Robert Barrow

CIK: 0001897557

Transaction Breakdown

Open Market Buys (P)0 (0.0%)

High conviction signal

Open Market Sales (S)10 (62.5%)

Position reduction

Option Exercises (M)0 (0.0%)

Derivative conversions

Awards (A)6 (37.5%)

Compensation grants

Other (G, F, J, C, D, …)0 (0.0%)

Gifts, tax withholding, conversions, dispositions to the issuer and other codes

Companies & Roles (1)

DFTX

Definium Therapeutics, Inc.

DirectorOfficer

Discretionary Trading P&L

Holdings

Transaction History (16 total)

DFTX
Definium Therapeutics, Inc.
Sep 25, 2026
Sale(S)
Direct
31.6K shares at avg. $36.57$1.2M
DFTX
Definium Therapeutics, Inc.
Sep 14, 2026
Award(A)
Direct
750K shares-
DFTX
Definium Therapeutics, Inc.
Sep 3, 2026
Sale(S)
Direct
19K shares at avg. $37.94$722K
DFTX
Definium Therapeutics, Inc.
Sep 2, 2026
Award(A)
Direct
40K shares-
DFTX
Definium Therapeutics, Inc.
Aug 12, 2026
Award(A)
Direct
375K shares-
DFTX
Definium Therapeutics, Inc.
Jun 25, 2026
Sale(S)
Direct
29.2K shares at avg. $45.03$1.3M
DFTX
Definium Therapeutics, Inc.
Jun 22, 2026
Award(A)
Direct
375K shares-
DFTX
Definium Therapeutics, Inc.
Mar 25, 2026
Sale(S)
Direct
24.4K shares at avg. $18.47$451K
DFTX
Definium Therapeutics, Inc.
Feb 3, 2026
Award(A)
Direct
320K shares-
MNMD
Mind Medicine (MindMed) Inc.
Dec 26, 2025
Sale(S)
Direct
25.8K shares at avg. $13.15$339K
MNMD
Mind Medicine (MindMed) Inc.
Sep 25, 2025
Sale(S)
Direct
25.8K shares at avg. $9.77$252K
MNMD
Mind Medicine (MindMed) Inc.
Jun 25, 2025
Sale(S)
Direct
26.5K shares at avg. $6.80$180K
MNMD
Mind Medicine (MindMed) Inc.
Mar 25, 2025
Sale(S)
Direct
21.2K shares at avg. $6.74$143K
MNMD
Mind Medicine (MindMed) Inc.
Mar 12, 2025
Award(A)
Direct
350K shares-
MNMD
Mind Medicine (MindMed) Inc.
Dec 26, 2024
Sale(S)
Direct
19.1K shares at avg. $7.43$142K
MNMD
Mind Medicine (MindMed) Inc.
Sep 25, 2024
Sale(S)
Direct
19.8K shares at avg. $5.98$118K

		Type	Shares	Price		Ownership
Sep 25, 2026	DFTX Definium Therapeutics, Inc.	Sale(S)	31,550	$36.57	$1,153,784	Direct
Sep 14, 2026	DFTX Definium Therapeutics, Inc.	Award(A)	750,000	-	$0	Direct
Sep 3, 2026	DFTX Definium Therapeutics, Inc.	Sale(S)	19,023	$37.94	$721,733	Direct
Sep 2, 2026	DFTX Definium Therapeutics, Inc.	Award(A)	40,000	-	$0	Direct
Aug 12, 2026	DFTX Definium Therapeutics, Inc.	Award(A)	375,000	-	$0	Direct
Jun 25, 2026	DFTX Definium Therapeutics, Inc.	Sale(S)	29,208	$45.03	$1,315,236	Direct
Jun 22, 2026	DFTX Definium Therapeutics, Inc.	Award(A)	375,000	-	$0	Direct
Mar 25, 2026	DFTX Definium Therapeutics, Inc.	Sale(S)	24,431	$18.47	$451,241	Direct
Feb 3, 2026	DFTX Definium Therapeutics, Inc.	Award(A)	320,000	-	$0	Direct
Dec 26, 2025	MNMD Mind Medicine (MindMed) Inc.	Sale(S)	25,791	$13.15	$339,072	Direct
Sep 25, 2025	MNMD Mind Medicine (MindMed) Inc.	Sale(S)	25,797	$9.77	$252,037	Direct
Jun 25, 2025	MNMD Mind Medicine (MindMed) Inc.	Sale(S)	26,491	$6.80	$180,139	Direct
Mar 25, 2025	MNMD Mind Medicine (MindMed) Inc.	Sale(S)	21,208	$6.74	$142,942	Direct
Mar 12, 2025	MNMD Mind Medicine (MindMed) Inc.	Award(A)	350,000	-	-	Direct
Dec 26, 2024	MNMD Mind Medicine (MindMed) Inc.	Sale(S)	19,106	$7.43	$141,958	Direct
Sep 25, 2024	MNMD Mind Medicine (MindMed) Inc.	Sale(S)	19,771	$5.98	$118,231	Direct

1-16 of 16 transactions

About Barrow Robert

Barrow Robert (SEC CIK 0001897557) files insider reports with the SEC as Chief Executive Officer of Definium Therapeutics, Inc. (DFTX).

Signal8 holds 15 ownership filings by Barrow Robert, all Form 4s, filed between Sep 25, 2024 and Sep 29, 2026. Those filings report 16 transactions, from Sep 25, 2024 to Sep 25, 2026. Signal8's Form 4 history starts in Sep 2024.

The business address on Barrow Robert's filings is in NEW YORK, NY.

Recent filings by Barrow Robert

Sep 25, 2026: Open-market sale of DFTX shares (Form 4, code S).
Sep 14, 2026: Grant or award of DFTX shares (Form 4, code A).
Sep 3, 2026: Open-market sale of DFTX shares (Form 4, code S).
Sep 2, 2026: Grant or award of DFTX shares (Form 4, code A).
Aug 12, 2026: Grant or award of DFTX shares (Form 4, code A).

Other insiders filing for Definium Therapeutics, Inc. (DFTX)

Karlin Daniel, Chief Medical Officer
Wiley Matthew T., Chief Commercial Officer
Sullivan Mark, Chief Legal Officer
Roberts Brandi, Chief Financial Officer
Vallone Carol A, Director
Krebs Andreas, Director

How to read Form 4 transaction codes