Filings for Dec 12, 2025 show insider purchases at 40 companies, adding up to roughly $371.9 million. The biggest was IMVT (Immunovant, Inc.), where Roivant Sciences Ltd. led about $350 million of buying.
95 companies had three or more insiders buying in the past 30 days. 15 of the buys came from a CEO or CFO. One buy doesn't make a thesis, but it's a good place to start digging.