Latest filingSep 03, 2026Most recent Form 4
POST
Post Holdings, Inc.
NYSEConsumer StaplesGrain Mill Products
Insider activity for last month from 08/05 to 09/05. Counts use processed Form 4 rows. Purchase and sale metrics use codes P and S; totals remain unknown when any matching value is missing. Rows without a usable transaction date cannot be assigned to a rolling period and are excluded.
Total buying$00 buys
Total selling$3.22B4 sells
Net open-market-$3.22B9 insiders
Open-market mix
Buy vs sell distribution by transaction countInsider activity report
Monthly open-market purchase and sale counts Buys Sells
Transaction codes
By Form 4 transaction code in selected period16transactions
- A · Grants / awards · dominant8 · 50%
- G · Gifts4 · 25%
- S · Open-market sells4 · 25%
Activity by reported role
A joint filing can contribute to multiple roles16transactions
- Director · dominant12 · 75%
- CHAIR4 · 25%
Distinct insiders active
Reporting-owner CIKs by month · peak Aug 2026 (8)Aug 2026Sep 2026
Reported Holdings After
Separated by insider, security, and ownership typeStiritz William PCommon Stock · Indirect · By Spouse
0Sep 02, 2026
Zadoks Jeff ACommon Stock · Direct
1,800Aug 25, 2026
Zadoks Jeff ACommon Stock · Indirect · By Spouse
0Aug 25, 2026
Zadoks Jeff ACommon Stock · Indirect · By SLAT (Spouse)
74,360Aug 25, 2026
Zadoks Jeff ACommon Stock · Indirect · By SLAT (Reporting Person)
122,740Aug 25, 2026
Atkinson Michelle MariePost Holdings, Inc. Stock Equivalents · Direct
669.672Aug 31, 2026
Burwell Dorothy MPost Holdings, Inc. Stock Equivalents · Direct
8,872.064Aug 31, 2026
Curl Gregory LPost Holdings, Inc. Stock Equivalents · Direct
8,060.007Aug 31, 2026
These are reported post-transaction holdings, not company-wide ownership percentages. Securities, indirect vehicles, and amendments are kept separate.
Filing activity heatmap
Each cell is one day · intensity = transactions · buys green, sells redAug 05 → Sep 05
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Filing detail checks
Secondary metrics for the selected periodFiling-only signals
Deterministic matches in the selected period
POST transaction history
Filters apply within this company and selected period by default| Ticker | Insider | Role | Type | Shares | Value | Code | Signals | 90d return | Filed | Trans date |
|---|---|---|---|---|---|---|---|---|---|---|
No transactions match your filtersOnce the backend ingests and parses SEC filings, they will appear here. Try removing a filter or picking a wider date range. | ||||||||||
Post Holdings, Inc. Insider Activity FAQ
SEC Form 4 contextWho recently reported transactions at Post Holdings, Inc.?
STIRITZ WILLIAM P, Zadoks Jeff A, SKARIE DAVID P, JOHNSON JENNIFER KUPERMAN, KEMPER DAVID W, ERB THOMAS C, CURL GREGORY L, BURWELL DOROTHY M, Atkinson Michelle Marie.
When was the latest reported open-market purchase?
No code-P purchase is available for this period.
When was the latest reported open-market sale?
Stiritz William P reported a sale on Sep 02, 2026 valued at $1.93M. Read the SEC filing.
What is the recent purchase and sale balance?
Net open-market selling in the selected period was $32,289,105.90. Sales can occur for many non-investment reasons.
Where can I see the original SEC filing?
Every transaction row and latest-activity fact links to its original SEC filing.
What do these Form 4 transaction codes mean?
P and S generally describe open-market or private purchases and sales. A, D, F, M, X, G, J, and V describe awards, issuer dispositions, tax withholding, exercises, gifts, other transactions, and voluntary early reports; review each filing and its footnotes for context.