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Midas Edge

Korro Bio, Inc.

For the period ended Dec 31, 2025. Filed Mar 12, 2026.

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A company's yearly report to the SEC, with audited financial statements. It is the fullest account a company gives of its business, its finances and the risks it sees.

FY2025 · Filed Mar 12, 2026

KRRO$15.73+5.1%Stored close · as of Nov 10, 2026

Extracted filing text, with the paragraph anchors used by the comparison.

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Contents

Item 15. Exhibit and Financial Statement Schedules

(1)

For a list of the financial statements included herein, see the Index to the Consolidated Financial Statements in Item 8 on page F-110 of this Annual Report on Form 10-K, incorporated into this Item by reference.

(2)

Financial statement schedules have been omitted because they are either not required or not applicable or the information is included in the consolidated financial statements or the notes thereto.

(3)

Exhibits:

ExhibitNumberDescription
3.1Restated Certificate of Incorporation (incorporated by reference to Exhibit 3.1 to the registrant’s Current Report on Form 8-K filed on October 7, 2019).
3.2Certificate of Amendment to Restated Certificate of Incorporation (incorporated by reference to Exhibit 3.1 to the registrant’s Current Report on Form 8-K filed on November 6, 2023).
3.3Certificate of Amendment to Restated Certificate of Incorporation (incorporated by reference to Exhibit 3.2 to the registrant’s Current Report on Form 8-K filed on November 6, 2023).
3.4Certificate of Amendment to Restated Certificate of Incorporation (incorporated by reference to Exhibit 3.1 to the registrant’s Current Report on Form 8-K filed on June 12, 2024).
3.5Amended and Restated Bylaws (incorporated by reference to Exhibit 3.1 to the registrant’s Current Report on Form 8-K filed on September 23, 2020).
4.1Description of Securities (incorporated by reference to Exhibit 4.1 to the registrant’s Annual Report on Form 10-K filed on March 26, 2024).
10.1#Korro Bio, Inc. 2023 Stock Option and Incentive Plan, and form of award agreements thereunder (incorporated by reference to Exhibit 10.1 to the registrant’s Registration Statement on Form S-1/A filed December 20, 2023).
10.2#Korro Bio, Inc. 2023 Employee Stock Purchase Plan (incorporated by reference to Exhibit 10.2 to the registrant’s Registration Statement on Form S-1/A filed December 1, 2023).
10.3#Korro Bio, Inc. 2019 Stock Incentive Plan, and form of award agreements thereunder (incorporated by reference to Exhibit 10.8 to the registrant’s Current Report on Form 8-K filed on November 6, 2023).
10.4#Korro Bio, Inc. Amended and Restated Non-Employee Director Compensation Policy (incorporated by reference to Exhibit 10.4 to the registrant's Annual Report on Form 10-K filed on March 18, 2025).
10.5#Frequency Therapeutics, Inc. 2014 Stock Incentive Plan, as amended, and form of option agreements thereunder (incorporated by reference to Exhibit 10.1 to the registrant’s Registration Statement on Form S-1 (333-233652) filed on September 6, 2019).
10.6#Frequency Therapeutics, Inc. 2019 Incentive Award Plan and form of award agreements thereunder (incorporated by reference to Exhibit 10.2 to the registrant’s Registration Statement on Form S-1/A (333-233652) filed on September 23, 2019).
10.7#Korro Bio, Inc. Senior Executive Cash Incentive Bonus Plan (incorporated by reference to Exhibit 10.12 to the registrant’s Current Report on Form 8-K, filed November 6, 2023).
10.8#Employment Agreement, dated as of November 10, 2023, by and between Korro Bio, Inc. and Ram Aiyar, Ph.D. (incorporated by reference to Exhibit 10.1 to the registrant's Current Report on Form 8-K filed November 14, 2023).
10.9#Amended and Restated Employment Agreement, dated December 15, 2025, by and between Korro Bio, Inc. and Jeffrey Cerio (incorporated by reference to Exhibit 10.1 to the registrant’s Current Report on Form 8-K filed December 18, 2025).
10.10#Employment Agreement, dated November 9, 2023, by and between Korro Bio, Inc. and Todd Chappell (incorporated by reference to Exhibit 10.13 to the registrant’s Registration Statement on Form S-1/A filed December 1, 2023).
10.11#Employment Agreement, dated March 15, 2025, by and between Korro Bio, Inc. and Loϊc Vincent (incorporated by reference to Exhibit 10.1 to the registrant’s Quarterly Report on Form 10-Q filed May 7, 2025).
10.12#Separation Agreement and Release by and between Korro Bio, Inc. and Vineet Agarwal, dated October 7, 2025 (incorporated by reference to Exhibit 10.1 to the registrant’s Current Report on Form 8-K filed on October 8, 2025).
10.13#Separation Agreement and Release by and between Korro Bio, Inc. and Olukemi A. Olugemo, dated November 7, 2025 (incorporated by reference to Exhibit 10.3 to the registrant’s Quarterly Report on Form 10-Q filed November 12, 2025).
10.14#Consulting Agreement, dated August 26, 2024 between Korro Bio, Inc. and David Lucchino (incorporated by reference to Exhibit 10.3 to the registrant’s Quarterly Report on Form 10-Q filed November 12, 2024).
10.15#Form of Indemnification Agreement for Officers of Korro Bio, Inc. (incorporated by reference to Exhibit 10.6 to the registrant's Current Report on Form 8-K filed November 6, 2023).
10.16#Form of Indemnification Agreement for Directors of Korro Bio, Inc. (incorporated by reference to Exhibit 10.7 to the registrant's Current Report on Form 8-K filed November 6, 2023).
10.17‡Lease Agreement, dated April 25, 2022 between Korro Bio Ops, Inc. (formerly known as Korro Bio, Inc.) and NW Cambridge Property Owner LLC (incorporated by reference to Exhibit 10.2 to the registrant’s Quarterly Report on Form 10-Q filed November 12, 2024).
10.18Third Amended and Restated Investors’ Rights Agreement of Korro Bio, Inc., dated November 8, 2021 (incorporated by reference to Exhibit 10.27 to the Form S-4/A (333-273490) filed September 1, 2023).
10.19Warrant Agreement dated January 22, 2021 (incorporated by reference to Exhibit 10.13 to the registrant's Current Report on Form 8-K, filed November 6, 2023).
10.20Contingent Value Rights Agreement dated November 3, 2023 (incorporated by reference to Exhibit 10.4 to the registrant's Current Report on Form 8-K filed November 6, 2023).
10.21Registration Rights Agreement, dated as of July 14, 2023 (incorporated by reference to Exhibit 10.2 to the registrant’s Current Report on Form 8-K filed on November 6, 2023).
10.22+Registration Rights Agreement, dated as of April 17, 2024 (incorporated by reference to Exhibit 10.2 to the registrant’s Current Report on Form 8-K filed on April 18, 2024).
10.23Sales agreement, dated December 2, 2024, by and between Korro Bio, Inc. and TD Securities (USA) LLC (incorporated by reference to Exhibit 1.2 to the registrant’s Registration Statement on Form S-3 (333-283552) filed on December 2, 2024).
10.24Pre-Funded Warrant, dated March 9 2026, by and among Korro Bio, Inc. and the purchasers party thereto (incorporated by reference to Exhibit 4.1 to the registrant's Current Report on Form 8-K filed March 9, 2026).
10.25‡Subscription Agreement, dated March 9 2026, by and among Korro Bio, Inc. and the purchasers party thereto (incorporated by reference to Exhibit 10.1 to the registrant's Current Report on Form 8-K filed March 9, 2026).
10.26‡Registration Rights Agreement, dated March 9 2026, by and among Korro Bio, Inc. and the purchasers party thereto (incorporated by reference to Exhibit 10.2 to the registrant's Current Report on Form 8-K filed March 9, 2026).
10.27*Research Collaboration and License Agreement, dated September 13, 2024 between Korro Bio, Inc. and Novo Nordisk A/S (incorporated by reference to Exhibit 10.1 to the registrant’s Quarterly Report on Form 10-Q filed November 12, 2024).
10.28First Amendment to Research Collaboration and License Agreement by and between Korro Bio, Inc. and Novo Nordisk A/S (incorporated by reference to Exhibit 10.2 to the registrant’s Quarterly Report on Form 10-Q filed November 12, 2025).
19.1Korro Bio, Inc. Insider Trading Policy (incorporated by reference to Exhibit 19.1 to the registrant's Annual Report on Form 10-K filed March 18, 2025).
21.1List of Subsidiaries (incorporated by reference to Exhibit 21.1 to the registrant's Annual Report on Form 10-K filed March 18, 2025).
23.1Consent of Ernst & Young LLP.
24.1Power of Attorney (included on the signature page attached hereto).
31.1Certification of Principal Executive Officer and Principal Financial Officer Pursuant to Rules 13a-14(a) and 15d-14(a) under the Securities Exchange Act of 1934, as Adopted Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
32.1¥Certification of Principal Executive Officer and Principal Financial Officer Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
97.1#Korro Bio, Inc. Compensation Recovery Policy (incorporated by reference to Exhibit 97.1 to the registrant’s Annual Report on Form 10-K filed March 26, 2024).
101.INSInline XBRL Instance Document – the instance document does not appear in the Interactive Data File because XBRL tags are embedded within the Inline XBRL document.
101.SCHInline XBRL Taxonomy Extension Schema Document
104Cover Page Interactive Data File (embedded within the Inline XBRL document)
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