Insider buying on Jun 12, 2026

On Jun 12, 2026, 55 insiders at 48 companies filed 71 purchases reported on Form 4, worth $111.4M in all, with a median purchase of $39.2K. The largest was Zanganeh Mahkam, Co-Chief Executive Officer, Director, 10% owner of Summit Therapeutics Inc. (SMMT), who reported buying 3,810,000 shares worth $50.0M. Officers accounted for 40 purchases, directors who are not officers for 21, and 10% owners with no board or officer role for 9. Chief executives and chief financial officers filed 31 purchases: Zanganeh Mahkam, Co-Chief Executive Officer, Director, 10% owner of Summit Therapeutics Inc. (SMMT); Duggan Robert W, Co-Chief Executive Officer, Director, 10% owner of Summit Therapeutics Inc. (SMMT); AmperSPAC LLC, Co-CEO, Director, 10% owner of AmperCap Acquisition Co (APMC) among others. 13 companies showed cluster buying, two or more insiders buying within 7 days, among them BGDE (5 insiders), STRR (5 insiders), PICS (3 insiders), INR (3 insiders). For 22 insiders of 55, this was the first purchase of that company's stock on our record. That is fewer than the 107 purchases filed on Jun 11, 2026. 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.