Ownership Submission
FORM 4
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN 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 *
Gaenzle Christopher L
   2. Issuer Name and Ticker or Trading Symbol
INC Research Holdings, Inc. [INCR] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
CAO, GC & Sec
(Last)
(First)
(Middle)
C/O INC RESEARCH HOLDINGS, INC., 3201 BEECHLEAF COURT, SUITE 600		 3. Date of Earliest Transaction (Month/Day/Year)
07/11/2016
(Street)

RALEIGH, NC 27604		 4. If Amendment, Date Original Filed(Month/Day/Year)
 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 Acquired, Disposed of, or Beneficially Owned
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 07/11/2016   M(1)   17,795 A $ 16.06 33,530 D  
Class A Common Stock 07/11/2016   S(1)   17,795 D $ 40.1914 (2) 15,735 D  
Class A Common Stock 07/11/2016   M(1)   2,906 A $ 10.57 18,641 D  
Class A Common Stock 07/11/2016   S(1)   2,906 D $ 40.253 (3) 15,735 D  
Class A Common Stock 07/11/2016   S(1)   1,217 D $ 40.177 (4) 14,518 D  

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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
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 Underlying Securities
(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 of Derivative Security: 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
Stock Option (Right to Buy Class A Common Stock) $ 16.06 07/11/2016   M(1)     17,795   (5) 06/30/2024 Class A Common Stock 17,795 $ 0 35,502 D  
Stock Option (Right to Buy Class A Common Stock) $ 10.57 07/11/2016   M(1)     2,906   (6) 04/02/2022 Class A Common Stock 2,906 $ 0 14,199 D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
Gaenzle Christopher L
C/O INC RESEARCH HOLDINGS, INC.
3201 BEECHLEAF COURT, SUITE 600
RALEIGH, NC 27604		       CAO, GC & Sec  

Signatures

 /s/ Christopher L. Gaenzle   07/12/2016
**Signature of Reporting Person Date

Explanation of Responses:

* 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).
(1) The transactions reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on May 4, 2016.
(2) The price reported in column 4 is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $40.00 to $40.37, inclusive. The reporting person will provide to INC Research Holdings, Inc. (the "Issuer"), any security holder of the Issuer, or the SEC staff, upon request, information regarding the number of shares sold at each price within the range.
(3) The price reported in column 4 is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $40.00 to $40.41, inclusive. The reporting person will provide to the Issuer, any security holder of the Issuer, or the SEC staff, upon request, information regarding the number of shares sold at each price within the range.
(4) The price reported in column 4 is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $40.00 to $40.36, inclusive. The reporting person will provide to the Issuer, any security holder of the Issuer, or the SEC staff, upon request, information regarding the number of shares sold at each price within the range.
(5) One half of the shares subject to this option vest yearly in five equal installments beginning on June 30, 2015, subject to continued employment. The other half of the shares subject to this option vest yearly in five equal installments beginning on December 31, 2014, subject to continued employment.
(6) One half of the shares subject to this option vest yearly in five equal installments beginning on April 2, 2013, subject to continued employment. The other half of the shares subject to this option vest yearly in five equal installments beginning on December 31, 2013, subject to continued employment.

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