Skip to main content
Livermore
Livermore
ZHEN

Post Holdings, Inc.

POST
Exchange
NYSE
Industry
Grain Mill Products
SEC CIK
0001530950

In the last 90 days, Post Holdings, Inc. insiders filed 0 open-market purchases and 1 sale; 415 institutions reported holding it in 13F filings for Q2 2026, worth $4.00B in total; no superinvestor holds it.

Holders of 5% or more of POST

Holders whose latest Schedule 13D or 13G filing reports 5% or more of Post Holdings, Inc., largest stake first. The change is against the holder's previous filing.

Holders of 5% or more of POST
HolderLatest formStakeChangeFirst filedLatest filingFiling
Vanguard Group Inc13G/A10.30%5.60M shares+0.71 ppfrom 9.59%Apr 30, 20252 filingsSep 8, 2025SEC
Stiritz William P13D/A8.30%4.66M shares–Feb 14, 20251 filingFeb 14, 2025SEC
Route One Investment Company, L.P.13G/A6.10%3.41M shares–Aug 13, 20251 filingAug 13, 2025SEC

Stakes are as of each holder's latest filing. Holders whose last filing was in the old format (before December 18, 2024) have no stake on record and are not listed, and after an acquisition or delisting holders usually stop filing.

13D and 13G filings

5 Schedule 13D and 13G filings on Post Holdings, Inc., newest first, including old-format filings without a stake.

Schedule 13D and 13G filings on POST
Filed (ET)FilerFormStakeChangeEvent dateFiling
Sep 8, 202511:06 AM ETVanguard Group Inc13G/A10.30%5.60M shares+0.71 ppfrom 9.59%Aug 29, 2025SEC
Aug 13, 20256:05 PM ETRoute One Investment Company, L.P.and 5 others13G/A6.10%3.41M shares–Jun 30, 2025SEC
Jul 15, 20254:03 PM ETDimensional Fund Advisors LP13G/A4.80%2.70M shares–Below 5%Jun 30, 2025SEC
Apr 30, 202511:23 AM ETVanguard Group Inc13G/A9.59%5.42M shares–Mar 31, 2025SEC
Feb 14, 20254:57 PM ETStiritz William P13D/A8.30%4.66M shares–Feb 13, 2025SEC

Form 144: proposed insider sales

Notices from officers, directors and other affiliates planning to sell Post Holdings, Inc. shares.

No Form 144 notices for Post Holdings, Inc. are on file.