Insider buying on Oct 23, 2025

On Oct 23, 2025, 22 insiders at 18 companies filed 33 purchases reported on Form 4, worth $23.5M in all, with a median purchase of $25.0K. The largest was Xia Yu, Director of Summit Therapeutics Inc. (SMMT), who reported buying 533,617 shares worth $10.0M. Officers accounted for 15 purchases, directors who are not officers for 8, and 10% owners with no board or officer role for 8. Chief executives and chief financial officers filed 8 purchases: Duggan Robert W, Co-Chief Executive Officer, Director, 10% owner of Summit Therapeutics Inc. (SMMT); Zanganeh Mahkam, Co-Chief Executive Officer, Director, 10% owner of Summit Therapeutics Inc. (SMMT); Geygan Jeffrey Richart, Interim CEO, Director, 10% owner of Rocky Mountain Chocolate Factory, Inc. (RMCF) among others. 3 companies showed cluster buying, two or more insiders buying within 7 days: SMMT (3 insiders), TTRX (3 insiders), RMCF (2 insiders). For 4 insiders of 22, this was the first purchase of that company's stock on our record. That is fewer than the 46 purchases filed on Oct 22, 2025. A Form 4 is due within two business days of the trade, so most of these purchases were made earlier in the week. Code P also covers shares bought privately from the company, so one large figure can be a negotiated placement rather than buying on the exchange.