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 *
  Bell Michael Adam
 2. Date of Event Requiring Statement (Month/Day/Year)
08/01/2017		 3. Issuer Name and Ticker or Trading Symbol
INC Research Holdings, Inc. [INCR]
(Last)
(First)
(Middle)
C/O INC RESEARCH HOLDINGS, INC., 3201 BEECHLEAF COURT, SUITE 600		 4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
__X__ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
Exec Chair & Pres, Comm Div
 5. If Amendment, Date Original Filed(Month/Day/Year)
(Street)

RALEIGH, NC 27604		 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)
Class A Common Stock 126,138 (1)
D
 

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
Stock Option (Right to Buy Class A Common Stock) 08/01/2017 11/15/2026 Class A Common Stock, par value $0.01 per share 321,736 (2) $ 28.63 D  

Reporting Owners

Reporting Owner Name / Address Relationships
Director 10% Owner Officer Other
Bell Michael Adam
C/O INC RESEARCH HOLDINGS, INC.
3201 BEECHLEAF COURT, SUITE 600
RALEIGH, NC 27604		   X     Exec Chair & Pres, Comm Div  

Signatures

/s/ Christopher L. Gaenzle, Attorney-in-Fact 08/03/2017
**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) Reflects Class A Common Stock, par value $0.01 ("Common Stock"), of INC Research Holdings, Inc. (the "Issuer") received at the effective time of the merger (the "Merger") of Double Eagle Parent, Inc. ("Double Eagle") with and into the Issuer pursuant to the Agreement and Plan of Merger, dated as of May 10, 2017 (the "Merger Agreement"), by and between Double Eagle and the Issuer, in connection with the Reporting Person's ownership prior to the Merger of common stock of Double Eagle and restricted stock units of Double Eagle (which were converted to Common Stock pursuant to the terms of the Merger Agreement).
(2) Represents options to purchase Common Shares, which were converted from options held by the reporting person immediately preceding the Merger and previously exercisable on a one-to-one basis for shares of Double Eagle common stock, based upon a conversion formula tied to the Per Share Consideration pursuant to the Merger Agreement.

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