WESTPHAL MARK W - Insider Non-Derivative Transactions at Post Holdings, Inc. (POST) - (SEC)
Updated on January 3, 2026.
According to recent SEC insider information filed on Nov 18, 2025, WESTPHAL MARK W's relationship to Post Holdings, Inc. (POST) is Officer (PRES., FOODSERVICE), and currently has 197,756 shares of Common Stock.
The chart below shows the number of shares owned, and the table shows the recent insider transactions.
You can see similar information for other POST insiders.
Related Topics: SEC Topic List.
Data Source: SEC.
WESTPHAL MARK W - Insider Non-Derivative Transactions of POST Common Stock
WESTPHAL MARK W - Insider Non-Derivative Transactions at POST
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| Date | Transaction | No. of Shares | Price Per Share | Shares Owned After Transactions |
|---|---|---|---|---|
| Nov 19, 2025 | Acquisition -- (Common Stock) | 16682 | 0 | 194513 |
| Nov 19, 2025 | Acquisition -- (Common Stock) | 3243 | 0 | 197756 |
| Nov 16, 2025 | F -- (Common Stock) | 2521 | 106.7 | 177831 |
| Nov 15, 2025 | F -- (Common Stock) | 2757 | 106.34 | 180352 |
| Nov 13, 2025 | F -- (Common Stock) | 1413 | 106.02 | 180521 |
| Nov 13, 2025 | M -- (Common Stock) | 3097 | 0 | 181934 |
| Nov 13, 2025 | F -- (Common Stock) | 2171 | 106.02 | 183109 |
| Nov 13, 2025 | M -- (Common Stock) | 4759 | 0 | 185280 |
| Oct 23, 2025 | F -- (Common Stock) | 19658 | 107.19 | 178837 |
| Oct 23, 2025 | Acquisition -- (Common Stock) | 43108 | 0 | 198495 |
| Nov 17, 2024 | F -- (Common Stock) | 2749 | 106.14 | 155387 |
| Nov 17, 2024 | M -- (Common Stock) | 6027 | 0 | 158136 |
| Nov 16, 2024 | F -- (Common Stock) | 2521 | 107.78 | 152109 |
| Nov 15, 2024 | F -- (Common Stock) | 4941 | 109.47 | 154630 |
| Nov 15, 2024 | F -- (Common Stock) | 2757 | 109.47 | 159571 |
| Oct 22, 2024 | F -- (Common Stock) | 21436 | 115.21 | 162328 |
| Oct 22, 2024 | Acquisition -- (Common Stock) | 47008 | 0 | 183764 |
| Nov 18, 2023 | F -- (Common Stock) | 2940 | 84.21 | 130729 |
| Nov 17, 2023 | F -- (Common Stock) | 2749 | 85.39 | 133669 |
| Nov 17, 2023 | M -- (Common Stock) | 6027 | 0 | 136756 |
| Nov 16, 2023 | F -- (Common Stock) | 4724 | 85.5 | 136418 |
| Nov 16, 2023 | F -- (Common Stock) | 2520 | 85.5 | 141142 |
| Nov 15, 2023 | Acquisition -- (Common Stock) | 18133 | 0 | 132827 |
| Nov 15, 2023 | Acquisition -- (Common Stock) | 10835 | 0 | 143662 |
| Oct 25, 2023 | F -- (Common Stock) | 18168 | 80.91 | 114694 |
| Oct 25, 2023 | Acquisition -- (Common Stock) | 39840 | 0 | 132862 |
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