Definium Therapeutics, Inc.
DFTX- Exchange
- Nasdaq
- Industry
- Medicinal Chemicals & Botanical Products
- SEC CIK
- 0001813814
In the last 90 days, Definium Therapeutics, Inc. insiders filed 0 open-market purchases and 1 sale; 362 institutions reported holding it in 13F filings for Q2 2026, worth $5.35B in total; Duquesne Family Office is the only superinvestor holding it.
Open-market trades, last 90 days
Open-market purchases (P) and sales (S) by Definium Therapeutics, Inc. insiders, counted by Form 4 filing. Trades with a flagged price and duplicate filings are left out.
- Open-market buys
- 0 filings
- Open-market sells
- 1 filing
- 1 insider, $721.7K in total
- Insiders trading
- 1
- Net value
- −$721.7K
- Purchases minus sales
Insider roster
Directors, officers and 10% owners who have filed a Form 4 for Definium Therapeutics, Inc., current and former, most recent filer first. Last reported holding is the position after the last non-derivative trade in their latest filing.
| Name | Title | Last reported holding | Last filing | Filings, past year |
|---|---|---|---|---|
| Vallone Carol A | Director | 22,296 | Sep 18, 2026 | 2 |
| Krebs Andreas | Director | 21,402 | Sep 18, 2026 | 2 |
| Karlin Dan | Chief Medical Officer | 803,699 | Sep 14, 2026 | 7 |
| Wiley Matthew T. | Chief Commercial Officer | 362,133 | Sep 14, 2026 | 5 |
| Sullivan Mark | Chief Legal Officer | 508,279 | Sep 14, 2026 | 7 |
| Roberts Brandi | Chief Financial Officer | 397,905 | Sep 14, 2026 | 5 |
| Barrow Robert | Chief Executive Officer | 2,244,640 | Sep 14, 2026 | 8 |
| Gryska David W | Director | 19,900 | Jun 15, 2026 | 1 |
| Bruhn Suzanne Louise | Director | 24,289 | Jun 15, 2026 | 1 |
| Crystal Roger | Director | 24,289 | Jun 15, 2026 | 1 |
| Adsett Roger | Director | 3,555 | Jun 15, 2026 | 2 |
| Liao Carrie | Chief Accounting Officer | 144,923 | Mar 26, 2025 | 0 |
| Wernli Miri Halperin | Executive President | 202,405 | Aug 22, 2024 | 0 |
| Greenway Schond L. | Chief Financial Officer | 211,057 | Mar 26, 2024 | 0 |
| Makes Brigid | Director | 158,706 | Jun 6, 2022 | 0 |
| Hu Cynthia W. | Chief Legal Officer&Secretary | 1,200,000 | Mar 28, 2022 | 0 |
| Hurst Stephen L | Director, Other: Former Director | – | Mar 25, 2022 | 0 |
Insider trades
Each row adds up one type of transaction in one Form 4 filing. Only open-market purchases (P) and sales (S) are shown by default; use the filters to see grants, option exercises and other codes.
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Dec 22, 2022 (view filing) | Dec 21 | 1 day | Barrow RobertChief Executive Officer | SSale | −3.86K | $2.69 | −$10.4K | −1.5%247.2K after | |
| Dec 22, 2022 (view filing) | Dec 21 | 1 day | Karlin DanChief Medical Officer | SSale | −1.21K | $2.69 | −$3.26K | −0.5%264.1K after | |
| Oct 27, 2022 (view filing) | Oct 25-27 | 2 days | Karlin DanChief Medical Officer | SSale | −1.19K | $2.91 | −$3.45K | −0.4%265.3K after | 2 lots |
| Oct 25, 2022 (view filing) | Oct 25 | Same day | Barrow RobertChief Executive Officer | SSale | −1.21K | $2.81 | −$3.39K | −0.5%251.1K after | |
| Oct 18, 2022 (view filing) | Oct 18 | Same day | Barrow RobertChief Executive Officer | SSale | −1.22K | $3.11 | −$3.79K | −0.5%252.3K after | |
| Sep 27, 2022 (view filing) | Sep 26-27 | 1 day | Karlin DanChief Medical Officer | SSale | −1.21K | $5.70 | −$6.87K | −0.5%266.5K after | 2 lots |
| Sep 27, 2022 (view filing) | Sep 26 | 1 day | Barrow RobertChief Executive Officer | SSale | −1.26K | $5.51 | −$6.96K | −0.5%253.5K after | |
| Sep 19, 2022 (view filing) | Sep 16 | 3 days | Barrow RobertChief Executive Officer | SSale | −1.35K | $7.26 | −$9.80K | −0.5%254.8K after | |
| Sep 1, 2022 (view filing) | Aug 31 | 1 day | Karlin DanChief Medical Officer | SSale | −1.20K | $11.67 | −$14.1K | −0.4%267.7K after | |
| Sep 1, 2022 (view filing) | Aug 31 | 1 day | Barrow RobertChief Executive Officer | SSale | −1.23K | $11.67 | −$14.3K | −0.5%256.1K after | |
| Aug 17, 2022 (view filing) | Aug 16 | 1 day | Barrow RobertChief Executive Officer | SSale | −20.4K | $0.68 | −$13.8K | −0.5%3.86M after | |
| Jul 27, 2022 (view filing) | Jul 25-27 | 2 days | Karlin DanChief Medical Officer | SSale | −18.2K | $0.69 | −$12.6K | −0.4%4.03M after | 2 lots |
| Jul 26, 2022 (view filing) | Jul 25 | 1 day | Barrow RobertChief Executive Officer | SSale | −18.7K | $0.69 | −$12.9K | −0.5%3.88M after | |
| Jul 18, 2022 (view filing) | Jul 18 | Same day | Barrow RobertChief Executive Officer | SSale | −19.4K | $0.70 | −$13.6K | −0.5%3.90M after | |
| Jun 28, 2022 (view filing) | Jun 27 | 1 day | Barrow RobertChief Executive Officer | SSale | −36.8K | $0.70 | −$25.7K | −0.9%3.92M after | |
| Jun 28, 2022 (view filing) | Jun 27 | 1 day | Karlin DanChief Medical Officer | SSale | −26.2K | $0.70 | −$18.4K | −0.6%4.05M after | |
| Jun 21, 2022 (view filing) | Jun 16 | 5 days | Barrow RobertChief Executive Officer | SSale | −21.3K | $0.70 | −$14.9K | −0.5%3.96M after | |
| May 31, 2022 (view filing) | May 27 | 4 days | Karlin DanChief Medical Officer | SSaleSubordinate Voting Shares | −9.55K | $0.82 | −$7.84K | −0.2%4.08M after | |
| May 26, 2022 (view filing) | May 25 | 1 day | Barrow RobertChief Executive Officer | SSaleSubordinate Voting Shares | −18.4K | $0.77 | −$14.2K | −0.5%3.98M after | |
| May 26, 2022 (view filing) | May 25 | 1 day | Karlin DanChief Medical Officer | SSaleSubordinate Voting Shares | −8.24K | $0.77 | −$6.35K | −0.2%4.09M after | |
| May 19, 2022 (view filing) | May 18 | 1 day | Barrow RobertChief Executive Officer | SSaleSubordinate Voting Shares | −18.9K | $0.71 | −$13.5K | −0.5%4.00M after | Amended |