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Korro Bio Inc

For the period ended Dec 31, 2023. Filed Mar 26, 2024.

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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.

FY2023 · Filed Mar 26, 2024

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

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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 109 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
2.1+Agreement and Plan of Merger and Reorganization, dated as of July 14, 2023, by and among the registrant, Frequency Merger Sub, Inc. and the entity formerly known as Korro Bio, Inc. (incorporated by reference to Exhibit 2.1 to the registrant’s Current Report on Form 8-K filed on July 14, 2023).
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).
3.4Amended 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
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 20, 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. Non-Employee Director Compensation Policy (incorporated by reference to Exhibit 10.11 to the Form 8-K, filed November 6, 2023).
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#Frequency Therapeutics, Inc. 2019 Employee Stock Purchase Plan (incorporated by reference to Exhibit 10.13 to the registrant’s Registration Statement on Form S-1/A (333-233652) filed on September 23, 2019).
10.8#Korro Bio, Inc. Senior Executive Cash Incentive Bonus Plan (incorporated by reference to Exhibit 10.12 to the Form 8-K, filed November 6, 2023).
10.9#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 Form 8-K filed November 14, 2023).
10.10#Employment Agreement, dated November 8, 2023, by and between Korro Bio, Inc. and Vineet Agarwal (incorporated by reference to Exhibit 10.2 to the Form 8-K filed November 14, 2023).
10.11#Employment Agreement, dated November 8, 2023, by and between Korro Bio, Inc. and Shelby Walker (incorporated by reference to Exhibit 10.11 to the registrant’s Registration Statement on Form S-1/A filed December 20, 2023).
10.12#Employment Agreement, dated November 8, 2023, by and between Korro Bio, Inc. and Steve Colletti (incorporated by reference to Exhibit 10.12 to the registrant’s Registration Statement on Form S-1/A filed December 20, 2023).
10.13#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 20, 2023).
10.14#Form of Indemnification Agreement for Officers of Korro Bio, Inc. (incorporated by reference to Exhibit 10.6 to the Form 8-K filed November 6, 2023).
10.15#Form of Indemnification Agreement for Directors of Korro Bio, Inc. (incorporated by reference to Exhibit 10.7 to the Form 8-K filed November 6, 2023).
10.16Third 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 filed September 28, 2023).
10.17Form of Lock-Up Agreement (incorporated by reference to Exhibit 10.3 to the Form 8-K filed November 6, 2023).
10.18Contingent Value Rights Agreement dated November 3, 2023 (incorporated by reference to Exhibit 10.4 to the Form 8-K filed November 6, 2023).
10.19Lease Agreement, by and between Korro Bio, Inc. and ARE-MA Region No. 59, LLC, dated August 10, 2020, as amended on March 2, 2021 (incorporated by reference to Exhibit 10.21 to the Form S-4 filed September 28, 2023).
10.20Second Amendment to Lease Agreement, by and between Korro Bio, Inc. and ARE-MA Region No. 59, LLC, dated August 31, 2022.
10.21Third Amendment to Lease Agreement, by and between Korro Bio, Inc. and ARE-MA Region No. 59, LLC, dated October 20, 2023.
10.22Indenture of Lease, effective as of January 7, 2020 between HCP/KING 75 Hayden LLC and Frequency Therapeutics (incorporated by reference to Exhibit 10.13 to the registrant’s Annual Report on Form 10-K filed on March 26, 2020).
10.23Sublease Agreement, dated July 8, 2022, by and between Frequency Therapeutics, Inc., and SalioGen Therapeutics, Inc. (incorporated by reference to Exhibit 10.1 to the registrant’s Current Report on Form 8-K filed on July 12, 2022).
10.24Subscription Agreement, dated as of July 14, 2023 (incorporated by reference to Exhibit 10.1 to the registrant’s Current Report on Form 8-K filed on November 6, 2023).
10.25Registration 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).
10.26Warrant Agreement dated January 22, 2021 (incorporated by reference to Exhibit 10.13 to the Form 8-K, filed November 6, 2023).
21.1List of Subsidiaries.
23.1Consent of Ernst & Young LLP.
24.1Power of Attorney (included on the signature page attached hereto).
31.1Certification of Principal Executive 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.
31.2Certification of 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.
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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