Mark W. Westphal - 18 Nov 2025 Form 4 Insider Report for Post Holdings, Inc. (POST)

Reporting relationship: PRES., FOODSERVICE
Issuer ticker: POST
Reported as of: 18 Nov 2025
Net transaction value: $0
SEC form: 4
Accepted by SEC: 20 Nov 2025, 17:30:40 UTC
Prior SEC filing: 18 Nov 2025
Source filing: View source filing
Reporting owner signature: /s/ Diedre J. Gray, Attorney-in-Fact

Key filing fact

Mark W. Westphal filed Form 4 for Post Holdings, Inc. (POST) on 20 Nov 2025.

Key facts

This page summarizes Mark W. Westphal's Form 4 filing for Post Holdings, Inc. (POST).
2 reported transactions and 0 derivative rows are listed below.
Accepted by SEC: 20 Nov 2025, 17:30.

Change

Previous filing in this sequence was filed on 18 Nov 2025.
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 0001730096 Primary reporting owner

WESTPHAL MARK W

Relationship: PRES., FOODSERVICE
Address: C/O POST HOLDINGS, INC., 2503 S. HANLEY ROAD, ST. LOUIS
Signature: /s/ Diedre J. Gray, Attorney-in-Fact
Signature date: 20 Nov 2025

Reported non-derivative transactions

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

POST transaction

Common Stock

Award

Transaction value: $0
Shares: +16,682
Change %: +9.4%
Price: $0.000000
Shares after: 194,513
Date: 18 Nov 2025
Ownership: Direct
Footnotes: F1

POST transaction

Common Stock

Award

Transaction value: $0
Shares: +3,243
Change %: +1.7%
Price: $0.000000
Shares after: 197,756
Date: 18 Nov 2025
Ownership: Direct
Footnotes: F2

POST holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 17,174
Date: 18 Nov 2025
Ownership: By 401(k) Plan

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

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 2 footnotes

Footnote F1

Each restricted stock unit ("RSU") represents a contingent right to receive one share of Post Holdings, Inc. ("Post") common stock. The RSUs were granted under the Post Holdings, Inc. Amended and Restated 2021 Long-Term Incentive Plan (the "A&R 2021 LTIP") in a transaction exempt under Rule 16b-3 and vest in equal annual increments over three years, subject to the terms of the award agreement.

Footnote F2

Each RSU represents a contingent right to receive one share of Post common stock. The RSUs were granted under the A&R 2021 LTIP 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.