Bristol James Arthur
SEC insider (Form 3/4/5 filer). CIK 0001715153. Director at Ernexa Therapeutics Inc. (ERNA) and 1 other issuer. 7 reported Form 4/5 transactions since Sep 2024; latest on Aug 31, 2026. Located in CAMBRIDGE, MA.
Companies Bristol James Arthur has filed insider reports for
- Ernexa Therapeutics Inc. (ERNA): Director
- Erasca, Inc. (ERAS): Director
Bristol James Arthur
CIK: 0001715153
Transaction Breakdown
High conviction signal
Position reduction
Derivative conversions
Compensation grants
Gifts, tax withholding, conversions, dispositions to the issuer and other codes
Discretionary Trading P&L
Holdings
Transaction History (7 total)
- Aug 31, 2026ERNA
Ernexa Therapeutics Inc.
AwardDirectStock Option (Right to buy)
8.3K shares- - Aug 31, 2026ERNA
Ernexa Therapeutics Inc.
AwardDirectStock Option (Right to buy)
5.1K shares- - Jun 26, 2026ERAS
Erasca, Inc.
AwardDirectStock option (right to buy)
29.9K shares- - Jan 1, 2026ERAS
Erasca, Inc.
AwardDirectStock Option (right to buy)
37.8K shares- - Jun 24, 2025ERAS
Erasca, Inc.
AwardDirectStock option (right to buy)
120K shares- - Feb 7, 2025ERNA
Eterna Therapeutics Inc.
AwardDirectStock Option (Right to buy)
72.1K shares- - Jan 1, 2025ERAS
Erasca, Inc.
AwardDirectStock Option (right to buy)
45.7K shares-
| Type | Shares | Price | Ownership | |||
|---|---|---|---|---|---|---|
| Aug 31, 2026 |  ERNA Ernexa Therapeutics Inc. | Award Stock Option (Right to buy) | 8,320 | - | - | Direct |
| Aug 31, 2026 | ERNA Ernexa Therapeutics Inc. | Award Stock Option (Right to buy) | 5,083 | - | - | Direct |
| Jun 26, 2026 |  ERAS Erasca, Inc. | Award Stock option (right to buy) | 29,888 | - | - | Direct |
| Jan 1, 2026 | ERAS Erasca, Inc. | Award Stock Option (right to buy) | 37,762 | - | - | Direct |
| Jun 24, 2025 | ERAS Erasca, Inc. | Award Stock option (right to buy) | 120,000 | - | - | Direct |
| Feb 7, 2025 | ERNA Eterna Therapeutics Inc. | Award Stock Option (Right to buy) | 72,074 | - | - | Direct |
| Jan 1, 2025 | ERAS Erasca, Inc. | Award Stock Option (right to buy) | 45,678 | - | - | Direct |
1-7 of 7 transactions