David R. Epstein

David R. Epstein is a declared insider at 7 companies; the most frequent names are Tempus AI, Inc., Axcella Health Inc. and Evelo Biosciences, Inc. The record holds 50 filings, for trades running from 18 May 2021 to 8 October 2026.

On the open market, the record shows 6 purchases worth €202k and 15 sales worth €2.4M. The totals do not cover 1 filing with an undisclosed amount. Buying on the open market means paying the going price with one's own funds, a different act from receiving shares as pay. The rest of the record consists of 6 share grants and 22 option exercises. So far in 2026, the count stands at 3 purchases and 4 sales.

Half of the purchases are above €40k and half below. Clusters matter here: 4 out of 5 purchases overlapped with buying by a colleague within 30 days. When several insiders buy within a few weeks of each other, analysts speak of a cluster purchase.

The record was last updated on 9 October 2026 with an open-market purchase (€40k) in AgomAb Therapeutics NV. Filings reach the SEC (Form 4) feed a median of 2 days after the trade. For comparison, the SEC allows two business days to file a Form 4. Selling is not necessarily a view on the stock: liquidity needs and diversification are common motives. These figures are compiled from regulatory filings published by SEC (Form 4). They describe what insiders did and are not a recommendation.