Insider buyers were busy on Dec 1, 2021: 40 companies, $59.8 million in open-market purchases all told. At the top: OTLK, $20 million bought, with Sukhtian Ghiath M. as the largest buyer.
C-suite buying: nine companies. Cluster buying (3+ insiders) is running at 126 companies this month. Each filing is linked below if you want to check the details yourself.