James Arthur Bristol
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.
Award(A)DirectStock Option (Right to buy)
8.3K shares- - Aug 31, 2026ERNA
Ernexa Therapeutics Inc.
Award(A)DirectStock Option (Right to buy)
5.1K shares- - Jun 26, 2026ERAS
Erasca, Inc.
Award(A)DirectStock option (right to buy)
29.9K shares- - Jan 1, 2026ERAS
Erasca, Inc.
Award(A)DirectStock Option (right to buy)
37.8K shares- - Jun 24, 2025ERAS
Erasca, Inc.
Award(A)DirectStock option (right to buy)
120K shares- - Feb 7, 2025ERNA
Eterna Therapeutics Inc.
Award(A)DirectStock Option (Right to buy)
72.1K shares- - Jan 1, 2025ERAS
Erasca, Inc.
Award(A)DirectStock Option (right to buy)
45.7K shares-
| Type | Shares | Price | Ownership | |||
|---|---|---|---|---|---|---|
| Aug 31, 2026 |  ERNA Ernexa Therapeutics Inc. | Award(A) Stock Option (Right to buy) | 8,320 | - | - | Direct |
| Aug 31, 2026 | ERNA Ernexa Therapeutics Inc. | Award(A) Stock Option (Right to buy) | 5,083 | - | - | Direct |
| Jun 26, 2026 |  ERAS Erasca, Inc. | Award(A) Stock option (right to buy) | 29,888 | - | - | Direct |
| Jan 1, 2026 | ERAS Erasca, Inc. | Award(A) Stock Option (right to buy) | 37,762 | - | - | Direct |
| Jun 24, 2025 | ERAS Erasca, Inc. | Award(A) Stock option (right to buy) | 120,000 | - | - | Direct |
| Feb 7, 2025 | ERNA Eterna Therapeutics Inc. | Award(A) Stock Option (Right to buy) | 72,074 | - | - | Direct |
| Jan 1, 2025 | ERAS Erasca, Inc. | Award(A) Stock Option (right to buy) | 45,678 | - | - | Direct |
1-7 of 7 transactions
About Bristol James Arthur
Bristol James Arthur (SEC CIK 0001715153) files insider reports with the SEC as Director of Ernexa Therapeutics Inc. (ERNA) and Director of Erasca, Inc. (ERAS).
Signal8 holds 6 ownership filings by Bristol James Arthur, all Form 4s, filed between Jan 2, 2025 and Sep 1, 2026. Those filings report 7 transactions, from Jan 1, 2025 to Aug 31, 2026. Signal8's Form 4 history starts in Sep 2024.
The business address on Bristol James Arthur's filings is in CAMBRIDGE, MA.
Recent filings by Bristol James Arthur
- Aug 31, 2026: Grants or awards of ERNA derivative securities (2 lines, Form 4, code A).
- Jun 26, 2026: Grant or award of ERAS derivative securities (Form 4, code A).
- Jan 1, 2026: Grant or award of ERAS derivative securities (Form 4, code A).
- Jun 24, 2025: Grant or award of ERAS derivative securities (Form 4, code A).
- Feb 7, 2025: Grant or award of ERNA derivative securities (Form 4, code A).
Other insiders filing for Ernexa Therapeutics Inc. (ERNA)
- Spiegel Robert J., Director
- Cicala Peter, Director
- Polinsky David, Director
- Wexler William A., Director
- Ratner Elena, Director
- Luther Sanjeev, President and CEO