Mark W. Westphal is President at Post Holdings, Inc. (POST). They have made 2 open-market trades across 1 company since 2019, most recently 2025-11-18.
CIK 0001730096
Unrated. We grade insiders only on stock they chose to buy on the open market. Grants, option exercises and vesting say nothing about timing, so they don't count — which is why someone can file often and still have no grade. It isn't a bad sign: unrated buys beat every graded tier below A.
2 open-market purchases totalling $366K since 2019, never a sale. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| POST | 194,513 | $15.3M |
Shares reported on the most recent Form 4, priced at the 2025-11-20 close.
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.