Filing Details

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

o

Rule 13d-1(b)

o

Rule 13d-1(c)

x

Rule 13d-1(d)

CUSIP No. 69354M108

13G

1.

Name of Reporting Person
KKR PRA Investors L.P.

2.

Check the Appropriate Box if a Member of a Group (See Instructions)

(a)

o

(b)

o

3.

SEC Use Only

4.

Citizenship or Place of Organization
Delaware

Number of
Shares
Beneficially
Owned by
Each
Reporting
Person With

5.

Sole Voting Power
22,695,984

6.

Shared Voting Power
0

7.

Sole Dispositive Power
22,695,984

8.

Shared Dispositive Power
0

9.

Aggregate Amount Beneficially Owned by Each Reporting Person
22,695,984

10.

Check Box if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions)  o

11.

Percent of Class Represented by Amount in Row (9)
37.0%

12.

Type of Reporting Person (See Instructions)
PN

CUSIP No. 69354M108

13G

1.

Name of Reporting Person
KKR PRA Investors GP II LLC

2.

Check the Appropriate Box if a Member of a Group (See Instructions)

(a)

o

(b)

o

3.

SEC Use Only

4.

Citizenship or Place of Organization
Delaware

Number of
Shares
Beneficially
Owned by
Each
Reporting
Person With

5.

Sole Voting Power
22,695,984

6.

Shared Voting Power
0

7.

Sole Dispositive Power
22,695,984

8.

Shared Dispositive Power
0

9.

Aggregate Amount Beneficially Owned by Each Reporting Person
22,695,984

10.

Check Box if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions)  o

11.

Percent of Class Represented by Amount in Row (9)
37.0%

12.

Type of Reporting Person (See Instructions)
OO

CUSIP No. 69354M108

13G

1.

Name of Reporting Person
KKR PRA Investors GP LLC

2.

Check the Appropriate Box if a Member of a Group (See Instructions)

(a)

o

(b)

o

3.

SEC Use Only

4.

Citizenship or Place of Organization
Delaware

Number of
Shares
Beneficially
Owned by
Each
Reporting
Person With

5.

Sole Voting Power
22,695,984

6.

Shared Voting Power
0

7.

Sole Dispositive Power
22,695,984

8.

Shared Dispositive Power
0

9.

Aggregate Amount Beneficially Owned by Each Reporting Person
22,695,984

10.

Check Box if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions)  o

11.

Percent of Class Represented by Amount in Row (9)
37.0%

12.

Type of Reporting Person (See Instructions)
OO

CUSIP No. 69354M108

13G

1.

Name of Reporting Person
KKR North America Fund XI L.P.

2.

Check the Appropriate Box if a Member of a Group (See Instructions)

(a)

o

(b)

o

3.

SEC Use Only

4.

Citizenship or Place of Organization
Cayman Islands

Number of
Shares
Beneficially
Owned by
Each
Reporting
Person With

5.

Sole Voting Power
22,695,984

6.

Shared Voting Power
0

7.

Sole Dispositive Power
22,695,984

8.

Shared Dispositive Power
0

9.

Aggregate Amount Beneficially Owned by Each Reporting Person
22,695,984

10.

Check Box if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions)  o

11.

Percent of Class Represented by Amount in Row (9)
37.0%

12.

Type of Reporting Person (See Instructions)
PN

CUSIP No. 69354M108

13G

1.

Name of Reporting Person
KKR Associates North America XI L.P.

2.

Check the Appropriate Box if a Member of a Group (See Instructions)

(a)

o

(b)

o

3.

SEC Use Only

4.

Citizenship or Place of Organization
Cayman Islands

Number of
Shares
Beneficially
Owned by
Each
Reporting
Person With

5.

Sole Voting Power
22,695,984

6.

Shared Voting Power
0

7.

Sole Dispositive Power
22,695,984

8.

Shared Dispositive Power
0

9.

Aggregate Amount Beneficially Owned by Each Reporting Person
22,695,984

10.

Check Box if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions)  o

11.

Percent of Class Represented by Amount in Row (9)
37.0%

12.

Type of Reporting Person (See Instructions)
PN

CUSIP No. 69354M108

13G

1.

Name of Reporting Person
KKR North America XI Limited

2.

Check the Appropriate Box if a Member of a Group (See Instructions)

(a)

o

(b)

o

3.

SEC Use Only

4.

Citizenship or Place of Organization
Cayman Islands

Number of
Shares
Beneficially
Owned by
Each
Reporting
Person With

5.

Sole Voting Power
22,695,984

6.

Shared Voting Power
0

7.

Sole Dispositive Power
22,695,984

8.

Shared Dispositive Power
0

9.

Aggregate Amount Beneficially Owned by Each Reporting Person
22,695,984

10.

Check Box if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions)  o

11.

Percent of Class Represented by Amount in Row (9)
37.0%

12.

Type of Reporting Person (See Instructions)
OO

CUSIP No. 69354M108

13G

1.

Name of Reporting Person
KKR Fund Holdings L.P.

2.

Check the Appropriate Box if a Member of a Group

(a)

o

(b)

o

3.

SEC Use Only

4.

Citizenship or Place of Organization
Cayman Islands

Number of
Shares
Beneficially
Owned by
Each
Reporting
Person With

5.

Sole Voting Power
22,695,984

6.

Shared Voting Power
0

7.

Sole Dispositive Power
22,695,984

8.

Shared Dispositive Power
0

9.

Aggregate Amount Beneficially Owned by Each Reporting Person
22,695,984

10.

Check Box if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions)  o

11.

Percent of Class Represented by Amount in Row (9)
37.0%

12.

Type of Reporting Person (See Instructions)
PN

CUSIP No. 69354M108

13G

1.

Name of Reporting Person
KKR Fund Holdings GP Limited

2.

Check the Appropriate Box if a Member of a Group (See Instructions)

(a)

o

(b)

o

3.

SEC Use Only

4.

Citizenship or Place of Organization
Cayman Islands

Number of
Shares
Beneficially
Owned by
Each
Reporting
Person With

5.

Sole Voting Power
22,695,984

6.

Shared Voting Power
0

7.

Sole Dispositive Power
22,695,984

8.

Shared Dispositive Power
0

9.

Aggregate Amount Beneficially Owned by Each Reporting Person
22,695,984

10.

Check Box if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions)  o

11.

Percent of Class Represented by Amount in Row (9)
37.0%

12.

Type of Reporting Person (See Instructions)
OO

CUSIP No. 69354M108

13G

1.

Name of Reporting Person
KKR Group Holdings L.P.

2.

Check the Appropriate Box if a Member of a Group

(a)

o

(b)

o

3.

SEC Use Only

4.

Citizenship or Place of Organization
Cayman Islands

Number of
Shares
Beneficially
Owned by
Each
Reporting
Person With

5.

Sole Voting Power
22,695,984

6.

Shared Voting Power
0

7.

Sole Dispositive Power
22,695,984

8.

Shared Dispositive Power
0

9.

Aggregate Amount Beneficially Owned by Each Reporting Person
22,695,984

10.

Check Box if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions)  o

11.

Percent of Class Represented by Amount in Row (9)
37.0%

12.

Type of Reporting Person (See Instructions)
PN

CUSIP No. 69354M108

13G

1.

Name of Reporting Person
KKR Group Limited

2.

Check the Appropriate Box if a Member of a Group (See Instructions)

(a)

o

(b)

o

3.

SEC Use Only

4.

Citizenship or Place of Organization
Cayman Islands

Number of
Shares
Beneficially
Owned by
Each
Reporting
Person With

5.

Sole Voting Power
22,695,984

6.

Shared Voting Power
0

7.

Sole Dispositive Power
22,695,984

8.

Shared Dispositive Power
0

9.

Aggregate Amount Beneficially Owned by Each Reporting Person
22,695,984

10.

Check Box if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions)  o

11.

Percent of Class Represented by Amount in Row (9)
37.0%

12.

Type of Reporting Person (See Instructions)
OO

CUSIP No. 69354M108

13G

1.

Name of Reporting Person
KKR & Co. L.P.

2.

Check the Appropriate Box if a Member of a Group

(a)

o

(b)

o

3.

SEC Use Only

4.

Citizenship or Place of Organization
Delaware

Number of
Shares
Beneficially
Owned by
Each
Reporting
Person With

5.

Sole Voting Power
22,695,984

6.

Shared Voting Power
0

7.

Sole Dispositive Power
22,695,984

8.

Shared Dispositive Power
0

9.

Aggregate Amount Beneficially Owned by Each Reporting Person
22,695,984

10.

Check Box if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions)  o

11.

Percent of Class Represented by Amount in Row (9)
37.0%

12.

Type of Reporting Person (See Instructions)
PN

CUSIP No. 69354M108

13G

1.

Name of Reporting Person
KKR Management LLC

2.

Check the Appropriate Box if a Member of a Group (See Instructions)

(a)

o

(b)

o

3.

SEC Use Only

4.

Citizenship or Place of Organization
Delaware

Number of
Shares
Beneficially
Owned by
Each
Reporting
Person With

5.

Sole Voting Power
22,695,984

6.

Shared Voting Power
0

7.

Sole Dispositive Power
22,695,984

8.

Shared Dispositive Power
0

9.

Aggregate Amount Beneficially Owned by Each Reporting Person
22,695,984

10.

Check Box if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions)  o

11.

Percent of Class Represented by Amount in Row (9)
37.0%

12.

Type of Reporting Person (See Instructions)
OO

CUSIP No. 69354M108

13G

1.

Name of Reporting Person
Henry R. Kravis

2.

Check the Appropriate Box if a Member of a Group

(a)

o

(b)

o

3.

SEC Use Only

4.

Citizenship or Place of Organization
United States

Number of
Shares
Beneficially
Owned by
Each
Reporting
Person With

5.

Sole Voting Power
0

6.

Shared Voting Power
22,695,984

7.

Sole Dispositive Power
0

8.

Shared Dispositive Power
22,695,984

9.

Aggregate Amount Beneficially Owned by Each Reporting Person
22,695,984

10.

Check Box if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions)  o

11.

Percent of Class Represented by Amount in Row (9)
37.0%

12.

Type of Reporting Person (See Instructions)
IN

CUSIP No. 69354M108

13G

1.

Name of Reporting Person
George R. Roberts

2.

Check the Appropriate Box if a Member of a Group

(a)

o

(b)

o

3.

SEC Use Only

4.

Citizenship or Place of Organization
United States

Number of
Shares
Beneficially
Owned by
Each
Reporting
Person With

5.

Sole Voting Power
0

6.

Shared Voting Power
22,695,984

7.

Sole Dispositive Power
0

8.

Shared Dispositive Power
22,695,984

9.

Aggregate Amount Beneficially Owned by Each Reporting Person
22,695,984

10.

Check Box if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions)  o

11.

Percent of Class Represented by Amount in Row (9)
37.0%

12.

Type of Reporting Person (See Instructions)
IN

Item 1.

(a)

Name of Issuer:
PRA Health Sciences, Inc.

(b)

Address of Issuers Principal Executive Offices:
4130 ParkLake Avenue, Suite 400, Raleigh, North Carolina  27612

Item 2.

(a)

Name of Person Filing:
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.

KKR North America XI Limited

KKR Fund Holdings L.P.

KKR Fund Holdings GP Limited

KKR Group Holdings L.P.

KKR Group Limited

KKR & Co. L.P.

KKR Management LLC

Henry R. Kravis

George R. Roberts

(b)

Address of Principal Business Office, or, if none, Residence:
The principal business office for all persons filing (other than George R. Roberts) is:

c/o Kohlberg Kravis Roberts & Co. L.P.

9 West 57th Street, Suite 4200

New York, NY 10019

The principal business office for George R. Roberts is:

c/o Kohlberg Kravis Roberts & Co. L.P.

2800 Sand Hill Road, Suite 200

Menlo Park, CA 94025

(c)

Citizenship:
See Item 4 of each cover page.

(d)

Title of Class of Securities:
Common stock, par value $0.01 per share.

(e)

CUSIP Number:
69354M108

Item 3.

Not applicable.

Item 4.

Ownership.

(a)

Amount beneficially owned:

KKR PRA Investors L.P. holds 22,695,984 shares of Common Stock, or 37.0% of the outstanding shares of Common Stock based on 61,408,892 shares of Common Stock outstanding as of November 8, 2016, as reported in the Issuers prospectus supplement dated November 10, 2016, filed with the Securities and Exchange Commission on November 15, 2016.

Each of KKR PRA Investors GP II LLC (KKR PRA GP II) (as the general partner of KKR PRA Investors L.P.), KKR PRA Investors GP LLC (KKR PRA GP) (as the sole member of KKR PRA GP II), KKR North America Fund XI L.P. (KKR North America XI) (as the sole member of KKR PRA GP), KKR Associates North America XI L.P. (KKR Associates North America) (as the general partner of KKR North America XI), KKR North America XI Limited (KKR North America Limited) (as the general partner of KKR Associates North America), KKR Fund Holdings L.P. (KKR Fund Holdings) (as the sole shareholder of KKR North America Limited); KKR Fund Holdings GP Limited (KKR Fund Holdings GP) (as a general partner of KKR Fund Holdings); KKR Group Holdings L.P. (KKR Group Holdings) (as the sole shareholder of KKR Fund Holdings GP and a general partner of KKR Fund Holdings); KKR Group Limited (KKR Group) (as the general partner of KKR Group Holdings); KKR & Co. L.P. (KKR & Co.) (as the sole shareholder of KKR Group); and KKR Management LLC (KKR Management) (as the general partner of KKR & Co.) may also be deemed to be the beneficial owner of the securities held by KKR PRA Investors L.P.

KKR PRA GP II, KKR PRA GP, KKR North America XI, KKR Associates North America, KKR North America Limited, KKR Fund Holdings, KKR Fund Holdings GP, KKR Group Holdings, KKR Group, KKR & Co. and KKR Management disclaim beneficial ownership of such securities.

As the designated members of KKR Management, Messrs. Henry R. Kravis and George R. Roberts may be deemed to be the beneficial owner of the securities held by KKR PRA Investors L.P. but disclaim beneficial ownership of such securities.

(b)

Percent of class:

See Item 4(a) above.

(c)

Number of shares as to which the person has:

(i)

Sole power to vote or to direct the vote

See Item 5 of each cover page.

(ii)

Shared power to vote or to direct the vote

See Item 6 of each cover page.

(iii)

Sole power to dispose or to direct the disposition of

See Item 7 of each cover page.

(iv)

Shared power to dispose or to direct the disposition of

See Item 8 of each cover page.

Item 5.

Ownership of Five Percent or Less of a Class.

Not applicable.

Item 6.

Ownership of More than Five Percent on Behalf of Another Person.

See Item 4 above. To the best knowledge of the Reporting Persons, no one other than the Reporting Persons, the persons named in Item 4 above and the partners, members, affiliates and shareholders of the Reporting Persons and of the other persons named in Item 4 above has the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, shares of Common Stock.

Item 7.

Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on By the Parent Holding Company or Control Person.

Not applicable.

Item 8.

Identification and Classification of Members of the Group.

Not applicable.

Item 9.

Notice of Dissolution of Group.

Not applicable.

Item 10.

Certifications.

Not applicable.

KKR PRA INVESTORS L.P.

By: KKR PRA Investors GP II LLC, its general partner

By:

/s/ Terence Gallagher

Name:

Terence Gallagher

Title:

Attorney-in-fact for William J. Janetschek,
Vice President

KKR PRA INVESTORS GP II LLC

By:

/s/ Terence Gallagher

Name:

Terence Gallagher

Title:

Attorney-in-fact for William J. Janetschek,
Vice President

KKR PRA INVESTORS GP LLC

By:

/s/ Terence Gallagher

Name:

Terence Gallagher

Title:

Attorney-in-fact for William J. Janetschek,
Vice President

KKR NORTH AMERICA FUND XI L.P.

By: KKR Associates North America XI L.P., its general partner

By: KKR North America XI Limited, its general partner

By:

/s/ Terence Gallagher

Name:

Terence Gallagher

Title:

Attorney-in-fact for William J. Janetschek,
Director

KKR ASSOCIATES NORTH AMERICA XI L.P.

By: KKR North America XI Limited, its general partner

By:

/s/ Terence Gallagher

Name:

Terence Gallagher

Title:

Attorney-in-fact for William J. Janetschek,
Director

KKR NORTH AMERICA XI LIMITED

By:

/s/ Terence Gallagher

Name:

Terence Gallagher

Title:

Attorney-in-fact for William J. Janetschek,
Director

KKR FUND HOLDINGS L.P.

By: KKR Group Holdings L.P., a general partner

By: KKR Group Limited, its general partner

By:

/s/ Terence Gallagher

Name:

Terence Gallagher

Title:

Attorney-in-fact for William J. Janetschek,
Director

KKR FUND HOLDINGS GP LIMITED

By:

/s/ Terence Gallagher

Name:

Terence Gallagher

Title:

Attorney-in-fact for William J. Janetschek,
Director

KKR GROUP HOLDINGS L.P.

By: KKR Group Limited, its general partner

By:

/s/ Terence Gallagher

Name:

Terence Gallagher

Title:

Attorney-in-fact for William J. Janetschek,
Director

KKR GROUP LIMITED

By:

/s/ Terence Gallagher

Name:

Terence Gallagher

Title:

Attorney-in-fact for William J. Janetschek,
Director

KKR & CO. L.P.

By: KKR Management LLC, its general partner

By:

/s/ Terence Gallagher

Name:

Terence Gallagher

Title:

Attorney-in-fact for William J. Janetschek,
Chief Financial Officer

KKR MANAGEMENT LLC

By:

/s/ Terence Gallagher

Name:

Terence Gallagher

Title:

Attorney-in-fact for William J. Janetschek,
Chief Financial Officer

HENRY R. KRAVIS

By:

/s/ Terence Gallagher

Name:

Terence Gallagher

Title:

Attorney-in-fact

GEORGE R. ROBERTS

By:

/s/ Terence Gallagher

Name:

Terence Gallagher

Title:

Attorney-in-fact

Exhibit
Number

Title

1

Joint Filing Agreement, dated as of March 6, 2015, as required by Rule 13d-1(k)(1) under the Securities Exchange Act of 1934, as amended (previously filed with Amendment Number 1 to the Original Schedule 13G filed on March 6, 2015 and incorporated herein by reference)

2

Powers of Attorney (previously filed with the Original Schedule 13G filed on March 6, 2015 and incorporated herein by reference)