Mark W. Westphal

Mark W. Westphal appears in our data through filings on Post Holdings, Inc. shares, published by SEC (Form 4). Over a trading history stretching from 13 November 2018 to 18 November 2025, the count stands at 33 filings.

Purchases make up the whole of the open-market record (2 purchases, €320k). A purchase on the market is a deliberate choice to commit personal money, which is why it draws more attention than a grant. Outside the open market, there are 27 share grants and 4 option exercises.

The newest entry dates from 20 November 2025: a share grant, in Post Holdings, Inc. The last purchase on record was published on 25 August 2020, which is 2,247 days ago. Typically, a trade is published a median of 2 days after it takes place. For comparison, the SEC allows two business days to file a Form 4. These figures are compiled from regulatory filings published by SEC (Form 4). They describe what insiders did and are not a recommendation.