UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

 

 

SCHEDULE 13D

Amendment No. 1

Under the Securities Exchange Act of 1934

 

 

ATI PHYSICAL THERAPY, INC.

(Name of Issuer)

Class A Common Stock, $0.0001 par value per share

(Title of Class of Securities)

00216W109

(CUSIP Number)

Copy to:

James Westra

General Counsel and Managing Partner

Advent International Corporation

Prudential Tower

800 Boylston Street

Boston, MA 02199-8069

November 24, 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  ☐.

 

 

Note: Schedules filed in paper format shall include a signed original and five copies of the schedule, including all exhibits. See § 240.13d-7(b) for other parties to whom copies are to be sent.

 

 

 

*

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 (“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. 00216W109    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

 

  N/A

  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

 

  0

  8     

  SHARED VOTING POWER

 

  118,662,259

  9     

  SOLE DISPOSITIVE POWER

 

  0

  10     

  SHARED DISPOSITIVE POWER

 

  118,662,259

11    

  AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

 

  118,662,259

12    

  CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES

 

  ☐

13    

  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

 

  57.2%*

14    

  TYPE OF REPORTING PERSON

 

  CO

 

*

Calculation based on 207,282,536 shares of Class A Common Stock of the Issuer outstanding as of November 11, 2021, as reported by the Issuer in its Quarterly Report on Form 10-Q, as filed with the Securities and Exchange Commission on November 17, 2021.


CUSIP No. 00216W109    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

 

  N/A

  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

 

  0

  8     

  SHARED VOTING POWER

 

  115,830,656

  9     

  SOLE DISPOSITIVE POWER

 

  0

  10     

  SHARED DISPOSITIVE POWER

 

  115,830,656

11    

  AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

 

  115,830,656

12    

  CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES

 

  ☐

13    

  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

 

  55.9%*

14    

  TYPE OF REPORTING PERSON

 

  OO

 

*

Calculation based on 207,282,536 shares of Class A Common Stock of the Issuer outstanding as of November 11, 2021, as reported by the Issuer in its Quarterly Report on Form 10-Q, as filed with the Securities and Exchange Commission on November 17, 2021.


CUSIP No. 00216W109    13D

 

  1    

  NAMES OF REPORTING PERSONS

 

  WILCO ACQUISITION, LP

  2    

  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP

  (a)  ☐        (b)  ☒

 

  3    

  SEC USE ONLY

 

  4    

  SOURCE OF FUNDS

 

  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

 

  0

  8     

  SHARED VOTING POWER

 

  2,831,603

  9     

  SOLE DISPOSITIVE POWER

 

  0

  10     

  SHARED DISPOSITIVE POWER

 

  2,831,603

11    

  AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

 

  2,831,603

12    

  CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES

 

  ☐

13    

  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

 

  1.4%

14    

  TYPE OF REPORTING PERSON

 

  PN


CUSIP No. 00216W109    13D

 

  1    

  NAMES OF REPORTING PERSONS

 

  WILCO GP, INC.

  2    

  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP

  (a)  ☐        (b)  ☒

 

  3    

  SEC USE ONLY

 

  4    

  SOURCE OF FUNDS

 

  N/A

  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

 

  0

  8     

  SHARED VOTING POWER

 

  2,831,603

  9     

  SOLE DISPOSITIVE POWER

 

  0

  10     

  SHARED DISPOSITIVE POWER

 

  2,831,603

11    

  AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

 

  2,831,603

12    

  CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES

 

  ☐

13    

  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

 

  1.4%

14    

  TYPE OF REPORTING PERSON

 

  CO


CUSIP No. 00216W109    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

 

  N/A

  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

 

  0

  8     

  SHARED VOTING POWER

 

  11,324,692

  9     

  SOLE DISPOSITIVE POWER

 

  0

  10     

  SHARED DISPOSITIVE POWER

 

  11,324,692

11    

  AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

 

  11,324,692

12    

  CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES

 

  ☐

13    

  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

 

  5.5%*

14    

  TYPE OF REPORTING PERSON

 

  PN

 

*

Calculation based on 207,282,536 shares of Class A Common Stock of the Issuer outstanding as of November 11, 2021, as reported by the Issuer in its Quarterly Report on Form 10-Q, as filed with the Securities and Exchange Commission on November 17, 2021.


CUSIP No. 00216W109    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

 

  N/A

  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

 

  0

  8     

  SHARED VOTING POWER

 

  30,970,377

  9     

  SOLE DISPOSITIVE POWER

 

  0

  10     

  SHARED DISPOSITIVE POWER

 

  30,970,377

11    

  AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

 

  30,970,377

12    

  CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES

 

  ☐

13    

  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

 

  14.9%*

14    

  TYPE OF REPORTING PERSON

 

  PN

 

*

Calculation based on 207,282,536 shares of Class A Common Stock of the Issuer outstanding as of November 11, 2021, as reported by the Issuer in its Quarterly Report on Form 10-Q, as filed with the Securities and Exchange Commission on November 17, 2021.


CUSIP No. 00216W109    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

 

  N/A

  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

 

  0

  8     

  SHARED VOTING POWER

 

  9,845,475

  9     

  SOLE DISPOSITIVE POWER

 

  0

  10     

  SHARED DISPOSITIVE POWER

 

  9,845,475

11    

  AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

 

  9,845,475

12    

  CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES

 

  ☐

13    

  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

 

  4.7%*

14    

  TYPE OF REPORTING PERSON

 

  PN

 

*

Calculation based on 207,282,536 shares of Class A Common Stock of the Issuer outstanding as of November 11, 2021, as reported by the Issuer in its Quarterly Report on Form 10-Q, as filed with the Securities and Exchange Commission on November 17, 2021.


CUSIP No. 00216W109    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

 

  N/A

  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

 

  0

  8     

  SHARED VOTING POWER

 

  6,777,137

  9     

  SOLE DISPOSITIVE POWER

 

  0

  10     

  SHARED DISPOSITIVE POWER

 

  6,777,137

11    

  AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

 

  6,777,137

12    

  CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES

 

  ☐

13    

  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

 

  3.3%*

14    

  TYPE OF REPORTING PERSON

 

  PN

 

*

Calculation based on 207,282,536 shares of Class A Common Stock of the Issuer outstanding as of November 11, 2021, as reported by the Issuer in its Quarterly Report on Form 10-Q, as filed with the Securities and Exchange Commission on November 17, 2021.


CUSIP No. 00216W109    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

 

  N/A

  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

 

  0

  8     

  SHARED VOTING POWER

 

  2,873,508

  9     

  SOLE DISPOSITIVE POWER

 

  0

  10     

  SHARED DISPOSITIVE POWER

 

  2,873,508

11    

  AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

 

  2,873,508

12    

  CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES

 

  ☐

13    

  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

 

  1.4%*

14    

  TYPE OF REPORTING PERSON

 

  PN

 

*

Calculation based on 207,282,536 shares of Class A Common Stock of the Issuer outstanding as of November 11, 2021, as reported by the Issuer in its Quarterly Report on Form 10-Q, as filed with the Securities and Exchange Commission on November 17, 2021.


CUSIP No. 00216W109    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

 

  N/A

  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

 

  0

  8     

  SHARED VOTING POWER

 

  2,873,508

  9     

  SOLE DISPOSITIVE POWER

 

  0

  10     

  SHARED DISPOSITIVE POWER

 

  2,873,508

11    

  AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

 

  2,873,508

12    

  CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES

 

  ☐

13    

  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

 

  1.4%*

14    

  TYPE OF REPORTING PERSON

 

  PN

 

*

Calculation based on 207,282,536 shares of Class A Common Stock of the Issuer outstanding as of November 11, 2021, as reported by the Issuer in its Quarterly Report on Form 10-Q, as filed with the Securities and Exchange Commission on November 17, 2021.


CUSIP No. 00216W109    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

 

  N/A

  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

 

  0

  8     

  SHARED VOTING POWER

 

  64,664,697

  9     

  SOLE DISPOSITIVE POWER

 

  0

  10     

  SHARED DISPOSITIVE POWER

 

  64,664,697

11    

  AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

 

  64,664,697

12    

  CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES

 

  ☐

13    

  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

 

  31.2%*

14    

  TYPE OF REPORTING PERSON

 

  CO

 

*

Calculation based on 207,282,536 shares of Class A Common Stock of the Issuer outstanding as of November 11, 2021, as reported by the Issuer in its Quarterly Report on Form 10-Q, as filed with the Securities and Exchange Commission on November 17, 2021.


CUSIP No. 00216W109    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

 

  N/A

  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

 

  0

  8     

  SHARED VOTING POWER

 

  10,481,756

  9     

  SOLE DISPOSITIVE POWER

 

  0

  10     

  SHARED DISPOSITIVE POWER

 

  10,481,756

11    

  AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

 

  10,481,756

12    

  CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES

 

  ☐

13    

  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

 

  5.1%*

14    

  TYPE OF REPORTING PERSON

 

  PN

 

*

Calculation based on 207,282,536 shares of Class A Common Stock of the Issuer outstanding as of November 11, 2021, as reported by the Issuer in its Quarterly Report on Form 10-Q, as filed with the Securities and Exchange Commission on November 17, 2021.


CUSIP No. 00216W109    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

 

  N/A

  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

 

  0

  8     

  SHARED VOTING POWER

 

  22,316,207

  9     

  SOLE DISPOSITIVE POWER

 

  0

  10     

  SHARED DISPOSITIVE POWER

 

  22,316,207

11    

  AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

 

  22,316,207

12    

  CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES

 

  ☐

13    

  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

 

  10.8%*

14    

  TYPE OF REPORTING PERSON

 

  PN

 

*

Calculation based on 207,282,536 shares of Class A Common Stock of the Issuer outstanding as of November 11, 2021, as reported by the Issuer in its Quarterly Report on Form 10-Q, as filed with the Securities and Exchange Commission on November 17, 2021.


CUSIP No. 00216W109    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

 

  N/A

  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

 

  0

  8     

  SHARED VOTING POWER

 

  1,743,883

  9     

  SOLE DISPOSITIVE POWER

 

  0

  10     

  SHARED DISPOSITIVE POWER

 

  1,743,883

11    

  AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

 

  1,743,883

12    

  CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES

 

  ☐

13    

  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

 

  0.8%*

14    

  TYPE OF REPORTING PERSON

 

  PN

 

*

Calculation based on 207,282,536 shares of Class A Common Stock of the Issuer outstanding as of November 11, 2021, as reported by the Issuer in its Quarterly Report on Form 10-Q, as filed with the Securities and Exchange Commission on November 17, 2021.


CUSIP No. 00216W109    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

 

  N/A

  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

 

  0

  8     

  SHARED VOTING POWER

 

  34,541,846

  9     

  SOLE DISPOSITIVE POWER

 

  0

  10     

  SHARED DISPOSITIVE POWER

 

  34,541,846

11    

  AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

 

  34,541,846

12    

  CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES

 

  ☐

13    

  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

 

  16.7%*

14    

  TYPE OF REPORTING PERSON

 

  PN

 

*

Calculation based on 207,282,536 shares of Class A Common Stock of the Issuer outstanding as of November 11, 2021, as reported by the Issuer in its Quarterly Report on Form 10-Q, as filed with the Securities and Exchange Commission on November 17, 2021.


CUSIP No. 00216W109    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

 

  N/A

  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

 

  0

  8     

  SHARED VOTING POWER

 

  65,045

  9     

  SOLE DISPOSITIVE POWER

 

  0

  10     

  SHARED DISPOSITIVE POWER

 

  65,045

11    

  AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

 

  65,045

12    

  CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES

 

  ☐

13    

  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

 

  Less than 0.1%*

14    

  TYPE OF REPORTING PERSON

 

  PN

 

*

Calculation based on 207,282,536 shares of Class A Common Stock of the Issuer outstanding as of November 11, 2021, as reported by the Issuer in its Quarterly Report on Form 10-Q, as filed with the Securities and Exchange Commission on November 17, 2021.


CUSIP No. 00216W109    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

 

  N/A

  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

 

  0

  8     

  SHARED VOTING POWER

 

  155,782

  9     

  SOLE DISPOSITIVE POWER

 

  0

  10     

  SHARED DISPOSITIVE POWER

 

  155,782

11    

  AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

 

  155,782

12    

  CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES

 

  ☐

13    

  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

 

  0.1%*

14    

  TYPE OF REPORTING PERSON

 

  PN

 

*

Calculation based on 207,282,536 shares of Class A Common Stock of the Issuer outstanding as of November 11, 2021, as reported by the Issuer in its Quarterly Report on Form 10-Q, as filed with the Securities and Exchange Commission on November 17, 2021.


CUSIP No. 00216W109    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

 

  N/A

  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

 

  0

  8     

  SHARED VOTING POWER

 

  179,333

  9     

  SOLE DISPOSITIVE POWER

 

  0

  10     

  SHARED DISPOSITIVE POWER

 

  179,333

11    

  AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

 

  179,333

12    

  CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES

 

  ☐

13    

  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

 

  0.1%*

14    

  TYPE OF REPORTING PERSON

 

  PN

 

*

Calculation based on 207,282,536 shares of Class A Common Stock of the Issuer outstanding as of November 11, 2021, as reported by the Issuer in its Quarterly Report on Form 10-Q, as filed with the Securities and Exchange Commission on November 17, 2021.


CUSIP No. 00216W109    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

 

  N/A

  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

 

  0

  8     

  SHARED VOTING POWER

 

  109,903

  9     

  SOLE DISPOSITIVE POWER

 

  0

  10     

  SHARED DISPOSITIVE POWER

 

  109,903

11    

  AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

 

  109,903

12    

  CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES

 

  ☐

13    

  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

 

  0.1%*

14    

  TYPE OF REPORTING PERSON

 

  PN

 

*

Calculation based on 207,282,536 shares of Class A Common Stock of the Issuer outstanding as of November 11, 2021, as reported by the Issuer in its Quarterly Report on Form 10-Q, as filed with the Securities and Exchange Commission on November 17, 2021.


CUSIP No. 00216W109    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

 

  N/A

  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

 

  0

  8     

  SHARED VOTING POWER

 

  806,132

  9     

  SOLE DISPOSITIVE POWER

 

  0

  10     

  SHARED DISPOSITIVE POWER

 

  806,132

11    

  AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

 

  806,132

12    

  CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES

 

  ☐

13    

  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

 

  0.4%*

14    

  TYPE OF REPORTING PERSON

 

  PN

 

*

Calculation based on 207,282,536 shares of Class A Common Stock of the Issuer outstanding as of November 11, 2021, as reported by the Issuer in its Quarterly Report on Form 10-Q, as filed with the Securities and Exchange Commission on November 17, 2021.


CUSIP No. 00216W109    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

 

  N/A

  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

 

  0

  8     

  SHARED VOTING POWER

 

  1,063,662

  9     

  SOLE DISPOSITIVE POWER

 

  0

  10     

  SHARED DISPOSITIVE POWER

 

  1,063,662

11    

  AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

 

  1,063,662

12    

  CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES

 

  ☐

13    

  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

 

  0.5%*

14    

  TYPE OF REPORTING PERSON

 

  PN

 

*

Calculation based on 207,282,536 shares of Class A Common Stock of the Issuer outstanding as of November 11, 2021, as reported by the Issuer in its Quarterly Report on Form 10-Q, as filed with the Securities and Exchange Commission on November 17, 2021.


CUSIP No. 00216W109    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

 

  N/A

  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

 

  0

  8     

  SHARED VOTING POWER

 

  45,266

  9     

  SOLE DISPOSITIVE POWER

 

  0

  10     

  SHARED DISPOSITIVE POWER

 

  45,266

11    

  AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

 

  45,266

12    

  CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES

 

  ☐

13    

  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

 

  Less than 0.1%*

14    

  TYPE OF REPORTING PERSON

 

  PN

 

*

Calculation based on 207,282,536 shares of Class A Common Stock of the Issuer outstanding as of November 11, 2021, as reported by the Issuer in its Quarterly Report on Form 10-Q, as filed with the Securities and Exchange Commission on November 17, 2021.


CUSIP No. 00216W109    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

 

  N/A

  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

 

  0

  8     

  SHARED VOTING POWER

 

  212,875

  9     

  SOLE DISPOSITIVE POWER

 

  0

  10     

  SHARED DISPOSITIVE POWER

 

  212,875

11    

  AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

 

  212,875

12    

  CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES

 

  ☐

13    

  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

 

  0.1%*

14    

  TYPE OF REPORTING PERSON

 

  PN

 

*

Calculation based on 207,282,536 shares of Class A Common Stock of the Issuer outstanding as of November 11, 2021, as reported by the Issuer in its Quarterly Report on Form 10-Q, as filed with the Securities and Exchange Commission on November 17, 2021.


CUSIP No. 00216W109    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

 

  N/A

  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

 

  0

  8     

  SHARED VOTING POWER

 

  107,151

  9     

  SOLE DISPOSITIVE POWER

 

  0

  10     

  SHARED DISPOSITIVE POWER

 

  107,151

11    

  AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

 

  107,151

12    

  CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES

 

  ☐

13    

  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

 

  0.1%*

14    

  TYPE OF REPORTING PERSON

 

  PN

 

*

Calculation based on 207,282,536 shares of Class A Common Stock of the Issuer outstanding as of November 11, 2021, as reported by the Issuer in its Quarterly Report on Form 10-Q, as filed with the Securities and Exchange Commission on November 17, 2021.


CUSIP No. 00216W109    13D

 

  1    

  NAMES OF REPORTING PERSONS

 

  GPE VII ATI CO-INVESTMENT (DELAWARE) LIMITED PARTNERSHIP

  2    

  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP

  (a)  ☐        (b)  ☒

 

  3    

  SEC USE ONLY

 

  4    

  SOURCE OF FUNDS

 

  N/A

  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

 

  0

  8     

  SHARED VOTING POWER

 

  13,878,964

  9     

  SOLE DISPOSITIVE POWER

 

  0

  10     

  SHARED DISPOSITIVE POWER

 

  13,878,964

11    

  AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

 

  13,878,964

12    

  CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES

 

  ☐

13    

  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

 

  6.7%*

14    

  TYPE OF REPORTING PERSON

 

  PN

 

*

Calculation based on 207,282,536 shares of Class A Common Stock of the Issuer outstanding as of November 11, 2021, as reported by the Issuer in its Quarterly Report on Form 10-Q, as filed with the Securities and Exchange Commission on November 17, 2021.


This Amendment No. 1 (“Amendment No. 1”) amends and supplements the statement on Schedule 13D originally filed by the Reporting Persons on June 29, 2021 (as amended from time to time, the “Schedule 13D”). Unless otherwise indicated, each capitalized term used but not defined in this Amendment No. 1 shall have the meaning assigned to such term in the Schedule 13D.

 

Item 1.

Security and Issuer

This Statement on Schedule 13D relates to the Class A Common Stock, $0.0001 par value per share (the “Common Stock”), of ATI Physical Therapy, Inc. (the “Issuer” or the “Company”). The address of the principal executive offices of the Issuer is 790 Remington Boulevard, Bolingbrook, Illinois 60440.

 

Item 2.

Identity and Background

Item 2 of the Schedule 13D is supplemented as follows:

This Statement is being filed pursuant to Rule 13d-1 under the Securities Exchange Act of 1934, as amended (the “Exchange Act”), by the following entities (collectively, the “Reporting Persons” and each individually a “Reporting Person”):

 

  1.

Advent International Corporation (“Advent”), a Delaware Corporation;

  2.

Advent International GPE VII, LLC (“Advent Top GP”), a Delaware limited liability company;

  3.

Wilco Acquisition, LP, a Delaware limited partnership (“Wilco Acquisition”);

  4.

Wilco GP, Inc., a Delaware corporation (“Wilco GP”);

  5.

Advent International GPE VII Limited Partnership, a limited partnership organized under the laws of Luxembourg;

  6.

Advent International GPE VII-B Limited Partnership, a limited partnership organized under the laws of Luxembourg;

  7.

Advent International GPE VII-C Limited Partnership, a limited partnership organized under the laws of Luxembourg;

  8.

Advent International GPE VII-D Limited Partnership, a limited partnership organized under the laws of Luxembourg;

  9.

Advent International GPE VII-F Limited Partnership, a limited partnership organized under the laws of Luxembourg;

  10.

Advent International GPE VII-G Limited Partnership, a limited partnership organized under the laws of Luxembourg;

  11.

GPE VII GP S.a.r.l. (“Advent GP Luxembourg”), a corporation organized under the laws of Luxembourg;

  12.

Advent International GPE VII-A Limited Partnership, a limited partnership organized under the laws of the Cayman Islands;

  13.

Advent International GPE VII-E Limited Partnership, a limited partnership organized under the laws of the Cayman Islands;

  14.

Advent International GPE VII-H Limited Partnership, a limited partnership organized under the laws of the Cayman Islands;

  15.

GPE VII GP Limited Partnership (“Advent GP Cayman”), a limited partnership organized under the laws of the Cayman Islands;

  16.

Advent Partners GPE VII 2014 Limited Partnership, a Delaware limited partnership;

  17.

Advent Partners GPE VII 2014 Cayman Limited Partnership, a limited partnership organized under the laws of the Cayman Islands;

  18.

Advent Partners GPE VII - A 2014 Limited Partnership, a Delaware limited partnership;

  19.

Advent Partners GPE VII - A 2014 Cayman Limited Partnership, a limited partnership organized under the laws of the Cayman Islands;

  20.

Advent Partners GPE VII Cayman Limited Partnership, a limited partnership organized under the laws of the Cayman Islands;

  21.

Advent Partners GPE VII - B Cayman Limited Partnership, a limited partnership organized under the laws of the Cayman Islands;

  22.

Advent Partners GPE VII Limited Partnership, a Delaware limited partnership;


  23.

Advent Partners GPE VII - A Cayman Limited Partnership, a limited partnership organized under the laws of the Cayman Islands;

  24.

Advent Partners GPE VII - A Limited Partnership, a Delaware limited partnership;

  25.

GPE VII ATI Co-Investment (Delaware) Limited Partnership (“Advent Co-Invest Fund”), a Delaware limited partnership;

The entities listed in subparagraphs (5) through (10) above are herein collectively referred to as “Advent Luxembourg Funds.” The entities listed in subparagraphs (12) through (14) above are herein collectively referred to as “Advent Cayman Funds.” The entities listed in subparagraphs (16) through (24) above are herein collectively referred to as “Advent AP Funds”, and together with the Advent Luxembourg Funds, the Advent Cayman Funds and Advent Co-Invest Fund, the “Advent Funds.”

Wilco GP, an affiliate of Advent, is the General Partner of Wilco Acquisition. Advent is the manager of Advent Top GP, which in turn is the General Partner of each of Advent GP Cayman, the Advent AP Funds, and the Advent Co-Invest Fund. Advent Top GP is also the manager of Advent GP Luxembourg, which is the General Partner of each of the Advent Luxembourg Funds. Advent GP Cayman is the General Partner of each of the Advent Cayman Funds.

The address of the principal business and the principal office of the Reporting Persons is Prudential Tower, 800 Boylston Street, Boston, Massachusetts 02199-8069.

The name, business address, present principal occupation or employment and citizenship of each director and executive officer (including a director and officer who may be a controlling person) of Advent is set forth on Schedule A to this Statement.

During the last five years, none of the Reporting Persons or, to the knowledge of the Reporting Persons, any of the persons listed on Schedule A attached hereto have been convicted in a criminal proceeding (excluding traffic violations or similar misdemeanors) or been a party to a civil proceeding of a judicial or administrative body of competent jurisdiction and as a result of such proceeding was or is subject to a judgment, decree or final order enjoining future violations of, or prohibiting or mandating activities subject to, federal or state securities laws or finding any violation with respect to such laws. A joint filing agreement among the Reporting Persons is attached as Exhibit 1 to this Statement and incorporated herein by reference.

 

Item 4.

Purpose of Transaction

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

On November 24, 2021, Wilco Acquisition distributed 127,468,397 shares of Common Stock, pro rata and in-kind to its partners, for no consideration (the “Distribution”). In connection with the Distribution, the Advent Funds received the shares set forth in Item 5 below.

 

Item 5.

Interest in Securities of the Issuer

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

The information set forth or incorporated by reference in Items 2 and 6 of this Statement is incorporated by reference in this Item 5.

(a) and (b) The responses of the Reporting Persons to rows (7) through (13) of the cover pages of this Schedule 13D, as of November 24, 2021, are incorporated herein by reference. As of November 24, 2021, the Reporting Persons beneficially owned in the aggregate 118,662,259 shares of Common Stock, which represents approximately 57.2% of the outstanding shares.


The following table sets forth the aggregate number and percentage of the Common Stock beneficially owned by each Reporting Person as of November 24, 2021, after giving effect to the Distribution described in Item 4 of this Amendment No. 1, 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 207,282,536 shares of Common Stock outstanding as of November 11, 2021, as reported by the Issuer in its Quarterly Report on Form 10-Q filed with the Securities and Exchange Commission on November 17, 2021.

 

Reporting Person

   Number of Shares
Beneficially Owned
     Percentage of
Common Stock
 

Advent International Corporation (1)(2)

     118,662,259        57.2

Advent International GPE VII, LLC (1)

     115,830,656        55.9

Wilco Acquisition, LP

     2,831,603        1.4

Wilco GP, Inc. (2)

     2,831,603        1.4

GPE VII GP S.a.r.l (3)

     64,664,697        31.2

GPE VII GP Limited Partnership (4)

     34,541,846        16.7

Advent International GPE VII Limited Partnership

     11,324,692        5.5

Advent International GPE VII-B Limited Partnership

     30,970,377        14.9

Advent International GPE VII-C Limited Partnership

     9,845,475        4.7

Advent International GPE VII-D Limited Partnership

     6,777,137        3.3

Advent International GPE VII-F Limited Partnership

     2,873,508        1.4

Advent International GPE VII-G Limited Partnership

     2,873,508        1.4

Advent International GPE VII-A Limited Partnership

     10,481,756        5.1

Advent International GPE VII-E Limited Partnership

     22,316,207        10.8

Advent International GPE VII-H Limited Partnership

     1,743,883        0.8

Advent Partners GPE VII – 2014 Limited Partnership

     65,045        Less than 0.1

Advent Partners GPE VII – 2014 Cayman Limited Partnership

     155,782        0.1

Advent Partners GPE VII – A 2014 Limited Partnership

     179,333        0.1

Advent Partners GPE VII – A 2014 Cayman Limited Partnership

     109,903        0.1

Advent Partners GPE VII – Cayman Limited Partnership

     806,132        0.4

Advent Partners GPE VII – B Cayman Limited Partnership

     1,063,662        0.5

Advent Partners GPE VII – Limited Partnership

     45,266        Less than 0.1

Advent Partners GPE VII – A Cayman Limited Partnership

     212,875        0.1

Advent Partners GPE VII – A Limited Partnership

     107,151        0.1

GPE VII ATI Co-Investment (Delaware) Limited Partnership

     13,878,964        6.7

 

(1)

Advent Top GP, as the manager of Advent GP Luxembourg and the general partner of each of Advent GP Cayman, the Advent Partners Funds and Advent Co-Invest Fund, and Advent, as the manager of Advent Top GP, may each be deemed to beneficially own the 115,830,656 shares of Common Stock held directly by the Advent Funds.

(2)

Wilco GP, as the general partner of Wilco Acquisition, and Advent, an affiliate of Wilco GP, may each be deemed to beneficially own the 2,831,603 shares of Common Stock held directly by Wilco Acquisition.

(3)

Advent GP Luxembourg, as the general partner of each of the Advent Luxembourg Funds, may be deemed to beneficially own the 64,664,697 shares of Common Stock held directly by the Advent Luxembourg Funds.

(4)

Advent GP Cayman, as the general partner of each of the Advent Cayman Funds, may be deemed to beneficially own the 34,541,846 shares of Common Stock held directly by the Advent Cayman Funds.

The foregoing excludes the contingent right by Wilco Acquisition to receive up to 15,000,000 Earnout Shares (as defined and described in Item 6 of this Statement).


As a result of the Transaction Agreements (as defined and described in Item 6 of this Statement), the Reporting Persons may be deemed to constitute a “group” within the meaning of Section 13(d)(3) of Exchange Act. This Schedule 13D shall not be construed as an admission by the Reporting Persons that the Reporting Persons are, for the purposes of Section 13(d) of the Exchange Act, the beneficial owners of any shares of Common Stock covered by the Transaction Agreements.

(c) Except pursuant to the Distribution, none of the Reporting Persons effected transactions in Common Stock during the past 60 days. To the Reporting Persons’ knowledge, none of the individuals listed on Schedule A to this Statement effected transactions in Common Stock during the past 60 days.

(d) Under certain circumstances, partners, members or shareholders of the Reporting Persons, as the case may be, could have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, shares of Common Stock owned by such Reporting Person.

(e) Inapplicable.

 

Item 7.

Material to Be Filed as Exhibits

 

Exhibit No.    Description
1    Joint Filing Agreement, dated as of November 29, 2021, by and among the Reporting Persons (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: November 29, 2021    ADVENT INTERNATIONAL CORPORATION
  

/s/ Neil Crawford

   Name: Neil Crawford
   Title: Director, Fund Administration
Date: November 29, 2021    WILCO ACQUISITION, LP
   By: WILCO GP, INC., GENERAL PARTNER
  

/s/ John Maldonado

   Name: John Maldonado
   Title: President
Date: November 29, 2021    WILCO GP, INC.
  

/s/ John Maldonado

   Name: John Maldonado
   Title: President
Date: November 29, 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.A.R.L., GENERAL PARTNER
   By: ADVENT INTERNATIONAL GPE VII, LLC, MANAGER and
  

/s/ Justin Nuccio

   Name: Justin Nuccio
   Title: Manager
   By: ADVENT INTERNATIONAL CORPORATION, MANAGER
  

/s/ Neil Crawford

   Name: Neil Crawford
   Title: Director, Fund Administration


Date: November 29, 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, GENERAL PARTNER
   By: ADVENT INTERNATIONAL GPE VII, LLC, GENERAL PARTNER
   By: ADVENT INTERNATIONAL CORPORATION, MANAGER
  

/s/ Neil Crawford

   Name: Neil Crawford
   Title: Director, Fund Administration
Date: November 29, 2021    ADVENT PARTNERS GPE VII 2014 LIMITED PARTNERSHIP
   ADVENT PARTNERS GPE VII 2014 CAYMAN LIMITED PARTNERSHIP
   ADVENT PARTNERS GPE VII—A 2014 LIMITED PARTNERSHIP
   ADVENT PARTNERS GPE VII—A 2014 CAYMAN LIMITED PARTNERSHIP
   ADVENT PARTNERS GPE VII CAYMAN LIMITED PARTNERSHIP
   ADVENT PARTNERS GPE VII—B CAYMAN LIMITED PARTNERSHIP
   ADVENT PARTNERS GPE VII LIMITED PARTNERSHIP
   ADVENT PARTNERS GPE VII—A CAYMAN LIMITED PARTNERSHIP
   ADVENT PARTNERS GPE VII—A LIMITED PARTNERSHIP
   By: ADVENT INTERNATIONAL GPE VII, LLC, GENERAL PARTNER
   By: ADVENT INTERNATIONAL CORPORATION, MANAGER
  

/s/ Neil Crawford

   Name: Neil Crawford
   Title: Director, Fund Administration
Date: November 29, 2021    GPE VII ATI CO-INVESTMENT (DELAWARE) LIMITED PARTNERSHIP
   By: ADVENT INTERNATIONAL GPE VII, LLC, GENERAL PARTNER


   By: ADVENT INTERNATIONAL CORPORATION, MANAGER
  

/s/ Neil Crawford

   Name: Neil Crawford
   Title: Director, Fund Administration
Date: November 29, 2021    GPE VII GP S.A.R.L.
   By: ADVENT INTERNATIONAL GPE VII, LLC, MANAGER and
  

/s/ Justin Nuccio

   Name: Justin Nuccio
   Title: Manager
   By: ADVENT INTERNATIONAL CORPORATION, MANAGER
  

/s/ Neil Crawford

   Name: Neil Crawford
   Title: Director, Fund Administration
Date: November 29, 2021    GPE VII GP LIMITED PARTNERSHIP
   By: ADVENT INTERNATIONAL GPE VII, LLC, GENERAL PARTNER
   By: ADVENT INTERNATIONAL CORPORATION, MANAGER
  

/s/ Neil Crawford

   Name: Neil Crawford
   Title: Director, Fund Administration
Date: November 29, 2021    ADVENT INTERNATIONAL GPE VII, LLC
   By: ADVENT INTERNATIONAL CORPORATION, MANAGER
  

/s/ Neil Crawford

   Name: Neil Crawford
   Title: Director, Fund Administration


SCHEDULE A

1. Advent International Corporation

The name, business address, title, present principal occupation or employment of each of the directors and executive officers of Advent International Corporation (“Advent”), are set forth below. If no business address is given, the director’s or executive officer’s business address is Prudential Tower, 800 Boylston Street, Boston, Massachusetts 02199-8069. Unless otherwise indicated, each occupation set forth opposite an individual’s name refers to Advent. Unless otherwise indicated below, all of the persons listed below are citizens of the United States of America. Mr. Brocklebank is a citizen of the United Kingdom. Mr. Etlin is a citizen of Brazil. Mr. Janshen is a citizen of Germany.

 

Name

       

Present Principal Occupation Including Name and Address of Employer

    
Directors

Thomas H. Lauer

Steven M. Tadler

John F. Brooke

Mark Hoffman

David M. Mussafer

John L. Maldonado

    

Director

Director

Director; Managing Director of Brooke Private Equity Associates 20 Custom House Street, Suite 610, Boston, MA 02110

Director

Director; Chairman & Managing Partner; Executive Officers’ Committee Member

Director; Senior Vice President & Managing Partner; Executive Officers’ Committee Member

David M. McKenna      Director

Name

      

Present Principal Occupation Including Name and Address of Employer

Executive Officers

(Who Are Not Directors)

    

Richard F. Kane

Eileen Sivolella

James R. Westra

Andrew D. Dodge

Heather R. Zuzenak

Jarlyth H. Gibson

James G.A. Brocklebank

Patrice Etlin

Jan Janshen

    

Senior Vice President of Operations and Business Development & Managing Director; Assistant Secretary

Senior Vice President & Managing Director; Chief Financial Officer; Treasurer; Assistant Secretary

Senior Vice President & Managing Partner; Chief Legal Officer; General Counsel

Vice President; Deputy General Counsel; Secretary

Chief Compliance Officer

Risk Officer; Assistant Treasurer

Senior Vice President & Managing Partner; Executive Officers’ Committee Member

Senior Vice President & Managing Partner; Executive Officers’ Committee Member

Senior Vice President & Managing Partner; Executive Officers’ Committee Member

2. Wilco GP, Inc.

The name, business address, title, present principal occupation or employment of each of the directors and executive officers of Wilco GP, Inc. (“Wilco GP”), are set forth below. If no business address is given, the director’s or executive officer’s business address is Prudential Tower, 800 Boylston Street, Boston, Massachusetts 02199-8069. Unless otherwise indicated, each occupation set forth opposite an individual’s name refers to Wilco GP. Unless otherwise indicated below, all of the persons listed below are citizens of the United States of America.

 

Name

       

Present Principal Occupation Including Name and Address of Employer

Directors     

John L. Maldonado

Christopher Pike

Dylan Bates

    

Director; President

Director; Treasurer and Secretary

Director


Name

       

Present Principal Occupation Including Name and Address of Employer

Executive Officers

(Who Are Not Directors)

    
N/A     

3. GPE VII GP S.a.r.l.

The name, business address, title, present principal occupation or employment of each of the managers and executive officers of GPE VII GP S.a.r.l. (“Advent GP Luxembourg”), are set forth below. If no business address is given, the manager’s or executive officer’s business address is Prudential Tower, 800 Boylston Street, Boston, Massachusetts 02199-8069. Unless otherwise indicated, each occupation set forth opposite an individual’s name refers to Advent GP Luxembourg. Unless otherwise indicated below, all of the persons listed below are citizens of the United States of America. Ms. Harroch is a citizen of France. Mr. Nuccio is a citizen of the United Kingdom.

 

Name

       

Present Principal Occupation Including Name and Address of Employer

Managers     
Advent International
GPE VII, LLC
     Manager

Justin Nuccio

Linda Harroch

Jarlyth Gibson

    

Manager

Manager

Manager

Name

      

Present Principal Occupation Including Name and Address of Employer

Executive Officers

(Who Are Not Managers)

    

N/A

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