As of March 23, 2026, Post Holdings's top three insider holders are William P Stiritz (Other, 4.33Mn shares), Robert V Vitale (President Ceo, 987.34K shares), Mark W Westphal (Pres., Foodservice, 197.76K shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| William P Stiritz | 4,334,667 | 0 | 19 Dec, 2025 | |
| Robert V Vitale | President Ceo | 987,338 | 0 | 20 Nov, 2025 |
| Mark W Westphal | Pres., Foodservice | 197,756 | 0 | 20 Nov, 2025 |
| Jeff A Zadoks | Evp Coo | 0 | 152,740 | 03 Dec, 2025 |
| Robert V Vitale | President Ceo | 0 | 129,250 | 07 Mar, 2024 |
| David P Skarie | 56,991 | 0 | 05 Feb, 2026 | |
| Jeff A Zadoks | 37,977 | 0 | 18 Mar, 2026 | |
| Michelle Marie Atkinson | 1,700 | 0 | 18 Mar, 2026 |
* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.
| Transaction Date | Insider Name | Security Class | Transaction Type | Shares Traded | Price | Shares Remaining | Ownership | Code |
|---|---|---|---|---|---|---|---|---|
| 16 Mar, 2026 | Jeff A Zadoks | Common Stock | A | 1,700 | $0.00 | 37,977 | D | A |
| 16 Mar, 2026 | Michelle Marie Atkinson | Common Stock | A | 1,700 | $0.00 | 1,700 | D | A |
| 27 Feb, 2026 | David P Skarie | Post Holdings, Inc. Stock Equivalents | A | 125 | $106.30 | 32,955 | D | A |
| 03 Feb, 2026 | David P Skarie | Common Stock | A | 1,600 | $0.00 | 56,991 | D | A |
| 30 Jan, 2026 | David P Skarie | Post Holdings, Inc. Stock Equivalents | A | 130 | $102.31 | 32,838 | D | A |
| 02 Jan, 2026 | Jeff A Zadoks | Common Stock | D | 301 | $99.05 | 27,424 | D | F |
| 02 Jan, 2026 | Jeff A Zadoks | Common Stock | D | 420 | $99.05 | 27,004 | D | F |
| 02 Jan, 2026 | Jeff A Zadoks | Common Stock | A | 9,731 | $0.00 | 36,735 | D | M |
| 02 Jan, 2026 | Jeff A Zadoks | Common Stock | D | 458 | $99.05 | 36,277 | D | F |
| 02 Jan, 2026 | Jeff A Zadoks | Restricted Stock Units | D | 9,731 | $0.00 | 0 | D | M |
| 31 Dec, 2025 | David P Skarie | Post Holdings, Inc. Stock Equivalents | A | 135 | $99.05 | 32,712 | D | A |
| 17 Dec, 2025 | William P Stiritz | Common Stock | A | 10,703 | - | 4,345,370 | D | M |
| 17 Dec, 2025 | William P Stiritz | Common Stock | D | 10,703 | $101.19 | 4,334,667 | D | D |
| 18 Dec, 2025 | William P Stiritz | Common Stock | A | 170,001 | - | 4,504,668 | D | M |
| 18 Dec, 2025 | William P Stiritz | Common Stock | D | 170,001 | $101.81 | 4,334,667 | D | D |
| 17 Dec, 2025 | William P Stiritz | Post Holdings, Inc. Stock Equivalents | D | 10,703 | - | 170,001 | D | M |
| 18 Dec, 2025 | William P Stiritz | Post Holdings, Inc. Stock Equivalents | D | 170,001 | - | 0 | D | M |
| 16 Dec, 2025 | William P Stiritz | Post Holdings, Inc. Stock Equivalents | A | 58 | $98.93 | 180,722 | D | A |
| 01 Dec, 2025 | Jeff A Zadoks | Common Stock | D | 30,000 | $0.00 | 27,725 | D | G |
| 01 Dec, 2025 | Jeff A Zadoks | Common Stock | A | 30,000 | $0.00 | 152,740 | I | G |