0001872871-21-000002.txt : 20211112 0001872871-21-000002.hdr.sgml : 20211112 20211112112335 ACCESSION NUMBER: 0001872871-21-000002 CONFORMED SUBMISSION TYPE: 13F-HR PUBLIC DOCUMENT COUNT: 2 CONFORMED PERIOD OF REPORT: 20210930 FILED AS OF DATE: 20211112 DATE AS OF CHANGE: 20211112 EFFECTIVENESS DATE: 20211112 FILER: COMPANY DATA: COMPANY CONFORMED NAME: SUMMIT PARTNERS L P CENTRAL INDEX KEY: 0000830588 IRS NUMBER: 043478657 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: 13F-HR SEC ACT: 1934 Act SEC FILE NUMBER: 028-11703 FILM NUMBER: 211401515 BUSINESS ADDRESS: STREET 1: 222 BERKELEY STREET STREET 2: 18TH FLOOR CITY: BOSTON STATE: MA ZIP: 02116 BUSINESS PHONE: 6178241094 MAIL ADDRESS: STREET 1: 222 BERKELEY STREET STREET 2: 18TH FLOOR CITY: BOSTON STATE: MA ZIP: 02116 13F-HR 1 primary_doc.xml 13F-HR LIVE false true false 0000830588 XXXXXXXX 09-30-2021 09-30-2021 SUMMIT PARTNERS L P

222 BERKELEY STREET 18TH FLOOR BOSTON MA 02116

13F HOLDINGS REPORT 028-11703 N ADAM H. HENNESSEY 617-824-1000 /S/ ADAM H. HENNESSEY BOSTON MA 11-12-2021 0 9 2899307 false INFORMATION TABLE 2 table.xml A10 NETWORKS, INC. COM 002121101 128881 9560941 SH SOLE 9560941 0 0 A K A BRANDS HLDG CORP COM 00152K101 621835 72644324 SH SOLE 72644324 0 0 CASA SYSTEMS, INC. COM 14713L102 231364 34124480 SH SOLE 34124480 0 0 ENGAGESMART COMMON STOCK 29283F103 917125 26926752 SH SOLE 26926752 0 0 JAMF HOLDINGS CORP COM 47074L105 172392 4475381 SH SOLE 4475381 0 0 LIFESTANCE HEALTH GROUP INC. COM 53228F101 663153 45734703 SH SOLE 45734703 0 0 MACOM TECHNOLOGY SOLUTIONS HOLDINGS INC. COM 55405Y100 57651 888718 SH SOLE 888718 0 0 MARKFORGED COM 57064N102 95299 14527328 SH SOLE 14527328 0 0 SHARECARE COM CL A 81948W104 11607 1410357 SH SOLE 1410357 0 0