Filings for Jul 6, 2022 show insider purchases at 30 companies, adding up to roughly $17.4 million. The biggest was ETNB (89bio, Inc.), where RA Capital Nexus Fund, L.P. led about $10 million of buying.
C-suite buying: six companies. 108 companies had three or more insiders buying in the past 30 days. One buy doesn't make a thesis, but it's a good place to start digging.