Exhibit 99.2

Joint Filer Information

Name of Joint Filer:	AP GPE VIII GP Limited Partnership

Address of Joint Filer:	c/o Advent International Corporation
	75 State Street
	Boston, MA 02109

Relationship of Joint Filer to Issuer:	10% Owner

Issuer Name and Ticker or Trading Symbol:	INC Research Holdings, Inc. [INCR]

Date of Event Requiring
Statement (Month/Day/Year):	August 1, 2017

Designated Filer:	Advent International Corporation

Signature:

AP GPE VIII GP LIMITED PARTNERSHIP

By: Advent International GPE VIII, LLC, its General Partner

By: Advent International Corporation, its Manager

By:

/s/ Michael Ristaino

Name:

Michael Ristaino

Title:

Vice President of Finance – Fund Administration

August 11, 2017

Date

Page 1 of 9

Exhibit 99.2

Joint Filer Information

Name of Joint Filer:	Advent Partners GPE VIII Cayman Limited Partnership

Address of Joint Filer:	c/o Advent International Corporation
	75 State Street
	Boston, MA 02109

Relationship of Joint Filer to Issuer:	10% Owner

Issuer Name and Ticker or Trading Symbol:	INC Research Holdings, Inc. [INCR]

Date of Event Requiring
Statement (Month/Day/Year):	August 1, 2017

Designated Filer:	Advent International Corporation

Signature:

ADVENT PARTNERS GPE VIII CAYMAN LIMITED PARTNERSHIP

By: AP GPE VIII GP Limited Partnership, its General Partner

By: Advent International GPE VIII, LLC, its General Partner

By: Advent International Corporation, its Manager

By:

/s/ Michael Ristaino

Name:

Michael Ristaino

Title:

Vice President of Finance – Fund Administration

August 11, 2017

Date

Page 2 of 9

Exhibit 99.2

Joint Filer Information

Name of Joint Filer:	Advent Partners GPE VIII-B Cayman Limited Partnership

Address of Joint Filer:	c/o Advent International Corporation
	75 State Street
	Boston, MA 02109

Relationship of Joint Filer to Issuer:	10% Owner

Issuer Name and Ticker or Trading Symbol:	INC Research Holdings, Inc. [INCR]

Date of Event Requiring
Statement (Month/Day/Year):	August 1, 2017

Designated Filer:	Advent International Corporation

Signature:

ADVENT PARTNERS GPE VIII-B CAYMAN LIMITED PARTNERSHIP

By: AP GPE VIII GP Limited Partnership, its General Partner

By: Advent International GPE VIII, LLC, its General Partner

By: Advent International Corporation, its Manager

By:

/s/ Michael Ristaino

Name:

Michael Ristaino

Title:

Vice President of Finance – Fund Administration

August 11, 2017

Date

Page 3 of 9

Exhibit 99.2

Joint Filer Information

Name of Joint Filer:	Advent Partners GPE VIII Limited Partnership

Address of Joint Filer:	c/o Advent International Corporation
	75 State Street
	Boston, MA 02109

Relationship of Joint Filer to Issuer:	10% Owner

Issuer Name and Ticker or Trading Symbol:	INC Research Holdings, Inc. [INCR]

Date of Event Requiring
Statement (Month/Day/Year):	August 1, 2017

Designated Filer:	Advent International Corporation

Signature:

ADVENT PARTNERS GPE VIII LIMITED PARTNERSHIP

By: AP GPE VIII GP Limited Partnership, its General Partner

By: Advent International GPE VIII, LLC, its General Partner

By: Advent International Corporation, its Manager

By:

/s/ Michael Ristaino

Name:

Michael Ristaino

Title:

Vice President of Finance – Fund Administration

August 11, 2017

Date

Page 4 of 9

Exhibit 99.2

Joint Filer Information

Name of Joint Filer:	Advent Partners GPE VIII-A Limited Partnership

Address of Joint Filer:	c/o Advent International Corporation
	75 State Street
	Boston, MA 02109

Relationship of Joint Filer to Issuer:	10% Owner

Issuer Name and Ticker or Trading Symbol:	INC Research Holdings, Inc. [INCR]

Date of Event Requiring
Statement (Month/Day/Year):	August 1, 2017

Designated Filer:	Advent International Corporation

Signature:

ADVENT PARTNERS GPE VIII-A LIMITED PARTNERSHIP

By: AP GPE VIII GP Limited Partnership, its General Partner

By: Advent International GPE VIII, LLC, its General Partner

By: Advent International Corporation, its Manager

By:

/s/ Michael Ristaino

Name: Michael Ristaino

Title: Vice President of Finance – Fund Administration

August 11, 2017

Date

Page 5 of 9

Exhibit 99.2

Joint Filer Information

Name of Joint Filer:	Advent Partners GPE VIII-A Cayman Limited Partnership

Address of Joint Filer:	c/o Advent International Corporation
	75 State Street
	Boston, MA 02109

Relationship of Joint Filer to Issuer:	10% Owner

Issuer Name and Ticker or Trading Symbol:	INC Research Holdings, Inc. [INCR]

Date of Event Requiring
Statement (Month/Day/Year):	August 1, 2017

Designated Filer:	Advent International Corporation

Signature:

ADVENT PARTNERS GPE VIII-A CAYMAN LIMITED PARTNERSHIP

By: AP GPE VIII GP Limited Partnership, its General Partner

By: Advent International GPE VIII, LLC, its General Partner

By: Advent International Corporation, its Manager

By:

/s/ Michael Ristaino

Name:

Michael Ristaino

Title:

Vice President of Finance – Fund Administration

August 11, 2017

Date

Page 6 of 9

Exhibit 99.2

Joint Filer Information

Name of Joint Filer:	Advent International GPE VII-A Limited Partnership

Address of Joint Filer:	c/o Advent International Corporation
	75 State Street
	Boston, MA 02109

Relationship of Joint Filer to Issuer:	10% Owner

Issuer Name and Ticker or Trading Symbol:	INC Research Holdings, Inc. [INCR]

Date of Event Requiring
Statement (Month/Day/Year):	August 1, 2017

Designated Filer:	Advent International Corporation

Signature:

ADVENT INTERNATIONAL GPE VII-A LIMITED PARTNERSHIP

By: GPE VII GP Limited Partnership, its General Partner

By: Advent International GPE VII, LLC, its General Partner

By: Advent International Corporation, its Manager

By:

/s/ Michael Ristaino

Name:

Michael Ristaino

Title:

Vice President of Finance – Fund Administration

August 11, 2017

Date

Page 7 of 9

Exhibit 99.2

Joint Filer Information

Name of Joint Filer:	Advent International GPE VII-E Limited Partnership

Address of Joint Filer:	c/o Advent International Corporation
	75 State Street
	Boston, MA 02109

Relationship of Joint Filer to Issuer:	10% Owner

Issuer Name and Ticker or Trading Symbol:	INC Research Holdings, Inc. [INCR]

Date of Event Requiring
Statement (Month/Day/Year):	August 1, 2017

Designated Filer:	Advent International Corporation

Signature:

ADVENT INTERNATIONAL GPE VII-E LIMITED PARTNERSHIP

By: GPE VII GP Limited Partnership, its General Partner

By: Advent International GPE VII, LLC, its General Partner

By: Advent International Corporation, its Manager

By:

/s/ Michael Ristaino

Name:

Michael Ristaino

Title:

Vice President of Finance – Fund Administration

August 11, 2017

Date

Page 8 of 9

Exhibit 99.2

Joint Filer Information

Name of Joint Filer:	Advent International GPE VII-H Limited Partnership

Address of Joint Filer:	c/o Advent International Corporation
	75 State Street
	Boston, MA 02109

Relationship of Joint Filer to Issuer:	10% Owner

Issuer Name and Ticker or Trading Symbol:	INC Research Holdings, Inc. [INCR]

Date of Event Requiring
Statement (Month/Day/Year):	August 1, 2017

Designated Filer:	Advent International Corporation

Signature:

ADVENT INTERNATIONAL GPE VII-H LIMITED PARTNERSHIP

By: GPE VII GP Limited Partnership, its General Partner

By: Advent International GPE VII, LLC, its General Partner

By: Advent International Corporation, its Manager

By:

/s/ Michael Ristaino

Name:

Michael Ristaino

Title:

Vice President of Finance – Fund Administration

August 11, 2017

Date

Page 9 of 9

Advent Partners GPE VIII Limited Partnership 3