O'CALLAGHAN BRIAN
SEC insider (Form 3/4/5 filer). CIK 0001415015. Director at Bolt Biotherapeutics, Inc. (BOLT). 14 reported Form 4/5 transactions since Sep 2024; latest on Jun 10, 2026. Located in REDWOOD CITY, CA.
Companies O'CALLAGHAN BRIAN has filed insider reports for
- Bolt Biotherapeutics, Inc. (BOLT): Director
O'CALLAGHAN BRIAN
CIK: 0001415015
Transaction Breakdown
High conviction signal
Position reduction
Derivative conversions
Compensation grants
Gifts, tax withholding, conversions, dispositions to the issuer and other codes
Companies & Roles (1)
Bolt Biotherapeutics, Inc.
Discretionary Trading P&L
Holdings
Transaction History (14 total)
- Jun 10, 2026BOLT
Bolt Biotherapeutics, Inc.
AwardDirectStock Option (Right to Buy)
5K shares- - Dec 12, 2025BOLT
Bolt Biotherapeutics, Inc.
AwardDirectDirector Stock Option (Right to Buy)
1.4K shares- - Dec 12, 2025BOLT
Bolt Biotherapeutics, Inc.
DispositionDirectDirector Stock Option (Right to Buy)
1.4K shares- - Dec 12, 2025BOLT
Bolt Biotherapeutics, Inc.
AwardDirectDirector Stock Option (Right to Buy)
1.8K shares- - Dec 12, 2025BOLT
Bolt Biotherapeutics, Inc.
DispositionDirectDirector Stock Option (Right to Buy)
1.8K shares- - Dec 12, 2025BOLT
Bolt Biotherapeutics, Inc.
AwardDirectDirector Stock Option (Right to Buy)
1.3K shares- - Dec 12, 2025BOLT
Bolt Biotherapeutics, Inc.
DispositionDirectDirector Stock Option (Right to Buy)
1.3K shares- - Dec 12, 2025BOLT
Bolt Biotherapeutics, Inc.
AwardDirectDirector Stock Option (Right to Buy)
1.3K shares- - Dec 12, 2025BOLT
Bolt Biotherapeutics, Inc.
DispositionDirectDirector Stock Option (Right to Buy)
1.3K shares- - Dec 12, 2025BOLT
Bolt Biotherapeutics, Inc.
AwardDirectDirector Stock Option (Right to Buy)
1.1K shares-
| Type | Shares | Price | Ownership | |||
|---|---|---|---|---|---|---|
| Jun 10, 2026 | BOLT Bolt Biotherapeutics, Inc. | Award Stock Option (Right to Buy) | 5,000 | - | - | Direct |
| Dec 12, 2025 | BOLT Bolt Biotherapeutics, Inc. | Award Director Stock Option (Right to Buy) | 1,393 | - | - | Direct |
| Dec 12, 2025 | BOLT Bolt Biotherapeutics, Inc. | Disposition Director Stock Option (Right to Buy) | 1,393 | - | - | Direct |
| Dec 12, 2025 | BOLT Bolt Biotherapeutics, Inc. | Award Director Stock Option (Right to Buy) | 1,810 | - | - | Direct |
| Dec 12, 2025 | BOLT Bolt Biotherapeutics, Inc. | Disposition Director Stock Option (Right to Buy) | 1,810 | - | - | Direct |
| Dec 12, 2025 | BOLT Bolt Biotherapeutics, Inc. | Award Director Stock Option (Right to Buy) | 1,250 | - | - | Direct |
| Dec 12, 2025 | BOLT Bolt Biotherapeutics, Inc. | Disposition Director Stock Option (Right to Buy) | 1,250 | - | - | Direct |
| Dec 12, 2025 | BOLT Bolt Biotherapeutics, Inc. | Award Director Stock Option (Right to Buy) | 1,250 | - | - | Direct |
| Dec 12, 2025 | BOLT Bolt Biotherapeutics, Inc. | Disposition Director Stock Option (Right to Buy) | 1,250 | - | - | Direct |
| Dec 12, 2025 | BOLT Bolt Biotherapeutics, Inc. | Award Director Stock Option (Right to Buy) | 1,100 | - | - | Direct |
1-10 of 14 transactions