SEC FORM 3

SEC FORM 3 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

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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

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	36,277⁽¹⁾	D
Common Stock	686	I	By Family Trust
Common Stock	48,145	I	By SLAT
Common Stock	122,740	I	By Spouse

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)
1. Title of Derivative Security (Instr. 4)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	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)

Explanation of Responses:

1. This balance includes 23,888 restricted stock units ("RSUs"), (i) which were previously granted to Reporting Person in connection with his prior roles as an employee of Post Holdings, Inc. (the "Issuer") under either the Post Holdings, Inc. 2021 Long-Term Incentive Plan or the Post Holdings, Inc. Amended and Restated 2021 Long-Term Incentive Plan and (ii) the vesting of which accelerated according to the terms of the award agreements underlying the RSUs in conjunction with his retirement as an employee of the Issuer on January 2, 2026 (the "Retirement Date"). Each RSU represents a right to receive one share of the Issuer's common stock. The settlement of these RSUs, reduced for the withholding of certain taxes due at that time, will occur following a six-month delay after the Retirement Date, as required under Section 409A of the Internal Revenue Code.

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.

New insider Zadoks Jeff A claimed ownership of 207,848 shares (SEC Form 3)