Thompson John Wendell’s SEC Form 4 filings show a sell-only stance across a single holding, Rubrik (RBRK). Across 96 reported trades, he has recorded roughly $12.66 million in open-market sales and zero buys. None of the activity includes purchases on the open market or acquisitions of shares.
The recent pattern is consistent. In the three most recent monthly cycles, July 1, August 3, and September 1, 2026, Wendell filed multiple linked transactions on RBRK. Each cycle begins with option exercises (code M) and conversions (code C), which produce no cash, and those are immediately followed by a cluster of open-market sales. The September filings include six sales totaling $991,728 on September 1. In August, three sales of roughly $1.0 million were booked, and in July, six sales brought in about $1.1 million.
The sales are not large block disposals. Individual prints in the recent slate run from $9,030 to $579,670, with most under $150,000. The total across all 96 trades is $12.66 million, meaning most of the cash has come through this kind of steady, high-frequency selling. There were no purchases for cash in the data. The absence of any buy-side signal, combined with the mechanical option exercises and periodic sales across the summer of 2026, points to a continuous reduction of position rather than a one-off distribution.
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