DFTX
Definium Therapeutics, Inc.$22.60-1.44 (-5.96%)Prev Close$24.06·MCap$2.45B·P/E—·Vol1.80M·Yield—
▲
Buys (12M)
0
$0.00
▼
Sells (12M)
9
$1.31M
◆
Net Activity
Net Seller
$1.31M
●
Active Insiders
3
last 12 mo
Over the past 12 months, insider activity at Definium Therapeutics, Inc. (DFTX) has been exclusively selling, with 0 insider purchases totaling $0.00 and 9 insider sales totaling $1.31M. The most recent insider transaction was by Barrow Robert (Chief Executive Officer), who sold $339.1K worth of shares on Dec 26, 2025. Definium Therapeutics, Inc. operates in the Healthcare sector, within the Biotechnology industry, with a market cap of $2.45B.
DFTX Insider Trading Activity
| Date | Insider | Role | Type | Shares | Avg Price | Value | Shares After |
|---|---|---|---|---|---|---|---|
| Dec 26, 2025 | Barrow Robert | Chief Executive Officer | Sell | 25,791 | $13.15 | $339.1K | 0 |
| Dec 26, 2025 | Karlin Daniel | Chief Medical Officer | Sell | 5,600 | $13.15 | $73.6K | 0 |
| Dec 26, 2025 | Sullivan Mark | Chief Legal Officer | Sell | 11,276 | $13.15 | $148.2K | 0 |
| Sep 25, 2025 | Barrow Robert | Chief Executive Officer | Sell | 25,797 | $9.77 | $252.0K | 0 |
| Sep 25, 2025 | Karlin Daniel | Chief Medical Officer | Sell | 7,704 | $9.77 | $75.3K | 0 |
| Sep 25, 2025 | Sullivan Mark | Chief Legal Officer | Sell | 11,278 | $9.77 | $110.2K | 0 |
| Jun 25, 2025 | Barrow Robert | Chief Executive Officer | Sell | 26,491 | $6.80 | $180.1K | 0 |
| Jun 25, 2025 | Karlin Daniel | Chief Medical Officer | Sell | 7,848 | $6.80 | $53.4K | 0 |
| Jun 25, 2025 | Sullivan Mark | Chief Legal Officer | Sell | 11,491 | $6.80 | $78.1K | 0 |
| Mar 25, 2025 | Barrow Robert | Chief Executive Officer | Sell | 21,208 | $6.74 | $142.9K | 0 |
| Mar 25, 2025 | Karlin Daniel | Chief Medical Officer | Sell | 6,836 | $6.74 | $46.1K | 0 |
| Mar 25, 2025 | Liao Carrie | Chief Accounting Officer | Sell | 2,347 | $6.74 | $15.8K | 0 |
| Mar 25, 2025 | Sullivan Mark | Chief Legal Officer | Sell | 6,576 | $6.74 | $44.3K | 0 |
| Dec 26, 2024 | Barrow Robert | Chief Executive Officer | Sell | 19,106 | $7.43 | $142.0K | 0 |
| Dec 26, 2024 | Karlin Dan | Chief Medical Officer | Sell | 6,643 | $7.43 | $49.4K | 0 |
| Dec 26, 2024 | Liao Carrie | Chief Accounting Officer | Sell | 2,273 | $7.43 | $16.9K | 0 |
| Dec 26, 2024 | Sullivan Mark | Chief Legal Officer | Sell | 4,519 | $7.43 | $33.6K | 0 |
| Dec 5, 2024 | GRYSKA DAVID W | Director | Buy | 2,500 | $7.17 | $17.9K | 0 |
| Sep 25, 2024 | Barrow Robert | Chief Executive Officer | Sell | 19,771 | $5.98 | $118.2K | 0 |
| Sep 25, 2024 | Karlin Dan | Chief Medical Officer | Sell | 6,871 | $5.98 | $41.1K | 0 |
| Sep 25, 2024 | Liao Carrie | Chief Accounting Officer | Sell | 2,352 | $5.98 | $14.1K | 0 |
| Sep 25, 2024 | Sullivan Mark | Chief Legal Officer | Sell | 4,430 | $5.98 | $26.5K | 0 |
| Aug 23, 2024 | GRYSKA DAVID W | Director | Buy | 3,500 | $5.98 | $20.9K | 0 |
| Aug 21, 2024 | Halperin Wernli Miri | Executive President | Sell | 32,595 | $6.17 | $201.1K | 0 |
| Aug 19, 2024 | Barrow Robert | Chief Executive Officer | Buy | 1,000 | $6.22 | $6.2K | 0 |
| Jun 25, 2024 | Barrow Robert | Chief Executive Officer | Sell | 15,659 | $7.22 | $113.1K | 0 |
| Jun 25, 2024 | Karlin Dan | Chief Medical Officer | Sell | 6,925 | $7.22 | $50.0K | 0 |
| Jun 25, 2024 | Sullivan Mark | Chief Legal Officer | Sell | 17,854 | $7.22 | $128.9K | 0 |
| Mar 25, 2024 | Barrow Robert | Chief Executive Officer | Sell | 16,519 | $9.50 | $156.9K | 0 |
| Mar 25, 2024 | Greenway Schond L. | Chief Financial Officer | Sell | 5,560 | $9.78 | $54.4K | 0 |
| Mar 25, 2024 | Karlin Dan | Chief Medical Officer | Sell | 6,578 | $9.50 | $62.5K | 0 |
| Dec 26, 2023 | Barrow Robert | Chief Executive Officer | Sell | 13,237 | $3.63 | $48.1K | 0 |
| Dec 26, 2023 | Greenway Schond L. | Chief Financial Officer | Sell | 5,652 | $3.63 | $20.5K | 0 |
| Dec 26, 2023 | Karlin Dan | Chief Medical Officer | Sell | 6,774 | $3.63 | $24.6K | 0 |
| Sep 25, 2023 | Barrow Robert | Chief Executive Officer | Sell | 13,499 | $3.58 | $48.3K | 0 |
| Sep 25, 2023 | Greenway Schond L. | Chief Financial Officer | Sell | 5,762 | $3.58 | $20.6K | 0 |
| Sep 25, 2023 | Karlin Dan | Chief Medical Officer | Sell | 6,918 | $3.57 | $24.7K | 0 |
| Aug 25, 2023 | Greenway Schond L. | Chief Financial Officer | Sell | 20,000 | $3.80 | $76.0K | 0 |
| Jun 27, 2023 | Barrow Robert | Chief Executive Officer | Sell | 15,502 | $3.20 | $49.6K | 0 |
| Jun 27, 2023 | Greenway Schond L. | Chief Financial Officer | Sell | 11,635 | $3.20 | $37.2K | 0 |
| Jun 27, 2023 | Karlin Dan | Chief Medical Officer | Sell | 6,783 | $3.20 | $21.7K | 0 |
| Mar 1, 2023 | Barrow Robert | Chief Executive Officer | Sell | 8,273 | $3.51 | $29.0K | 0 |
| Mar 1, 2023 | Karlin Dan | Chief Medical Officer | Sell | 3,577 | $3.51 | $12.6K | 0 |
| Dec 21, 2022 | Barrow Robert | Chief Executive Officer | Sell | 3,861 | $2.69 | $10.4K | 0 |
| Dec 21, 2022 | Karlin Dan | Chief Medical Officer | Sell | 1,211 | $2.69 | $3.3K | 0 |
| Oct 25, 2022 | Barrow Robert | Chief Executive Officer | Sell | 1,207 | $2.81 | $3.4K | 0 |
| Oct 25, 2022 | Karlin Dan | Chief Medical Officer | Sell | 1,185 | $2.91 | $3.5K | 0 |
| Oct 18, 2022 | Barrow Robert | Chief Executive Officer | Sell | 1,220 | $3.11 | $3.8K | 0 |
| Sep 26, 2022 | Barrow Robert | Chief Executive Officer | Sell | 1,264 | $5.51 | $7.0K | 0 |
| Sep 26, 2022 | Karlin Dan | Chief Medical Officer | Sell | 1,205 | $5.70 | $6.9K | 0 |
Showing 1–50 of 71
1 / 2
DFTX Insider Buying Activity
The following table shows recent insider purchases of Definium Therapeutics, Inc. (DFTX) stock reported via SEC Form 4 filings.
| Date | Insider | Role | Type | Shares | Avg Price | Value | Shares After |
|---|---|---|---|---|---|---|---|
| Dec 5, 2024 | GRYSKA DAVID W | Director | Buy | 2,500 | $7.17 | $17.9K | 0 |
| Aug 23, 2024 | GRYSKA DAVID W | Director | Buy | 3,500 | $5.98 | $20.9K | 0 |
| Aug 19, 2024 | Barrow Robert | Chief Executive Officer | Buy | 1,000 | $6.22 | $6.2K | 0 |
DFTX Insider Selling Activity
The following table shows recent insider sales of Definium Therapeutics, Inc. (DFTX) stock reported via SEC Form 4 filings.
| Date | Insider | Role | Type | Shares | Avg Price | Value | Shares After |
|---|---|---|---|---|---|---|---|
| Dec 26, 2025 | Barrow Robert | Chief Executive Officer | Sell | 25,791 | $13.15 | $339.1K | 0 |
| Dec 26, 2025 | Karlin Daniel | Chief Medical Officer | Sell | 5,600 | $13.15 | $73.6K | 0 |
| Dec 26, 2025 | Sullivan Mark | Chief Legal Officer | Sell | 11,276 | $13.15 | $148.2K | 0 |
| Sep 25, 2025 | Barrow Robert | Chief Executive Officer | Sell | 25,797 | $9.77 | $252.0K | 0 |
| Sep 25, 2025 | Karlin Daniel | Chief Medical Officer | Sell | 7,704 | $9.77 | $75.3K | 0 |
| Sep 25, 2025 | Sullivan Mark | Chief Legal Officer | Sell | 11,278 | $9.77 | $110.2K | 0 |
| Jun 25, 2025 | Barrow Robert | Chief Executive Officer | Sell | 26,491 | $6.80 | $180.1K | 0 |
| Jun 25, 2025 | Karlin Daniel | Chief Medical Officer | Sell | 7,848 | $6.80 | $53.4K | 0 |
| Jun 25, 2025 | Sullivan Mark | Chief Legal Officer | Sell | 11,491 | $6.80 | $78.1K | 0 |
| Mar 25, 2025 | Barrow Robert | Chief Executive Officer | Sell | 21,208 | $6.74 | $142.9K | 0 |
| Mar 25, 2025 | Karlin Daniel | Chief Medical Officer | Sell | 6,836 | $6.74 | $46.1K | 0 |
| Mar 25, 2025 | Liao Carrie | Chief Accounting Officer | Sell | 2,347 | $6.74 | $15.8K | 0 |
| Mar 25, 2025 | Sullivan Mark | Chief Legal Officer | Sell | 6,576 | $6.74 | $44.3K | 0 |
| Dec 26, 2024 | Barrow Robert | Chief Executive Officer | Sell | 19,106 | $7.43 | $142.0K | 0 |
| Dec 26, 2024 | Karlin Dan | Chief Medical Officer | Sell | 6,643 | $7.43 | $49.4K | 0 |
| Dec 26, 2024 | Liao Carrie | Chief Accounting Officer | Sell | 2,273 | $7.43 | $16.9K | 0 |
| Dec 26, 2024 | Sullivan Mark | Chief Legal Officer | Sell | 4,519 | $7.43 | $33.6K | 0 |
| Sep 25, 2024 | Barrow Robert | Chief Executive Officer | Sell | 19,771 | $5.98 | $118.2K | 0 |
| Sep 25, 2024 | Karlin Dan | Chief Medical Officer | Sell | 6,871 | $5.98 | $41.1K | 0 |
| Sep 25, 2024 | Liao Carrie | Chief Accounting Officer | Sell | 2,352 | $5.98 | $14.1K | 0 |
| Sep 25, 2024 | Sullivan Mark | Chief Legal Officer | Sell | 4,430 | $5.98 | $26.5K | 0 |
| Aug 21, 2024 | Halperin Wernli Miri | Executive President | Sell | 32,595 | $6.17 | $201.1K | 0 |
| Jun 25, 2024 | Barrow Robert | Chief Executive Officer | Sell | 15,659 | $7.22 | $113.1K | 0 |
| Jun 25, 2024 | Karlin Dan | Chief Medical Officer | Sell | 6,925 | $7.22 | $50.0K | 0 |
| Jun 25, 2024 | Sullivan Mark | Chief Legal Officer | Sell | 17,854 | $7.22 | $128.9K | 0 |
| Mar 25, 2024 | Barrow Robert | Chief Executive Officer | Sell | 16,519 | $9.50 | $156.9K | 0 |
| Mar 25, 2024 | Greenway Schond L. | Chief Financial Officer | Sell | 5,560 | $9.78 | $54.4K | 0 |
| Mar 25, 2024 | Karlin Dan | Chief Medical Officer | Sell | 6,578 | $9.50 | $62.5K | 0 |
| Dec 26, 2023 | Barrow Robert | Chief Executive Officer | Sell | 13,237 | $3.63 | $48.1K | 0 |
| Dec 26, 2023 | Greenway Schond L. | Chief Financial Officer | Sell | 5,652 | $3.63 | $20.5K | 0 |
| Dec 26, 2023 | Karlin Dan | Chief Medical Officer | Sell | 6,774 | $3.63 | $24.6K | 0 |
| Sep 25, 2023 | Barrow Robert | Chief Executive Officer | Sell | 13,499 | $3.58 | $48.3K | 0 |
| Sep 25, 2023 | Greenway Schond L. | Chief Financial Officer | Sell | 5,762 | $3.58 | $20.6K | 0 |
| Sep 25, 2023 | Karlin Dan | Chief Medical Officer | Sell | 6,918 | $3.57 | $24.7K | 0 |
| Aug 25, 2023 | Greenway Schond L. | Chief Financial Officer | Sell | 20,000 | $3.80 | $76.0K | 0 |
| Jun 27, 2023 | Barrow Robert | Chief Executive Officer | Sell | 15,502 | $3.20 | $49.6K | 0 |
| Jun 27, 2023 | Greenway Schond L. | Chief Financial Officer | Sell | 11,635 | $3.20 | $37.2K | 0 |
| Jun 27, 2023 | Karlin Dan | Chief Medical Officer | Sell | 6,783 | $3.20 | $21.7K | 0 |
| Mar 1, 2023 | Barrow Robert | Chief Executive Officer | Sell | 8,273 | $3.51 | $29.0K | 0 |
| Mar 1, 2023 | Karlin Dan | Chief Medical Officer | Sell | 3,577 | $3.51 | $12.6K | 0 |
| Dec 21, 2022 | Barrow Robert | Chief Executive Officer | Sell | 3,861 | $2.69 | $10.4K | 0 |
| Dec 21, 2022 | Karlin Dan | Chief Medical Officer | Sell | 1,211 | $2.69 | $3.3K | 0 |
| Oct 25, 2022 | Barrow Robert | Chief Executive Officer | Sell | 1,207 | $2.81 | $3.4K | 0 |
| Oct 25, 2022 | Karlin Dan | Chief Medical Officer | Sell | 1,185 | $2.91 | $3.5K | 0 |
| Oct 18, 2022 | Barrow Robert | Chief Executive Officer | Sell | 1,220 | $3.11 | $3.8K | 0 |
| Sep 26, 2022 | Barrow Robert | Chief Executive Officer | Sell | 1,264 | $5.51 | $7.0K | 0 |
| Sep 26, 2022 | Karlin Dan | Chief Medical Officer | Sell | 1,205 | $5.70 | $6.9K | 0 |
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