Sec Form 4 Filing - Onex US Principals LP @ CLARIVATE Plc - 2021-06-14

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 Onex US Principals LP 2. Issuer Name and Ticker or Trading Symbol CLARIVATE Plc [ CLVT] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director X __ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) 165 W CENTER STREET, SUITE 401 3. Date of Earliest Transaction (MM/DD/YY) 06/14/2021 (Street) MARION, OH43302 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) _____ Form filed by One Reporting Person __ X __ 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 06/14/2021 S 10,562,882 D $ 25.22 60,855,384 I See footnotes ( 1 ) ( 2 ) ( 3 )

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 Onex US Principals LP 165 W CENTER STREET, SUITE 401 MARION, OH43302 X New PCo GP Inc 161 BAY STREET TORONTO, A6M5J 2S1 X New PCo A LP 161 BAY STREET TORONTO, A6M5J 2S1 X SCHWARTZ GERALD W 161 BAY STREET TORONTO, A6M5J 2S1 X Onex Private Equity Holdings LLC 165 W CENTER STREET, SUITE 401 MARION, OH43302 X Onex American Holdings Subco LLC 165 W CENTER STREET, SUITE 401 MARION, OH43302 X Onex Partners Holdings LLC 165 W CENTER STREET, SUITE 401 MARION, OH43302 X Signatures Onex US Principals LP By: Onex American Holdings GP LLC, its general partner By: /s/ Joshua Hausman, Director 06/16/2021 Signature of Reporting Person Date Onex Private Equity Holdings LLC By: /s/ Joshua Hausman, Director 06/16/2021 Signature of Reporting Person Date Onex American Holdings Subco LLC By: /s/ Joshua Hausman, Director 06/16/2021 Signature of Reporting Person Date Onex Partners Holdings LLC By: /s/ Joshua Hausman, Director 06/16/2021 Signature of Reporting Person Date New PCo GP Inc. By: /s/ Michelle Iskander, Secretary 06/16/2021 Signature of Reporting Person Date New PCo A LP By: New PCo GP Inc., its general partner By: /s/ Michelle Iskander, Secretary 06/16/2021 Signature of Reporting Person Date Gerald W. Schwartz By: /s/ Andrea E. Daly, attorney-in-fact 06/16/2021 Signature of Reporting Person Date

Explanation of Responses:

( 1 )Following the transaction reported herein, represents: (i) 22,541,934 ordinary shares held by Onex Partners IV LP ("Onex IV"), (ii) 1,114,405 ordinary shares held by Onex Partners IV PV LP ("Onex IV PV"), (iii) 156,045 ordinary shares held by Onex Partners IV Select LP ("Onex IV Select"), (iv) 644,675 ordinary shares held by Onex Partners IV GP LP ("Onex IV GP"), (v) 830,623 ordinary shares held by Onex US Principals LP ("Onex US"), (vi) 21,044,821 ordinary shares held by Onex Partners Holdings LLC ("Onex Holdings"), (vii) 1,332,327 ordinary shares held by New PCo A LP ("New PCo") and (viii) 13,190,554 ordinary shares held by Onex Camelot Co-Invest LP ("Onex Camelot"). ( 2 )Onex Corporation may be deemed to beneficially own the ordinary shares held by (a) each of Onex IV, Onex IV PV, Onex Camelot, Onex IV GP and Onex IV Select, through its ownership of all of the common stock of Onex Partners Canadian GP Inc., which owns all of the equity of (i) Onex Partners IV GP Limited, which is the general partner of Onex IV GP, which is the general partner of each of Onex IV, Onex IV PV and Onex Camelot; and (ii) Onex Partners IV GP LLC, which is the general partner of Onex IV Select; (b) Onex US, through its ownership of all of the equity of Onex Private Equity Holdings LLC, which owns all of the equity of Onex American Holdings GP LLC, the general partner of Onex US; and (c) Onex Holdings, through its ownership of all of the equity of Onex Private Equity Holdings LLC, which owns all of the equity of Onex American Holdings Subco LLC, which is the majority owner of Onex Holdings. ( 3 )New PCo GP Inc. is the general partner of New PCo and as such may be deemed to beneficially own the ordinary shares held by New PCo. Mr. Gerald W. Schwartz beneficially owns all of the shares held by Onex Corporation and indirectly controls New PCo GP Inc., and as such Mr. Schwartz may be deemed to share beneficial ownership of the shares beneficially owned by Onex Corporation and New PCo GP Inc.

Remarks: Due to the limitations of the SEC's electronic filing system, each of Onex Corporation, Onex Partners Canadian GP Inc., Onex Partners IV GP Limited, Onex Partners IV GP LP, Onex Partners IV LP, Onex Partners IV PV LP, Onex Camelot Co-Invest LP, Onex Partners IV GP LLC, Onex Partners IV Select LP and Onex American Holdings GP LLC are filing a separate Form 4.

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.
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