Filings for May 11, 2023 show insider purchases at 40 companies, adding up to roughly $136.6 million. The biggest was COIN (Coinbase Global, Inc.), where Ehrsam Frederick Ernest III led about $50 million of buying.
Cluster buying (3+ insiders) is running at 134 companies this month. C-suite buying: 12 companies. One buy doesn't make a thesis, but it's a good place to start digging.