Todd Chappell

CIK: 0001997992

Transaction Breakdown

Open Market Buys (P)0 (0.0%)

High conviction signal

Open Market Sales (S)1 (20.0%)

Position reduction

Option Exercises (M)0 (0.0%)

Derivative conversions

Awards (A)4 (80.0%)

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 (5 total)

KRRO
Korro Bio, Inc.
Jul 15, 2026
Award(A)
Direct
7.5K shares-
KRRO
Korro Bio, Inc.
Jun 16, 2026
Sale(S)
Direct
3.2K shares at avg. $10.83$34K
KRRO
Korro Bio, Inc.
Feb 2, 2026
Award(A)
Stock Option (Right to Buy)
Direct
38K shares-
KRRO
Korro Bio, Inc.
Dec 15, 2025
Award(A)
Direct
20.1K shares-
KRRO
Korro Bio, Inc.
Feb 3, 2025
Award(A)
Stock Option (Right to Buy)
Direct
34.5K shares-

		Type	Shares	Price		Ownership
Jul 15, 2026	KRRO Korro Bio, Inc.	Award(A)	7,500	-	$0	Direct
Jun 16, 2026	KRRO Korro Bio, Inc.	Sale(S)	3,168	$10.83	$34,309	Direct
Feb 2, 2026	KRRO Korro Bio, Inc.	Award(A) Stock Option (Right to Buy)	38,000	-	-	Direct
Dec 15, 2025	KRRO Korro Bio, Inc.	Award(A)	20,132	-	-	Direct
Feb 3, 2025	KRRO Korro Bio, Inc.	Award(A) Stock Option (Right to Buy)	34,500	-	-	Direct

1-5 of 5 transactions

About Chappell Todd

Chappell Todd (SEC CIK 0001997992) files insider reports with the SEC as Chief Operating Officer of Korro Bio, Inc. (KRRO).

Signal8 holds 5 ownership filings by Chappell Todd, all Form 4s, filed between Feb 5, 2025 and Jul 17, 2026. Those filings report 5 transactions, from Feb 3, 2025 to Jul 15, 2026. Signal8's Form 4 history starts in Sep 2024.

The business address on Chappell Todd's filings is in CAMBRIDGE, MA.

Recent filings by Chappell Todd

Jul 15, 2026: Grant or award of KRRO shares (Form 4, code A).
Jun 16, 2026: Open-market sale of KRRO shares (Form 4, code S).
Feb 2, 2026: Grant or award of KRRO derivative securities (Form 4, code A).
Dec 15, 2025: Grant or award of KRRO shares (Form 4, code A).
Feb 3, 2025: Grant or award of KRRO derivative securities (Form 4, code A).

Other insiders filing for Korro Bio, Inc. (KRRO)

Lynx1 Capital Management LP, 10% Owner
FORMELA JEAN FRANCOIS, Director
Dolan Oliver, Senior Vice President, Finance
Aiyar Ram, President and CEO
Vincent Loic A, Chief Scientific Officer
Cerio Jeffrey, General Counsel

How to read Form 4 transaction codes