Insider holders · CIK 0001813814
Definium Therapeutics, Inc. · DFTX
Every insider with a reported Table I holding at this company, ranked by their last-reported share count. A balance is only as fresh as its filing — the report date sits next to every row on purpose. ← Back to activity
| Insider | Direct shares | Indirect shares | Total reported | Last report (ET) | From |
|---|---|---|---|---|---|
| Robert BarrowChief Executive Officer | 2,244,640 | — | 2,244,640 | Sep 14, 2026 · 8:30 am EDT | Form 4 |
| Daniel KarlinChief Medical Officer | 803,699 | — | 803,699 | Sep 14, 2026 · 8:30 am EDT | Form 4 |
| Mark SullivanChief Legal Officer | 508,279 | — | 508,279 | Sep 14, 2026 · 8:30 am EDT | Form 4 |
| Brandi RobertsChief Financial Officer | 397,905 | — | 397,905 | Sep 14, 2026 · 8:30 am EDT | Form 4 |
| Matthew T. WileyChief Commercial Officer | 362,133 | — | 362,133 | Sep 14, 2026 · 8:30 am EDT | Form 4 |
| Roger CrystalDirector | 24,289 | — | 24,289 | Jun 15, 2026 · 4:30 pm EDT | Form 4 |
| Suzanne Louise BruhnDirector | 24,289 | — | 24,289 | Jun 15, 2026 · 4:30 pm EDT | Form 4 |
| Carol A ValloneDirector | 22,296 | — | 22,296 | Sep 18, 2026 · 9:55 pm EDT | Form 4 |
| Andreas KrebsDirector | 21,402 | — | 21,402 | Sep 18, 2026 · 9:55 pm EDT | Form 4 |
| David W GryskaDirector | 19,900 | — | 19,900 | Jun 15, 2026 · 4:30 pm EDT | Form 4 |
| Roger AdsettDirector | 3,555 | — | 3,555 | Jun 15, 2026 · 4:30 pm EDT | Form 4 |
Balances come from each insider’s most recent filing that reports a Table I holding; an insider who left the company years ago still appears with their last-known figure and its date. Indirect totals collapse multiple vehicles (trusts, LLCs) into one number — open the filing for the breakdown. Shares as filed, not split-adjusted.