Exhibit 99.2

Joint Filer Information

Name of Joint Filer:	Thomas H. Lee Equity Fund VI, L.P.
Address of Joint Filer:	c/o Thomas H. Lee Partners, L.P.
	100 Federal Street, 35th Floor
	Boston, MA 02110
Relationship of Joint Filer to Issuer:	10% Owner
Issuer Name and Ticker or Trading Symbol:	INC Research Holdings, Inc. [INCR]
Date of Earliest Transaction Required to
be Reported:	August 1, 2017
Designated Filer:	Thomas H. Lee Advisors, LLC

Signature:

THOMAS H. LEE EQUITY FUND VI, L.P.

By: THL Equity Advisors VI, LLC, its General Partner

By: Thomas H. Lee Partners, L.P., its Sole Member

By: Thomas H. Lee Advisors, LLC, its General Partner

By: THL Holdco, LLC, its Managing Member

By:

/s/ Charles P. Holden
Name:	Charles P. Holden
Title:	Managing Director
August 3, 2017

Page 1 of 8

Exhibit 99.2

Joint Filer Information

Name of Joint Filer:	Thomas H. Lee Parallel (DT) Fund VI, L.P.
Address of Joint Filer:	c/o Thomas H. Lee Partners, L.P.
	100 Federal Street, 35th Floor
	Boston, MA 02110
Relationship of Joint Filer to Issuer:	10% Owner
Issuer Name and Ticker or Trading Symbol:	INC Research Holdings, Inc. [INCR]
Date of Earliest Transaction Required to
be Reported:	August 1, 2017
Designated Filer:	Thomas H. Lee Advisors, LLC

Signature:

THOMAS H. LEE PARALLEL (DT) FUND VI, L.P.

By: THL Equity Advisors VI, LLC, its General Partner

By: Thomas H. Lee Partners, L.P., its Sole Member

By: Thomas H. Lee Advisors, LLC, its General Partner

By: THL Holdco, LLC, its Managing Member

By:

/s/ Charles P. Holden
Name:	Charles P. Holden
Title:	Managing Director
August 3, 2017

Page 2 of 8

Exhibit 99.2

Joint Filer Information

Name of Joint Filer:	Thomas H. Lee Parallel Fund VI, L.P.
Address of Joint Filer:	c/o Thomas H. Lee Partners, L.P.
	100 Federal Street, 35th Floor
	Boston, MA 02110
Relationship of Joint Filer to Issuer:	10% Owner
Issuer Name and Ticker or Trading Symbol:	INC Research Holdings, Inc. [INCR]
Date of Earliest Transaction Required to
be Reported:	August 1, 2017
Designated Filer:	Thomas H. Lee Advisors, LLC

Signature:

THOMAS H. LEE PARALLEL (DT) FUND VI, L.P.

By: THL Equity Advisors VI, LLC, its General Partner

By: Thomas H. Lee Partners, L.P., its Sole Member

By: Thomas H. Lee Advisors, LLC, its General Partner

By: THL Holdco, LLC, its Managing Member

By:

/s/ Charles P. Holden
Name:	Charles P. Holden
Title:	Managing Director
August 3, 2017

Page 3 of 8

Exhibit 99.2

Joint Filer Information

Name of Joint Filer:	Thomas H. Lee Equity Fund VII, L.P.
Address of Joint Filer:	c/o Thomas H. Lee Partners, L.P.
	100 Federal Street, 35th Floor
	Boston, MA 02110
Relationship of Joint Filer to Issuer:	10% Owner
Issuer Name and Ticker or Trading Symbol:	INC Research Holdings, Inc. [INCR]
Date of Earliest Transaction Required to
be Reported:	August 1, 2017
Designated Filer:	Thomas H. Lee Advisors, LLC

Signature:

THOMAS H. LEE EQUITY FUND VII, L.P.

By: THL Equity Advisors VII, LLC, its General Partner

By: Thomas H. Lee Partners, L.P., its Sole Member

By: Thomas H. Lee Advisors, LLC, its General Partner

By: THL Holdco, LLC, its Managing Member

By:

/s/ Charles P. Holden
Name:	Charles P. Holden
Title:	Managing Director
August 3, 2017

Page 4 of 8

Exhibit 99.2

Joint Filer Information

Name of Joint Filer:	Thomas H. Lee Parallel Fund VII, L.P.
Address of Joint Filer:	c/o Thomas H. Lee Partners, L.P.
	100 Federal Street, 35th Floor
	Boston, MA 02110
Relationship of Joint Filer to Issuer:	10% Owner
Issuer Name and Ticker or Trading Symbol:	INC Research Holdings, Inc. [INCR]
Date of Earliest Transaction Required to
be Reported:	August 1, 2017
Designated Filer:	Thomas H. Lee Advisors, LLC

Signature:

THOMAS H. LEE PARALLEL FUND VII, L.P.

By: THL Equity Advisors VII, LLC, its General Partner

By: Thomas H. Lee Partners, L.P., its Sole Member

By: Thomas H. Lee Advisors, LLC, its General Partner

By: THL Holdco, LLC, its Managing Member

By:

/s/ Charles P. Holden
Name:	Charles P. Holden
Title:	Managing Director
August 3, 2017

Page 5 of 8

Exhibit 99.2

Joint Filer Information

Name of Joint Filer:	Thomas H. Lee Parallel (Cayman) Fund VII, L.P.
Address of Joint Filer:	c/o Thomas H. Lee Partners, L.P.
	100 Federal Street, 35th Floor
	Boston, MA 02110
Relationship of Joint Filer to Issuer:	10% Owner
Issuer Name and Ticker or Trading Symbol:	INC Research Holdings, Inc. [INCR]
Date of Earliest Transaction Required to
be Reported:	August 1, 2017
Designated Filer:	Thomas H. Lee Advisors, LLC

Signature:

THOMAS H. LEE PARALLEL (CAYMAN) FUND VII, L.P.

By: THL Equity Advisors VII, LLC, its General Partner

By: Thomas H. Lee Partners, L.P., its Sole Member

By: Thomas H. Lee Advisors, LLC, its General Partner

By: THL Holdco, LLC, its Managing Member

By:

/s/ Charles P. Holden
Name:	Charles P. Holden
Title:	Managing Director
August 3, 2017

Page 6 of 8

Exhibit 99.2

Joint Filer Information

Name of Joint Filer:	Todd M. Abbrecht
Address of Joint Filer:	c/o Thomas H. Lee Partners, L.P.
	100 Federal Street, 35th Floor
	Boston, MA 02110
Relationship of Joint Filer to Issuer:	Director
Issuer Name and Ticker or Trading Symbol:	INC Research Holdings, Inc. [INCR]
Date of the Earliest Transaction
Required to be Reported (Month/Day/Year):	August 1, 2017
Designated Filer:	Thomas H. Lee Advisors, LLC

Signature:

By:

/s/ Todd M. Abbrecht
Name:	Todd M. Abbrecht
August 3, 2017

Page 7 of 8

Exhibit 99.2

Joint Filer Information

Name of Joint Filer:	Joshua M. Nelson
Address of Joint Filer:	c/o Thomas H. Lee Partners, L.P.
	100 Federal Street, 35th Floor
	Boston, MA 02110
Relationship of Joint Filer to Issuer:	Director
Issuer Name and Ticker or Trading Symbol:	INC Research Holdings, Inc. [INCR]
Date of the Earliest Transaction
Required to be Reported (Month/Day/Year):	August 1, 2017
Designated Filer:	Thomas H. Lee Advisors, LLC

Signature:

By:

/s/ Joshua M. Nelson
Name:	Joshua M. Nelson
August 3, 2017

Page 8 of 8