Derivative exercise or conversion — not an open-market buy.
Written from the filing's own figures. OQRO describes what was reported and never tells you what to buy or sell
View the official recordSEC Form 4 — Statement of Changes in Beneficial OwnershipAll the details
Dates, kept separate
Transaction date
Dec 18, 2025
Reporting period
Not applicable
Filed with the SEC
Dec 20, 2025
InsiderOption exercise
Context
Classification
option exercise
Code M — exercise or conversion of a derivative security
Planned / mechanical clue
None found in footnotes
Only flagged when a footnote says so; never inferred
Source receipt
Record ID
0001052058-25-000020
Filed / recorded
Dec 20, 2025, 12:19 AM UTC
Added to OQRO
Oct 6, 2026, 8:46 PM UTC
Parser
form4-xml-v2
Data quality
Verified: identifiers matched exactly
Issuer
Post Holdings, Inc.
Issuer CIK
1530950
Ticker
POST
Reporting person
STIRITZ WILLIAM P
Relationship
Other
Security
Common Stock
Table
Non-derivative (Table I)
Transaction date
Dec 18, 2025
Transaction code
M
Shares / units
170,000.797
Acquired / disposed
Acquired (A)
Shares owned after
4,504,667.797
Ownership form
Direct
Amendment
No
Footnotes from the filing
Upon Reporting Person's retirement from the Board of Directors of Post Holdings, Inc. ("Post") on December 16, 2025, the Reporting Person's earned retainers as a Director of Post that were deferred into Post stock equivalents under Post's Deferred Compensation Plan for Non-Management Directors (the "Plan") were converted into cash as soon as administratively practicable following his retirement pursuant to the terms of the Plan. Each stock equivalent was the economic equivalent of one share of Post common stock. The cash will be distributed to the Reporting Person in accordance with the applicable elections previously made by the Reporting Person, including lump sum payout at his retirement, in five annual installments following his retirement and in ten annual installments following his retirement.
