Column Group III GP, LP

Filings by Column Group III GP, LP span 2 companies, the busiest being Tenaya Therapeutics, Inc. and Surrozen, Inc./DE. Between 3 August 2021 and 24 February 2026, the trades on record add up to 19 filings.

On the open market, the record shows 15 purchases worth €69.0M and 3 sales worth €401k. On balance, insiders were net buyers of €68.6M. A purchase on the market is a deliberate choice to commit personal money, which is why it draws more attention than a grant. In 2026 alone, the filings show 3 purchases and 3 sales.

The median purchase comes to €1.3M. 12 out of 14 purchases came within 30 days of a purchase by at least one other insider of the same company. Purchases made close together by different insiders form what is called a cluster. Ninety days after publication, 3 purchases show a median change of +62.2%, with the price up in 100% of them. This is a record of the past, not a forecast.

On 26 February 2026 came the latest disclosure, an open-market sale for €161k in Tenaya Therapeutics, Inc. The most recent open-market purchase was published on 20 January 2026, 271 days ago. Between a trade and the moment it shows up on SEC (Form 4), the median delay is 2 days. The legal deadline for a Form 4 is two business days after the transaction. Source: insider filings from SEC (Form 4). Past trades are no guide to future returns.