Sec Form 4 Filing - Gu Ehong @ LianBio - 2024-01-02

FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person Gu Ehong 2. Issuer Name and Ticker or Trading Symbol LianBio [ LIAN] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner X __ Officer (give title below) _____ Other (specify below) Interim CFO (Last) (First) (Middle) C/O LIANBIO, 103 CARNEGIE CENTER DRIVE, SUITE 309 3. Date of Earliest Transaction (MM/DD/YY) 01/02/2024 (Street) PRINCETON, NJ08540 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) __ X __ Form filed by One Reporting Person _____ Form filed by More than One Reporting Person (City) (State) (Zip)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned 1.Title of Security (Instr. 3) 2. Transaction Date (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Ordinary Shares 01/02/2024 S 1,731 D $ 4.34 76,762 ( 1 ) D Ordinary Shares 04/09/2024 D 17,889 D $ 0.32 0 D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities) 1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5) 6. Date Exercisable and Expiration Date (MM/DD/YY) 7. Title and Amount of Underlying Securities (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4) Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Gu Ehong C/O LIANBIO 103 CARNEGIE CENTER DRIVE, SUITE 309 PRINCETON, NJ08540 Interim CFO Signatures /s/ Brianne Jahn, Attorney-in-Fact 04/11/2024 Signature of Reporting Person Date

Explanation of Responses:

( 1 )Represents the sale of shares to cover personal income tax obligations upon vesting of restricted share units ('RSUs') as required pursuant to the terms of Ms. Gu's RSU award agreement. 41,078 RSUs were granted to Ms. Gu under the LianBio 2021 Equity Incentive Plan (the 'Plan') on December 31, 2021, 25% of which vested on each of December 31, 2022 and 2023 with the remainder to vest in 25% annual installments and to be fully vested on December 31, 2025, subject to Ms. Gu's providing continuous service to the Issuer on each such date. On March 22, 2024, the board of directors of the Issuer resolved to terminate the Plan and any unvested RSUs granted thereunder in accordance with the terms of the Plan, effective as of March 24, 2024. In accordance with this determination, 58,873 unvested RSUs previously reported as beneficially owned by Ms. Gu were cancelled. Ms. Gu received no value in exchange for the cancellation of the unvested RSUs.

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).

** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

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