Cullinan Therapeutics, Inc.
A clinical-stage biopharmaceutical company in Cambridge, Massachusetts that develops experimental therapies for cancer and autoimmune diseases, advancing drug candidates it discovers or licenses through early clinical trials. Founded in 2016 as Cullinan Pharmaceuticals, it rebranded to Cullinan Therapeutics in 2024 to signal its shift beyond oncology into autoimmune conditions. Its name nods to the Cullinan Diamond, the largest gem-quality rough diamond ever found, evoking rarity and brilliance.
Bought 1.87M
Granted 340.0K · Sold 65.0K
Granted 190.9K · Sold 120.0K
Granted 119.1K
Granted 231.5K · Sold 156.7K
Granted 127.5K · Sold 26.0K
Granted 50.0K · Sold 4.2K
Granted 100.0K · Sold 19.8K
Granted 128.8K · Sold 4.4K
| Insider | Stake change | Holds now | Granted / vested | Bought | Sold |
|---|---|---|---|---|---|
| Lynx1 Capital Management LP +1 co-filer10% owner · 8 transactions | — | 8.96M | — | 1.87M | — |
| Ahmed NadimPresident and CEO, Director · 8 transactions | +237.4% | 390.8K | 340.0K | — | 65.0K |
| Savill CorrineChief Business Officer · 11 transactions | +41.7% | 241.0Kas of Feb 2025 | 190.9K | — | 120.0K |
| Ebeling ThomasDirector · 3 transactions | +176.5% | 186.7Kas of Jun 2024 | 119.1K | — | — |
| Michaelson JenniferChief Scientific Officer · 37 transactions | +94.2% | 174.8K | 231.5K | — | 156.7K |
| Jones Jeffrey AlanChief Medical Officer · 9 transactions | +173.7% | 160.0K | 127.5K | — | 26.0K |
| Trigilio JeffreyChief Financial Officer · 4 transactions | +51.9% | 133.9Kas of Feb 2024 | 50.0K | — | 4.2K |
| Sumer Jacquelyn LChief Legal Officer · 9 transactions | +179.5% | 128.1K | 100.0K | — | 19.8K |
| Fenton Mary KayChief Financial Officer · 4 transactions | — | 126.4K | 128.8K | — | 4.4K |
Select a row to see that insider’s individual transactions.
Net open-market activity over the last 3 years: +1.48M shares. Grants, option exercises and tax withholding are excluded — they are compensation mechanics, not decisions to buy or sell.