ADVENT INTERNATIONAL, L.P. - 14 May 2021 Form 4 Insider Report for Syneos Health, Inc.

Role: 10%+ Owner
Signature: See Exhibit 99.2
Issuer symbol: N/A
Transactions as of: 14 May 2021
Net transactions value: -$36,382,260
Form type: 4
Filing time: 18 May 2021, 20:13:38 UTC
Previous filing: 10 May 2021
Next filing: 09 Jun 2021
SEC: View on sec.gov

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	SYNH	Class A Common Stock	Sale	$36,382,260	-448,942	-6.6%	$81.04	6,307,489	14 May 2021	See Notes	F1, F2, F3, F4, F5

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	See Exhibit 99.1 for text of footnote (1).
F2	See Exhibit 99.1 for text of footnote (2).
F3	See Exhibit 99.1 for text of footnote (3).
F4	See Exhibit 99.1 for text of footnote (4).
F5	See Exhibit 99.1 for text of footnote (5).

Remarks:

Exhibit 99.1 (Footnotes to Form 4) and Exhibit 99.2 (Signatures and Joint Filer Information) are incorporated herein by reference. This Form 4 is the second of six Form 4s being filed relating to the same event. This Form 4 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 4 to a maximum of 10. Each part will be filed by Designated Filer, Advent International Corporation.