David W Mason is a Chief Legal Officer who has filed 66 SEC Form 4 insider transactions across 2 companies since 2018. The most recent filing shows the insider disposed of $3.3M of SEMR on Apr 28, 2026. Across all open-market trades the lifetime net is −$5.6M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $3.8M across reported positions.

"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.