William P. Stiritz - 15 Oct 2025 SCHEDULE 13D/A Report for Post Holdings, Inc. Common Stock, $0.01 par value (POST)

Filing Manager
William P. Stiritz
Reporting Manager
William P. Stiritz
Security
Post Holdings, Inc. Common Stock, $0.01 par value
Symbol
POST
Shares outstanding
52,505,032 shares
Disclosed Ownership
4,882,968 shares
Ownership
9.3%
Form type
SCHEDULE 13D/A
Filing time
15 Oct 2025, 17:09:18 UTC
Date of event
15 Oct 2025
Previous filing
14 Feb 2025
Next filing
05 Mar 2026
SEC
View on sec.gov

Quoteable Key Fact

"William P. Stiritz disclosed 9.3% ownership in Post Holdings, Inc. Common Stock, $0.01 par value (POST) on 15 Oct 2025."

Quick Takeaways

  • William P. Stiritz filed SCHEDULE 13D/A for Post Holdings, Inc. Common Stock, $0.01 par value (POST).
  • Disclosed ownership: 9.3%.
  • Date of event: 15 Oct 2025.

What Changed

  • Previous schedule filing date: 14 Feb 2025.
  • Current filing was accepted on 15 Oct 2025, 17:09.

Why This Matters

  • This page explains what this Schedule 13D/13G filing tells you before manager-level rows.
  • You can verify ownership claims directly against the original SEC filing.

Source Evidence

Backed by Schedule 13D/13G

Beneficial ownership values are sourced from the original SEC Schedule 13D/13G filing.

See Original Filing

Reporting Managers (1)

Name Ownership Shares Owned sole voting power shared voting power Signature Title CIK
William P. Stiritz 9.3% 4,882,968 4,498,836 384,132 /s/ William P. Stiritz William P. Stiritz 0001052058