| 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  | 
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| 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*
 
 
 (Street) 
 
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2. Issuer Name and Ticker or Trading Symbol
       MultiPlan Corp [ MPLN ]  | 
5. Relationship of Reporting Person(s) to Issuer
       (Check all applicable) 
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3. Date of Earliest Transaction
         (Month/Day/Year) 10/08/2020  | ||||||||||||||||||||||||||
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4. If Amendment, Date of Original Filed
         (Month/Day/Year) | 
6. Individual or Joint/Group Filing (Check Applicable Line)
      
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| Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned | ||||||||||
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| 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 common stock | 10/08/2020 | A(1) | 112,593,413 | A | (1) | 112,593,413 | I | See Footnotes(2)(8) | ||
| Class A common stock | 10/08/2020 | A(1) | 50,532,114 | A | (1) | 50,532,114 | I | See Footnotes(3)(8) | ||
| Class A common stock | 10/08/2020 | A(1) | 9,549,505 | A | (1) | 9,549,505 | I | See Footnotes(4)(8) | ||
| Class A common stock | 10/08/2020 | A(1) | 2,953,631 | A | (1) | 2,953,631 | I | See Footnotes(5)(8) | ||
| Class A common stock | 10/08/2020 | A(1) | 496,709 | A | (1) | 496,709 | I | See Footnotes(6)(8) | ||
| Class A common stock | 10/08/2020 | A(1) | 37,677,074 | A | (1) | 37,677,074 | I | See Footnotes(7)(8) | ||
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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)  | |||||||||||||||
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| 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 | ||||||||
| Explanation of Responses: | 
| 1. Reflects shares of Class A common stock of the Issuer ("Common Stock") received pursuant to an Agreement and Plan of Merger, dated July 12, 2020 (the "Merger Agreement"), by and among the Issuer (formerly known as Churchill Capital Corp III), Polaris Parent Corp. ("MultiPlan Parent"), Polaris Investment Holdings, L.P., Music Merger Sub I, Inc. and Music Merger Sub II LLC, pursuant to which Music Merger Sub I, Inc. merged with MultiPlan Parent, with MultiPlan Parent surviving, and MultiPlan Parent merged with and into Music Merger Sub II LLC, with Music Merger Sub II LLC surviving the merger as a wholly owned subsidiary of the Issuer (which changed its name to MultiPlan Corporation). Pursuant to the Merger Agreement, former stockholders of MultiPlan Parent received their pro rata portion of the merger consideration, which was equal to $5,678,000,000, paid in a combination of $1,521,000,000 cash with the remainder paid in shares of Common Stock in an amount equal to $10.00 per share. | 
| 2. Reflects securities directly held by Hellman & Friedman Capital Partners VIII, L.P. ("HFCP VIII"). | 
| 3. Reflects securities directly held by Hellman & Friedman Capital Partners VIII (Parallel), L.P. ("HFCP VIII Parallel"). | 
| 4. Reflects securities directly held by HFCP VIII (Parallel-A), L.P. ("HFCP VIII Parallel-A"). | 
| 5. Reflects securities directly held by H&F Executives VIII, L.P. ("H&F VIII Executives"). | 
| 6. Reflects securities directly held by H&F Associates VIII, L.P. ("H&F VIII Associates", and together with HFCP VIII, HFCP VIII Parallel, HFCP VIII Parallel-A and H&F VIII Executives, the "H&F VIII Funds"). | 
| 7. Reflects securities directly held by H&F Polaris Partners, L.P. ("Polaris Partners"), the general partner of which is H&F Polaris Partners GP, LLC, the managing member of which is HFCP VIII. | 
| 8. Hellman & Friedman Investors VIII, L.P. ("H&F Investors VIII") is the general partner of each of the H&F VIII Funds. H&F Corporate Investors VIII, Ltd. ("H&F VIII") is the general partner of H&F Investors VIII. A three member board of directors of H&F VIII has investment discretion over the shares held by the H&F VIII Funds and Polaris Partners. Allen R. Thorpe, a member of the board of directors ofMultiPlan Corporation is a member of the board of directors of H&F VIII. | 
| Remarks: | 
| The Reporting Person states that this filing shall not be an admission that the Reporting Person is the beneficial owner of any of the securities reported herein, and the Reporting Person disclaims beneficial ownership of such securities except to the extent of such Reporting Person's pecuniary interest therein. | 
| ALLEN R. THORPE: /s/ Allen R. Thorpe | 10/13/2020 | |
| ** 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. | ||