Insider buyers were busy on Sep 30, 2026: 39 companies, $352.9 million in open-market purchases all told. The biggest was KOD (Kodiak Sciences Inc.), where Baker Bros. Advisors (GP) LLC led about $157 million of buying.
61 companies had three or more insiders buying in the past 30 days. Eight 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.