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Definium Therapeutics, Inc.

DFTX Net selling
CIK 0001813814 #1221 in the set updated 17 Sep 2026
Bought (120 mo)
$45.07K
out of their own pocket, the only kind of buying there is
Sold (120 mo)
$7.28M
$6.65M on a plan · $0.00 straight out of an exercise
Sold at will
$629.40K
41 of 76 sales
Net
−$7.23M
−$584.33K against sales at will

By person

16 insiders · 81 transactions
130×

Robert Barrow holds 130 times base salary in stock. $85.16M of shares against $655.00K in salary for 2025.

Salary from the company's own proxy. The shares are what Robert Barrow last reported holding, valued at $37.94, the price Common Shares was last bought or sold at on the open market here, on 3 Sep 2026.

Insider
Role
Bought
Sold
Net
Holding
Of company
Worth
Change
Barrow Robert
Chief Executive Officer
$6.22K (2)
$4.25M (29) scheduled
−$4.25M
2,244,640
1.67%
$85.16M
—
Sullivan Mark
Chief Legal Officer
—
$1.35M (9) scheduled
−$1.35M
508,279
0.3783%
$19.28M
—
Karlin Daniel
Chief Medical Officer
—
$1.21M (27) scheduled
−$1.21M
803,699
0.5981%
$30.49M
—
Greenway Schond L.
Chief Financial Officer
—
$154.32K (6)
−$154.32K
211,057
0.1571%
$8.01M
—
Roberts Brandi
Chief Financial Officer
—
$135.68K (1) scheduled
−$135.68K
397,905
0.2961%
$15.10M
+43,245%
Wiley Matthew T.
Chief Commercial Officer
—
$129.10K (1) scheduled
−$129.10K
362,133
0.2695%
$13.74M
—
Liao Carrie
Chief Accounting Officer
—
$46.77K (3) scheduled
−$46.77K
144,923
0.1079%
$5.50M
—
GRYSKA DAVID W
Director
$38.86K (2)
—
+$38.86K
19,900
0.0148%
$755.01K
—
Hu Cynthia W.
Chief Legal Officer&Secretary
—
—
—
1,200,000
0.8931%
$45.53M
—
Halperin Wernli Miri
Executive President
—
—
—
202,405
0.1506%
$7.68M
—
Makes Brigid
Director
—
—
—
158,706
0.1181%
$6.02M
+501.8%
CRYSTAL ROGER
Director
—
—
—
24,289
0.0181%
$921.52K
—
Bruhn Suzanne Louise
Director
—
—
—
24,289
0.0181%
$921.52K
—
Vallone Carol A
Director
—
—
—
21,210
0.0158%
$804.71K
—
Krebs Andreas
Director
—
—
—
19,773
0.0147%
$750.19K
—
Adsett Roger
Director
—
—
—
3,555
0.0026%
$134.88K
—

Individual transactions

35
Insider
Date
Role
Action
Shares
Price
Amount
Barrow Robert
3 Sep 2026
Chief Executive Officer
Sold on a plan
19,023
$37.94
$721.73K
Wiley Matthew T.
25 Jun 2026
Chief Commercial Officer
Sold on a plan
2,867
$45.03
$129.10K
Karlin Daniel
25 Jun 2026
Chief Medical Officer
Sold on a plan
10,035
$45.03
$451.88K
Barrow Robert
25 Jun 2026
Chief Executive Officer
Sold on a plan
29,208
$45.03
$1.32M
Roberts Brandi
25 Jun 2026
Chief Financial Officer
Sold on a plan
3,013
$45.03
$135.68K
Sullivan Mark
25 Jun 2026
Chief Legal Officer
Sold on a plan
13,008
$45.03
$585.75K
Barrow Robert
25 Mar 2026
Chief Executive Officer
Sold on a plan
24,431
$18.47
$451.24K
Sullivan Mark
25 Mar 2026
Chief Legal Officer
Sold on a plan
10,702
$18.47
$197.67K
Karlin Daniel
25 Mar 2026
Chief Medical Officer
Sold on a plan
8,018
$18.47
$148.09K
Sullivan Mark
26 Dec 2025
Chief Legal Officer
Sold on a plan
11,276
$13.15
$148.24K
Barrow Robert
26 Dec 2025
Chief Executive Officer
Sold on a plan
25,791
$13.15
$339.07K
Karlin Daniel
26 Dec 2025
Chief Medical Officer
Sold on a plan
5,600
$13.15
$73.62K
Karlin Daniel
25 Sep 2025
Chief Medical Officer
Sold on a plan
7,704
$9.77
$75.27K
Barrow Robert
25 Sep 2025
Chief Executive Officer
Sold on a plan
25,797
$9.77
$252.04K
Sullivan Mark
25 Sep 2025
Chief Legal Officer
Sold on a plan
11,278
$9.77
$110.19K
Barrow Robert
25 Jun 2025
Chief Executive Officer
Sold on a plan
26,491
$6.80
$180.14K
Karlin Daniel
25 Jun 2025
Chief Medical Officer
Sold on a plan
7,848
$6.80
$53.37K
Sullivan Mark
25 Jun 2025
Chief Legal Officer
Sold on a plan
11,491
$6.80
$78.14K
Liao Carrie
25 Mar 2025
Chief Accounting Officer
Sold on a plan
2,347
$6.74
$15.82K
Sullivan Mark
25 Mar 2025
Chief Legal Officer
Sold on a plan
6,576
$6.74
$44.32K
Karlin Daniel
25 Mar 2025
Chief Medical Officer
Sold on a plan
6,836
$6.74
$46.07K
Barrow Robert
25 Mar 2025
Chief Executive Officer
Sold on a plan
21,208
$6.74
$142.94K
Sullivan Mark
26 Dec 2024
Chief Legal Officer
Sold on a plan
4,519
$7.43
$33.58K
Karlin Daniel
26 Dec 2024
Chief Medical Officer
Sold on a plan
6,643
$7.43
$49.36K
Liao Carrie
26 Dec 2024
Chief Accounting Officer
Sold on a plan
2,273
$7.43
$16.89K
Barrow Robert
26 Dec 2024
Chief Executive Officer
Sold on a plan
19,106
$7.43
$141.96K
Sullivan Mark
25 Sep 2024
Chief Legal Officer
Sold on a plan
4,430
$5.98
$26.49K
Karlin Daniel
25 Sep 2024
Chief Medical Officer
Sold on a plan
6,871
$5.98
$41.09K
Barrow Robert
25 Sep 2024
Chief Executive Officer
Sold on a plan
19,771
$5.98
$118.23K
Liao Carrie
25 Sep 2024
Chief Accounting Officer
Sold on a plan
2,352
$5.98
$14.06K
Barrow Robert
25 Jun 2024
Chief Executive Officer
Sold on a plan
15,659
$7.22
$113.06K
Sullivan Mark
25 Jun 2024
Chief Legal Officer
Sold on a plan
17,854
$7.22
$128.91K
Karlin Daniel
25 Jun 2024
Chief Medical Officer
Sold on a plan
6,925
$7.22
$50.00K
Barrow Robert
25 Mar 2024
Chief Executive Officer
Sold on a plan
16,519
$9.50
$156.93K
Karlin Daniel
25 Mar 2024
Chief Medical Officer
Sold on a plan
6,578
$9.50
$62.49K
Show all 81 transactions →

What was left out

Form 4 filings counted 153
Amendments (4/A) skipped 8
Filings about a different issuer 0
Unreadable filings 0
Joint filings 0
Sales on a Rule 10b5-1 plan 35
Sales straight out of an exercise 0
Sales at will 41
Transactions with no price 0
Shares from compensation/vesting 12,493,642
Sales filed before the plan box existed 25
History held since 19 Jan 2022