3 states that 2,100 shares of Post Holdings, Inc. common stock are held “By Family Trust,” indicating the director’s beneficial interest is through that trust structure.

Does Michelle Marie Atkinson’s Form 3 show any POST share purchases or sales?

No specific purchases or sales are identified. The Form 3 entry is categorized as a holding, with 2,100 shares of Post Holdings, Inc. common stock reported as indirectly owned through a family trust, and no buy or sell code is provided.

What security is reported in Michelle Marie Atkinson’s POST Form 3?

The Form 3 covers Post Holdings, Inc. common stock. It lists a total of 2,100 common shares beneficially owned following the reported holding entry, held indirectly via a family trust associated with the director.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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SEC Form 3

FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

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:			3235-0104
Estimated average burden
hours per response:			0.5

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 MO 63144

(City) (State) (Zip)

2. Date of Event Requiring Statement (Month/Day/Year)
03/15/2026

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

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

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

5. 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 Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)
Common Stock	2,100	I	By Family Trust

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

Remarks:

See attached Exhibit 24 - Power of Attorney.

	/s/ Diedre J. Gray, Attorney-in-Fact	03/16/2026
	** 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 5 (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.