Ownership Submission
FORM 3
 UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

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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(Print or Type Responses)
1. Name and Address of Reporting Person *
  KKR Group Holdings Corp.
 2. Date of Event Requiring Statement (Month/Day/Year)
07/01/2018		 3. Issuer Name and Ticker or Trading Symbol
PRA Health Sciences, Inc. [PRAH]
(Last)
(First)
(Middle)
C/O KOHLBERG KRAVIS ROBERTS & CO. L.P., 9 WEST 57TH STREET, SUITE 4200		 4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director _____ 10% Owner
_____ Officer (give title below) _____ Other (specify below)
5. If Amendment, Date Original Filed(Month/Day/Year)
(Street)

NEW YORK, NY 10019		 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 Beneficially Owned
1.Title of Security
(Instr. 4)		 2. Amount of Securities Beneficially Owned
(Instr. 4)		 3. Ownership Form: Direct (D) or Indirect (I)
(Instr. 5)		 4. Nature of Indirect Beneficial Ownership
(Instr. 5)
Common Stock 13,195,984
I
See Footnotes (1) (2) (3)

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly. SEC 1473 (7-02)
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Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 4)		 2. Date Exercisable and Expiration Date
(Month/Day/Year)		 3. Title and Amount of Securities Underlying Derivative Security
(Instr. 4)		 4. Conversion or Exercise Price of Derivative Security 5. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 5)		 6. Nature of Indirect Beneficial Ownership
(Instr. 5)
Date Exercisable Expiration Date Title Amount or Number of Shares

Reporting Owners

Reporting Owner Name / Address Relationships
Director 10% Owner Officer Other
KKR Group Holdings Corp.
C/O KOHLBERG KRAVIS ROBERTS & CO. L.P.
9 WEST 57TH STREET, SUITE 4200
NEW YORK, NY 10019		        

Signatures

KKR GROUP HOLDINGS CORP. By: /s/ Terence Gallagher Name: Terence Gallagher Title: Attorney-in-fact for William J. Janetschek, Chief Financial Officer 07/02/2018
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 5(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).
(1) Pursuant to an internal reorganization in connection with the conversion of KKR & Co. L.P., a Delaware limited partnership, into a Delaware corporation named KKR & Co. Inc., which became effective on July 1, 2018, KKR & Co. L.P. contributed all of its interests in two wholly-owned subsidiaries, KKR Group Holdings L.P. and KKR Group Limited, to a newly formed and wholly-owned subsidiary, KKR Group Holdings Corp., and KKR Group Holdings L.P. and KKR Group Limited were liquidated. KKR Group Holdings Corp. is now a general partner of KKR Fund Holdings L.P. and the sole shareholder of KKR Fund Holdings GP Limited and may be deemed to be the beneficial owner of the securities reported herein. Each of KKR Group Holdings L.P. and KKR Group Limited are separately filing an "exit" Form 4 to reflect the above. This internal reorganization did not involve any purchase or sale of securities of PRA Health Sciences, Inc.
(2) Securities are held by KKR PRA Investors L.P. KKR PRA Investors GP LLC is the sole general partner of KKR PRA Investors L.P. KKR North America Fund XI L.P. is the sole member of KKR PRA Investors GP LLC. KKR Associates North America XI L.P. is the general partner of KKR North America Fund XI L.P. KKR North America XI Limited is the general partner of KKR Associates North America XI L.P. KKR Fund Holdings L.P. is the sole shareholder of KKR North America XI Limited. KKR Fund Holdings GP Limited is a general partner of KKR Fund Holdings L.P. KKR Group Holdings Corp. is a general partner of KKR Fund Holdings L.P. and the sole shareholder of KKR Fund Holdings GP Limited. KKR & Co. Inc. is the sole shareholder of KKR Group Holdings Corp. KKR Management LLC is the controlling shareholder of KKR & Co. Inc. Messrs. Henry R. Kravis and George R. Roberts are the designated members of KKR Management LLC.
(3) The Reporting Person may be deemed to be the beneficial owner of all or a portion of the securities reported herein. The filing of this statement shall not be deemed to be an admission that, for purposes of Section 16 of the Securities Exchange Act of 1934, as amended (the "Exchange Act") or otherwise, the Reporting Person is the beneficial owner of any securities reported herein, and the Reporting Person disclaims beneficial ownership of such securities except to the extent of its pecuniary interest therein.
 
Remarks:
The acquisition of beneficial ownership is exempt from Section 16 of the Exchange Act, pursuant to Section 16(b) of the Exchange Act and Rule 16a-2(c) thereunder.  Exhibit List: Exhibit 24 - Power of Attorney.

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