SEC Form 3

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 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person* ADVENT INTERNATIONAL CORP/MA (Last) (First) (Middle) C/O ADVENT INTERNATIONAL CORPORATION 75 STATE STREET (Street) BOSTON MA 02109 (City) (State) (Zip)	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 ]
		4. Relationship of Reporting Person(s) to Issuer (Check all applicable) Director X 10% Owner Officer (give title below) Other (specify below)	5. If Amendment, Date of Original Filed (Month/Day/Year)
			6. Individual or Joint/Group Filing (Check Applicable Line) Form filed by One Reporting Person X 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)
Class A Common Stock	22,413,317	I	See Footnotes(1)(2)(3)

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: 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

1. Name and Address of Reporting Person* ADVENT INTERNATIONAL CORP/MA (Last) (First) (Middle) C/O ADVENT INTERNATIONAL CORPORATION 75 STATE STREET (Street) BOSTON MA 02109 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* Advent Partners GPE VII Limited Partnership (Last) (First) (Middle) C/O ADVENT INTERNATIONAL CORPORATION 75 STATE STREET (Street) BOSTON MA 02109 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* Advent Partners GPE VII 2014 Limited Partnership (Last) (First) (Middle) C/O ADVENT INTERNATIONAL CORPORATION 75 STATE STREET (Street) BOSTON MA 02109 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* Advent Partners GPE VII-A Limited Partnership (Last) (First) (Middle) C/O ADVENT INTERNATIONAL CORPORATION 75 STATE STREET (Street) BOSTON MA 02109 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* Advent Partners GPE VII-A 2014 Limited Partnership (Last) (First) (Middle) C/O ADVENT INTERNATIONAL CORPORATION 75 STATE STREET (Street) BOSTON MA 02109 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* Advent Partners GPE VII Cayman Limited Partnership (Last) (First) (Middle) C/O ADVENT INTERNATIONAL CORPORATION 75 STATE STREET (Street) BOSTON MA 02109 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* Advent Partners GPE VII 2014 Cayman Limited Partnership (Last) (First) (Middle) C/O ADVENT INTERNATIONAL CORPORATION 75 STATE STREET (Street) BOSTON MA 02109 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* Advent Partners GPE VII-A Cayman Limited Partnership (Last) (First) (Middle) C/O ADVENT INTERNATIONAL CORPORATION 75 STATE STREET (Street) BOSTON MA 02109 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* Advent Partners GPE VII-B Cayman Limited Partnership (Last) (First) (Middle) C/O ADVENT INTERNATIONAL CORPORATION 75 STATE STREET (Street) BOSTON MA 02109 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* Advent Partners GPE VII-A 2014 Cayman Limited Partnership (Last) (First) (Middle) C/O ADVENT INTERNATIONAL CORPORATION 75 STATE STREET (Street) BOSTON MA 02109 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

Explanation of Responses:

1. See Exhibit 99.1 for text of footnote (1)

2. See Exhibit 99.1 for text of footnote (2)

3. See Exhibit 99.1 for text of footnote (3)

Remarks:

Exhibit 99.1 and Exhibit 99.2 (Joint Filer Information) are incorporated herein by reference. This Form 3 is the third of six Forms 3 being filed relating to the same event. The Form 3 has been split into six filings because there are more than 10 Reporting Persons in total, and the SEC's EDGAR filing system limits a single Form 3 to a maximum of 10 Reporting Persons. Each Form 3 will be filed by Designated Filer Advent International Corporation.

	Advent International Corporation, Name: /s/ Michael Ristaino, Title: Vice President of Finance - Fund Administration	08/11/2017
	** 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).
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