Transaction · 0001052058-26-000005

STIRITZ WILLIAM P

STIRITZ WILLIAM P, CHAIR, reported an open-market or private sale at Post Holdings, Inc. involving 277707.000000 shares for an estimated $23391260.61. Reported holdings after the transaction were 228.000000 shares. A 10b5-1 reference was not detected in the stored filing text.

Open-market sellSEC transaction code SCHAIR
POSTPost Holdings, Inc.
Filing timeSep 03
Trade dateSep 02, 2026
Filing · SECView on SEC
InsiderProfile

Price performance since filing

Close on the filing date, the pre-filing context, and the forward return at standard windows
Price at filing
$84.26
Pre-filing
1mo ago +7.1%1w ago -3.2%1d ago -0.8%
Returns since
7d +0.0%30d +0.0%90d +0.0%180d +0.0%1y +0.0%

POST price since this filing

30 days of pre-filing context and vertical markers at the filing date plus 7d / 30d / 90d / 180d / 1y afterwards
POST since 2026-09-03Filed yesterday · 1 day of post-filing data
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Filing datePost-filing windows (7d, 30d, 90d, 180d, 1y)30 days of pre-filing context

Transaction facts

Stored Form 4 columns with their raw values

Non-derivative
Type
Sell
Code S
Identifier
0001052058-26-000005
Common Stock
Transaction date
Sep 02, 2026
Filed Sep 03, 2026, 09:12 PM · 1d delay
Shares
277k sh
$8.42k per share
Estimated value
-$2.33B
Computed from shares × price
Holdings after
228 sh
Indirect · By Spouse

Filing signal explanations

Badges describe filing facts only — not predictions.

Cluster 14dRepeat 30dPattern $10.0MLarge $100M
Large Holdings Reduction Large Sale Repeat Seller
+4score
Filing-only score

+4

Compact filing score computed from stored Form 4 facts. Version v1.

Neutral filing signal

This filing is broadly neutral on the filing-only scale. The Form 4 facts do not strongly tilt positive or negative.

Reported relationships & other filings

Form 4 relationship flags and nearby filing context

Reported roles

No officer title

Officer NoDirector No10% NoOther Yes
Footnotes & amended
  1. F1

    The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $83.26 to $84.17 per share. The Reporting Person undertakes to provid…

  2. F2

    The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $84.29 to $84.795 per share.

  3. F3

    The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $83.64 to $84.635 per share.

Original filing · 0001052058-26-000005
Related transactions

0 other filings

Same reporting owner
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POST