Exhibit 99.2

Joint Filer Information

Name of Joint Filer:

Double Eagle Investor Holdings, L.P.

Address of Joint Filer:	c/o Advent International Corporation
	Prudential Tower, 800 Boylston Street, Suite 3300
	Boston, MA 02199-8069
Relationship of Joint Filer to Issuer:	10% Owner

Issuer Name and Ticker or Trading Symbol:

Syneos Health, Inc. [SYNH]

Date of Earliest Transaction Required

to be Reported (Month/Day/Year):

December 3, 2020

Designated Filer:

Advent International Corporation

Signature:

DOUBLE EAGLE INVESTOR HOLDINGS, L.P.

By: Double Eagle GP, LLC, its General Partner

By: Advent International Corporation, its Sole Member

By:

/s/ Michael Ristaino
Name: Michael Ristaino
Title: Vice President of Finance - Fund Administration

December 7, 2020

Date

Page 1 of 48

Joint Filer Information

Name of Joint Filer:

Double Eagle GP, LLC

Address of Joint Filer:	c/o Advent International Corporation
	Prudential Tower, 800 Boylston Street, Suite 3300
	Boston, MA 02199-8069
Relationship of Joint Filer to Issuer:	10% Owner

Issuer Name and Ticker or Trading Symbol:

Syneos Health, Inc. [SYNH]

Date of Earliest Transaction Required

to be Reported (Month/Day/Year):	December 3, 2020
Designated Filer:	Advent International Corporation

Signature:

DOUBLE EAGLE GP, LLC

By: Advent International Corporation, its Sole Member

By:

/s/ Michael Ristaino
Name: Michael Ristaino
Title: Vice President of Finance - Fund Administration

December 7, 2020

Date

Page 2 of 48

Joint Filer Information

Name of Joint Filer:

Advent International GPE VIII-C Limited Partnership

Address of Joint Filer:	c/o Advent International Corporation
	Prudential Tower, 800 Boylston Street, Suite 3300
	Boston, MA 02199-8069
Relationship of Joint Filer to Issuer:	10% Owner
Issuer Name and Ticker or Trading Symbol:	Syneos Health, Inc. [SYNH]

Date of Earliest Transaction Required

to be Reported (Month/Day/Year):	December 3, 2020
Designated Filer:	Advent International Corporation

Signature:

ADVENT INTERNATIONAL GPE VIII-C LIMITED PARTNERSHIP
By: GPE VIII GP S.à r.l., its General Partner
By: Advent International GPE VIII, LLC, its Manager		/s/ Jarlyth Gibson
By: Advent International Corporation, its Manager		Jarlyth Gibson, Manager

By:

/s/ Michael Ristaino
Name: Michael Ristaino
Title: Vice President of Finance - Fund Administration

December 7, 2020

Date

Page 3 of 48

Joint Filer Information

Name of Joint Filer:

GPE VIII GP S.à r.l.

Address of Joint Filer:	c/o Advent International Corporation
	Prudential Tower, 800 Boylston Street, Suite 3300
	Boston, MA 02199-8069
Relationship of Joint Filer to Issuer:	10% Owner
Issuer Name and Ticker or Trading Symbol:	Syneos Health, Inc. [SYNH]

Date of Earliest Transaction Required

to be Reported (Month/Day/Year):	December 3, 2020
Designated Filer:	Advent International Corporation

Signature:

GPE VIII GP S.à r.l.
By: Advent International GPE VIII, LLC, its Manager		/s/ Jarlyth Gibson
By: Advent International Corporation, its Manager		Jarlyth Gibson, Manager

By:

/s/ Michael Ristaino
Name: Michael Ristaino
Title: Vice President of Finance - Fund Administration

December 7, 2020

Date

Page 4 of 48

Joint Filer Information

Name of Joint Filer:

GPE VIII GP Limited Partnership

Address of Joint Filer:	c/o Advent International Corporation
	Prudential Tower, 800 Boylston Street, Suite 3300
	Boston, MA 02199-8069
Relationship of Joint Filer to Issuer:	10% Owner
Issuer Name and Ticker or Trading Symbol:	Syneos Health, Inc. [SYNH]

Date of Earliest Transaction Required

to be Reported (Month/Day/Year):	December 3, 2020
Designated Filer:	Advent International Corporation

Signature:

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

December 7, 2020

Date

Page 5 of 48

Joint Filer Information

Name of Joint Filer:	Advent International GPE VIII, LLC
Address of Joint Filer:	c/o Advent International Corporation
	Prudential Tower, 800 Boylston Street, Suite 3300
	Boston, MA 02199-8069
Relationship of Joint Filer to Issuer:	10% Owner
Issuer Name and Ticker or Trading Symbol:	Syneos Health, Inc. [SYNH]

Date of Earliest Transaction Required

to be Reported (Month/Day/Year):	December 3, 2020
Designated Filer:	Advent International Corporation

Signature:

ADVENT INTERNATIONAL GPE VIII, LLC

By: Advent International Corporation, its Manager

By:

/s/ Michael Ristaino
Name: Michael Ristaino
Title: Vice President of Finance - Fund Administration

December 7, 2020

Date

Page 6 of 48

Joint Filer Information

Name of Joint Filer:	GPE VII GP S.à r.l.
Address of Joint Filer:	c/o Advent International Corporation
	Prudential Tower, 800 Boylston Street, Suite 3300
	Boston, MA 02199-8069
Relationship of Joint Filer to Issuer:	10% Owner
Issuer Name and Ticker or Trading Symbol:	Syneos Health, Inc. [SYNH]

Date of Earliest Transaction Required

to be Reported (Month/Day/Year):	December 3, 2020
Designated Filer:	Advent International Corporation

Signature:

GPE VII GP S.à r.l.
By: Advent International GPE VIII, LLC, its Manager		/s/ Jarlyth Gibson
By: Advent International Corporation, its Manager		Jarlyth Gibson, Manager

By:

/s/ Michael Ristaino
Name: Michael Ristaino
Title: Vice President of Finance - Fund Administration

December 7, 2020

Date

Page 7 of 48

Joint Filer Information

Name of Joint Filer:	GPE VII GP Limited Partnership
Address of Joint Filer:	c/o Advent International Corporation
	Prudential Tower, 800 Boylston Street, Suite 3300
	Boston, MA 02199-8069
Relationship of Joint Filer to Issuer:	10% Owner
Issuer Name and Ticker or Trading Symbol:	Syneos Health, Inc. [SYNH]

Date of Earliest Transaction Required

to be Reported (Month/Day/Year):	December 3, 2020
Designated Filer:	Advent International Corporation

Signature:

GPE VII GP LIMITED PARTNERSHIP

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

December 7, 2020

Date

Page 8 of 48

Joint Filer Information

Name of Joint Filer:	Advent International GPE VII, LLC
Address of Joint Filer:	c/o Advent International Corporation
	Prudential Tower, 800 Boylston Street, Suite 3300
	Boston, MA 02199-8069
Relationship of Joint Filer to Issuer:	10% Owner
Issuer Name and Ticker or Trading Symbol:	Syneos Health, Inc. [SYNH]

Date of Earliest Transaction Required

to be Reported (Month/Day/Year):	December 3, 2020
Designated Filer:	Advent International Corporation

Signature:

ADVENT INTERNATIONAL GPE VII, LLC

By: Advent International Corporation, its Manager

By:

/s/ Michael Ristaino
Name: Michael Ristaino
Title: Vice President of Finance - Fund Administration

December 7, 2020

Date

Page 9 of 48

Joint Filer Information

Name of Joint Filer:	AP GPE VIII GP Limited Partnership
Address of Joint Filer:	c/o Advent International Corporation
	Prudential Tower, 800 Boylston Street, Suite 3300
	Boston, MA 02199-8069
Relationship of Joint Filer to Issuer:	10% Owner
Issuer Name and Ticker or Trading Symbol:	Syneos Health, Inc. [SYNH]

Date of Earliest Transaction Required

to be Reported (Month/Day/Year):	December 3, 2020
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

December 7, 2020

Date

Page 10 of 48

Joint Filer Information

Name of Joint Filer:	Advent Partners GPE VIII Cayman Limited Partnership
Address of Joint Filer:	c/o Advent International Corporation
	Prudential Tower, 800 Boylston Street, Suite 3300
	Boston, MA 02199-8069
Relationship of Joint Filer to Issuer:	10% Owner
Issuer Name and Ticker or Trading Symbol:	Syneos Health, Inc. [SYNH]

Date of Earliest Transaction Required

to be Reported (Month/Day/Year):	December 3, 2020
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

December 7, 2020

Date

Page 11 of 48

Joint Filer Information

Name of Joint Filer:

Advent Partners GPE VIII-B Cayman Limited Partnership

Address of Joint Filer:	c/o Advent International Corporation
	Prudential Tower, 800 Boylston Street, Suite 3300
	Boston, MA 02199-8069
Relationship of Joint Filer to Issuer:	10% Owner
Issuer Name and Ticker or Trading Symbol:	Syneos Health, Inc. [SYNH]

Date of Earliest Transaction Required

to be Reported (Month/Day/Year):	December 3, 2020
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

December 7, 2020

Date

Page 12 of 48

Joint Filer Information

Name of Joint Filer:	Advent Partners GPE VIII Limited Partnership
Address of Joint Filer:	c/o Advent International Corporation
	Prudential Tower, 800 Boylston Street, Suite 3300
	Boston, MA 02199-8069
Relationship of Joint Filer to Issuer:	10% Owner
Issuer Name and Ticker or Trading Symbol:	Syneos Health, Inc. [SYNH]

Date of Earliest Transaction Required

to be Reported (Month/Day/Year):	December 3, 2020
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

December 7, 2020

Date

Page 13 of 48

Joint Filer Information

Name of Joint Filer:	Advent Partners GPE VIII-A Limited Partnership
Address of Joint Filer:	c/o Advent International Corporation
	Prudential Tower, 800 Boylston Street, Suite 3300
	Boston, MA 02199-8069
Relationship of Joint Filer to Issuer:	10% Owner
Issuer Name and Ticker or Trading Symbol:	Syneos Health, Inc. [SYNH]

Date of Earliest Transaction Required

to be Reported (Month/Day/Year):	December 3, 2020
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

December 7, 2020

Date

Page 14 of 48

Joint Filer Information

Name of Joint Filer:	Advent Partners GPE VIII-A Cayman Limited Partnership
Address of Joint Filer:	c/o Advent International Corporation
	Prudential Tower, 800 Boylston Street, Suite 3300
	Boston, MA 02199-8069

Relationship of Joint Filer to Issuer:	10% Owner
Issuer Name and Ticker or Trading Symbol:	Syneos Health, Inc. [SYNH]

Date of Earliest Transaction Required

to be Reported (Month/Day/Year):	December 3, 2020
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

December 7, 2020

Date

Page 15 of 48

Joint Filer Information

Name of Joint Filer:	Advent International GPE VII-A Limited Partnership
Address of Joint Filer:	c/o Advent International Corporation
	Prudential Tower, 800 Boylston Street, Suite 3300
	Boston, MA 02199-8069

Relationship of Joint Filer to Issuer:	10% Owner
Issuer Name and Ticker or Trading Symbol:	Syneos Health, Inc. [SYNH]

Date of Earliest Transaction Required

to be Reported (Month/Day/Year):	December 3, 2020
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

December 7, 2020

Date

Page 16 of 48

Joint Filer Information

Name of Joint Filer:

Advent International GPE VII-E Limited Partnership

Address of Joint Filer:	c/o Advent International Corporation
	Prudential Tower, 800 Boylston Street, Suite 3300
	Boston, MA 02199-8069
Relationship of Joint Filer to Issuer:	10% Owner
Issuer Name and Ticker or Trading Symbol:	Syneos Health, Inc. [SYNH]

Date of Earliest Transaction Required

to be Reported (Month/Day/Year):	December 3, 2020
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

December 7, 2020

Date

Page 17 of 48

Joint Filer Information

Name of Joint Filer:	Advent International GPE VII-H Limited Partnership
Address of Joint Filer:	c/o Advent International Corporation
	Prudential Tower, 800 Boylston Street, Suite 3300
	Boston, MA 02199-8069

Relationship of Joint Filer to Issuer:	10% Owner
Issuer Name and Ticker or Trading Symbol:	Syneos Health, Inc. [SYNH]

Date of Earliest Transaction Required

to be Reported (Month/Day/Year):	December 3, 2020
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

December 7, 2020

Date

Page 18 of 48

Joint Filer Information

Name of Joint Filer:	Advent Partners GPE VII Limited Partnership
Address of Joint Filer:	c/o Advent International Corporation
	Prudential Tower, 800 Boylston Street, Suite 3300
	Boston, MA 02199-8069
Relationship of Joint Filer to Issuer:	10% Owner
Issuer Name and Ticker or Trading Symbol:	Syneos Health, Inc. [SYNH]

Date of Earliest Transaction Required

to be Reported (Month/Day/Year):	December 3, 2020
Designated Filer:	Advent International Corporation

Signature:

ADVENT PARTNERS GPE VII LIMITED PARTNERSHIP

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

December 7, 2020

Date

Page 19 of 48

Joint Filer Information

Name of Joint Filer:	Advent Partners GPE VII 2014 Limited Partnership
Address of Joint Filer:	c/o Advent International Corporation
	Prudential Tower, 800 Boylston Street, Suite 3300
	Boston, MA 02199-8069
Relationship of Joint Filer to Issuer:	10% Owner
Issuer Name and Ticker or Trading Symbol:	Syneos Health, Inc. [SYNH]

Date of Earliest Transaction Required

to be Reported (Month/Day/Year):	December 3, 2020
Designated Filer:	Advent International Corporation

Signature:

ADVENT PARTNERS GPE VII 2014 LIMITED PARTNERSHIP

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

December 7, 2020

Date

Page 20 of 48

Joint Filer Information

Name of Joint Filer:	Advent Partners GPE VII-A Limited Partnership
Address of Joint Filer:	c/o Advent International Corporation
	Prudential Tower, 800 Boylston Street, Suite 3300
	Boston, MA 02199-8069
Relationship of Joint Filer to Issuer:	10% Owner
Issuer Name and Ticker or Trading Symbol:	Syneos Health, Inc. [SYNH]

Date of Earliest Transaction Required

to be Reported (Month/Day/Year):	December 3, 2020
Designated Filer:	Advent International Corporation

Signature:

ADVENT PARTNERS GPE VII-A LIMITED PARTNERSHIP

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

December 7, 2020

Date

Page 21 of 48

Joint Filer Information

Name of Joint Filer:	Advent Partners GPE VII-A 2014 Limited Partnership
Address of Joint Filer:	c/o Advent International Corporation
	Prudential Tower, 800 Boylston Street, Suite 3300
	Boston, MA 02199-8069

Relationship of Joint Filer to Issuer:	10% Owner
Issuer Name and Ticker or Trading Symbol:	Syneos Health, Inc. [SYNH]

Date of Earliest Transaction Required

to be Reported (Month/Day/Year):	December 3, 2020
Designated Filer:	Advent International Corporation

Signature:

ADVENT PARTNERS GPE VII-A 2014 LIMITED PARTNERSHIP

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

December 7, 2020

Date

Page 22 of 48

Joint Filer Information

Name of Joint Filer:	Advent Partners GPE VII Cayman Limited Partnership
Address of Joint Filer:	c/o Advent International Corporation
	Prudential Tower, 800 Boylston Street, Suite 3300
	Boston, MA 02199-8069
Relationship of Joint Filer to Issuer:	10% Owner
Issuer Name and Ticker or Trading Symbol:	Syneos Health, Inc. [SYNH]

Date of Earliest Transaction Required

to be Reported (Month/Day/Year):	December 3, 2020
Designated Filer:	Advent International Corporation

Signature:

ADVENT PARTNERS GPE VII CAYMAN LIMITED PARTNERSHIP

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

December 7, 2020

Date

Page 23 of 48

Joint Filer Information

Name of Joint Filer:	Advent Partners GPE VII 2014 Cayman Limited Partnership
Address of Joint Filer:	c/o Advent International Corporation
	Prudential Tower, 800 Boylston Street, Suite 3300
	Boston, MA 02199-8069
Relationship of Joint Filer to Issuer:	10% Owner
Issuer Name and Ticker or Trading Symbol:	Syneos Health, Inc. [SYNH]

Date of Earliest Transaction Required

to be Reported (Month/Day/Year):	December 3, 2020
Designated Filer:	Advent International Corporation

Signature:

ADVENT PARTNERS GPE VII 2014 CAYMAN LIMITED PARTNERSHIP

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

December 7, 2020

Date

Page 24 of 48

Joint Filer Information

Name of Joint Filer:

Advent Partners GPE VII-A Cayman Limited Partnership

Address of Joint Filer:	c/o Advent International Corporation
	Prudential Tower, 800 Boylston Street, Suite 3300
	Boston, MA 02199-8069
Relationship of Joint Filer to Issuer:	10% Owner
Issuer Name and Ticker or Trading Symbol:	Syneos Health, Inc. [SYNH]

Date of Earliest Transaction Required

to be Reported (Month/Day/Year):	December 3, 2020
Designated Filer:	Advent International Corporation

Signature:

ADVENT PARTNERS GPE VII-A CAYMAN LIMITED PARTNERSHIP

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

December 7, 2020

Date

Page 25 of 48

Joint Filer Information

Name of Joint Filer:	Advent Partners GPE VII-B Cayman Limited Partnership
Address of Joint Filer:	c/o Advent International Corporation
	Prudential Tower, 800 Boylston Street, Suite 3300
	Boston, MA 02199-8069
Relationship of Joint Filer to Issuer:	10% Owner
Issuer Name and Ticker or Trading Symbol:	Syneos Health, Inc. [SYNH]

Date of Earliest Transaction Required

to be Reported (Month/Day/Year):	December 3, 2020
Designated Filer:	Advent International Corporation

Signature:

ADVENT PARTNERS GPE VII-B CAYMAN LIMITED PARTNERSHIP

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

December 7, 2020

Date

Page 26 of 48

Joint Filer Information

Name of Joint Filer:	Advent Partners GPE VII-A 2014 Cayman Limited Partnership
Address of Joint Filer:	c/o Advent International Corporation
	Prudential Tower, 800 Boylston Street, Suite 3300
	Boston, MA 02199-8069

Relationship of Joint Filer to Issuer:	10% Owner
Issuer Name and Ticker or Trading Symbol:	Syneos Health, Inc. [SYNH]

Date of Earliest Transaction Required

to be Reported (Month/Day/Year):	December 3, 2020
Designated Filer:	Advent International Corporation

Signature:

ADVENT PARTNERS GPE VII-A 2014 CAYMAN LIMITED PARTNERSHIP

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

December 7, 2020

Date

Page 27 of 48

Joint Filer Information

Name of Joint Filer:	Advent International GPE VIII Limited Partnership
Address of Joint Filer:	c/o Advent International Corporation
	Prudential Tower, 800 Boylston Street, Suite 3300
	Boston, MA 02199-8069
Relationship of Joint Filer to Issuer:	10% Owner
Issuer Name and Ticker or Trading Symbol:	Syneos Health, Inc. [SYNH]

Date of Earliest Transaction Required

to be Reported (Month/Day/Year):	December 3, 2020
Designated Filer:	Advent International Corporation

Signature:

ADVENT INTERNATIONAL GPE VIII LIMITED PARTNERSHIP

By: GPE VII GP S.à r.l., its general partner

By: Advent International GPE VIII, LLC, its Manager		/s/ Jarlyth Gibson
By: Advent International Corporation, its Manager		Jarlyth Gibson, Manager

By:

/s/ Michael Ristaino
Name: Michael Ristaino
Title: Vice President of Finance - Fund Administration

December 7, 2020

Date

Page 28 of 48

Joint Filer Information

Name of Joint Filer:	Advent International GPE VIII-B Limited Partnership
Address of Joint Filer:	c/o Advent International Corporation
	Prudential Tower, 800 Boylston Street, Suite 3300
	Boston, MA 02199-8069
Relationship of Joint Filer to Issuer:	10% Owner
Issuer Name and Ticker or Trading Symbol:	Syneos Health, Inc. [SYNH]

Date of Earliest Transaction Required

to be Reported (Month/Day/Year):	December 3, 2020
Designated Filer:	Advent International Corporation

Signature:

ADVENT INTERNATIONAL GPE VIII-B LIMITED PARTNERSHIP

By: GPE VII GP S.à r.l., its general partner

By: Advent International GPE VIII, LLC, its Manager		/s/ Jarlyth Gibson
By: Advent International Corporation, its Manager		Jarlyth Gibson, Manager

By:

/s/ Michael Ristaino
Name: Michael Ristaino
Title: Vice President of Finance - Fund Administration

December 7, 2020

Date

Page 29 of 48

Joint Filer Information

Name of Joint Filer:

Advent International GPE VIII-B-1 Limited Partnership

Address of Joint Filer:	c/o Advent International Corporation
	Prudential Tower, 800 Boylston Street, Suite 3300
	Boston, MA 02199-8069
Relationship of Joint Filer to Issuer:	10% Owner
Issuer Name and Ticker or Trading Symbol:	Syneos Health, Inc. [SYNH]

Date of Earliest Transaction Required

to be Reported (Month/Day/Year):	December 3, 2020
Designated Filer:	Advent International Corporation

Signature:

ADVENT INTERNATIONAL GPE VIII-B-1 LIMITED PARTNERSHIP

By: GPE VII GP S.à r.l., its general partner

By: Advent International GPE VIII, LLC, its Manager		/s/ Jarlyth Gibson
By: Advent International Corporation, its Manager		Jarlyth Gibson, Manager

By:

/s/ Michael Ristaino
Name: Michael Ristaino
Title: Vice President of Finance - Fund Administration

December 7, 2020

Date

Page 30 of 48

Joint Filer Information

Name of Joint Filer:	Advent International GPE VIII-B-2 Limited Partnership
Address of Joint Filer:	c/o Advent International Corporation
	Prudential Tower, 800 Boylston Street, Suite 3300
	Boston, MA 02199-8069
Relationship of Joint Filer to Issuer:	10% Owner
Issuer Name and Ticker or Trading Symbol:	Syneos Health, Inc. [SYNH]

Date of Earliest Transaction Required

to be Reported (Month/Day/Year):	December 3, 2020
Designated Filer:	Advent International Corporation

Signature:

ADVENT INTERNATIONAL GPE VIII-B-2 LIMITED PARTNERSHIP

By: GPE VII GP S.à r.l., its general partner

By: Advent International GPE VIII, LLC, its Manager		/s/ Jarlyth Gibson
By: Advent International Corporation, its Manager		Jarlyth Gibson, Manager

By:

/s/ Michael Ristaino
Name: Michael Ristaino
Title: Vice President of Finance - Fund Administration

December 7, 2020

Date

Page 31 of 48

Joint Filer Information

Name of Joint Filer:	Advent International GPE VIII-B-3 Limited Partnership
Address of Joint Filer:	c/o Advent International Corporation
	Prudential Tower, 800 Boylston Street, Suite 3300
	Boston, MA 02199-8069

Relationship of Joint Filer to Issuer:	10% Owner
Issuer Name and Ticker or Trading Symbol:	Syneos Health, Inc. [SYNH]

Date of Earliest Transaction Required

to be Reported (Month/Day/Year):	December 3, 2020
Designated Filer:	Advent International Corporation

Signature:

ADVENT INTERNATIONAL GPE VIII-B-3 LIMITED PARTNERSHIP

By: GPE VII GP S.à r.l., its general partner

By: Advent International GPE VIII, LLC, its Manager		/s/ Jarlyth Gibson
By: Advent International Corporation, its Manager		Jarlyth Gibson, Manager

By:

/s/ Michael Ristaino
Name: Michael Ristaino
Title: Vice President of Finance - Fund Administration

December 7, 2020

Date

Page 32 of 48

Joint Filer Information

Name of Joint Filer:	Advent International GPE VIII-D Limited Partnership
Address of Joint Filer:	c/o Advent International Corporation
	Prudential Tower, 800 Boylston Street, Suite 3300
	Boston, MA 02199-8069
Relationship of Joint Filer to Issuer:	10% Owner
Issuer Name and Ticker or Trading Symbol:	Syneos Health, Inc. [SYNH]

Date of Earliest Transaction Required

to be Reported (Month/Day/Year):	December 3, 2020
Designated Filer:	Advent International Corporation

Signature:

ADVENT INTERNATIONAL GPE VIII-D LIMITED PARTNERSHIP

By: GPE VII GP S.à r.l., its general partner

By: Advent International GPE VIII, LLC, its Manager		/s/ Jarlyth Gibson
By: Advent International Corporation, its Manager		Jarlyth Gibson, Manager

By:

/s/ Michael Ristaino
Name: Michael Ristaino
Title: Vice President of Finance - Fund Administration

December 7, 2020

Date

Page 33 of 48

Joint Filer Information

Name of Joint Filer:	Advent International GPE VIII-F Limited Partnership
Address of Joint Filer:	c/o Advent International Corporation
	Prudential Tower, 800 Boylston Street, Suite 3300
	Boston, MA 02199-8069
Relationship of Joint Filer to Issuer:	10% Owner
Issuer Name and Ticker or Trading Symbol:	Syneos Health, Inc. [SYNH]

Date of Earliest Transaction Required

to be Reported (Month/Day/Year):	December 3, 2020
Designated Filer:	Advent International Corporation

Signature:

ADVENT INTERNATIONAL GPE VIII-F LIMITED PARTNERSHIP

By: GPE VII GP S.à r.l., its general partner

By: Advent International GPE VIII, LLC, its Manager		/s/ Jarlyth Gibson
By: Advent International Corporation, its Manager		Jarlyth Gibson, Manager

By:

/s/ Michael Ristaino
Name: Michael Ristaino
Title: Vice President of Finance - Fund Administration

December 7, 2020

Date

Page 34 of 48

Joint Filer Information

Name of Joint Filer:	Advent International GPE VIII-H Limited Partnership
Address of Joint Filer:	c/o Advent International Corporation
	Prudential Tower, 800 Boylston Street, Suite 3300
	Boston, MA 02199-8069
Relationship of Joint Filer to Issuer:	10% Owner
Issuer Name and Ticker or Trading Symbol:	Syneos Health, Inc. [SYNH]

Date of Earliest Transaction Required

to be Reported (Month/Day/Year):	December 3, 2020
Designated Filer:	Advent International Corporation

Signature:

ADVENT INTERNATIONAL GPE VIII-H LIMITED PARTNERSHIP

By: GPE VII GP S.à r.l., its general partner

By: Advent International GPE VIII, LLC, its Manager		/s/ Jarlyth Gibson
By: Advent International Corporation, its Manager		Jarlyth Gibson, Manager

By:

/s/ Michael Ristaino
Name: Michael Ristaino
Title: Vice President of Finance - Fund Administration

December 7, 2020

Date

Page 35 of 48

Joint Filer Information

Name of Joint Filer:	Advent International GPE VIII-I Limited Partnership
Address of Joint Filer:	c/o Advent International Corporation
	Prudential Tower, 800 Boylston Street, Suite 3300
	Boston, MA 02199-8069
Relationship of Joint Filer to Issuer:	10% Owner
Issuer Name and Ticker or Trading Symbol:	Syneos Health, Inc. [SYNH]

Date of Earliest Transaction Required

to be Reported (Month/Day/Year):	December 3, 2020
Designated Filer:	Advent International Corporation

Signature:

ADVENT INTERNATIONAL GPE VIII-I LIMITED PARTNERSHIP

By: GPE VII GP S.à r.l., its general partner

By: Advent International GPE VIII, LLC, its Manager		/s/ Jarlyth Gibson
By: Advent International Corporation, its Manager		Jarlyth Gibson, Manager

By:

/s/ Michael Ristaino
Name: Michael Ristaino
Title: Vice President of Finance - Fund Administration

December 7, 2020

Date

Page 36 of 48

Joint Filer Information

Name of Joint Filer:	Advent International GPE VIII-J Limited Partnership
Address of Joint Filer:	c/o Advent International Corporation
	Prudential Tower, 800 Boylston Street, Suite 3300
	Boston, MA 02199-8069
Relationship of Joint Filer to Issuer:	10% Owner
Issuer Name and Ticker or Trading Symbol:	Syneos Health, Inc. [SYNH]

Date of Earliest Transaction Required

to be Reported (Month/Day/Year):	December 3, 2020
Designated Filer:	Advent International Corporation

Signature:

ADVENT INTERNATIONAL GPE VIII-J LIMITED PARTNERSHIP

By: GPE VII GP S.à r.l., its general partner

By: Advent International GPE VIII, LLC, its Manager		/s/ Jarlyth Gibson
By: Advent International Corporation, its Manager		Jarlyth Gibson, Manager

By:

/s/ Michael Ristaino
Name: Michael Ristaino
Title: Vice President of Finance - Fund Administration

December 7, 2020

Date

Page 37 of 48

Joint Filer Information

Name of Joint Filer:	Advent International GPE VIII-A Limited Partnership
Address of Joint Filer:	c/o Advent International Corporation
	Prudential Tower, 800 Boylston Street, Suite 3300
	Boston, MA 02199-8069
Relationship of Joint Filer to Issuer:	10% Owner
Issuer Name and Ticker or Trading Symbol:	Syneos Health, Inc. [SYNH]

Date of Earliest Transaction Required

to be Reported (Month/Day/Year):	December 3, 2020
Designated Filer:	Advent International Corporation

Signature:

ADVENT INTERNATIONAL GPE VIII-A LIMITED PARTNERSHIP

By: 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

December 7, 2020

Date

Page 38 of 48

Joint Filer Information

Name of Joint Filer:	Advent International GPE VIII-E Limited Partnership
Address of Joint Filer:	c/o Advent International Corporation
	Prudential Tower, 800 Boylston Street, Suite 3300
	Boston, MA 02199-8069
Relationship of Joint Filer to Issuer:	10% Owner
Issuer Name and Ticker or Trading Symbol:	Syneos Health, Inc. [SYNH]

Date of Earliest Transaction Required

to be Reported (Month/Day/Year):	December 3, 2020
Designated Filer:	Advent International Corporation

Signature:

ADVENT INTERNATIONAL GPE VIII-E LIMITED PARTNERSHIP

By: 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

December 7, 2020

Date

Page 39 of 48

Joint Filer Information

Name of Joint Filer:	Advent International GPE VIII-G Limited Partnership
Address of Joint Filer:	c/o Advent International Corporation
	Prudential Tower, 800 Boylston Street, Suite 3300
	Boston, MA 02199-8069
Relationship of Joint Filer to Issuer:	10% Owner
Issuer Name and Ticker or Trading Symbol:	Syneos Health, Inc. [SYNH]

Date of Earliest Transaction Required

to be Reported (Month/Day/Year):	December 3, 2020
Designated Filer:	Advent International Corporation

Signature:

ADVENT INTERNATIONAL GPE VIII-G LIMITED PARTNERSHIP

By: 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

December 7, 2020

Date

Page 40 of 48

Joint Filer Information

Name of Joint Filer:	Advent International GPE VIII-K Limited Partnership
Address of Joint Filer:	c/o Advent International Corporation
	Prudential Tower, 800 Boylston Street, Suite 3300
	Boston, MA 02199-8069
Relationship of Joint Filer to Issuer:	10% Owner
Issuer Name and Ticker or Trading Symbol:	Syneos Health, Inc. [SYNH]

Date of Earliest Transaction Required

to be Reported (Month/Day/Year):	December 3, 2020
Designated Filer:	Advent International Corporation

Signature:

ADVENT INTERNATIONAL GPE VIII-K LIMITED PARTNERSHIP

By: 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

December 7, 2020

Date

Page 41 of 48

Joint Filer Information

Name of Joint Filer:	Advent International GPE VIII-L Limited Partnership
Address of Joint Filer:	c/o Advent International Corporation
	Prudential Tower, 800 Boylston Street, Suite 3300
	Boston, MA 02199-8069
Relationship of Joint Filer to Issuer:	10% Owner
Issuer Name and Ticker or Trading Symbol:	Syneos Health, Inc. [SYNH]

Date of Earliest Transaction Required

to be Reported (Month/Day/Year):	December 3, 2020
Designated Filer:	Advent International Corporation

Signature:

ADVENT INTERNATIONAL GPE VIII-L LIMITED PARTNERSHIP

By: 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

December 7, 2020

Date

Page 42 of 48

Joint Filer Information

Name of Joint Filer:	Advent International GPE VII Limited Partnership
Address of Joint Filer:	c/o Advent International Corporation
	Prudential Tower, 800 Boylston Street, Suite 3300
	Boston, MA 02199-8069

Relationship of Joint Filer to Issuer:	10% Owner
Issuer Name and Ticker or Trading Symbol:	Syneos Health, Inc. [SYNH]

Date of Earliest Transaction Required

to be Reported (Month/Day/Year):	December 3, 2020
Designated Filer:	Advent International Corporation

Signature:

ADVENT INTERNATIONAL GPE VII LIMITED PARTNERSHIP

By: GPE VII GP S.à r.l., its general partner

By: Advent International GPE VII, LLC, its Manager		/s/ Jarlyth Gibson
By: Advent International Corporation, its Manager		Jarlyth Gibson, Manager

By:

/s/ Michael Ristaino
Name: Michael Ristaino
Title: Vice President of Finance - Fund Administration

December 7, 2020

Date

Page 43 of 48

Joint Filer Information

Name of Joint Filer:	Advent International GPE VII-B Limited Partnership
Address of Joint Filer:	c/o Advent International Corporation
	Prudential Tower, 800 Boylston Street, Suite 3300
	Boston, MA 02199-8069
Relationship of Joint Filer to Issuer:	10% Owner
Issuer Name and Ticker or Trading Symbol:	Syneos Health, Inc. [SYNH]

Date of Earliest Transaction Required

to be Reported (Month/Day/Year):	December 3, 2020
Designated Filer:	Advent International Corporation

Signature:

ADVENT INTERNATIONAL GPE VII-B LIMITED PARTNERSHIP

By: GPE VII GP S.à r.l., its general partner

By: Advent International GPE VII, LLC, its Manager		/s/ Jarlyth Gibson
By: Advent International Corporation, its Manager		Jarlyth Gibson, Manager

By:

/s/ Michael Ristaino
Name: Michael Ristaino
Title: Vice President of Finance - Fund Administration

December 7, 2020

Date

Page 44 of 48

Joint Filer Information

Name of Joint Filer:

Advent International GPE VII-C Limited Partnership

Address of Joint Filer:	c/o Advent International Corporation
	Prudential Tower, 800 Boylston Street, Suite 3300
	Boston, MA 02199-8069
Relationship of Joint Filer to Issuer:	10% Owner
Issuer Name and Ticker or Trading Symbol:	Syneos Health, Inc. [SYNH]

Date of Earliest Transaction Required

to be Reported (Month/Day/Year):	December 3, 2020
Designated Filer:	Advent International Corporation

Signature:

ADVENT INTERNATIONAL GPE VII-C LIMITED PARTNERSHIP

By: GPE VII GP S.à r.l., its general partner

By: Advent International GPE VII, LLC, its Manager		/s/ Jarlyth Gibson
By: Advent International Corporation, its Manager		Jarlyth Gibson, Manager

By:

/s/ Michael Ristaino
Name: Michael Ristaino
Title: Vice President of Finance - Fund Administration

December 7, 2020

Date

Page 45 of 48

Joint Filer Information

Name of Joint Filer:	Advent International GPE VII-D Limited Partnership
Address of Joint Filer:	c/o Advent International Corporation
	Prudential Tower, 800 Boylston Street, Suite 3300
	Boston, MA 02199-8069
Relationship of Joint Filer to Issuer:	10% Owner
Issuer Name and Ticker or Trading Symbol:	Syneos Health, Inc. [SYNH]

Date of Earliest Transaction Required

to be Reported (Month/Day/Year):	December 3, 2020
Designated Filer:	Advent International Corporation

Signature:

ADVENT INTERNATIONAL GPE VII-D LIMITED PARTNERSHIP

By: GPE VII GP S.à r.l., its general partner

By: Advent International GPE VII, LLC, its Manager		/s/ Jarlyth Gibson
By: Advent International Corporation, its Manager		Jarlyth Gibson, Manager

By:

/s/ Michael Ristaino
Name: Michael Ristaino
Title: Vice President of Finance - Fund Administration

December 7, 2020

Date

Page 46 of 48

Joint Filer Information

Name of Joint Filer:	Advent International GPE VII-F Limited Partnership
Address of Joint Filer:	c/o Advent International Corporation
	Prudential Tower, 800 Boylston Street, Suite 3300
	Boston, MA 02199-8069
Relationship of Joint Filer to Issuer:	10% Owner
Issuer Name and Ticker or Trading Symbol:	Syneos Health, Inc. [SYNH]

Date of Earliest Transaction Required

to be Reported (Month/Day/Year):	December 3, 2020
Designated Filer:	Advent International Corporation

Signature:

ADVENT INTERNATIONAL GPE VII-F LIMITED PARTNERSHIP

By: GPE VII GP S.à r.l., its general partner

By: Advent International GPE VII, LLC, its Manager		/s/ Jarlyth Gibson
By: Advent International Corporation, its Manager		Jarlyth Gibson, Manager

By:

/s/ Michael Ristaino
Name: Michael Ristaino
Title: Vice President of Finance - Fund Administration

December 7, 2020

Date

Page 47 of 48

Joint Filer Information

Name of Joint Filer:	Advent International GPE VII-G Limited Partnership
Address of Joint Filer:	c/o Advent International Corporation
	Prudential Tower, 800 Boylston Street, Suite 3300
	Boston, MA 02199-8069
Relationship of Joint Filer to Issuer:	10% Owner
Issuer Name and Ticker or Trading Symbol:	Syneos Health, Inc. [SYNH]

Date of Earliest Transaction Required

to be Reported (Month/Day/Year):	December 3, 2020
Designated Filer:	Advent International Corporation

Signature:

ADVENT INTERNATIONAL GPE VII-G LIMITED PARTNERSHIP

By: GPE VII GP S.à r.l., its general partner

By: Advent International GPE VII, LLC, its Manager		/s/ Jarlyth Gibson
By: Advent International Corporation, its Manager		Jarlyth Gibson, Manager

By:

/s/ Michael Ristaino
Name: Michael Ristaino
Title: Vice President of Finance - Fund Administration

December 7, 2020

Date

Page 48 of 48

Advent International GPE VII-H Limited Partnership 4