Michelle Marie Atkinson - 16 Mar 2026 Form 4 Insider Report for Post Holdings, Inc. (POST)

Reporting relationship: Director
Issuer ticker: POST
Reported as of: 16 Mar 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 18 Mar 2026, 17:40:41 UTC
Prior SEC filing: 16 Mar 2026
Next SEC filing: 02 Apr 2026
Source filing: View source filing
Reporting owner signature: /s/ Diedre. J. Gray, Attorney-in-Fact

Key filing fact

Michelle Marie Atkinson filed Form 4 for Post Holdings, Inc. (POST) on 18 Mar 2026.

Key facts

This page summarizes Michelle Marie Atkinson's Form 4 filing for Post Holdings, Inc. (POST).
1 reported transaction and 0 derivative rows are listed below.
Accepted by SEC: 18 Mar 2026, 17:40.

Change

Previous filing in this sequence was filed on 16 Mar 2026.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0002113424 Primary reporting owner

Atkinson Michelle Marie

Relationship: Director
Address: C/O POST HOLDINGS, INC., 2503 S. HANLEY ROAD, ST. LOUIS
Signature: /s/ Diedre. J. Gray, Attorney-in-Fact
Signature date: 18 Mar 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

POST transaction

Common Stock

Award

Transaction value
Shares: +1,700
Change %
Price: $0.000000^*
Shares after: 1,700
Date: 16 Mar 2026
Ownership: Direct
Footnotes: F1

POST holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 2,100
Date: 16 Mar 2026
Ownership: By Family Trust

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 1 footnote

Footnote 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.