William P Stiritz insider trades: Post Holdings (POST) stock buys and sales
Trades on the price chart
Daily close, with an arrow on each day they bought or sold
Companies
Where William reports to the SEC
and 1 more company
Open-market buys and sales
19 trades reported on SEC Form 4, newest first
| Date | Stock | Type | Shares | Price | Value | Holding | Reported |
|---|---|---|---|---|---|---|---|
| Sep 2, 2026 | POST | ↓ Sell | 384,132 | $84.06 | $32.3M | By Spouse | Sep 3, 2026 (1d) |
| Aug 19, 2025 | POST | ↑ Buy | 36,000 | $109.53 | $3.9M | Direct | Aug 21, 2025 (2d) |
| Jun 5, 2025 | POST | ↑ Buy | 186,740 | $109.11 | $20.4M | Direct | Jun 9, 2025 (4d) |
| Feb 8, 2019 | POST | ↑ Buy | 35,755 | $97.75 | $3.5M | Direct | Feb 12, 2019 (4d) |
| Feb 6, 2019 | POST | ↑ Buy | 134,059 | $96.71 | $13.0M | By Spouse | Feb 8, 2019 (2d) |
| Feb 12, 2018 | POST | ↑ Buy | 100,000 | $71.99 | $7.2M | Direct | Feb 14, 2018 (2d) |
| Nov 21, 2016 | POST | ↑ Buy | 100,000 | $75.68 | $7.6M | By Spouse | Nov 23, 2016 (2d) |
| Nov 21, 2016 | POST | ↑ Buy | 10,000 | $74.48 | $745K | By Daughter | Nov 23, 2016 (2d) |
| Nov 21, 2016 | POST | ↑ Buy | 10,000 | $74.45 | $744K | By Son | Nov 23, 2016 (2d) |
| Feb 9, 2016 | POST | ↑ Buy | 149,907 | $63.57 | $9.5M | By Spouse | Feb 9, 2016 (0d) |
| Feb 8, 2016 | POST | ↑ Buy | 199,735 | $63.77 | $12.7M | By Trust | Feb 9, 2016 (1d) |
| Feb 8, 2016 | POST | ↑ Buy | 200,000 | $63.59 | $12.7M | Direct | Feb 9, 2016 (1d) |
| Feb 18, 2009 | RAH | ↓ Sell | 55,000 | $62.37 | $3.4M | Direct | Feb 20, 2009 (2d) |
| Nov 14, 2008 | RAH | ↓ Sell | 181,800 | $66.56 | $12.1M | Direct | Nov 18, 2008 (4d) |
| Nov 14, 2008 | RAH | ↓ Sell | 61,100 | $67.75 | $4.1M | Direct | Nov 18, 2008 (4d) |
| Nov 14, 2008 | RAH | ↓ Sell | 57,100 | $66.05 | $3.8M | Direct | Nov 18, 2008 (4d) |
| Mar 31, 2006 | FD | ↑ Buy | 200,000 | $72.73 | $14.5M | Direct | Apr 4, 2006 (4d) |
| Mar 31, 2006 | FD | ↑ Buy | 50,000 | $73.44 | $3.7M | By wife | Apr 4, 2006 (4d) |
| Mar 31, 2006 | FD | ↑ Buy | 30,000 | $73.39 | $2.2M | By son | Apr 4, 2006 (4d) |
Each row is one filing's trades in one stock, summed. Shares and prices are as filed, before any later stock split.
Other POST insiders
Open-market trades in the last 12 months
About William P Stiritz's insider trades
William P Stiritz is an insider at Post Holdings (POST). Since Mar 31, 2006, William has reported 14 open-market purchases worth $112.4M and 5 sales worth $55.7M on SEC Form 4. In the last 12 months: 1 sale ($32.3M).
Their filings also include grants and awards (207 filings), option exercises (13 filings), gifts (6 filings), other transactions (4 filings). These aren't open-market trades and aren't counted above.
How to read insider trades
Officers, directors and owners of more than 10% of a company must report trades in its stock on SEC Form 4, usually within two business days. Purchases with their own money are the stronger signal: insiders sell for many reasons (taxes, diversification, a house), but buy for one. See every POST insider trade, the latest insider trades across the market, or cluster buys, when several insiders buy the same stock within days.