New Enterprise Associates 17, L.P. - 10 Mar 2026 Form 4 Insider Report for Korro Bio, Inc. (KRRO)

Role
10%+ Owner
Signature
/s/ Zachary Bambach, attorney-in-fact
Issuer symbol
KRRO
Transactions as of
10 Mar 2026
Net transactions value
+$2,300,881
Form type
4
Filing time
12 Mar 2026, 20:15:13 UTC
Previous filing
11 Feb 2026
SEC
View on sec.gov

Reporting Owners (3)

Name Relationship Address Signature Signature date CIK
New Enterprise Associates 17, L.P. 10%+ Owner 1954 GREENSPRING DRIVE, SUITE 600, TIMONIUM /s/ Zachary Bambach, attorney-in-fact 12 Mar 2026 0001768564
NEA Partners 17, L.P. 10%+ Owner 1954 GREENSPRING DRIVE, SUITE 600, TIMONIUM /s/ Zachary Bambach, attorney-in-fact 12 Mar 2026 0001796820
NEA 17 GP, LLC 10%+ Owner 1954 GREENSPRING DRIVE, SUITE 600, TIMONIUM /s/ Zachary Bambach, attorney-in-fact 12 Mar 2026 0001796821

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction KRRO Common Stock Purchase $2,300,881 +207,100 +19% $11.11 1,297,893 10 Mar 2026 Direct F1, F2

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
transaction KRRO Pre-Funded Warrants Purchase +242,945 $11.11 242,945 10 Mar 2026 Common Stock 242,945 $0.001000 Direct F1, F2, F3
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

New Enterprise Associates 17, L.P. is no longer subject to Section 16 filing requirements. Form 4 or Form 5 obligations may continue.

Explanation of Responses:

Id Content
F1 Acquired from the Issuer on March 10, 2026 pursuant to a Subscription Agreement dated March 9, 2026.
F2 The securities are directly held by New Enterprise Associates 17, L.P. ("NEA 17") and are indirectly held by NEA Partners 17, L.P. ("NEA Partners 17"), the sole general partner of NEA 17, NEA 17 GP, LLC ("NEA 17 GP"), the sole general partner of NEA Partners 17, and the individual managers of NEA 17 GP (NEA Partners 17, NEA 17 GP and the individual managers of NEA 17 GP (collectively, the "Managers") together, the "Indirect Reporting Persons"). The Mangers are Forest Baskett, Ali Behbahani, Carmen Chang, Anthony Florence, Jr., Mohamad Makhzoumi, Edward Mathers, Scott Sandell, Paul Walker and Rick Yang. The Indirect Reporting Persons disclaim beneficial ownership within the meaning of Section 16 of the Securities Exchange Act of 1934, as amended, or otherwise of such portion of the securities held by NEA 17 in which the Indirect Reporting Persons have no pecuniary interest.
F3 The Pre-Funded Warrants are exercisable at any time after their issuance; provided, however, that the Pre-Funded Warrants may not be exercised to the extent such exercise would cause the number of shares of the Issuer's Common Stock owned by the holder (together with its affiliates and certain other related parties) to exceed 9.99% of the total number of shares of the Issuer's Common Stock immediately after giving effect to such exercise, which percentage may be increased or decreased at the option of the holder upon 61 days' prior notice to the Issuer, not to exceed 19.99%.