X0306 4 2018-08-09 0001613859 PRA Health Sciences, Inc. PRAH 0001472698 KKR Fund Holdings L.P. C/O KOHLBERG KRAVIS ROBERTS & CO. L.P. 9 WEST 57TH STREET, SUITE 4200 NEW YORK NY 10019 true 0001472697 KKR Fund Holdings GP Ltd C/O KOHLBERG KRAVIS ROBERTS & CO. L.P. 9 WEST 57TH STREET, SUITE 4200 NEW YORK NY 10019 true 0001743754 KKR Group Holdings Corp. C/O KOHLBERG KRAVIS ROBERTS & CO. L.P. 9 WEST 57TH STREET, SUITE 4200 NEW YORK NY 10019 true 0001404912 KKR & Co. Inc. C/O KOHLBERG KRAVIS ROBERTS & CO. L.P. 9 WEST 57TH STREET, SUITE 4200 NEW YORK NY 10019 true 0001472694 KKR Management LLC C/O KOHLBERG KRAVIS ROBERTS & CO. L.P. 9 WEST 57TH STREET, SUITE 4200 NEW YORK NY 10019 true 0001081714 KRAVIS HENRY R C/O KOHLBERG KRAVIS ROBERTS & CO. L.P. 9 WEST 57TH STREET, SUITE 4200 NEW YORK NY 10019 true 0001081715 ROBERTS GEORGE R C/O KOHLBERG KRAVIS ROBERTS & CO. L.P. 2800 SAND HILL ROAD, SUITE 200 MENLO PARK CA 94025 true Common Stock 2018-08-09 4 S 0 6500000 101.01 D 6695984 I See Footnotes This amount represents the secondary public offering price per share of common stock of PRA Health Sciences, Inc., less the underwriting discount of $0.49 per share. Securities are held by KKR PRA Investors L.P. KKR PRA Investors GP II LLC is the sole general partner of KKR PRA Investors L.P. KKR PRA Investors GP LLC is the sole member of KKR PRA Investors GP II LLC. 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. Each of the Reporting Persons (other than KKR PRA Investors L.P.), disclaims beneficial ownership of the securities reported herein except to the extent of such Reporting Person's pecuniary interest therein, and, pursuant to Rule 16a-1(a)(4) under the Securities Exchange Act of 1934, each of the Reporting Persons (other than KKR PRA Investors L.P.) states that the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of all of the reported securities for purposes of Section 16 or for any other purpose. Because no more than 10 reporting persons can file any one Form 4 through the Securities and Exchange Commission's EDGAR system, KKR PRA Investors L.P., KKR PRA Investors GP II LLC, KKR PRA Investors GP LLC, KKR North America Fund XI L.P., KKR Associates North America XI L.P. and KKR North America XI Limited have filed a separate Form 4. KKR FUND HOLDINGS L.P. By: KKR Group Holdings Corp., a general partner, By: /s/ Terence P. Gallagher Name: Terence P. Gallagher Title: Attorney-in-fact for William J. Janetschek, Chief Financial Officer 2018-08-13 KKR FUND HOLDINGS GP LIMITED By: /s/ Terence P. Gallagher Name: Terence P. Gallagher Title: Attorney-in-fact for William J. Janetschek, Director 2018-08-13 KKR GROUP HOLDINGS CORP. By: /s/ Terence P. Gallagher Name: Terence P. Gallagher Title: Attorney-in-fact for William J. Janetschek, Chief Financial Officer 2018-08-13 KKR & CO. INC. By: /s/ Terence P. Gallagher Name: Terence P. Gallagher Title: Attorney-in-fact for William J. Janetschek, Chief Financial Officer 2018-08-13 KKR MANAGEMENT LLC By: /s/ Terence P. Gallagher Name: Terence P. Gallagher Title: Attorney-in-fact for William J. Janetschek, Chief Financial Officer 2018-08-13 HENRY R. KRAVIS By: /s/ Terence P. Gallagher Name: Terence P. Gallagher Title: Attorney-in-fact 2018-08-13 GEORGE R. ROBERTS By: /s/ Terence P. Gallagher Name: Terence P. Gallagher Title: Attorney-in-fact 2018-08-13