SC 13D/A 1 brhc10024334_sc13da.htm SC 13D/A

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549


SCHEDULE 13D
Amendment No. 4
Under the Securities Exchange Act of 1934


SYNEOS HEALTH, INC.
(Name of Issuer)
Class A Common Stock, par value $0.01 per share
(Title of Class of Securities)
45329R109
(CUSIP Number)



Michael Ristaino, Vice President of Finance - Fund Administration
c/o Advent International Corporation
Prudential Tower, 800 Boylston Street, Suite 3300
Boston, MA 02199
617-951-9400
(Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications)

May 6, 2021
(Date of Event Which Requires Filing of this Statement)



If the filing person has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because § 240.13d-1(e), 240.13d-1(f) or 240.13d-1(g) check the following box ☐.

*
The remainder of this cover page shall be filled out for a reporting person’s initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter disclosures provided in a prior cover page.

The information required on the remainder of this cover page shall not be deemed to be “filed” for the purpose of Section 18 of the Securities Exchange Act of 1934 (the “Act”) or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).



CUSIP No. 45329R109
13D
 
1
NAMES OF REPORTING PERSONS
 
 
Advent International Corporation
 
 
 
 
2
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
(a)

(b)
 
 
3
SEC USE ONLY
 
 
 
 
 
 
 
4
SOURCE OF FUNDS (SEE INSTRUCTIONS)
 
 
OO
 
 
 
 
5
CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(D) OR 2(E)
 

 
 
 
 
6
CITIZENSHIP OR PLACE OF ORGANIZATION
 
 
DELAWARE
 
 
 
 
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH
7
SOLE VOTING POWER
 
 
6,756,431 *
 
 
 
 
8
SHARED VOTING POWER
 
 
0
 
 
 
 
9
SOLE DISPOSITIVE POWER
 
 
6,756,431 *
 
 
 
 
10
SHARED DISPOSITIVE POWER
 
 
0
 
 
 
 
11
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 
 
6,756,431 *
 
 
 
 
12
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)
 

 
 
 
 
13
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
 
 
6.51% * (1)
 
 
 
 
14
TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
 
 
CO, IA
 
 
 
 
*
See Item 5 of this Amendment No. 4 to Schedule 13D.
(1)
Calculation based on 103,826,393 shares of Common Stock outstanding as reported in the Issuer’s Prospectus Supplement dated May 3, 2021 and filed with the Securities and Exchange Commission (the “SEC”) on May 5, 2021 (the “May 2021 Prospectus Supplement”).


CUSIP No. 45329R109
13D
 
1
NAMES OF REPORTING PERSONS
 
 
Double Eagle Investor Holdings, L.P.
 
 
 
 
2
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
(a)

(b)
 
 
3
SEC USE ONLY
 
 
 
 
 
 
 
4
SOURCE OF FUNDS (SEE INSTRUCTIONS)
 
 
OO
 
 
 
 
5
CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(D) OR 2(E)
 

 
 
 
 
6
CITIZENSHIP OR PLACE OF ORGANIZATION
 
 
DELAWARE
 
 
 
 
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH
7
SOLE VOTING POWER
 
 
6,640,976 *
 
 
 
 
8
SHARED VOTING POWER
 
 
0
 
 
 
 
9
SOLE DISPOSITIVE POWER
 
 
6,640,976 *
 
 
 
 
10
SHARED DISPOSITIVE POWER
 
 
0
 
 
 
 
11
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 
 
6,640,976 *
 
 
 
 
12
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)
 

 
 
 
 
13
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
 
 
6.40% * (1)
 
 
 
 
14
TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
 
 
PN
 
 
 
 
*
See Item 5 of this Amendment No. 4 to Schedule 13D.
(1)
Calculation based on 103,826,393 shares of Common Stock outstanding as reported in the May 2021 Prospectus Supplement.
 

CUSIP No. 45329R109
13D
 
1
NAMES OF REPORTING PERSONS
 
 
Advent International GPE VIII-C Limited Partnership
 
 
 
 
2
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
(a)

(b)
 
 
3
SEC USE ONLY
 
 
 
 
 
 
 
4
SOURCE OF FUNDS (SEE INSTRUCTIONS)
 
 
OO
 
 
 
 
5
CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(D) OR 2(E)
 

 
 
 
 
6
CITIZENSHIP OR PLACE OF ORGANIZATION
 
 
Luxembourg
 
 
 
 
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH
7
SOLE VOTING POWER
 
 
115,455 *
 
 
 
 
8
SHARED VOTING POWER
 
 
0
 
 
 
 
9
SOLE DISPOSITIVE POWER
 
 
115,455 *
 
 
 
 
10
SHARED DISPOSITIVE POWER
 
 
0
 
 
 
 
11
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 
 
115,455 *
 
 
 
 
12
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)
 

 
 
 
 
13
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
 
 
0.11% * (1)
 
 
 
 
14
TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
 
 
PN
 
 
 
 
*
See Item 5 of this Amendment No. 4 to Schedule 13D.
(1)
Calculation based on 103,826,393 shares of Common Stock outstanding as reported in the May 2021 Prospectus Supplement.


CUSIP No. 45329R109
13D
 
1
NAMES OF REPORTING PERSONS
 
 
Double Eagle GP, LLC
 
 
 
 
2
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
(a)
 
(b)
 
 
3
SEC USE ONLY
 
 
 
 
 
 
 
4
SOURCE OF FUNDS (SEE INSTRUCTIONS)
 
 
OO
 
 
 
 
5
CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(D) OR 2(E)
 
 
 
 
 
 
6
CITIZENSHIP OR PLACE OF ORGANIZATION
 
 
DELAWARE
 
 
 
 
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH
7
SOLE VOTING POWER
 
 
6,640,976 *
 
 
 
 
8
SHARED VOTING POWER
 
 
0
 
 
 
 
9
SOLE DISPOSITIVE POWER
 
 
6,640,976 *
 
 
 
 
10
SHARED DISPOSITIVE POWER
 
 
0
 
 
 
 
11
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 
 
6,640,976 *
 
 
 
 
12
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)
 

 
 
 
 
13
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
 
 
6.40% * (1)
 
 
 
 
14
TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
 
 
OO
 
 
 
 
*
See Item 5 of this Amendment No. 4 to Schedule 13D.
(1)
Calculation based on 103,826,393 shares of Common Stock outstanding as reported in the May 2021 Prospectus Supplement.


CUSIP No. 45329R109
13D
 
1
NAMES OF REPORTING PERSONS
 
 
Advent International GPE VIII, LLC
 
 
 
 
2
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
(a)

(b)
 
 
3
SEC USE ONLY
 
 
 
 
 
 
 
4
SOURCE OF FUNDS (SEE INSTRUCTIONS)
 
 
OO
 
 
 
 
5
CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(D) OR 2(E)
 

 
 
 
 
6
CITIZENSHIP OR PLACE OF ORGANIZATION
 
 
DELAWARE
 
 
 
 
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH
7
SOLE VOTING POWER
 
 
3,796,534 *
 
 
 
 
8
SHARED VOTING POWER
 
 
0
 
 
 
 
9
SOLE DISPOSITIVE POWER
 
 
3,796,534 *
 
 
 
 
10
SHARED DISPOSITIVE POWER
 
 
0
 
 
 
 
11
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 
 
3,796,534 *
 
 
 
 
12
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)
 
 
 
 
 
 
13
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
 
 
3.66% * (1)
 
 
 
 
14
TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
 
 
OO
 
 
 
 
*
See Item 5 of this Amendment No. 4 to Schedule 13D.
(1)
Calculation based on 103,826,393 shares of Common Stock outstanding as reported in the May 2021 Prospectus Supplement.


CUSIP No. 45329R109
13D
 
1
NAMES OF REPORTING PERSONS
 
 
GPE VIII GP S.a. r.l.
 
 
 
 
2
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
(a)
 
(b)
 
 
3
SEC USE ONLY
 
 
 
 
 
 
 
4
SOURCE OF FUNDS (SEE INSTRUCTIONS)
 
 
OO
 
 
 
 
5
CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(D) OR 2(E)
 

 
 
 
 
6
CITIZENSHIP OR PLACE OF ORGANIZATION
 
 
Luxembourg
 
 
 
 
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH
7
SOLE VOTING POWER
 
 
2,635,570 *
 
 
 
 
8
SHARED VOTING POWER
 
 
0
 
 
 
 
9
SOLE DISPOSITIVE POWER
 
 
2,635,570 *
 
 
 
 
10
SHARED DISPOSITIVE POWER
 
 
0
 
 
 
 
11
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 
 
2,635,570 *
 
 
 
 
12
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)
 

 
 
 
 
13
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
 
 
2.54% * (1)
 
 
 
 
14
TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
 
 
PN
 
 
 
 
*
See Item 5 of this Amendment No. 4 to Schedule 13D.
(1)
Calculation based on 103,826,393 shares of Common Stock outstanding as reported in the May 2021 Prospectus Supplement.
 

CUSIP No. 45329R109
13D
 
1
NAMES OF REPORTING PERSONS
 
 
GPE VIII GP Limited Partnership
 
 
 
 
2
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
(a)

(b)
 
 
3
SEC USE ONLY
 
 
 
 
 
 
 
4
SOURCE OF FUNDS (SEE INSTRUCTIONS)
 
 
OO
 
 
 
 
5
CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(D) OR 2(E)
 

 
 
 
 
6
CITIZENSHIP OR PLACE OF ORGANIZATION
 
 
Cayman Islands
 
 
 
 
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH
7
SOLE VOTING POWER
 
 
1,002,141 *
 
 
 
 
8
SHARED VOTING POWER
 
 
0
 
 
 
 
9
SOLE DISPOSITIVE POWER
 
 
1,002,141 *
 
 
 
 
10
SHARED DISPOSITIVE POWER
 
 
0
 
 
 
 
11
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 
 
1,002,141 *
 
 
 
 
12
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)
 

 
 
 
 
13
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
 
 
0.97% * (1)
 
 
 
 
14
TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
 
 
PN
 
 
 
 
*
See Item 5 of this Amendment No. 4 to Schedule 13D.
(1)
Calculation based on 103,826,393 shares of Common Stock outstanding as reported in the May 2021 Prospectus Supplement.


CUSIP No. 45329R109
13D
 
1
NAMES OF REPORTING PERSONS
 
 
AP GPE VIII GP Limited Partnership
 
 
 
 
2
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
(a)
 
(b)
 
 
3
SEC USE ONLY
 
 
 
 
 
 
 
4
SOURCE OF FUNDS (SEE INSTRUCTIONS)
 
 
OO
 
 
 
 
5
CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(D) OR 2(E)
 

 
 
 
 
6
CITIZENSHIP OR PLACE OF ORGANIZATION
 
 
Delaware
 
 
 
 
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH
7
SOLE VOTING POWER
 
 
158,823 *
 
 
 
 
8
SHARED VOTING POWER
 
 
0
 
 
 
 
9
SOLE DISPOSITIVE POWER
 
 
158,823 *
 
 
 
 
10
SHARED DISPOSITIVE POWER
 
 
0
 
 
 
 
11
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 
 
158,823 *
 
 
 
 
12
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)
 

 
 
 
 
13
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
 
 
.15% * (1)
 
 
 
 
14
TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
 
 
PN
 
 
 
 
*
See Item 5 of this Amendment No. 4 to Schedule 13D.
(1)
Calculation based on 103,826,393 shares of Common Stock outstanding as reported in the May 2021 Prospectus Supplement.


CUSIP No. 45329R109
13D
 
1
NAMES OF REPORTING PERSONS
 
 
Advent International GPE VII, LLC
 
 
 
 
2
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
(a)
 
(b)
 
 
3
SEC USE ONLY
 
 
 
 
 
 
 
4
SOURCE OF FUNDS (SEE INSTRUCTIONS)
 
 
OO
 
 
 
 
5
CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(D) OR 2(E)
 

 
 
 
 
6
CITIZENSHIP OR PLACE OF ORGANIZATION
 
 
Delaware
 
 
 
 
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH
7
SOLE VOTING POWER
 
 
2,959,897 *
 
 
 
 
8
SHARED VOTING POWER
 
 
0
 
 
 
 
9
SOLE DISPOSITIVE POWER
 
 
2,959,897 *
 
 
 
 
10
SHARED DISPOSITIVE POWER
 
 
0
 
 
 
 
11
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 
 
2,959,897 *
 
 
 
 
12
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)
 

 
 
 
 
13
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
 
 
2.85% * (1)
 
 
 
 
14
TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
 
 
OO
 
 
 
 
*
See Item 5 of this Amendment No. 4 to Schedule 13D.
(1)
Calculation based on 103,826,393 shares of Common Stock outstanding as reported in the May 2021 Prospectus Supplement.


CUSIP No. 45329R109
13D
 
1
NAMES OF REPORTING PERSONS
 
 
GPE VII GP S.a. r.l.
 
 
 
 
2
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
(a)
 
(b)
 
 
3
SEC USE ONLY
 
 
 
 
 
 
 
4
SOURCE OF FUNDS (SEE INSTRUCTIONS)
 
 
OO
 
 
 
 
5
CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(D) OR 2(E)
 
 
 
 
 
 
6
CITIZENSHIP OR PLACE OF ORGANIZATION
 
 
Luxembourg
 
 
 
 
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH
7
SOLE VOTING POWER
 
 
1,869,275 *
 
 
 
 
8
SHARED VOTING POWER
 
 
0
 
 
 
 
9
SOLE DISPOSITIVE POWER
 
 
1,869,275 *
 
 
 
 
10
SHARED DISPOSITIVE POWER
 
 
0
 
 
 
 
11
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 
 
1,869,275 *
 
 
 
 
12
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)
 

 
 
 
 
13
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
 
 
1.80% * (1)
 
 
 
 
14
TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
 
 
PN
 
 
 
 
*
See Item 5 of this Amendment No. 4 to Schedule 13D.
(1)
Calculation based on 103,826,393 shares of Common Stock outstanding as reported in the May 2021 Prospectus Supplement.


CUSIP No. 45329R109
13D
 
1
NAMES OF REPORTING PERSONS
 
 
GPE VII GP Limited Partnership
 
 
 
 
2
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
(a)
 
(b)
 
 
3
SEC USE ONLY
 
 
 
 
 
 
 
4
SOURCE OF FUNDS (SEE INSTRUCTIONS)
 
 
OO
 
 
 
 
5
CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(D) OR 2(E)
 

 
 
 
 
6
CITIZENSHIP OR PLACE OF ORGANIZATION
 
 
Cayman Islands
 
 
 
 
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH
7
SOLE VOTING POWER
 
 
997,363 *
 
 
 
 
8
SHARED VOTING POWER
 
 
0
 
 
 
 
9
SOLE DISPOSITIVE POWER
 
 
997,363 *
 
 
 
 
10
SHARED DISPOSITIVE POWER
 
 
0
 
 
 
 
11
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 
 
997,363 *
 
 
 
 
12
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)
 
 
 
 
 
 
13
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
 
 
0.96% * (1)
 
 
 
 
14
TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
 
 
PN
 
 
 
 
*
See Item 5 of this Amendment No. 4 to Schedule 13D.
(1)
Calculation based on 103,826,393 shares of Common Stock outstanding as reported in the May 2021 Prospectus Supplement.


CUSIP No. 45329R109
13D
 
1
NAMES OF REPORTING PERSONS
 
 
Advent International GPE VIII Limited Partnership
 
 
 
 
2
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
(a)
 
(b)
 
 
3
SEC USE ONLY
 
 
 
 
 
 
 
4
SOURCE OF FUNDS (SEE INSTRUCTIONS)
 
 
OO
 
 
 
 
5
CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(D) OR 2(E)
 

 
 
 
 
6
CITIZENSHIP OR PLACE OF ORGANIZATION
 
 
Luxembourg
 
 
 
 
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH
7
SOLE VOTING POWER
 
 
214,017 *
 
 
 
 
8
SHARED VOTING POWER
 
 
0
 
 
 
 
9
SOLE DISPOSITIVE POWER
 
 
214,017 *
 
 
 
 
10
SHARED DISPOSITIVE POWER
 
 
0
 
 
 
 
11
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 
 
214,017 *
 
 
 
 
12
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)
 

 
 
 
 
13
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
 
 
0.21% * (1)
 
 
 
 
14
TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
 
 
PN
 
 
 
 
*
See Item 5 of this Amendment No. 4 to Schedule 13D.
(1)
Calculation based on 103,826,393 shares of Common Stock outstanding as reported in the May 2021 Prospectus Supplement.


CUSIP No. 45329R109
13D
 
1
NAMES OF REPORTING PERSONS
 
 
Advent International GPE VIII-B Limited Partnership
 
 
 
 
2
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
(a)
 
(b)
 
 
3
SEC USE ONLY
 
 
 
 
 
 
 
4
SOURCE OF FUNDS (SEE INSTRUCTIONS)
 
 
OO
 
 
 
 
5
CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(D) OR 2(E)
 

 
 
 
 
6
CITIZENSHIP OR PLACE OF ORGANIZATION
 
 
Luxembourg
 
 
 
 
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH
7
SOLE VOTING POWER
 
 
708,911*
 
 
 
 
8
SHARED VOTING POWER
 
 
0
 
 
 
 
9
SOLE DISPOSITIVE POWER
 
 
708,911*
 
 
 
 
10
SHARED DISPOSITIVE POWER
 
 
0
 
 
 
 
11
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 
 
708,911*
 
 
 
 
12
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)
 

 
 
 
 
13
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
 
 
0.68% * (1)
 
 
 
 
14
TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
 
 
PN
 
 
 
 
*
See Item 5 of this Amendment No. 4 to Schedule 13D.
(1)
Calculation based on 103,826,393 shares of Common Stock outstanding as reported in the May 2021 Prospectus Supplement.


CUSIP No. 45329R109
13D
 
1
NAMES OF REPORTING PERSONS
 
 
Advent International GPE VIII-B-1 Limited Partnership
 
 
 
 
2
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
(a)
 
(b)
 
 
3
SEC USE ONLY
 
 
 
 
 
 
 
4
SOURCE OF FUNDS (SEE INSTRUCTIONS)
 
 
OO
 
 
 
 
5
CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(D) OR 2(E)
 

 
 
 
 
6
CITIZENSHIP OR PLACE OF ORGANIZATION
 
 
Luxembourg
 
 
 
 
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH
7
SOLE VOTING POWER
 
 
251,556 *
 
 
 
 
8
SHARED VOTING POWER
 
 
0
 
 
 
 
9
SOLE DISPOSITIVE POWER
 
 
251,556 *
 
 
 
 
10
SHARED DISPOSITIVE POWER
 
 
0
 
 
 
 
11
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 
 
251,556 *
 
 
 
 
12
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)
 

 
 
 
 
13
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
 
 
0.24% * (1)
 
 
 
 
14
TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
 
 
PN
 
 
 
 
*
See Item 5 of this Amendment No. 4 to Schedule 13D.
(1)
Calculation based on 103,826,393 shares of Common Stock outstanding as reported in the May 2021 Prospectus Supplement.


CUSIP No. 45329R109
13D
 
1
NAMES OF REPORTING PERSONS
 
 
Advent International GPE VIII-B-2 Limited Partnership
 
 
 
 
2
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
(a)
 
(b)
 
 
3
SEC USE ONLY
 
 
 
 
 
 
 
4
SOURCE OF FUNDS (SEE INSTRUCTIONS)
 
 
OO
 
 
 
 
5
CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(D) OR 2(E)
 

 
 
 
 
6
CITIZENSHIP OR PLACE OF ORGANIZATION
 
 
Luxembourg
 
 
 
 
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH
7
SOLE VOTING POWER
 
 
187,558 *
 
 
 
 
8
SHARED VOTING POWER
 
 
0
 
 
 
 
9
SOLE DISPOSITIVE POWER
 
 
187,558 *
 
 
 
 
10
SHARED DISPOSITIVE POWER
 
 
0
 
 
 
 
11
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 
 
187,558 *
 
 
 
 
12
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)
 

 
 
 
 
13
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
 
 
0.18% * (1)
 
 
 
 
14
TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
 
 
PN
 
 
 
 
*
See Item 5 of this Amendment No. 4 to Schedule 13D.
(1)
Calculation based on 103,826,393 shares of Common Stock outstanding as reported in the May 2021 Prospectus Supplement.


CUSIP No. 45329R109
13D
 
1
NAMES OF REPORTING PERSONS
 
 
Advent International GPE VIII-B-3 Limited Partnership
 
 
 
 
2
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
(a)
 
(b)
 
 
3
SEC USE ONLY
 
 
 
 
 
 
 
4
SOURCE OF FUNDS (SEE INSTRUCTIONS)
 
 
OO
 
 
 
 
5
CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(D) OR 2(E)
 

 
 
 
 
6
CITIZENSHIP OR PLACE OF ORGANIZATION
 
 
Luxembourg
 
 
 
 
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH
7
SOLE VOTING POWER
 
 
292,878 *
 
 
 
 
8
SHARED VOTING POWER
 
 
0
 
 
 
 
9
SOLE DISPOSITIVE POWER
 
 
292,878 *
 
 
 
 
10
SHARED DISPOSITIVE POWER
 
 
0
 
 
 
 
11
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 
 
292,878 *
 
 
 
 
12
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)
 

 
 
 
 
13
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
 
 
0.28% * (1)
 
 
 
 
14
TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
 
 
PN
 
 
 
 
*
See Item 5 of this Amendment No. 4 to Schedule 13D.
(1)
Calculation based on 103,826,393 shares of Common Stock outstanding as reported in the May 2021 Prospectus Supplement.


CUSIP No. 45329R109
13D
 
1
NAMES OF REPORTING PERSONS
 
 
Advent International GPE VIII-D Limited Partnership
 
 
 
 
2
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
(a)
 
(b)
 
 
3
SEC USE ONLY
 
 
 
 
 
 
 
4
SOURCE OF FUNDS (SEE INSTRUCTIONS)
 
 
OO
 
 
 
 
5
CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(D) OR 2(E)
 

 
 
 
 
6
CITIZENSHIP OR PLACE OF ORGANIZATION
 
 
Luxembourg
 
 
 
 
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH
7
SOLE VOTING POWER
 
 
98,739 *
 
 
 
 
8
SHARED VOTING POWER
 
 
0
 
 
 
 
9
SOLE DISPOSITIVE POWER
 
 
98,739 *
 
 
 
 
10
SHARED DISPOSITIVE POWER
 
 
0
 
 
 
 
11
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 
 
98,739 *
 
 
 
 
12
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)
 

 
 
 
 
13
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
 
 
0.10% * (1)
 
 
 
 
14
TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
 
 
PN
 
 
 
 
*
See Item 5 of this Amendment No. 4 to Schedule 13D.
(1)
Calculation based on 103,826,393 shares of Common Stock outstanding as reported in the May 2021 Prospectus Supplement.


CUSIP No. 45329R109
13D
 
1
NAMES OF REPORTING PERSONS
 
 
Advent International GPE VIII-F Limited Partnership
 
 
 
 
2
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
(a)
 
(b)
 
 
3
SEC USE ONLY
 
 
 
 
 
 
 
4
SOURCE OF FUNDS (SEE INSTRUCTIONS)
 
 
OO
 
 
 
 
5
CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(D) OR 2(E)
 

 
 
 
 
6
CITIZENSHIP OR PLACE OF ORGANIZATION
 
 
Luxembourg
 
 
 
 
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH
7
SOLE VOTING POWER
 
 
29,262 *
 
 
 
 
8
SHARED VOTING POWER
 
 
0
 
 
 
 
9
SOLE DISPOSITIVE POWER
 
 
29,262 *
 
 
 
 
10
SHARED DISPOSITIVE POWER
 
 
0
 
 
 
 
11
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 
 
29,262 *
 
 
 
 
12
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)
 

 
 
 
 
13
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
 
 
0.03% * (1)
 
 
 
 
14
TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
 
 
PN
 
 
 
 
*
See Item 5 of this Amendment No. 4 to Schedule 13D.
(1)
Calculation based on 103,826,393 shares of Common Stock outstanding as reported in the May 2021 Prospectus Supplement.



CUSIP No. 45329R109
13D
 
1
NAMES OF REPORTING PERSONS
 
 
Advent International GPE VIII-H Limited Partnership
 
 
 
 
2
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
(a)
 
(b)
 
 
3
SEC USE ONLY
 
 
 
 
 
 
 
4
SOURCE OF FUNDS (SEE INSTRUCTIONS)
 
 
OO
 
 
 
 
5
CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(D) OR 2(E)
 

 
 
 
 
6
CITIZENSHIP OR PLACE OF ORGANIZATION
 
 
Luxembourg
 
 
 
 
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH
7
SOLE VOTING POWER
 
 
259,237 *
 
 
 
 
8
SHARED VOTING POWER
 
 
0
 
 
 
 
9
SOLE DISPOSITIVE POWER
 
 
259,237 *
 
 
 
 
10
SHARED DISPOSITIVE POWER
 
 
0
 
 
 
 
11
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 
 
259,237 *
 
 
 
 
12
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)
 

 
 
 
 
13
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
 
 
0.25% * (1)
 
 
 
 
14
TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
 
 
PN
 
 
 
 
*
See Item 5 of this Amendment No. 4 to Schedule 13D.
(1)
Calculation based on 103,826,393 shares of Common Stock outstanding as reported in the May 2021 Prospectus Supplement.


CUSIP No. 45329R109
13D
 
1
NAMES OF REPORTING PERSONS
 
 
Advent International GPE VIII-I Limited Partnership
 
 
 
 
2
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
(a)
 
(b)
 
 
3
SEC USE ONLY
 
 
 
 
 
 
 
4
SOURCE OF FUNDS (SEE INSTRUCTIONS)
 
 
OO
 
 
 
 
5
CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(D) OR 2(E)
 

 
 
 
 
6
CITIZENSHIP OR PLACE OF ORGANIZATION
 
 
Luxembourg
 
 
 
 
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH
7
SOLE VOTING POWER
 
 
241,063 *
 
 
 
 
8
SHARED VOTING POWER
 
 
0
 
 
 
 
9
SOLE DISPOSITIVE POWER
 
 
241,063 *
 
 
 
 
10
SHARED DISPOSITIVE POWER
 
 
0
 
 
 
 
11
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 
 
241,063 *
 
 
 
 
12
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)
 

 
 
 
 
13
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
 
 
0.23% * (1)
 
 
 
 
14
TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
 
 
PN
 
 
 
 
*
See Item 5 of this Amendment No. 4 to Schedule 13D.
(1)
Calculation based on 103,826,393 shares of Common Stock outstanding as reported in the May 2021 Prospectus Supplement.


CUSIP No. 45329R109
13D
 
1
NAMES OF REPORTING PERSONS
 
 
Advent International GPE VIII-J Limited Partnership
 
 
 
 
2
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
(a)
 
(b)
 
 
3
SEC USE ONLY
 
 
 
 
 
 
 
4
SOURCE OF FUNDS (SEE INSTRUCTIONS)
 
 
OO
 
 
 
 
5
CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(D) OR 2(E)
 

 
 
 
 
6
CITIZENSHIP OR PLACE OF ORGANIZATION
 
 
Luxembourg
 
 
 
 
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH
7
SOLE VOTING POWER
 
 
236,894  *
 
 
 
 
8
SHARED VOTING POWER
 
 
0
 
 
 
 
9
SOLE DISPOSITIVE POWER
 
 
236,894  *
 
 
 
 
10
SHARED DISPOSITIVE POWER
 
 
0
 
 
 
 
11
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 
 
236,894  *
 
 
 
 
12
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)
 

 
 
 
 
13
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
 
 
0.23% * (1)
 
 
 
 
14
TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
 
 
PN
 
 
 
 
*
See Item 5 of this Amendment No. 4 to Schedule 13D.
(1)
Calculation based on 103,826,393 shares of Common Stock outstanding as reported in the May 2021 Prospectus Supplement.


CUSIP No. 45329R109
13D
 
1
NAMES OF REPORTING PERSONS
 
 
Advent International GPE VIII-A Limited Partnership
 
 
 
 
2
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
(a)
 
(b)
 
 
3
SEC USE ONLY
 
 
 
 
 
 
 
4
SOURCE OF FUNDS (SEE INSTRUCTIONS)
 
 
OO
 
 
 
 
5
CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(D) OR 2(E)
 

 
 
 
 
6
CITIZENSHIP OR PLACE OF ORGANIZATION
 
 
Cayman Islands
 
 
 
 
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH
7
SOLE VOTING POWER
 
 
502,003 *
 
 
 
 
8
SHARED VOTING POWER
 
 
0
 
 
 
 
9
SOLE DISPOSITIVE POWER
 
 
502,003 *
 
 
 
 
10
SHARED DISPOSITIVE POWER
 
 
0
 
 
 
 
11
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 
 
502,003 *
 
 
 
 
12
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)
 

 
 
 
 
13
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
 
 
0.48% * (1)
 
 
 
 
14
TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
 
 
PN
 
 
 
 
*
See Item 5 of this Amendment No. 4 to Schedule 13D.
(1)
Calculation based on 103,826,393 shares of Common Stock outstanding as reported in the May 2021 Prospectus Supplement.


CUSIP No. 45329R109
13D
 
1
NAMES OF REPORTING PERSONS
 
 
Advent International GPE VIII-E Limited Partnership
 
 
 
 
2
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
(a)
 
(b)
 
 
3
SEC USE ONLY
 
 
 
 
 
 
 
4
SOURCE OF FUNDS (SEE INSTRUCTIONS)
 
 
OO
 
 
 
 
5
CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(D) OR 2(E)
 

 
 
 
 
6
CITIZENSHIP OR PLACE OF ORGANIZATION
 
 
Cayman Islands
 
 
 
 
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH
7
SOLE VOTING POWER
 
 
109,968 *
 
 
 
 
8
SHARED VOTING POWER
 
 
0
 
 
 
 
9
SOLE DISPOSITIVE POWER
 
 
109,968 *
 
 
 
 
10
SHARED DISPOSITIVE POWER
 
 
0
 
 
 
 
11
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 
 
109,968 *
 
 
 
 
12
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)
 

 
 
 
 
13
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
 
 
0.11% * (1)
 
 
 
 
14
TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
 
 
PN
 
 
 
 
*
See Item 5 of this Amendment No. 4 to Schedule 13D.
(1)
Calculation based on 103,826,393 shares of Common Stock outstanding as reported in the May 2021 Prospectus Supplement.


CUSIP No. 45329R109
13D
 
1
NAMES OF REPORTING PERSONS
 
 
Advent International GPE VIII-G Limited Partnership
 
 
 
 
2
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
(a)
 
(b)
 
 
3
SEC USE ONLY
 
 
 
 
 
 
 
4
SOURCE OF FUNDS (SEE INSTRUCTIONS)
 
 
OO
 
 
 
 
5
CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(D) OR 2(E)
 

 
 
 
 
6
CITIZENSHIP OR PLACE OF ORGANIZATION
 
 
Cayman Islands
 
 
 
 
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH
7
SOLE VOTING POWER
 
 
186,511 *
 
 
 
 
8
SHARED VOTING POWER
 
 
0
 
 
 
 
9
SOLE DISPOSITIVE POWER
 
 
186,511 *
 
 
 
 
10
SHARED DISPOSITIVE POWER
 
 
0
 
 
 
 
11
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 
 
186,511 *
 
 
 
 
12
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)
 

 
 
 
 
13
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
 
 
0.18% * (1)
 
 
 
 
14
TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
 
 
PN
 
 
 
 
*
See Item 5 of this Amendment No. 4 to Schedule 13D.
(1)
Calculation based on 103,826,393 shares of Common Stock outstanding as reported in the May 2021 Prospectus Supplement.


CUSIP No. 45329R109
13D
 
1
NAMES OF REPORTING PERSONS
 
 
Advent International GPE VIII-K Limited Partnership
 
 
 
 
2
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
(a)
 
(b)
 
 
3
SEC USE ONLY
 
 
 
 
 
 
 
4
SOURCE OF FUNDS (SEE INSTRUCTIONS)
 
 
OO
 
 
 
 
5
CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(D) OR 2(E)
 

 
 
 
 
6
CITIZENSHIP OR PLACE OF ORGANIZATION
 
 
Cayman Islands
 
 
 
 
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH
7
SOLE VOTING POWER
 
 
102,644 *
 
 
 
 
8
SHARED VOTING POWER
 
 
0
 
 
 
 
9
SOLE DISPOSITIVE POWER
 
 
102,644 *
 
 
 
 
10
SHARED DISPOSITIVE POWER
 
 
0
 
 
 
 
11
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 
 
102,644 *
 
 
 
 
12
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)
 

 
 
 
 
13
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
 
 
0.10% * (1)
 
 
 
 
14
TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
 
 
PN
 
 
 
 
*
See Item 5 of this Amendment No. 4 to Schedule 13D.
(1)
Calculation based on 103,826,393 shares of Common Stock outstanding as reported in the May 2021 Prospectus Supplement.


CUSIP No. 45329R109
13D
 
1
NAMES OF REPORTING PERSONS
 
 
Advent International GPE VIII-L Limited Partnership
 
 
 
 
2
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
(a)
 
(b)
 
 
3
SEC USE ONLY
 
 
 
 
 
 
 
4
SOURCE OF FUNDS (SEE INSTRUCTIONS)
 
 
OO
 
 
 
 
5
CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(D) OR 2(E)
 

 
 
 
 
6
CITIZENSHIP OR PLACE OF ORGANIZATION
 
 
Cayman Islands
 
 
 
 
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH
7
SOLE VOTING POWER
 
 
101,015 *
 
 
 
 
8
SHARED VOTING POWER
 
 
0
 
 
 
 
9
SOLE DISPOSITIVE POWER
 
 
101,015 *
 
 
 
 
10
SHARED DISPOSITIVE POWER
 
 
0
 
 
 
 
11
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 
 
101,015 *
 
 
 
 
12
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)
 

 
 
 
 
13
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
 
 
0.10% * (1)
 
 
 
 
14
TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
 
 
PN
 
 
 
 
*
See Item 5 of this Amendment No. 4 to Schedule 13D.
(1)
Calculation based on 103,826,393 shares of Common Stock outstanding as reported in the May 2021 Prospectus Supplement.


CUSIP No. 45329R109
13D
 
1
NAMES OF REPORTING PERSONS
 
 
Advent Partners GPE VIII Cayman Limited Partnership
 
 
 
 
2
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
(a)
 
(b)
 
 
3
SEC USE ONLY
 
 
 
 
 
 
 
4
SOURCE OF FUNDS (SEE INSTRUCTIONS)
 
 
OO
 
 
 
 
5
CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(D) OR 2(E)
 

 
 
 
 
6
CITIZENSHIP OR PLACE OF ORGANIZATION
 
 
Cayman Islands
 
 
 
 
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH
7
SOLE VOTING POWER
 
 
49,322  *
 
 
 
 
8
SHARED VOTING POWER
 
 
0
 
 
 
 
9
SOLE DISPOSITIVE POWER
 
 
49,322  *
 
 
 
 
10
SHARED DISPOSITIVE POWER
 
 
0
 
 
 
 
11
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 
 
49,322  *
 
 
 
 
12
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)
 

 
 
 
 
13
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
 
 
0.05% * (1)
 
 
 
 
14
TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
 
 
PN
 
 
 
 
*
See Item 5 of this Amendment No. 4 to Schedule 13D.
(1)
Calculation based on 103,826,393 shares of Common Stock outstanding as reported in the May 2021 Prospectus Supplement.


CUSIP No. 45329R109
13D
 
1
NAMES OF REPORTING PERSONS
 
 
Advent Partners GPE VIII-B Cayman Limited Partnership
 
 
 
 
2
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
(a)
 
(b)
 
 
3
SEC USE ONLY
 
 
 
 
 
 
 
4
SOURCE OF FUNDS (SEE INSTRUCTIONS)
 
 
OO
 
 
 
 
5
CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(D) OR 2(E)
 

 
 
 
 
6
CITIZENSHIP OR PLACE OF ORGANIZATION
 
 
Cayman Islands
 
 
 
 
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH
7
SOLE VOTING POWER
 
 
84,381 *
 
 
 
 
8
SHARED VOTING POWER
 
 
0
 
 
 
 
9
SOLE DISPOSITIVE POWER
 
 
84,381 *
 
 
 
 
10
SHARED DISPOSITIVE POWER
 
 
0
 
 
 
 
11
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 
 
84,381 *
 
 
 
 
12
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)
 

 
 
 
 
13
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
 
 
0.08% * (1)
 
 
 
 
14
TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
 
 
PN
 
 
 
 
*
See Item 5 of this Amendment No. 4 to Schedule 13D.
(1)
Calculation based on 103,826,393 shares of Common Stock outstanding as reported in the May 2021 Prospectus Supplement.


CUSIP No. 45329R109
13D
 
1
NAMES OF REPORTING PERSONS
 
 
Advent Partners GPE VIII Limited Partnership
 
 
 
 
2
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
(a)
 
(b)
 
 
3
SEC USE ONLY
 
 
 
 
 
 
 
4
SOURCE OF FUNDS (SEE INSTRUCTIONS)
 
 
OO
 
 
 
 
5
CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(D) OR 2(E)
 

 
 
 
 
6
CITIZENSHIP OR PLACE OF ORGANIZATION
 
 
DELAWARE
 
 
 
 
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH
7
SOLE VOTING POWER
 
 
8,277*
 
 
 
 
8
SHARED VOTING POWER
 
 
0
 
 
 
 
9
SOLE DISPOSITIVE POWER
 
 
8,277*
 
 
 
 
10
SHARED DISPOSITIVE POWER
 
 
0
 
 
 
 
11
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 
 
8,277*
 
 
 
 
12
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)
 

 
 
 
 
13
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
 
 
0.01% * (1)
 
 
 
 
14
TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
 
 
PN
 
 
 
 
*
See Item 5 of this Amendment No. 4 to Schedule 13D.
(1)
Calculation based on 103,826,393 shares of Common Stock outstanding as reported in the May 2021 Prospectus Supplement.


CUSIP No. 45329R109
13D
 
1
NAMES OF REPORTING PERSONS
 
 
Advent Partners GPE VIII-A Limited Partnership
 
 
 
 
2
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
(a)
 
(b)
 
 
3
SEC USE ONLY
 
 
 
 
 
 
 
4
SOURCE OF FUNDS (SEE INSTRUCTIONS)
 
 
OO
 
 
 
 
5
CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(D) OR 2(E)
 

 
 
 
 
6
CITIZENSHIP OR PLACE OF ORGANIZATION
 
 
DELAWARE
 
 
 
 
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH
7
SOLE VOTING POWER
 
 
10,276 *
 
 
 
 
8
SHARED VOTING POWER
 
 
0
 
 
 
 
9
SOLE DISPOSITIVE POWER
 
 
10,276 *
 
 
 
 
10
SHARED DISPOSITIVE POWER
 
 
0
 
 
 
 
11
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 
 
10,276 *
 
 
 
 
12
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)
 

 
 
 
 
13
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
 
 
0.01% * (1)
 
 
 
 
14
TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
 
 
PN
 
 
 
 
*
See Item 5 of this Amendment No. 4 to Schedule 13D.
(1)
Calculation based on 103,826,393 shares of Common Stock outstanding as reported in the May 2021 Prospectus Supplement.


CUSIP No. 45329R109
13D
 
1
NAMES OF REPORTING PERSONS
 
 
Advent Partners GPE VIII-A Cayman Limited Partnership
 
 
 
 
2
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
(a)
 
(b)
 
 
3
SEC USE ONLY
 
 
 
 
 
 
 
4
SOURCE OF FUNDS (SEE INSTRUCTIONS)
 
 
OO
 
 
 
 
5
CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(D) OR 2(E)
 

 
 
 
 
6
CITIZENSHIP OR PLACE OF ORGANIZATION
 
 
Cayman Islands
 
 
 
 
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH
7
SOLE VOTING POWER
 
 
6,567 *
 
 
 
 
8
SHARED VOTING POWER
 
 
0
 
 
 
 
9
SOLE DISPOSITIVE POWER
 
 
6,567 *
 
 
 
 
10
SHARED DISPOSITIVE POWER
 
 
0
 
 
 
 
11
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 
 
6,567 *
 
 
 
 
12
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)
 

 
 
 
 
13
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
 
 
0.01% * (1)
 
 
 
 
14
TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
 
 
PN
 
 
 
 
*
See Item 5 of this Amendment No. 4 to Schedule 13D.
(1)
Calculation based on 103,826,393 shares of Common Stock outstanding as reported in the May 2021 Prospectus Supplement.


CUSIP No. 45329R109
13D
 
1
NAMES OF REPORTING PERSONS
 
 
Advent International GPE VII Limited Partnership
 
 
 
 
2
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
(a)
 
(b)
 
 
3
SEC USE ONLY
 
 
 
 
 
 
 
4
SOURCE OF FUNDS (SEE INSTRUCTIONS)
 
 
OO
 
 
 
 
5
CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(D) OR 2(E)
 

 
 
 
 
6
CITIZENSHIP OR PLACE OF ORGANIZATION
 
 
Luxembourg
 
 
 
 
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH
7
SOLE VOTING POWER
 
 
317,668 *
 
 
 
 
8
SHARED VOTING POWER
 
 
0
 
 
 
 
9
SOLE DISPOSITIVE POWER
 
 
317,668 *
 
 
 
 
10
SHARED DISPOSITIVE POWER
 
 
0
 
 
 
 
11
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 
 
317,668 *
 
 
 
 
12
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)
 

 
 
 
 
13
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
 
 
0.31% * (1)
 
 
 
 
14
TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
 
 
PN
 
 
 
 
*
See Item 5 of this Amendment No. 4 to Schedule 13D.
(1)
Calculation based on 103,826,393 shares of Common Stock outstanding as reported in the May 2021 Prospectus Supplement.


CUSIP No. 45329R109
13D
 
1
NAMES OF REPORTING PERSONS
 
 
Advent International GPE VII-B Limited Partnership
 
 
 
 
2
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
(a)
 
(b)
 
 
3
SEC USE ONLY
 
 
 
 
 
 
 
4
SOURCE OF FUNDS (SEE INSTRUCTIONS)
 
 
OO
 
 
 
 
5
CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(D) OR 2(E)
 

 
 
 
 
6
CITIZENSHIP OR PLACE OF ORGANIZATION
 
 
Luxembourg
 
 
 
 
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH
7
SOLE VOTING POWER
 
 
905,468 *
 
 
 
 
8
SHARED VOTING POWER
 
 
0
 
 
 
 
9
SOLE DISPOSITIVE POWER
 
 
905,468 *
 
 
 
 
10
SHARED DISPOSITIVE POWER
 
 
0
 
 
 
 
11
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 
 
905,468 *
 
 
 
 
12
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)
 

 
 
 
 
13
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
 
 
0.87% * (1)
 
 
 
 
14
TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
 
 
PN
 
 
 
 
*
See Item 5 of this Amendment No. 4 to Schedule 13D.
(1)
Calculation based on 103,826,393 shares of Common Stock outstanding as reported in the May 2021 Prospectus Supplement.


CUSIP No. 45329R109
13D
 
1
NAMES OF REPORTING PERSONS
 
 
Advent International GPE VII-C Limited Partnership
 
 
 
 
2
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
(a)
 
(b)
 
 
3
SEC USE ONLY
 
 
 
 
 
 
 
4
SOURCE OF FUNDS (SEE INSTRUCTIONS)
 
 
OO
 
 
 
 
5
CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(D) OR 2(E)
 

 
 
 
 
6
CITIZENSHIP OR PLACE OF ORGANIZATION
 
 
Luxembourg
 
 
 
 
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH
7
SOLE VOTING POWER
 
 
287,804 *
 
 
 
 
8
SHARED VOTING POWER
 
 
0
 
 
 
 
9
SOLE DISPOSITIVE POWER
 
 
287,804 *
 
 
 
 
10
SHARED DISPOSITIVE POWER
 
 
0
 
 
 
 
11
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 
 
287,804 *
 
 
 
 
12
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)
 

 
 
 
 
13
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
 
 
0.28% * (1)
 
 
 
 
14
TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
 
 
PN
 
 
 
 
*
See Item 5 of this Amendment No. 4 to Schedule 13D.
(1)
Calculation based on 103,826,393 shares of Common Stock outstanding as reported in the May 2021 Prospectus Supplement.


CUSIP No. 45329R109
13D
 
1
NAMES OF REPORTING PERSONS
 
 
Advent International GPE VII-D Limited Partnership
 
 
 
 
2
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
(a)
 
(b)
 
 
3
SEC USE ONLY
 
 
 
 
 
 
 
4
SOURCE OF FUNDS (SEE INSTRUCTIONS)
 
 
OO
 
 
 
 
5
CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(D) OR 2(E)
 

 
 
 
 
6
CITIZENSHIP OR PLACE OF ORGANIZATION
 
 
Luxembourg
 
 
 
 
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH
7
SOLE VOTING POWER
 
 
190,193 *
 
 
 
 
8
SHARED VOTING POWER
 
 
0
 
 
 
 
9
SOLE DISPOSITIVE POWER
 
 
190,193 *
 
 
 
 
10
SHARED DISPOSITIVE POWER
 
 
0
 
 
 
 
11
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 
 
190,193 *
 
 
 
 
12
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)
 

 
 
 
 
13
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
 
 
0.18% * (1)
 
 
 
 
14
TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
 
 
PN
 
 
 
 
*
See Item 5 of this Amendment No. 4 to Schedule 13D.
(1)
Calculation based on 103,826,393 shares of Common Stock outstanding as reported in the May 2021 Prospectus Supplement.


CUSIP No. 45329R109
13D
 
1
NAMES OF REPORTING PERSONS
 
 
Advent International GPE VII-F Limited Partnership
 
 
 
 
2
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
(a)
 
(b)
 
 
3
SEC USE ONLY
 
 
 
 
 
 
 
4
SOURCE OF FUNDS (SEE INSTRUCTIONS)
 
 
OO
 
 
 
 
5
CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(D) OR 2(E)
 

 
 
 
 
6
CITIZENSHIP OR PLACE OF ORGANIZATION
 
 
Luxembourg
 
 
 
 
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH
7
SOLE VOTING POWER
 
 
83,981 *
 
 
 
 
8
SHARED VOTING POWER
 
 
0
 
 
 
 
9
SOLE DISPOSITIVE POWER
 
 
83,981 *
 
 
 
 
10
SHARED DISPOSITIVE POWER
 
 
0
 
 
 
 
11
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 
 
83,981 *
 
 
 
 
12
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)
 

 
 
 
 
13
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
 
 
0.08% * (1)
 
 
 
 
14
TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
 
 
PN
 
 
 
 
*
See Item 5 of this Amendment No. 4 to Schedule 13D.
(1)
Calculation based on 103,826,393 shares of Common Stock outstanding as reported in the May 2021 Prospectus Supplement.


CUSIP No. 45329R109
13D
 
1
NAMES OF REPORTING PERSONS
 
 
Advent International GPE VII-G Limited Partnership
 
 
 
 
2
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
(a)
 
(b)
 
 
3
SEC USE ONLY
 
 
 
 
 
 
 
4
SOURCE OF FUNDS (SEE INSTRUCTIONS)
 
 
OO
 
 
 
 
5
CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(D) OR 2(E)
 

 
 
 
 
6
CITIZENSHIP OR PLACE OF ORGANIZATION
 
 
Luxembourg
 
 
 
 
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH
7
SOLE VOTING POWER
 
 
83,981 *
 
 
 
 
8
SHARED VOTING POWER
 
 
0
 
 
 
 
9
SOLE DISPOSITIVE POWER
 
 
83,981 *
 
 
 
 
10
SHARED DISPOSITIVE POWER
 
 
0
 
 
 
 
11
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 
 
83,981 *
 
 
 
 
12
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)
 

 
 
 
 
13
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
 
 
0.08% * (1)
 
 
 
 
14
TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
 
 
PN
 
 
 
 
*
See Item 5 of this Amendment No. 4 to Schedule 13D.
(1)
Calculation based on 103,826,393 shares of Common Stock outstanding as reported in the May 2021 Prospectus Supplement.


CUSIP No. 45329R109
13D
 
1
NAMES OF REPORTING PERSONS
 
 
Advent International GPE VII-A Limited Partnership
 
 
 
 
2
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
(a)
 
(b)
 
 
3
SEC USE ONLY
 
 
 
 
 
 
 
4
SOURCE OF FUNDS (SEE INSTRUCTIONS)
 
 
OO
 
 
 
 
5
CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(D) OR 2(E)
 

 
 
 
 
6
CITIZENSHIP OR PLACE OF ORGANIZATION
 
 
Cayman Islands
 
 
 
 
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH
7
SOLE VOTING POWER
 
 
294,026 *
 
 
 
 
8
SHARED VOTING POWER
 
 
0
 
 
 
 
9
SOLE DISPOSITIVE POWER
 
 
294,026 *
 
 
 
 
10
SHARED DISPOSITIVE POWER
 
 
0
 
 
 
 
11
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 
 
294,026 *
 
 
 
 
12
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)
 

 
 
 
 
13
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
 
 
0.28% * (1)
 
 
 
 
14
TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
 
 
PN
 
 
 
 
*
See Item 5 of this Amendment No. 4 to Schedule 13D.
(1)
Calculation based on 103,826,393 shares of Common Stock outstanding as reported in the May 2021 Prospectus Supplement.


CUSIP No. 45329R109
13D
 
1
NAMES OF REPORTING PERSONS
 
 
Advent International GPE VII-E Limited Partnership
 
 
 
 
2
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
(a)
 
(b)
 
 
3
SEC USE ONLY
 
 
 
 
 
 
 
4
SOURCE OF FUNDS (SEE INSTRUCTIONS)
 
 
OO
 
 
 
 
5
CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(D) OR 2(E)
 

 
 
 
 
6
CITIZENSHIP OR PLACE OF ORGANIZATION
 
 
Cayman Islands
 
 
 
 
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH
7
SOLE VOTING POWER
 
 
652,347 *
 
 
 
 
8
SHARED VOTING POWER
 
 
0
 
 
 
 
9
SOLE DISPOSITIVE POWER
 
 
652,347 *
 
 
 
 
10
SHARED DISPOSITIVE POWER
 
 
0
 
 
 
 
11
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 
 
652,347 *
 
 
 
 
12
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)
 

 
 
 
 
13
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
 
 
0.63% * (1)
 
 
 
 
14
TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
 
 
PN
 
 
 
 
*
See Item 5 of this Amendment No. 4 to Schedule 13D.
(1)
Calculation based on 103,826,393 shares of Common Stock outstanding as reported in the May 2021 Prospectus Supplement.


CUSIP No. 45329R109
13D
 
1
NAMES OF REPORTING PERSONS
 
 
Advent International GPE VII-H Limited Partnership
 
 
 
 
2
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
(a)
 
(b)
 
 
3
SEC USE ONLY
 
 
 
 
 
 
 
4
SOURCE OF FUNDS (SEE INSTRUCTIONS)
 
 
OO
 
 
 
 
5
CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(D) OR 2(E)
 

 
 
 
 
6
CITIZENSHIP OR PLACE OF ORGANIZATION
 
 
Cayman Islands
 
 
 
 
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH
7
SOLE VOTING POWER
 
 
50,990 *
 
 
 
 
8
SHARED VOTING POWER
 
 
0
 
 
 
 
9
SOLE DISPOSITIVE POWER
 
 
50,990 *
 
 
 
 
10
SHARED DISPOSITIVE POWER
 
 
0
 
 
 
 
11
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 
 
50,990 *
 
 
 
 
12
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)
 

 
 
 
 
13
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
 
 
0.05% * (1)
 
 
 
 
14
TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
 
 
PN
 
 
 
 
*
See Item 5 of this Amendment No. 4 to Schedule 13D.
(1)
Calculation based on 103,826,393 shares of Common Stock outstanding as reported in the May 2021 Prospectus Supplement.
 

CUSIP No. 45329R109
13D
 
1
NAMES OF REPORTING PERSONS
 
 
Advent Partners GPE VII Limited Partnership
 
 
 
 
2
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
(a)
 
(b)
 
 
3
SEC USE ONLY
 
 
 
 
 
 
 
4
SOURCE OF FUNDS (SEE INSTRUCTIONS)
 
 
OO
 
 
 
 
5
CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(D) OR 2(E)
 

 
 
 
 
6
CITIZENSHIP OR PLACE OF ORGANIZATION
 
 
DELAWARE
 
 
 
 
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH
7
SOLE VOTING POWER
 
 
1,378 *
 
 
 
 
8
SHARED VOTING POWER
 
 
0
 
 
 
 
9
SOLE DISPOSITIVE POWER
 
 
1,378 *
 
 
 
 
10
SHARED DISPOSITIVE POWER
 
 
0
 
 
 
 
11
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 
 
1,378 *
 
 
 
 
12
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)
 

 
 
 
 
13
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
 
 
Less than 0.01% * (1)
 
 
 
 
14
TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
 
 
PN
 
 
 
 
*
See Item 5 of this Amendment No. 4 to Schedule 13D.
(1)
Calculation based on 103,826,393 shares of Common Stock outstanding as reported in the May 2021 Prospectus Supplement.


CUSIP No. 45329R109
13D
 
1
NAMES OF REPORTING PERSONS
 
 
Advent Partners GPE VII 2014 Limited Partnership
 
 
 
 
2
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
(a)
 
(b)
 
 
3
SEC USE ONLY
 
 
 
 
 
 
 
4
SOURCE OF FUNDS (SEE INSTRUCTIONS)
 
 
OO
 
 
 
 
5
CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(D) OR 2(E)
 

 
 
 
 
6
CITIZENSHIP OR PLACE OF ORGANIZATION
 
 
DELAWARE
 
 
 
 
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH
7
SOLE VOTING POWER
 
 
3,527 *
 
 
 
 
8
SHARED VOTING POWER
 
 
0
 
 
 
 
9
SOLE DISPOSITIVE POWER
 
 
3,527 *
 
 
 
 
10
SHARED DISPOSITIVE POWER
 
 
0
 
 
 
 
11
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 
 
3,527 *
 
 
 
 
12
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)
 

 
 
 
 
13
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
 
 
Less than 0.01% * (1)
 
 
 
 
14
TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
 
 
PN
 
 
 
 
*
See Item 5 of this Amendment No. 4 to Schedule 13D.
(1)
Calculation based on 103,826,393 shares of Common Stock outstanding as reported in the May 2021 Prospectus Supplement.


CUSIP No. 45329R109
13D
 
1
NAMES OF REPORTING PERSONS
 
 
Advent Partners GPE VII-A Limited Partnership
 
 
 
 
2
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
(a)
 
(b)
 
 
3
SEC USE ONLY
 
 
 
 
 
 
 
4
SOURCE OF FUNDS (SEE INSTRUCTIONS)
 
 
OO
 
 
 
 
5
CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(D) OR 2(E)
 

 
 
 
 
6
CITIZENSHIP OR PLACE OF ORGANIZATION
 
 
DELAWARE
 
 
 
 
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH
7
SOLE VOTING POWER
 
 
3,257 *
 
 
 
 
8
SHARED VOTING POWER
 
 
0
 
 
 
 
9
SOLE DISPOSITIVE POWER
 
 
3,257 *
 
 
 
 
10
SHARED DISPOSITIVE POWER
 
 
0
 
 
 
 
11
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 
 
3,257 *
 
 
 
 
12
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)
 

 
 
 
 
13
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
 
 
Less than 0.01% * (1)
 
 
 
 
14
TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
 
 
PN
 
 
 
 
*
See Item 5 of this Amendment No. 4 to Schedule 13D.
(1)
Calculation based on 103,826,393 shares of Common Stock outstanding as reported in the May 2021 Prospectus Supplement.


CUSIP No. 45329R109
13D
 
1
NAMES OF REPORTING PERSONS
 
 
Advent Partners GPE VII-A 2014 Limited Partnership
 
 
 
 
2
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
(a)
 
(b)
 
 
3
SEC USE ONLY
 
 
 
 
 
 
 
4
SOURCE OF FUNDS (SEE INSTRUCTIONS)
 
 
OO
 
 
 
 
5
CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(D) OR 2(E)
 

 
 
 
 
6
CITIZENSHIP OR PLACE OF ORGANIZATION
 
 
DELAWARE
 
 
 
 
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH
7
SOLE VOTING POWER
 
 
9,668 *
 
 
 
 
8
SHARED VOTING POWER
 
 
0
 
 
 
 
9
SOLE DISPOSITIVE POWER
 
 
9,668 *
 
 
 
 
10
SHARED DISPOSITIVE POWER
 
 
0
 
 
 
 
11
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 
 
9,668 *
 
 
 
 
12
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)
 

 
 
 
 
13
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
 
 
0.01% * (1)
 
 
 
 
14
TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
 
 
PN
 
 
 
 
*
See Item 5 of this Amendment No. 4 to Schedule 13D.
(1)
Calculation based on 103,826,393 shares of Common Stock outstanding as reported in the May 2021 Prospectus Supplement.


CUSIP No. 45329R109
13D
 
1
NAMES OF REPORTING PERSONS
 
 
Advent Partners GPE VII Cayman Limited Partnership
 
 
 
 
2
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
(a)
 
(b)
 
 
3
SEC USE ONLY
 
 
 
 
 
 
 
4
SOURCE OF FUNDS (SEE INSTRUCTIONS)
 
 
OO
 
 
 
 
5
CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(D) OR 2(E)
 

 
 
 
 
6
CITIZENSHIP OR PLACE OF ORGANIZATION
 
 
Cayman Islands
 
 
 
 
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH
7
SOLE VOTING POWER
 
 
23,485 *
 
 
 
 
8
SHARED VOTING POWER
 
 
0
 
 
 
 
9
SOLE DISPOSITIVE POWER
 
 
23,485 *
 
 
 
 
10
SHARED DISPOSITIVE POWER
 
 
0
 
 
 
 
11
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 
 
23,485 *
 
 
 
 
12
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)
 

 
 
 
 
13
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
 
 
0.02% * (1)
 
 
 
 
14
TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
 
 
PN
 
 
 
 
*
See Item 5 of this Amendment No. 4 to Schedule 13D.
(1)
Calculation based on 103,826,393 shares of Common Stock outstanding as reported in the May 2021 Prospectus Supplement.


CUSIP No. 45329R109
13D
 
1
NAMES OF REPORTING PERSONS
 
 
Advent Partners GPE VII 2014 Cayman Limited Partnership
 
 
 
 
2
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
(a)
 
(b)
 
 
3
SEC USE ONLY
 
 
 
 
 
 
 
4
SOURCE OF FUNDS (SEE INSTRUCTIONS)
 
 
OO
 
 
 
 
5
CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(D) OR 2(E)
 

 
 
 
 
6
CITIZENSHIP OR PLACE OF ORGANIZATION
 
 
Cayman Islands
 
 
 
 
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH
7
SOLE VOTING POWER
 
 
7,939 *
 
 
 
 
8
SHARED VOTING POWER
 
 
0
 
 
 
 
9
SOLE DISPOSITIVE POWER
 
 
7,939 *
 
 
 
 
10
SHARED DISPOSITIVE POWER
 
 
0
 
 
 
 
11
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 
 
7,939 *
 
 
 
 
12
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)
 

 
 
 
 
13
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
 
 
0.01% * (1)
 
 
 
 
14
TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
 
 
PN
 
 
 
 
*
See Item 5 of this Amendment No. 4 to Schedule 13D.
(1)
Calculation based on 103,826,393 shares of Common Stock outstanding as reported in the May 2021 Prospectus Supplement.


CUSIP No. 45329R109
13D
 
1
NAMES OF REPORTING PERSONS
 
 
Advent Partners GPE VII-A Cayman Limited Partnership
 
 
 
 
2
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
(a)
 
(b)
 
 
3
SEC USE ONLY
 
 
 
 
 
 
 
4
SOURCE OF FUNDS (SEE INSTRUCTIONS)
 
 
OO
 
 
 
 
5
CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(D) OR 2(E)
 

 
 
 
 
6
CITIZENSHIP OR PLACE OF ORGANIZATION
 
 
Cayman Islands
 
 
 
 
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH
7
SOLE VOTING POWER
 
 
6,209 *
 
 
 
 
8
SHARED VOTING POWER
 
 
0
 
 
 
 
9
SOLE DISPOSITIVE POWER
 
 
6,209 *
 
 
 
 
10
SHARED DISPOSITIVE POWER
 
 
0
 
 
 
 
11
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 
 
6,209 *
 
 
 
 
12
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)
 

 
 
 
 
13
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
 
 
0.01% * (1)
 
 
 
 
14
TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
 
 
PN
 
 
 
 
*
See Item 5 of this Amendment No. 4 to Schedule 13D.
(1)
Calculation based on 103,826,393 shares of Common Stock outstanding as reported in the May 2021 Prospectus Supplement.


CUSIP No. 45329R109
13D
 
1
NAMES OF REPORTING PERSONS
 
 
Advent Partners GPE VII-B Cayman Limited Partnership
 
 
 
 
2
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
(a)
 
(b)
 
 
3
SEC USE ONLY
 
 
 
 
 
 
 
4
SOURCE OF FUNDS (SEE INSTRUCTIONS)
 
 
OO
 
 
 
 
5
CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(D) OR 2(E)
 

 
 
 
 
6
CITIZENSHIP OR PLACE OF ORGANIZATION
 
 
Cayman Islands
 
 
 
 
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH
7
SOLE VOTING POWER
 
 
32,194 *
 
 
 
 
8
SHARED VOTING POWER
 
 
0
 
 
 
 
9
SOLE DISPOSITIVE POWER
 
 
32,194 *
 
 
 
 
10
SHARED DISPOSITIVE POWER
 
 
0
 
 
 
 
11
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 
 
32,194 *
 
 
 
 
12
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)
 

 
 
 
 
13
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
 
 
0.03% * (1)
 
 
 
 
14
TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
 
 
PN
 
 
 
 
*
See Item 5 of this Amendment No. 4 to Schedule 13D.
(1)
Calculation based on 103,826,393 shares of Common Stock outstanding as reported in the May 2021 Prospectus Supplement.


CUSIP No. 45329R109
13D
 
1
NAMES OF REPORTING PERSONS
 
 
Advent Partners GPE VII-A 2014 Cayman Limited Partnership
 
 
 
 
2
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
(a)
 
(b)
 
 
3
SEC USE ONLY
 
 
 
 
 
 
 
4
SOURCE OF FUNDS (SEE INSTRUCTIONS)
 
 
OO
 
 
 
 
5
CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(D) OR 2(E)
 

 
 
 
 
6
CITIZENSHIP OR PLACE OF ORGANIZATION
 
 
Cayman Islands
 
 
 
 
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH
7
SOLE VOTING POWER
 
 
5,602 *
 
 
 
 
8
SHARED VOTING POWER
 
 
0
 
 
 
 
9
SOLE DISPOSITIVE POWER
 
 
5,602 *
 
 
 
 
10
SHARED DISPOSITIVE POWER
 
 
0
 
 
 
 
11
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 
 
5,602 *
 
 
 
 
12
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)
 

 
 
 
 
13
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
 
 
0.01% * (1)
 
 
 
 
14
TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
 
 
PN
 
 
 
 
*
See Item 5 of this Amendment No. 4 to Schedule 13D.
(1)
Calculation based on 103,826,393 shares of Common Stock outstanding as reported in the May 2021 Prospectus Supplement.


This Amendment No. 4 (“Amendment No. 4”) amends and supplements the statement on Schedule 13D originally filed by the Reporting Persons on August 10, 2017 (as amended by Amendment No. 1 to Schedule 13D filed on September 22, 2020 (“Amendment No. 1”), as further amended by Amendment No. 2 to Schedule 13D filed on December 7, 2020 (“Amendment No. 2”), as further amended by Amendment No. 3 to Schedule 13D filed on March 5, 2021 (“Amendment No. 3”), the “Schedule 13D”). Unless otherwise indicated, each capitalized term used but not defined in this Amendment No. 4 shall have the meaning assigned to such term in the Schedule 13D.

Item 1.
Security and Issuer

Item 1 of this Schedule 13D is amended and restated as follows:

This Schedule 13D relates to the Reporting Persons’ (as defined in Item 2) beneficial ownership interest in the Class A common stock, par value $0.01 per share (the “Common Stock”), of Syneos Health, Inc. (the “Issuer”). The address of the principal executive office of the Issuer is 1030 Sync Street, Morrisville, North Carolina 27560-5468.

Item 4.
Purpose of Transaction

Item 4 of the Schedule 13D is supplemented as follows:

On May 6, 2021, Double Eagle Investor Holdings, L.P. (“Double Eagle Investor Holdings”) and Advent International GPE VIII-C Limited Partnership (“GPE VIII-C” and, together with Double Eagle Investor Holdings, the “Advent Funds”) sold to BofA Securities, Inc. (the “May 2021 Underwriter”) an aggregate of 4,360,399 shares of Common Stock for $81.04 per share (the “May 2021 Offering”) pursuant to that certain Underwriting Agreement, dated May 3, 2021 (the “May 2021 Underwriting Agreement”), by and among the Double Eagle Investor Holdings and GPE VIII-C, the Issuer and the May 2021 Underwriter and other selling stockholders named therein, as set forth in the table below. In connection with the May 2021 Offering, the Advent Funds entered into customary “lock-up” agreements with the May 2021 Underwriter, dated May 3, 2021 (the “May 2021 Lock-up Agreements”), pursuant to which the Advent Funds generally agreed, subject to certain exceptions, not to sell, transfer, or otherwise dispose of any shares of Common Stock or securities convertible into, or exchangeable or exercisable for, shares of Common Stock, for 30-days after the date of the final prospectus relating to the May 2021 Offering without prior written consent from the May 2021 Underwriter.

In connection with the May 2021 Offering, on May 6, 2021, the Advent Funds sold an aggregate of 216,666 shares of Common Stock for $81.04 per share in a private sale to the Company (the “May 2020 Private Sale”) pursuant to the Stock Repurchase Agreement, dated as of April 30, 2021 (the “April 2021 Repurchase Agreement”), by and between the Advent Selling Stockholders, the Company and certain other stockholders, as set forth in the table below.
 

Seller (Reporting Person)
May 2021
Offering
May 2021
Private Sale
GPE VIII-C
64,792
3,702
Double Eagle Investor Holdings
3,726,860
212,964
Total:
3,791,652
216,666
     
Shares sold through Double Eagle Investor Holdings:
   
Advent International GPE VIII Limited Partnership
120,104
6,863
Advent International GPE VIII-B Limited Partnership
397,835
22,734
Advent International GPE VIII-B-1 Limited Partnership
141,171
8,067
Advent International GPE VIII-B-2 Limited Partnership
105,256
6,016
Advent International GPE VIII-B-3 Limited Partnership
164,360
9,392
Advent International GPE VIII-D Limited Partnership
55,411
3,166
Advent International GPE VIII-F Limited Partnership
16,422
938
Advent International GPE VIII-H Limited Partnership
145,482
8,314
Advent International GPE VIII-I Limited Partnership
135,283
7,730
Advent International GPE VIII-J Limited Partnership
132,943
7,597
Advent International GPE VIII-A Limited Partnership
281,720
16,098
Advent International GPE VIII-E Limited Partnership
61,713
3,526
Advent International GPE VIII-G Limited Partnership
104,668
5,981
Advent International GPE VIII-K Limited Partnership
57,603
3,932
Advent International GPE VIII-L Limited Partnership
56,689
3,239
Advent Partners GPE VIII Cayman Limited Partnership
27,679
1,582
Advent Partners GPE VIII-A Cayman Limited Partnership
3,685
211
Advent Partners GPE VIII-B Cayman Limited Partnership
47,354
2,706
Advent Partners GPE VIII Limited Partnership
4,645
265
Advent Partners GPE VIII-A Limited Partnership
5,767
330
Advent International GPE VII Limited Partnership
178,272
10,187
Advent International GPE VII-B Limited Partnership
508,241
29,039
Advent International GPE VII-C Limited Partnership
161,513
9,229
Advent International GPE VII-D Limited Partnership
106,735
6,099
Advent International GPE VII-F Limited Partnership
47,130
2,694
Advent International GPE VII-G Limited Partnership
47,130
2,694
Advent International GPE VII-A Limited Partnership
161,513
9,429
Advent International GPE VII-E Limited Partnership
366,092
20,919
Advent International GPE VII-H Limited Partnership
28,615
1,636
Advent Partners GPE VII Limited Partnership
773
45
Advent Partners GPE VII 2014 Limited Partnership
1,980
113
Advent Partners GPE VII-A Limited Partnership
1,828
104
Advent Partners GPE VII-A 2014 Limited Partnership
5,426
310
Advent Partners GPE VII Cayman Limited Partnership
13,180
753
Advent Partners GPE VII 2014 Cayman Limited Partnership
4,455
255
Advent Partners GPE VII-A Cayman Limited Partnership
3,484
199
Advent Partners GPE VII-B Cayman Limited Partnership
18,067
1,033
Advent Partners GPE VII-A 2014 Cayman Limited Partnership
3,144
179
Total:
4,360,399
216,666

All of the Common Stock that is beneficially owned by the Reporting Persons was acquired for investment purposes. The Reporting Persons may sell all or a portion of the shares of Common Stock now owned in the open market, in privately negotiated transactions or otherwise, at any time and from time to time and at such prices as the Reporting Persons deem advisable. The Reporting Persons intend to review their investment in the Issuer continually. Depending upon the results of such review and other factors that the Reporting Persons deem relevant to an investment in the Issuer, the Reporting Persons may take or propose to take, alone or in conjunction with others including the Issuer, other actions intended to increase or decrease the Reporting Persons’ investment in the Issuer or the value of their investment in the Issuer, which could include one or more of the transactions or actions referred to in paragraphs (a) through (j) of Item 4 of Schedule 13D.


Tom Allen and John Maldonado, each employees of Advent, serve as directors of the Issuer and were appointed to the Issuer’s board of directors as contemplated by the Stockholders’ Agreement.

The foregoing descriptions of the May 2021 Underwriting Agreement, the May 2021 Lock-up Agreements and the April 2021 Repurchase Agreement do not purport to be complete and are qualified in their entirety by reference to the full text of the May 2021 Underwriting Agreement, a copy of which is attached as Exhibit 99.5, a form of the Lock-up Agreement attached as Annex IV to the May 2021 Underwriting Agreement, and the April 2021 Repurchase Agreement, a copy of which is attached as Exhibit 99.6, all of which are incorporated by reference herein.

Item 5.
Interest in Securities of the Issuer

Item 5 of the Schedule 13D is supplemented as follows:

(a)(b) The responses of the Reporting Persons to Rows (7) through (13) of the cover pages of this Amendment No. 4 as of the close of business on May 6, 2021, are incorporated by reference herein. After giving effect to the sales of the shares of Common Stock described in Item 4 of this Amendment No. 4, as of the close of business on May 6, 2021, the Reporting Persons beneficially owned, in the aggregate, 6,756,431 shares of Common Stock, which represents approximately 6.51% of the Common Stock issued and outstanding.

The following table sets forth the aggregate number and percentage of the Common Stock beneficially owned by each Reporting Person as of the close of business on May 6, 2021, after giving effect to the May 2021 Offering and the May 2021 Private Sale described in Item 4 of this Amendment No. 4, calculated in accordance with Rule 13d-3 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”). The percentage of Common Stock owned was calculated based on 103,826,393 shares of Common Stock outstanding following the completion of the transactions contemplated by the April 2021 Repurchase Agreement, as reported in the May 2021 Prospectus Supplement.

Reporting Person
Number of Shares Beneficially Owned
Percentage of Common Stock
Advent International Corporation
6,756,431
6.51%
GPE VIII-C
115,455
0.11%
Double Eagle Investor Holdings
6,640,976
6.40%
Double Eagle GP
6,640,976
6.40%
Advent International GPE VII, LLC
2,959,897
2.85%
GPE VII GP Limited Partnership(2)
997,363
0.96%
GPE VII GP S.à r.l.(2)
1,869,275
1.80%
Advent International GPE VIII, LLC
3,796,534
3.66%
GPE VIII GP Limited Partnership(3)
1,002,141
0.97%
GPE VIII GP S.à r.l.(3)
2,635,570
2.54%
AP GPE VIII GP Limited Partnership(3)
158,823
0.15%
Advent International GPE VIII Limited Partnership
214,017
0.21%
 

Reporting Person
Number of Shares Beneficially Owned
Percentage of Common Stock
Advent International GPE VIII-B Limited Partnership
708,911
0.68%
Advent International GPE VIII-B-1 Limited Partnership
251,556
0.24%
Advent International GPE VIII-B-2 Limited Partnership
187,558
0.18%
Advent International GPE VIII-B-3 Limited Partnership
292,878
0.28%
Advent International GPE VIII-D Limited Partnership
98,739
0.10%
Advent International GPE VIII-F Limited Partnership
29,262
0.03%
Advent International GPE VIII-H Limited Partnership
259,237
0.25%
Advent International GPE VIII-I Limited Partnership
241,063
0.23%
Advent International GPE VIII-J Limited Partnership
236,894
0.23%
Advent International GPE VIII-A Limited Partnership
502,003
0.48%
Advent International GPE VIII-E Limited Partnership
109,968
0.11%
Advent International GPE VIII-G Limited Partnership
186,511
0.18%
Advent International GPE VIII-K Limited Partnership
102,644
0.10%
Advent International GPE VIII-L Limited Partnership
101,015
0.10%
Advent Partners GPE VIII Cayman Limited Partnership
49,322
0.05%
Advent Partners GPE VIII-A Cayman Limited Partnership
6,567
0.01%
Advent Partners GPE VIII-B Cayman Limited Partnership
84,381
0.08%
Advent Partners GPE VIII Limited Partnership
8,277
0.01%
Advent Partners GPE VIII-A Limited Partnership
10,276
0.01%
Advent International GPE VII Limited Partnership
317,668
0.31%
Advent International GPE VII-B Limited Partnership
905,648
0.87%
Advent International GPE VII-C Limited Partnership
287,804
0.27%
Advent International GPE VII-D Limited Partnership
190,193
0.18%
Advent International GPE VII-F Limited Partnership
83,981
0.08%
Advent International GPE VII-G Limited Partnership
83,981
0.08%
Advent International GPE VII-A Limited Partnership
294,026
0.28%
Advent International GPE VII-E Limited Partnership
652,347
0.63%
Advent International GPE VII-H Limited Partnership
50,990
0.05%
Advent Partners GPE VII Limited Partnership(2)
1,378
Less than 0.01%
Advent Partners GPE VII 2014 Limited Partnership(2)
3,527
Less than 0.01%
Advent Partners GPE VII-A Limited Partnership(2)
3,257
Less than 0.01%
Advent Partners GPE VII-A 2014 Limited Partnership(2)
9,668
0.01%
 

Reporting Person
Number of Shares Beneficially Owned
Percentage of Common Stock
Advent Partners GPE VII Cayman Limited Partnership(2)
23,485
0.02%
Advent Partners GPE VII 2014 Cayman Limited Partnership(2)
7,939
0.01%
Advent Partners GPE VII-A Cayman Limited Partnership(2)
6,209
0.01%
Advent Partners GPE VII-B Cayman Limited Partnership(2)
32,194
0.03%
Advent Partners GPE VII-A 2014 Cayman Limited Partnership(2)
5,602
0.01%

(1) Advent is the Sole Member of Double Eagle GP, which in turn is the General Partner of Double Eagle Investor Holdings. As such, Advent has the sole power to vote and dispose of the securities beneficially owned by the Advent Sub Funds. The beneficial ownership of AIC and Double Eagle Investor Holdings derive such power.

(2) Advent is the Manager of Advent International GPE VII, LLC, which in turn is the Manager of the indicated Reporting Persons. As such, Advent has the sole power to vote and dispose of the securities beneficially owned by Advent Partners GPE VII Limited Partnership, Advent Partners GPE VII 2014 Limited Partnership, Advent Partners GPE VII-A Limited Partnership, Advent Partners GPE VII-A 2014 Limited Partnership, Advent Partners GPE VII Cayman Limited Partnership, Advent Partners GPE VII 2014 Cayman Limited Partnership, Advent Partners GPE VII-A Cayman Limited Partnership, Advent Partners GPE VII-B Cayman Limited Partnership, Advent Partners GPE VII-A 2014 Cayman Limited Partnership, Advent International GPE VII-A Limited Partnership, Advent International GPE VII-E Limited Partnership, Advent International GPE VII-H Limited Partnership, Advent International GPE VII Limited Partnership, Advent International GPE VII-B Limited Partnership, Advent International GPE VII-C Limited Partnership, Advent International GPE VII-D Limited Partnership, Advent International GPE VII-F Limited Partnership, and Advent International GPE VII-G Limited Partnership. The beneficial ownership of Advent and Advent International GPE VII, LLC derive such power.

(3) Advent is the Manager of Advent International GPE VIII, LLC, which in turn is the Manager of the indicated Reporting Persons. As such, Advent has the sole power to vote and dispose of the securities beneficially owned by Advent International GPE VIII Limited Partnership, Advent International GPE VIII-B Limited Partnership, Advent International GPE VIII-B-1 Limited Partnership, Advent International GPE VIII-B-2 Limited Partnership, Advent International GPE VIII-B-3 Limited Partnership, Advent International GPE VIII-D Limited Partnership, Advent International GPE VIII-F Limited Partnership, Advent International GPE VIII-H Limited Partnership, Advent International GPE VIII-I Limited Partnership, Advent International GPE VIII-J Limited Partnership, and Advent International GPE VIII-C Limited Partnership, Advent International GPE VIII-A Limited Partnership, Advent International GPE VIII-E Limited Partnership, Advent International GPE VIII-G Limited Partnership, Advent International GPE VIII-K Limited Partnership, Advent International GPE VIII-L Limited Partnership, Advent Partners GPE VIII Cayman Limited Partnership, Advent Partners GPE VIII-A Cayman Limited Partnership, Advent Partners GPE VIII-B Cayman Limited Partnership, Advent Partners GPE VIII Limited Partnership, and Advent Partners GPE VIII-A Limited Partnership. The beneficial ownership of Advent and Advent International GPE VIII, LLC derive such power.

On account of the Advent Stockholders’ Agreement, the Reporting Persons may be deemed to constitute a “group” (within the meaning of Section 13(d)(3) of the Exchange Act. Each Reporting Person expressly disclaims beneficial ownership of any shares of Common Stock held by any other Reporting Person or its affiliates or any other person solely by virtue of the existence of the Advent Stockholders’ Agreement.


To the Reporting Persons’ knowledge, none of the directors or executive officers of the Reporting Persons listed on Schedule A to this Amendment No. 4 beneficially owned shares of Common Stock as of the close of business on May 6, 2021.

(c) Except as disclosed in Item 4 of this Amendment No. 4, which is incorporated herein by reference, no Reporting Person has effected any transactions in the Common Stock during the past 60 days, and to the Reporting Persons’ knowledge, none of the directors or executive officers of the Reporting Persons listed on Schedule A to this Amendment No. 4 effected any transactions in the Common Stock during within the past 60 days.

Item 6.
Contracts, Arrangements, Understandings or Relationships with Respect to Securities of the Issuer

Item 6 of the Schedule 13D is hereby supplemented as follows:

The information set forth under Item 4 of this Amendment No. 4 is incorporated herein by reference.

Item 7.
Material to Be Filed as Exhibits

 
Underwriting Agreement, dated May 3, 2021, by and among the Advent Funds, certain other Selling Stockholders, BofA Securities, Inc. and the Issuer (incorporated by reference to Exhibit 1.1 to the Issuer’s Current Report on Form 8-K, filed with the SEC on May 5, 2021).
 
Share Repurchase Agreement, dated April 30, 2021, by and between the Advent Funds, certain other stockholders and the Issuer (incorporated by reference to Exhibit 10.1 to the Issuer’s Current Report on Form 8-K, filed with the SEC on May 5, 2021).

Joint Filing Agreement.
 
* Filed herewith


Signature

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

Date: May 10, 2021
Advent International Corporation
       
  /s/ Michael Ristaino  
 
Name:
Michael Ristaino
 
 
Title:
Vice President of Finance - Fund Administration
       
Date: May 10, 2021
Double Eagle Investor Holdings, L.P.
       
 
By: Double Eagle GP, LLC, its General Partner
 
By: Advent International Corporation, its Sole Member
       
  /s/ Michael Ristaino  
 
Name:
Michael Ristaino
 
 
Title:
Vice President of Finance - Fund Administration
       
Date: May 10, 2021
Double Eagle GP, LLC
       
 
By: Advent International Corporation, its Sole Member
       
  /s/ Michael Ristaino  
 
Name:
Michael Ristaino
 
 
Title:
Vice President of Finance - Fund Administration
       
Date: May 10, 2021
Advent International GPE VII, LLC
 
Advent International GPE VIII, LLC
       
 
By: Advent International Corporation, its Manager
       
  /s/
Michael Ristaino  
 
Name:
Michael Ristaino
 
 
Title:
Vice President of Finance - Fund Administration
 

Date: May 10, 2021
GPE VIII GP S.à r.l.
 
GPE VIII GP Limited Partnership
 
AP GPE VIII GP Limited Partnership
       
 
By: Advent International GPE VIII, LLC, its General Partner
 
By: Advent International Corporation, its Manager
       
  /s/ Michael Ristaino  
 
Name:
Michael Ristaino
 
 
Title:
Vice President of Finance - Fund Administration
       
Date: May 10, 2021
GPE VII GP S.à r.l.
 
GPE VII GP Limited Partnership
       
 
By: Advent International GPE VII, LLC, its General Partner
 
By: Advent International Corporation, its Manager
       
  /s/ Michael Ristaino  
 
Name:
Michael Ristaino
 
 
Title:
Vice President of Finance - Fund Administration
       
Date: May 10, 2021
Advent International GPE VIII Limited Partnership
 
Advent International GPE VIII-B Limited Partnership
 
Advent International GPE VIII-B-1 Limited Partnership
 
Advent International GPE VIII-B-2 Limited Partnership
 
Advent International GPE VIII-B-3 Limited Partnership
 
Advent International GPE VIII-D Limited Partnership
 
Advent International GPE VIII-F Limited Partnership
 
Advent International GPE VIII-H Limited Partnership
 
Advent International GPE VIII-I Limited Partnership
 
Advent International GPE VIII-J Limited Partnership
 
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
       
  /s/ Michael Ristaino  
 
Name:
Michael Ristaino
 
 
Title:
Vice President of Finance - Fund Administration
 

Date: May 10, 2021
Advent International GPE VIII-A Limited Partnership
 
Advent International GPE VIII-E Limited Partnership
 
Advent International GPE VIII-G Limited Partnership
 
Advent International GPE VIII-K Limited Partnership
 
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
       
  /s/ Michael Ristaino  
 
Name:
Michael Ristaino
 
 
Title:
Vice President of Finance - Fund Administration
       
Date: May 10, 2021
Advent Partners GPE VIII Cayman Limited Partnership
 
Advent Partners GPE VIII-B Cayman Limited Partnership
 
Advent Partners GPE VIII Limited Partnership
 
Advent Partners GPE VIII-A Limited Partnership
 
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
       
  /s/ Michael Ristaino  
 
Name:
Michael Ristaino
 
 
Title:
Vice President of Finance - Fund Administration
       
Date: May 10, 2021
Advent International GPE VII Limited Partnership
 
Advent International GPE VII-B Limited Partnership
 
Advent International GPE VII-C Limited Partnership
 
Advent International GPE VII-D Limited Partnership
 
Advent International GPE VII-F Limited Partnership
 
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
       
  /s/ Michael Ristaino  
 
Name:
Michael Ristaino
 
 
Title:
Vice President of Finance - Fund Administration
 

Date: May 10, 2021
Advent International GPE VII-A Limited Partnership
 
Advent International GPE VII-E Limited Partnership
 
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
       
  /s/
Michael Ristaino  
 
Name:
Michael Ristaino
 
 
Title:
Vice President of Finance - Fund Administration
       
Date: May 10, 2021
Advent Partners GPE VII Limited Partnership
 
Advent Partners GPE VII 2014 Limited Partnership
 
Advent Partners GPE VII-A Limited Partnership
 
Advent Partners GPE VII-A 2014 Limited Partnership
 
Advent Partners GPE VII Cayman Limited Partnership
 
Advent Partners GPE VII 2014 Cayman Limited Partnership
 
Advent Partners GPE VII-A Cayman Limited Partnership
 
Advent Partners GPE VII-B Cayman Limited Partnership
 
Advent Partners GPE VII-A 2014 Cayman Limited Partnership
       
 
By: Advent International GPE VII, LLC, its General Partner
 
By: Advent International Corporation, its Manager
       
  /s/
Michael Ristaino  
 
Name:
Michael Ristaino
 
 
Title:
Vice President of Finance - Fund Administration
 

SCHEDULE A

The name and present principal occupation of each executive officer and director of Advent International Corporation is set forth below. The business address of each executive officer and director of Advent International Corporation is c/o Advent International Corporation, Prudential Tower, 800 Boylston Street, Suite 3300, Boston, MA 02199. All of the persons other than James Brocklebank, Patrice Etlin and Jan Janshen listed below are citizens of the United States. Mr. Brocklebank is a citizen of the United Kingdom. Mr. Etlin is a citizen of Brazil. Mr. Janshen is a citizen of Germany.
Name
 
Position with Advent International
Corporation
 
Principal Occupation (if
different)
Thomas H. Lauer
 
Director
   
         
Richard F. Kane
 
Senior Vice President of Operations and Business Development & Managing Director; Assistant Secretary
   
         
Eileen Sivolella
 
Senior Vice President & Managing Director; Chief Financial Officer; Treasurer; Assistant Secretary
   
         
James R. Westra
 
Senior Vice President & Managing Partner; Chief Legal Officer; General Counsel
   
         
Andrew D. Dodge
 
Vice President; Deputy General Counsel; Secretary
   
         
Heather R. Zuzenak
 
Chief Compliance Officer
   
         
Jarlyth H. Gibson
 
Risk Officer; Assistant Treasurer
   
         
James G.A. Brocklebank
 
Senior Vice President & Managing Partner; Executive Officers’ Committee Member
   
         
Patrice Etlin
 
Senior Vice President & Managing Partner; Executive Officers’ Committee Member
   
         
John L. Maldonado
 
Director; Senior Vice President & Managing Partner; Executive Officers’ Committee Member
   
         
Jan Janshen
 
Senior Vice President & Managing Partner; Executive Officers’ Committee Member
   
         
David M. Mussafer
 
Director; Chairman & Managing Partner; Executive Officers’ Committee Member
   
         
David M. McKenna
 
Director
   
         
Steven M. Tadler
 
Director
   
         
John F. Brooke
 
Director
 
Managing Director of Brooke Private Equity Associates (1)
         
Mark Hoffman
 
Director
   
(1) The business address of Brooke Private Equity Associates is 20 Custom House St., Suite 610, Boston, MA 02110.