Filings for Nov 25, 2022 show insider purchases at 37 companies, adding up to roughly $26.6 million. The biggest was TNYA (Tenaya Therapeutics, Inc.), where Casdin Capital, LLC led about $6.5 million of buying.
12 of the buys came from a CEO or CFO. 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.