0001104659-21-139296.txt : 20211115 0001104659-21-139296.hdr.sgml : 20211115 20211115170036 ACCESSION NUMBER: 0001104659-21-139296 CONFORMED SUBMISSION TYPE: 13F-HR PUBLIC DOCUMENT COUNT: 2 CONFORMED PERIOD OF REPORT: 20210930 FILED AS OF DATE: 20211115 DATE AS OF CHANGE: 20211115 EFFECTIVENESS DATE: 20211115 FILER: COMPANY DATA: COMPANY CONFORMED NAME: Port Capital LLC CENTRAL INDEX KEY: 0001729212 IRS NUMBER: 320475866 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: 13F-HR SEC ACT: 1934 Act SEC FILE NUMBER: 028-18218 FILM NUMBER: 211412040 BUSINESS ADDRESS: STREET 1: 180 NORTH STETSON AVENUE, SUITE 5700 CITY: CHICAGO STATE: IL ZIP: 60601 BUSINESS PHONE: 312.788.2400 MAIL ADDRESS: STREET 1: 180 NORTH STETSON AVENUE, SUITE 5700 CITY: CHICAGO STATE: IL ZIP: 60601 13F-HR 1 primary_doc.xml 13F-HR LIVE false false false 0001729212 XXXXXXXX 09-30-2021 09-30-2021 false Port Capital LLC

180 North Stetson Avenue, Suite 5700 Chicago IL 60601

13F HOLDINGS REPORT 028-18218 N Tracy Rothmeyer 312-788-2400 /s/ Tracy Rothmeyer Chicago IL 11-15-2021 0 81 1981120 INFORMATION TABLE 2 infotable.xml ABBOTT LABS COM COM 002824100 937 7929 SH SOLE 7929 0 0 AIR PRODS & CHEMS INC COM COM 009158106 33523 130892 SH SOLE 130892 0 0 ALPHABET INC CAP STK CL A CAP STK CL A 02079K305 1056 395 SH SOLE 395 0 0 ALPHABET INC CAP STK CL C CAP STK CL C 02079K107 1090 409 SH SOLE 409 0 0 ALPHATEC HLDGS INC COM NEW COM NEW 02081G201 158 13000 SH SOLE 13000 0 0 AMAZON COM INC COM COM 023135106 795 242 SH SOLE 242 0 0 AMERICAN EXPRESS CO COM COM 025816109 217 1295 SH SOLE 1295 0 0 AMETEK INC COM COM 031100100 56352 454418 SH SOLE 454418 0 0 AMPHENOL CORP NEW CL A CL A 032095101 51406 701979 SH SOLE 701979 0 0 APPLE INC COM COM 037833100 7997 56518 SH SOLE 56518 0 0 ARCH CAP GROUP LTD ORD ORD G0450A105 35261 923553 SH SOLE 923553 0 0 ARGO GROUP INTL HLDGS LTD COM COM G0464B107 46486 890200 SH SOLE 890200 0 0 BERKSHIRE HATHAWAY CLASS B CL B NEW 084670702 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