POST Post Holdings, Inc.

NYSE
$79.37

Post Holdings, Inc. (POST) Insider Activity

What the officers, directors and large holders did with their own shares. Only open-market purchases and sales count toward the totals — grants, option exercises and shares withheld for tax are compensation mechanics, not decisions, and they're listed separately below.

30D 90D 6M 1Y
Insider signal In line Selling ran in line with POST's own trailing one-year pace, with 0% of sale value under a prearranged plan.
Cluster activity 0 buyers in the last 30 days 0 buyers in the last 90 days 1 seller in the last 90 days
Insiders buying
1
1 transaction
Insiders selling
4
8 transactions
Purchases
$176.3K
1,800 shares
Sales
$34.9M
408,959 shares
Net activity
-$34.7M
purchases less sales

How much of that selling was preplanned? 0% planned / 100% discretionary

10b5-1 plan sales $0 0 transactions · 0 shares
Discretionary sales $34.9M 8 transactions · 408,959 shares

Largest single sale: $23.4M.

Where they traded

Buy Sell Dot area is proportional to transaction value.

Last open-market purchase: November 24, 2025 , by KEMPER DAVID W .

Recent open-market activity

Date Insider Role Action Shares Price Value Held after
STIRITZ WILLIAM P 2 fills Other Sell 277,935 $84.23 $23.4M 228 −99.9% of holding
STIRITZ WILLIAM P 2 fills Other Sell 106,197 $83.60 $8.9M 284,142 −27.2% of holding
CURL GREGORY L Director Sell 6,186 $105.05 $649.8K 15,107 −29.1% of holding
CURL GREGORY L Director Sell 6,983 $114.31 $798.2K 21,293 −24.7% of holding
HARPER BRADLY A SVP, CHIEF ACCTING OFFICER Sell 1,658 $96.69 $160.3K 11,441 −12.7% of holding
CATOGGIO NICOLAS PRES & CEO, PCB Sell 10,000 $100.21 $1.0M 75,542 −11.7% of holding
KEMPER DAVID W Director Buy 1,800 $97.93 $176.3K 31,522

Form 4s are due within two business days of a transaction, so this is close to real time — unlike the quarterly 13F data on the Institutional tab. A single large sale often reflects a prearranged 10b5-1 plan rather than a fresh view, so read a pattern of sales rather than any one of them.