Casper Mark, EVP and Chief Legal Officer at Marvell Technology (MRVL), has filed 70 Form 4 transactions, all in the single company. The pattern is one-sided: zero open-market purchases and $4.82 million in open-market sales. The recent activity clusters around April 2026, when Mark sold $1.16 million on April 2, $755,205 on April 6, and $1.36 million on April 17. Those three sales total roughly $3.27 million and are the only open-market sales in the recent window.
The rest of the filings are mechanical. On April 15, 2026, Mark exercised options (code M, $0 value) and had shares withheld to cover taxes (code F), with the largest single withholding at $5.20 million. Similar option exercises and tax withholdings appear on July 15 and October 15, 2026, each paired with three F transactions ranging from $129,325 to $194,439. A grant (code A) on April 15 and a gift (code G) on June 15 carried no dollar value.
The data shows a consistent seller bias in discretionary trades, but the bulk of the dollar volume is non-discretionary. The $5.20 million F transaction on April 15 dwarfs the open-market sales, and it is an automatic consequence of option exercises, not a decision to exit a position. Mark has not bought a single share on the open market across all 70 filings. The most recent entries, from October 15, 2026, are all option exercises and tax withholdings, with no new sales after the April cluster.
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