Initial Statement of Beneficial Ownership (3)

FORM 3	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES	OMB APPROVAL OMB Number: 3235-0104 Estimated average burden hours per response... 0.5
	Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940

1. Name and Address of Reporting Person ^*

Bonello Michael J.

2. Date of Event Requiring Statement (MM/DD/YYYY) 5/1/2018

3. Issuer Name and Ticker or Trading Symbol

PRA Health Sciences, Inc. [PRAH]

(Last) (First) (Middle)

C/O PRA HEALTH SCIENCES, INC., 4130 PARKLAKE AVENUE, SUITE 400

4. Relationship of Reporting Person(s) to Issuer (Check all applicable)

_____ Director _____ 10% Owner
___ X ___ Officer (give title below) _____ Other (specify below)
Exec VP & CFO /

(Street)

RALEIGH, NC 27612

(City) (State) (Zip)

5. If Amendment, Date Original Filed (MM/DD/YYYY)

6. Individual or Joint/Group Filing (Check Applicable Line)

_ X _ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person

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	18000 ⁽¹⁾	D

*Table II - Derivative Securities Beneficially Owned ( e.g.* , puts, calls, warrants, options, convertible securities)**
1. Title of Derivate Security (Instr. 4)	2. Date Exercisable and Expiration Date (MM/DD/YYYY)		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)
1. Title of Derivate Security (Instr. 4)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	4. Conversion or Exercise Price of Derivative Security		6. Nature of Indirect Beneficial Ownership (Instr. 5)
Stock Option (Right to Buy)	⁽²⁾	12/20/2023	Common Stock	20736	$11.73	D
Stock Option (Right to Buy)	⁽³⁾	12/20/2023	Common Stock	12636	$11.73	D
Stock Option (Right to Buy)	⁽⁴⁾	8/29/2027	Common Stock	20000	$75.81	D
Stock Option (Right to Buy)	⁽⁵⁾	4/26/2028	Common Stock	80000	$81.61	D

Explanation of Responses:
(1)	Represents shares of restricted stock granted on April 26, 2018 under the issuer's 2014 Omnibus Incentive Plan (the "2014 Plan"), of which two-thirds will vest on the second anniversary of the grant date and the remaining one-third will vest on the third anniversary of the grant date, subject to the holder's continued service through such dates.
(2)	The options were granted on December 20, 2013 under the issuer's 2013 Stock Incentive Plan (the "2013 Plan"). 3,681 options vested on September 23, 2016, 8,527 options vested on September 23, 2017, and the remaining 8,528 options will vest on September 23, 2018, subject to the holder's continued service through such date.
(3)	The options were granted on December 20, 2013 under the 2013 Plan. The options vested on November 16, 2016, based on the achievement of specified performance targets.
(4)	The options were granted on August 29, 2017 under the 2014 Plan and vest as follows: (a) 20% on each of August 29, 2018 and August 29, 2019 and (b) 30% on each of August 29, 2020 and August 29, 2021, subject to the holder's continued service through such dates.
(5)	The options were granted on April 26, 2018 under the 2014 Plan and vest 25% each year starting on the first anniversary of the grant date, subject to the holder's continued service through such dates.

Remarks:
Exhibit 24.1 - Power of Attorney

Reporting Owners
Reporting Owner Name / Address	Relationships
Reporting Owner Name / Address	Director	10% Owner	Officer	Other
Bonello Michael J. C/O PRA HEALTH SCIENCES, INC. 4130 PARKLAKE AVENUE, SUITE 400 RALEIGH, NC 27612			Exec VP & CFO

Signatures
/s/ Timothy J. McClain, by power of attorney		5/1/2018
^** 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 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).
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 control number.