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    Director Baker Bros. Advisors Lp was granted 16,794 units of Class A Ordinary Shares (SEC Form 4)

    6/5/25 5:06:51 PM ET
    $KNSA
    Biotechnology: Pharmaceutical Preparations
    Health Care
    Get the next $KNSA alert in real time by email
    SEC FORM 4 SEC Form 4
    FORM 4 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
    or Section 30(h) of the Investment Company Act of 1940
    OMB APPROVAL
    OMB Number: 3235-0287
    Estimated average burden
    hours per response: 0.5
      
    Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
      
    Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.
    1. Name and Address of Reporting Person*
    BAKER BROS. ADVISORS LP

    (Last) (First) (Middle)
    860 WASHINGTON STREET
    3RD FLOOR

    (Street)
    NEW YORK NY 10014

    (City) (State) (Zip)
    2. Issuer Name and Ticker or Trading Symbol
    Kiniksa Pharmaceuticals International, plc [ KNSA ]
    5. Relationship of Reporting Person(s) to Issuer
    (Check all applicable)
    X Director 10% Owner
    Officer (give title below) Other (specify below)
    3. Date of Earliest Transaction (Month/Day/Year)
    06/03/2025
    4. If Amendment, Date of Original Filed (Month/Day/Year)
    6. Individual or Joint/Group Filing (Check Applicable Line)
    Form filed by One Reporting Person
    X Form filed by More than One Reporting Person
    Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
    1. Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 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
    Class A Ordinary Shares 06/03/2025 A 8,397(1) A $0 137,199 I See Footnotes(2)(3)(4)(5)(6)(7)(8)
    Class A Ordinary Shares 06/03/2025 A 8,397(1) A $0 2,738,816 I See Footnotes(3)(4)(5)(6)(7)(8)(9)
    Class A Ordinary Shares 14,840(10) D
    Class A Ordinary Shares 14,840(11) 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 (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 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 (Month/Day/Year) 7. Title and Amount of Securities Underlying Derivative Security (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: 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
    Non- Qualified Share Option (right to buy) $29.11 06/03/2025 A 50,394(12) (12) 06/02/2035 Class A Ordinary Shares 50,394 $0 50,394 I See Footnotes(2)(3)(4)(5)(6)(7)
    Non- Qualified Share Option (right to buy) $29.11 06/03/2025 A 50,394(12) (12) 06/02/2035 Class A Ordinary Shares 50,394 $0 50,394 I See Footnotes(3)(4)(5)(6)(7)(9)
    1. Name and Address of Reporting Person*
    BAKER BROS. ADVISORS LP

    (Last) (First) (Middle)
    860 WASHINGTON STREET
    3RD FLOOR

    (Street)
    NEW YORK NY 10014

    (City) (State) (Zip)

    Relationship of Reporting Person(s) to Issuer
    X Director 10% Owner
    Officer (give title below) Other (specify below)
    1. Name and Address of Reporting Person*
    667, L.P.

    (Last) (First) (Middle)
    860 WASHINGTON STREET, 3RD FLOOR

    (Street)
    NEW YORK NY 10014

    (City) (State) (Zip)

    Relationship of Reporting Person(s) to Issuer
    X Director 10% Owner
    Officer (give title below) Other (specify below)
    1. Name and Address of Reporting Person*
    Baker Bros. Advisors (GP) LLC

    (Last) (First) (Middle)
    860 WASHINGTON STREET
    3RD FLOOR

    (Street)
    NEW YORK NY 10014

    (City) (State) (Zip)

    Relationship of Reporting Person(s) to Issuer
    X Director 10% Owner
    Officer (give title below) Other (specify below)
    1. Name and Address of Reporting Person*
    Baker Brothers Life Sciences LP

    (Last) (First) (Middle)
    860 WASHINGTON STREET
    3RD FLOOR

    (Street)
    NEW YORK NY 10014

    (City) (State) (Zip)

    Relationship of Reporting Person(s) to Issuer
    X Director 10% Owner
    Officer (give title below) Other (specify below)
    1. Name and Address of Reporting Person*
    BAKER FELIX

    (Last) (First) (Middle)
    860 WASHINGTON STREET
    3RD FLOOR

    (Street)
    NEW YORK NY 10014

    (City) (State) (Zip)

    Relationship of Reporting Person(s) to Issuer
    X Director 10% Owner
    Officer (give title below) Other (specify below)
    1. Name and Address of Reporting Person*
    BAKER JULIAN

    (Last) (First) (Middle)
    860 WASHINGTON STREET, 3RD FLOOR

    (Street)
    NEW YORK NY 10014

    (City) (State) (Zip)

    Relationship of Reporting Person(s) to Issuer
    X Director 10% Owner
    Officer (give title below) Other (specify below)
    Explanation of Responses:
    1. Includes 2,799 restricted share units (each an "RSU") payable solely in Class A ordinary shares ("Class A Ordinary Shares") granted by Kiniksa Pharmaceuticals International, plc. (the "Issuer") to each of Felix J. Baker, a managing member of Baker Bros. Advisors (GP) LLC (the "Adviser GP"), and Dr. Stephen R. Biggar and M. Cantey Boyd, employees of Baker Bros. Advisors LP (the "Adviser"), on June 3, 2025, pursuant to the Issuer's 2018 Incentive Award Plan, as amended (the "Incentive Award Plan"). The RSUs fully vest on the earlier of June 3, 2026 or the date of the next annual meeting of shareholder's of the Issuer, subject to the applicable director's continuous service on the board of directors of the Issuer (the "Board") through the vesting date. Felix J. Baker, Dr. Biggar and M. Cantey Boyd serve on the Board as representatives of 667, L.P. ("667") and Baker Brothers Life Sciences, L.P. ("Life Sciences", and together with 667, the "Funds") and their affiliates and control persons.
    2. After giving effect to the transactions reported herein and as a result of their ownership interest in (i) Baker Biotech Capital, L.P. and (ii) 667, Julian C. Baker and Felix J. Baker each may be deemed to have an indirect pecuniary interest in Class A Ordinary Shares reported in column 5 of Table I and the Share Options (as defined below) reported in column 9 of Table II held directly by or held for the benefit of 667, a limited partnership of which the sole general partner is Baker Biotech Capital, L.P., a limited partnership of which the sole general partner is Baker Biotech Capital (GP), LLC, due to their interest in 667 and Baker Biotech Capital, L.P.'s right to receive an allocation of a portion of the profits from 667.
    3. Pursuant to the policies of the Adviser, Felix J. Baker, Dr. Biggar and M. Cantey Boyd do not have a right to any of the Issuer's securities issued as compensation for their service on the Board and the Funds are entitled to an indirect proportionate pecuniary interest in such securities. The Funds each own an indirect proportionate pecuniary interest in the non-qualified share options exercisable solely into Class A Ordinary Shares ("Share Options") and RSUs. Solely as a result of their ownership interest in (i) the general partners of the Funds and (ii) the Funds, Felix J. Baker and Julian C. Baker may be deemed to have an indirect pecuniary interest in the Share Options, RSUs and any Class A Ordinary Shares acquired upon the exercise of Share Options or vesting of RSUs (i.e. no direct pecuniary interest) issued as compensation for such Board Service.
    4. The Adviser serves as the investment adviser to the Funds. In connection with the services provided by the Adviser, the Adviser receives an asset-based management fee that does not confer any pecuniary interest in the securities held directly by the Funds or for the benefit of the Funds. The Adviser GP is the Adviser's sole general partner. Julian C. Baker and Felix J. Baker are managing members of the Adviser GP. The Adviser has complete and unlimited discretion and authority with respect to the investment and voting power of the securities held directly by the Funds or for the benefit of the Funds. The general partners of the Funds relinquished to the Adviser all discretion and authority with respect to the investment and voting power of the securities held directly by the Funds or for the benefit of the Funds.
    5. Julian C. Baker, Felix J. Baker, the Adviser GP and the Adviser disclaim beneficial ownership of the securities held directly by or held for the benefit of the Funds except to the extent of their pecuniary interest therein, and this report shall not be deemed an admission that any of Julian C. Baker, Felix J. Baker, the Adviser GP or the Adviser is a beneficial owner of such securities for purposes of Section 16 or any other purpose.
    6. Pursuant the policies of the Adviser, the Adviser has voting and dispositive power over the Share Options, RSUs and any Class A Ordinary Shares received as a result of the exercise of Share Options or vesting of RSUs.
    7. The acquisitions of the RSUs and Share Options reported on this form represent grants to each of Felix J. Baker, Dr. Biggar and M. Cantey Boyd of 2,799 RSUs on Table I and 16,798 Share Options on Table II. These grants, totaling 8,397 RSUs and 50,394 Share Options for Felix J. Baker, Dr. Biggar and M. Cantey Boyd in the aggregate, are reported for each of the Funds as each has an indirect pecuniary interest in such securities.
    8. Includes beneficial ownership of 12,546 Class A Ordinary Shares received from vested RSUs each previously granted to Felix J. Baker and Dr. Biggar and 4,730 Class A Ordinary Shares received from vested RSUs previously granted to M. Cantey Boyd, in their capacity as directors of the Issuer.
    9. After giving effect to the transactions reported herein and as a result of their ownership interest in (i) Baker Brothers Life Sciences Capital, L.P. and (ii) Life Sciences, Julian C. Baker and Felix J. Baker each may be deemed to have an indirect pecuniary interest in Class A Ordinary Shares reported in column 5 of Table I and the Share Options reported in column 9 of Table II held directly by or held for the benefit of Life Sciences, a limited partnership of which the sole general partner is Baker Brothers Life Sciences Capital, L.P., a limited partnership of which the sole general partner is Baker Brothers Life Sciences Capital (GP), LLC, due to their interest in Life Sciences and Baker Brothers Life Sciences Capital, L.P.'s right to receive an allocation of a portion of the profits from Life Sciences.
    10. Class A Ordinary Shares held directly by Felix J. Baker.
    11. Class A Ordinary Shares held directly by Julian C. Baker.
    12. Includes 16,798 Share Options granted by the Issuer to each of Felix J. Baker, Dr. Biggar and M. Cantey Boyd on June 3, 2025, pursuant to the Incentive Award Plan. The Share Options have a strike price of $29.11 and vest in 12 equal monthly installments beginning on July 3, 2025 with the final installment vesting on the earlier of June 3, 2026 or the date of the next annual meeting of shareholder's of the Issuer, subject to the applicable director's continuous service on the Board through the vesting date. The Share Options expire 10 years from the date of grant.
    Remarks:
    Felix J. Baker, a managing member of Baker Bros. Advisors (GP) LLC and Dr. Biggar, and M. Cantey Boyd full-time employee of Baker Bros. Advisors LP, are directors of Kiniksa Pharmaceuticals International, plc. (the "Issuer"). By virtue of their representation on the board of directors of the Issuer, for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, the reporting persons other than Felix J. Baker are deemed directors by deputization of the Issuer.
    By: Baker Bros. Advisors LP, Name: Scott L. Lessing, Title: President /s/ Scott L. Lessing 06/05/2025
    Baker Bros. Advisors LP, Mgmt. Co. and Inv. Adviser to 667, L.P., pursuant to authority granted by Baker Biotech Capital, L.P., GP to 667, L.P. Name: Scott L. Lessing, Title: President /s/ Scott L. Lessing 06/05/2025
    By: Baker Bros. Advisors (GP) LLC, Name: Scott L. Lessing, Title: President /s/ Scott L. Lessing 06/05/2025
    Baker Bros. Advisors LP, Mgmt. Co. and Inv. Adviser to BAKER BROTHERS LIFE SCIENCES, L.P., pursuant to authority granted by Baker Brothers Life Sciences Capital, L.P., GP to Baker Brothers Life Sciences, L.P., /s/ Name: Scott L. Lessing, Title: President 06/05/2025
    /s/ Felix J. Baker 06/05/2025
    /s/ Julian C. Baker 06/05/2025
    ** Signature of Reporting Person Date
    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).
    Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
    Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
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