Insider buyers were busy on Dec 14, 2022: 40 companies, $40 million in open-market purchases all told. The biggest was DYN (Dyne Therapeutics, Inc.), where Rhodes Jason P led about $20 million of buying.
CEOs and CFOs show up 11 times in today's list. Cluster buying (3+ insiders) is running at 110 companies this month. One buy doesn't make a thesis, but it's a good place to start digging.