Time on boards
- Boards served
- 1
- Current seats
- 1
- Board service
- 4 years
- Director since
- 2023
4 years of board service in total across 1 board, counting each seat separately. Longest: Post Holdings Inc., 3 years.
Post Holdings Inc.
Director
Insider trades
All notable trades →From SEC Forms 4 and 5. Open-market purchases and sales are highlighted; grants, option exercises and shares withheld for tax are routine.
| Date | Company | Transaction | Shares | Price | Value |
|---|---|---|---|---|---|
| Sep 2, 2026 | Post Holdings Inc. | Open-market sale | −277,707 | $84.23 | $23,391,261 |
| Sep 2, 2026 | Post Holdings Inc. | Open-market sale | −228 | $85.01 | $19,382 |
| Sep 1, 2026 | Post Holdings Inc. | Open-market sale | −99,990 | $83.54 | $8,353,165 |
| Sep 1, 2026 | Post Holdings Inc. | Open-market sale | −6,207 | $84.63 | $525,298 |
| Dec 18, 2025 | Post Holdings Inc. | Option exercise | +170,001 | — | — |
| Dec 18, 2025 | Post Holdings Inc. | Sold back to the company | −170,001 | $101.81 | $17,307,781 |
| Dec 17, 2025 | Post Holdings Inc. | Option exercise | +10,703 | — | — |
| Dec 17, 2025 | Post Holdings Inc. | Sold back to the company | −10,703 | $101.19 | $1,083,060 |
| Aug 19, 2025 | Post Holdings Inc. | Open-market purchase | +36,000 | $109.53 | $3,943,080 |
| Jun 5, 2025 | Post Holdings Inc. | Open-market purchase | +186,740 | $109.12 | $20,377,069 |
| Feb 4, 2025 | Post Holdings Inc. | Grant or award | +2,500 | — | — |
| Jan 30, 2024 | Post Holdings Inc. | Grant or award | +2,700 | — | — |
| Jan 31, 2023 | Post Holdings Inc. | Grant or award | +2,700 | — | — |
Questions about William P. Stiritz
What boards is William P. Stiritz on?
William P. Stiritz sits on the board of Post Holdings Inc.
How long has William P. Stiritz served on boards?
Our records show at least 4 years of board service across 1 board, the earliest from 2023.
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