Filings for Jan 27, 2022 show insider purchases at 29 companies, adding up to roughly $51 million. The biggest was SKYH (Sky Harbour Group Corp), where Rozek Alexander Buffett led about $45 million of buying.
C-suite buying: seven companies. 66 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.