In the last 12 months, insiders at Definium Therapeutics, Inc. ($DFTX) filed 103 transactions with the SEC: 4 open-market purchases totaling $45,070 and 47 sales totaling $3,722,143. Net insider sentiment: net selling.
Definium Therapeutics, Inc. operates in the Medicinal chemicals & botanical products industry (Life sciences sector).
Most Active Insiders
- Barrow Robert (Chief Executive Officer) — 21 transactions totaling $2,076,803
- Sullivan Mark (Chief Legal Officer) — 12 transactions totaling $767,531
- Karlin Daniel (Chief Medical Officer) — 7 transactions totaling $396,424
- Halperin Wernli Miri (Executive President) — 3 transactions totaling $386,111
- Karlin Dan (Chief Medical Officer) — 12 transactions totaling $286,507
View all SEC Filings for Definium Therapeutics, Inc. (DFTX).
Set Up your own filters →Recent Insider Transactions
| Transaction Date | Insider Name | Title | Transaction Type | Security | Shares | Price | Shares Owned Following | Total Shares Outstanding | % of Owned | % of Outstanding |
|---|---|---|---|---|---|---|---|---|---|---|
| March 25, 2026 | Karlin Daniel | Chief Medical Officer | S | Common Shares | 8018 | $18.47 | 413,317.0000 | 98,509,279 | 1.90% | 0.01% |
| March 25, 2026 | Barrow Robert | Chief Executive Officer | S | Common Shares | 24431 | $18.47 | 752,454.0000 | 98,509,279 | 3.14% | 0.02% |
| March 25, 2026 | Sullivan Mark | Chief Legal Officer | S | Common Shares | 10702 | $18.47 | 271,079.0000 | 98,509,279 | 3.80% | 0.01% |
| Feb. 3, 2026 | Sullivan Mark | Chief Legal Officer | A | Common Shares | 125000 | $0.00 | 407,576.0000 | 98,509,279 | 44.24% | 0.13% |
| Feb. 3, 2026 | Roberts Brandi | Chief Financial Officer | A | Common Shares | 150000 | $0.00 | 150,000.0000 | 98,509,279 | 9999.99% | 0.15% |
| Feb. 3, 2026 | Wiley Matthew T. | Chief Commercial Officer | A | Common Shares | 115000 | $0.00 | 115,000.0000 | 98,509,279 | 9999.99% | 0.12% |
| Feb. 3, 2026 | Barrow Robert | Chief Executive Officer | A | Common Shares | 320000 | $0.00 | 1,098,477.0000 | 98,509,279 | 41.11% | 0.32% |
| Feb. 3, 2026 | Karlin Daniel | Chief Medical Officer | A | Common Shares | 150000 | $0.00 | 575,025.0000 | 98,509,279 | 35.29% | 0.15% |
| Jan. 29, 2026 | Adsett Roger | Not found | A | Stock Option (Right to Buy) | 50000 | $0.00 | 50,000.0000 | 98,509,279 | 9999.99% | 0.05% |
| Dec. 26, 2025 | Barrow Robert | Chief Executive Officer | S | Common Shares | 25791 | $13.15 | 778,477.0000 | 98,509,279 | 3.21% | 0.03% |
| Dec. 26, 2025 | Sullivan Mark | Chief Legal Officer | S | Common Shares | 11276 | $13.15 | 282,576.0000 | 98,509,279 | 3.84% | 0.01% |
| Dec. 26, 2025 | Karlin Daniel | Chief Medical Officer | S | Common Shares | 5600 | $13.15 | 425,025.0000 | 98,509,279 | 1.30% | 0.01% |
| Sept. 25, 2025 | Sullivan Mark | Chief Legal Officer | S | Common Shares | 11278 | $9.77 | 293,852.0000 | 75,368,359 | 3.70% | 0.01% |
| Sept. 25, 2025 | Barrow Robert | Chief Executive Officer | S | Common Shares | 25797 | $9.77 | 804,268.0000 | 75,368,359 | 3.11% | 0.03% |
| Sept. 25, 2025 | Karlin Daniel | Chief Medical Officer | S | Common Shares | 7704 | $9.77 | 430,625.0000 | 75,368,359 | 1.76% | 0.01% |
| June 25, 2025 | Barrow Robert | Chief Executive Officer | S | Common Shares | 26491 | $6.80 | 830,065.0000 | 75,368,359 | 3.09% | 0.04% |
| June 25, 2025 | Karlin Daniel | Chief Medical Officer | S | Common Shares | 7848 | $6.80 | 438,329.0000 | 75,368,359 | 1.76% | 0.01% |
| June 25, 2025 | Sullivan Mark | Chief Legal Officer | S | Common Shares | 11491 | $6.80 | 305,130.0000 | 75,368,359 | 3.63% | 0.02% |
| June 12, 2025 | CRYSTAL ROGER | Not found | A | Stock Option (Right to Buy) | 75187 | $0.00 | 75,187.0000 | 75,368,359 | 9999.99% | 0.10% |
| June 12, 2025 | Bruhn Suzanne Louise | Not found | A | Stock Option (Right to Buy) | 75187 | $0.00 | 75,187.0000 | 75,368,359 | 9999.99% | 0.10% |
| June 12, 2025 | GRYSKA DAVID W | Not found | A | Stock Option (Right to Buy) | 75187 | $0.00 | 75,187.0000 | 75,368,359 | 9999.99% | 0.10% |
| June 12, 2025 | Krebs Andreas | Not found | A | Stock Option (Right to Buy) | 75187 | $0.00 | 75,187.0000 | 75,368,359 | 9999.99% | 0.10% |
| June 12, 2025 | Vallone Carol A | Not found | A | Stock Option (Right to Buy) | 75187 | $0.00 | 75,187.0000 | 75,368,359 | 9999.99% | 0.10% |
| June 2, 2025 | Roberts Brandi | Chief Financial Officer | A | Stock Option (Right to Buy) | 500000 | $0.00 | 500,000.0000 | 75,368,359 | 9999.99% | 0.66% |
| March 25, 2025 | Karlin Daniel | Chief Medical Officer | S | Common Shares | 6836 | $6.74 | 446,177.0000 | 75,368,359 | 1.51% | 0.01% |
| March 25, 2025 | Barrow Robert | Chief Executive Officer | S | Common Shares | 21208 | $6.74 | 856,556.0000 | 75,368,359 | 2.42% | 0.03% |
| March 25, 2025 | Sullivan Mark | Chief Legal Officer | S | Common Shares | 6576 | $6.74 | 316,621.0000 | 75,368,359 | 2.03% | 0.01% |
| March 25, 2025 | Liao Carrie | Chief Accounting Officer | S | Common Shares | 2347 | $6.74 | 144,923.0000 | 75,368,359 | 1.59% | 0.00% |
| March 17, 2025 | Wiley Matthew T. | Chief Commercial Officer | A | Stock Option (Right to Buy) | 350000 | $0.00 | 350,000.0000 | 75,368,359 | 9999.99% | 0.46% |
| March 12, 2025 | Barrow Robert | Chief Executive Officer | A | Common Shares | 350000 | $0.00 | 877,764.0000 | 75,368,359 | 66.32% | 0.46% |
| March 12, 2025 | Karlin Daniel | Chief Medical Officer | A | Common Shares | 115000 | $0.00 | 453,013.0000 | 75,368,359 | 34.02% | 0.15% |
| March 12, 2025 | Sullivan Mark | Chief Legal Officer | A | Common Shares | 150000 | $0.00 | 323,197.0000 | 75,368,359 | 86.61% | 0.20% |
| March 12, 2025 | Liao Carrie | Chief Accounting Officer | A | Common Shares | 50000 | $0.00 | 142,270.0000 | 75,368,359 | 54.19% | 0.07% |
| Dec. 26, 2024 | Karlin Dan | Chief Medical Officer | S | Common Shares | 6643 | $7.43 | 338,013.0000 | 0 | 1.93% | 0.00% |
| Dec. 26, 2024 | Sullivan Mark | Chief Legal Officer | S | Common Shares | 4519 | $7.43 | 173,197.0000 | 0 | 2.54% | 0.00% |
| Dec. 26, 2024 | Barrow Robert | Chief Executive Officer | S | Common Shares | 19106 | $7.43 | 526,666.0000 | 0 | 3.50% | 0.00% |
| Dec. 26, 2024 | Liao Carrie | Chief Accounting Officer | S | Common Shares | 2273 | $7.43 | 97,270.0000 | 0 | 2.28% | 0.00% |
| Dec. 5, 2024 | GRYSKA DAVID W | Not found | P | Common Shares | 2500 | $7.17 | 19,851.0000 | 0 | 14.41% | 0.00% |
| Sept. 25, 2024 | Liao Carrie | Chief Accounting Officer | S | Common Shares | 2352 | $5.98 | 99,543.0000 | 0 | 2.31% | 0.00% |
| Sept. 25, 2024 | Barrow Robert | Chief Executive Officer | S | Common Shares | 19771 | $5.98 | 545,772.0000 | 0 | 3.50% | 0.00% |
| Sept. 25, 2024 | Karlin Dan | Chief Medical Officer | S | Common Shares | 6871 | $5.98 | 344,656.0000 | 0 | 1.95% | 0.00% |
| Sept. 25, 2024 | Sullivan Mark | Chief Legal Officer | S | Common Shares | 4430 | $5.98 | 177,716.0000 | 0 | 2.43% | 0.00% |
| Aug. 23, 2024 | GRYSKA DAVID W | Not found | P | Common Shares | 3500 | $5.98 | 17,351.0000 | 0 | 25.27% | 0.00% |
| Aug. 21, 2024 | Halperin Wernli Miri | Executive President | F | Common Shares | 32595 | $6.17 | 202,405.0000 | 0 | 13.87% | 0.00% |
| Aug. 21, 2024 | Halperin Wernli Miri | Executive President | M | Stock Option (Right to Buy) | 50000 | $0.00 | 0.0000 | 0 | 100.00% | 0.00% |
| Aug. 21, 2024 | Halperin Wernli Miri | Executive President | M | Common Shares | 50000 | $3.70 | 235,000.0000 | 0 | 27.03% | 0.00% |
| Aug. 19, 2024 | Barrow Robert | Chief Executive Officer | P | Common Shares | 500 | $6.31 | 565,043.0000 | 0 | 0.09% | 0.00% |
| Aug. 20, 2024 | Barrow Robert | Chief Executive Officer | P | Common Shares | 500 | $6.12 | 565,543.0000 | 0 | 0.09% | 0.00% |
| June 25, 2024 | Barrow Robert | Chief Executive Officer | S | Common Shares | 15659 | $7.22 | 564,543.0000 | 0 | 2.70% | 0.00% |
| June 25, 2024 | Karlin Dan | Chief Medical Officer | S | Common Shares | 6925 | $7.22 | 351,527.0000 | 0 | 1.93% | 0.00% |
| June 25, 2024 | Sullivan Mark | Chief Legal Officer | S | Common Shares | 17854 | $7.22 | 182,146.0000 | 0 | 8.93% | 0.00% |
| June 10, 2024 | Bruhn Suzanne Louise | Not found | A | Stock Option (Right to Buy) | 16506 | $0.00 | 16,506.0000 | 0 | 9999.99% | 0.00% |
| June 10, 2024 | Vallone Carol A | Not found | A | Stock Option (Right to Buy) | 16506 | $0.00 | 16,506.0000 | 0 | 9999.99% | 0.00% |
| June 10, 2024 | GRYSKA DAVID W | Not found | A | Stock Option (Right to Buy) | 16506 | $0.00 | 16,506.0000 | 0 | 9999.99% | 0.00% |
| June 10, 2024 | CRYSTAL ROGER | Not found | A | Stock Option (Right to Buy) | 16506 | $0.00 | 16,506.0000 | 0 | 9999.99% | 0.00% |
| June 10, 2024 | Krebs Andreas | Not found | A | Stock Option (Right to Buy) | 16506 | $0.00 | 16,506.0000 | 0 | 9999.99% | 0.00% |
| March 25, 2024 | Barrow Robert | Chief Executive Officer | S | Common Shares | 16519 | $9.50 | 580,202.0000 | 0 | 2.77% | 0.00% |
| March 25, 2024 | Karlin Dan | Chief Medical Officer | S | Common Shares | 6578 | $9.50 | 358,452.0000 | 0 | 1.80% | 0.00% |
| March 25, 2024 | Greenway Schond L. | Chief Financial Officer | F | Common Shares | 5560 | $9.78 | 211,057.0000 | 0 | 2.57% | 0.00% |
| Feb. 27, 2024 | Sullivan Mark | Chief Legal Officer | A | Stock Option (Right to Buy) | 125000 | $0.00 | 125,000.0000 | 0 | 9999.99% | 0.00% |
| Feb. 27, 2024 | Liao Carrie | Chief Accounting Officer | A | Stock Option (Right to Buy) | 100000 | $0.00 | 100,000.0000 | 0 | 9999.99% | 0.00% |
| Feb. 27, 2024 | Barrow Robert | Chief Executive Officer | A | Stock Option (Right to Buy) | 400000 | $0.00 | 400,000.0000 | 0 | 9999.99% | 0.00% |
| Feb. 27, 2024 | Wernli Miri Halperin | Executive President | A | Stock Option (Right to Buy) | 125000 | $0.00 | 125,000.0000 | 0 | 9999.99% | 0.00% |
| Feb. 27, 2024 | Greenway Schond L. | Chief Financial Officer | A | Stock Option (Right to Buy) | 150000 | $0.00 | 150,000.0000 | 0 | 9999.99% | 0.00% |
| Feb. 27, 2024 | Karlin Dan | Chief Medical Officer | A | Stock Option (Right to Buy) | 150000 | $0.00 | 150,000.0000 | 0 | 9999.99% | 0.00% |
| Dec. 26, 2023 | Greenway Schond L. | Chief Financial Officer | S | Common Shares | 5652 | $3.63 | 216,617.0000 | 0 | 2.54% | 0.00% |
| Dec. 26, 2023 | Barrow Robert | Chief Executive Officer | S | Common Shares | 13237 | $3.63 | 596,721.0000 | 0 | 2.17% | 0.00% |
| Dec. 26, 2023 | Karlin Dan | Chief Medical Officer | S | Common Shares | 6774 | $3.63 | 365,030.0000 | 0 | 1.82% | 0.00% |
| Sept. 25, 2023 | Barrow Robert | Chief Executive Officer | S | Common Shares | 5268 | $3.57 | 619,960.0000 | 0 | 0.84% | 0.00% |
| Sept. 25, 2023 | Barrow Robert | Chief Executive Officer | S | Common Shares | 8231 | $3.58 | 611,729.0000 | 0 | 1.33% | 0.00% |
| Sept. 25, 2023 | Karlin Dan | Chief Medical Officer | S | Common Shares | 3678 | $3.57 | 375,044.0000 | 0 | 0.97% | 0.00% |
| Sept. 25, 2023 | Karlin Dan | Chief Medical Officer | S | Common Shares | 3240 | $3.58 | 371,804.0000 | 0 | 0.86% | 0.00% |
| Sept. 25, 2023 | Greenway Schond L. | Chief Financial Officer | S | Common Shares | 1908 | $3.57 | 226,123.0000 | 0 | 0.84% | 0.00% |
| Sept. 25, 2023 | Greenway Schond L. | Chief Financial Officer | S | Common Shares | 3854 | $3.58 | 222,269.0000 | 0 | 1.70% | 0.00% |
| Aug. 25, 2023 | Greenway Schond L. | Chief Financial Officer | S | Common Shares | 20000 | $3.80 | 228,031.0000 | 0 | 8.06% | 0.00% |
| June 27, 2023 | Barrow Robert | Chief Executive Officer | S | Common Shares | 8416 | $3.21 | 623,457.0000 | 0 | 1.33% | 0.00% |
| June 27, 2023 | Karlin Dan | Chief Medical Officer | S | Common Shares | 3820 | $3.19 | 381,685.0000 | 0 | 0.99% | 0.00% |
| June 27, 2023 | Barrow Robert | Chief Executive Officer | S | Common Shares | 7086 | $3.19 | 631,873.0000 | 0 | 1.11% | 0.00% |
| June 27, 2023 | Greenway Schond L. | Chief Financial Officer | S | Common Shares | 7694 | $3.19 | 251,972.0000 | 0 | 2.96% | 0.00% |
| June 27, 2023 | Greenway Schond L. | Chief Financial Officer | S | Common Shares | 3941 | $3.21 | 248,031.0000 | 0 | 1.56% | 0.00% |
| June 27, 2023 | Karlin Dan | Chief Medical Officer | S | Common Shares | 2963 | $3.21 | 378,722.0000 | 0 | 0.78% | 0.00% |
| June 21, 2023 | Krebs Andreas | Director | A | Common Shares | 13671 | $0.00 | 15,107.0000 | 0 | 952.02% | 0.00% |
| June 21, 2023 | Krebs Andreas | Director | A | Stock Option (Right to Buy) | 19203 | $0.00 | 29,748.0000 | 0 | 182.11% | 0.00% |
| June 21, 2023 | Vallone Carol A | Director | A | Common Shares | 13671 | $0.00 | 16,544.0000 | 0 | 475.84% | 0.00% |
| June 21, 2023 | Vallone Carol A | Director | A | Stock Option (Right to Buy) | 19203 | $0.00 | 29,205.0000 | 0 | 191.99% | 0.00% |
| June 21, 2023 | Bruhn Suzanne Louise | Director | A | Common Shares | 13671 | $0.00 | 19,623.0000 | 0 | 229.69% | 0.00% |
| June 21, 2023 | Bruhn Suzanne Louise | Director | A | Stock Option (Right to Buy) | 19203 | $0.00 | 27,267.0000 | 0 | 238.13% | 0.00% |
| June 21, 2023 | CRYSTAL ROGER | Director | A | Stock Option (Right to Buy) | 19203 | $0.00 | 27,267.0000 | 0 | 238.13% | 0.00% |
| June 21, 2023 | CRYSTAL ROGER | Director | A | Common Shares | 13671 | $0.00 | 19,623.0000 | 0 | 229.69% | 0.00% |
| June 21, 2023 | GRYSKA DAVID W | Director | A | Director's Deferred Share Units | 13131 | $0.00 | 13,131.0000 | 0 | 9999.99% | 0.00% |
| June 21, 2023 | GRYSKA DAVID W | Director | A | Stock Option (Right to Buy) | 37594 | $0.00 | 37,594.0000 | 0 | 9999.99% | 0.00% |
| June 21, 2023 | GRYSKA DAVID W | Director | A | Common Shares | 13851 | $0.00 | 13,851.0000 | 0 | 9999.99% | 0.00% |
| March 14, 2023 | Liao Carrie | Chief Accounting Officer | A | Common Shares | 75000 | $0.00 | 101,895.0000 | 0 | 278.86% | 0.00% |
| March 14, 2023 | Wernli Miri Halperin | Executive President | A | Common Shares | 100000 | $0.00 | 185,000.0000 | 0 | 117.65% | 0.00% |
| March 14, 2023 | Greenway Schond L. | Chief Financial Officer | A | Common Shares | 175000 | $0.00 | 259,666.0000 | 0 | 206.69% | 0.00% |
| April 13, 2023 | Sullivan Mark | Chief Legal Officer | A | Common Shares | 200000 | $0.00 | 200,000.0000 | 0 | 9999.99% | 0.00% |
| March 14, 2023 | Wernli Miri Halperin | Executive President | A | Common Shares | 100000 | $0.00 | 1,375,000.0000 | 0 | 7.84% | 0.00% |
| March 14, 2023 | Karlin Dan | Chief Medical Officer | A | Common Shares | 125000 | $0.00 | 385,505.0000 | 0 | 47.98% | 0.00% |
| March 14, 2023 | Liao Carrie | VP, Controller&Acct Principal | A | Common Shares | 75000 | $0.00 | 478,430.0000 | 0 | 18.59% | 0.00% |
| March 14, 2023 | Greenway Schond L. | Chief Financial Officer | A | Common Shares | 175000 | $0.00 | 1,445,000.0000 | 0 | 13.78% | 0.00% |
| March 14, 2023 | Barrow Robert | Chief Executive Officer | A | Common Shares | 400000 | $0.00 | 638,959.0000 | 0 | 167.39% | 0.00% |
| March 1, 2023 | Karlin Dan | Chief Medical Officer | S | Common Shares | 3577 | $3.51 | 260,505.0000 | 0 | 1.35% | 0.00% |
| March 1, 2023 | Barrow Robert | Chief Executive Officer | S | Common Shares | 8273 | $3.51 | 238,959.0000 | 0 | 3.35% | 0.00% |