Cerio Jeffrey
SEC insider (Form 3/4/5 filer). CIK 0002033618. General Counsel at Korro Bio, Inc. (KRRO). 6 reported Form 4/5 transactions since Sep 2024; latest on Jul 15, 2026. Located in CAMBRIDGE, MA.
Companies Cerio Jeffrey has filed insider reports for
- Korro Bio, Inc. (KRRO): Officer, General Counsel
Cerio Jeffrey
CIK: 0002033618
Transaction Breakdown
Open Market Buys (P)0 (0.0%)
High conviction signal
Open Market Sales (S)1 (16.7%)
Position reduction
Option Exercises (M)0 (0.0%)
Derivative conversions
Awards (A)5 (83.3%)
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)
KRRO
Korro Bio, Inc.
Officer
Discretionary Trading P&L
Holdings
Transaction History (6 total)
- Jul 15, 2026KRRO
Korro Bio, Inc.
AwardDirect6.5K shares- - Jun 16, 2026KRRO
Korro Bio, Inc.
SaleDirect6.6K shares at avg. $10.83$72K - Feb 2, 2026KRRO
Korro Bio, Inc.
AwardDirectStock Option (Right to Buy)
23K shares- - Dec 15, 2025KRRO
Korro Bio, Inc.
AwardDirect41.9K shares- - Feb 3, 2025KRRO
Korro Bio, Inc.
AwardDirectStock Option (Right to Buy)
29K shares- - Sep 3, 2024KRRO
Korro Bio, Inc.
AwardDirectStock Option (Right to Buy)
40K shares-
| Type | Shares | Price | Ownership | |||
|---|---|---|---|---|---|---|
| Jul 15, 2026 | KRRO Korro Bio, Inc. | Award | 6,500 | - | $0 | Direct |
| Jun 16, 2026 | KRRO Korro Bio, Inc. | Sale | 6,609 | $10.83 | $71,575 | Direct |
| Feb 2, 2026 | KRRO Korro Bio, Inc. | Award Stock Option (Right to Buy) | 23,000 | - | - | Direct |
| Dec 15, 2025 | KRRO Korro Bio, Inc. | Award | 41,902 | - | - | Direct |
| Feb 3, 2025 | KRRO Korro Bio, Inc. | Award Stock Option (Right to Buy) | 29,000 | - | - | Direct |
| Sep 3, 2024 | KRRO Korro Bio, Inc. | Award Stock Option (Right to Buy) | 40,000 | - | - | Direct |
1-6 of 6 transactions