0001628280-23-018276.txt : 20230515 0001628280-23-018276.hdr.sgml : 20230515 20230515172537 ACCESSION NUMBER: 0001628280-23-018276 CONFORMED SUBMISSION TYPE: 13F-HR PUBLIC DOCUMENT COUNT: 2 CONFORMED PERIOD OF REPORT: 20230331 FILED AS OF DATE: 20230515 DATE AS OF CHANGE: 20230515 EFFECTIVENESS DATE: 20230515 FILER: COMPANY DATA: COMPANY CONFORMED NAME: Graham Holdings Co Master Retirement Trust CENTRAL INDEX KEY: 0001912699 IRS NUMBER: 136666518 STATE OF INCORPORATION: NY FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: 13F-HR SEC ACT: 1934 Act SEC FILE NUMBER: 028-22321 FILM NUMBER: 23924509 BUSINESS ADDRESS: STREET 1: C/O GRAHAM HOLDINGS COMPANY STREET 2: 1300 NORTH 17TH STREET CITY: ARLINGTON STATE: VA ZIP: 22209 BUSINESS PHONE: 703-345-6300 MAIL ADDRESS: STREET 1: C/O GRAHAM HOLDINGS COMPANY STREET 2: 1300 NORTH 17TH STREET CITY: ARLINGTON STATE: VA ZIP: 22209 13F-HR 1 primary_doc.xml X0202 13F-HR LIVE false false false 0001912699 XXXXXXXX 03-31-2023 03-31-2023 Graham Holdings Co Master Retirement Trust

C/O GRAHAM HOLDINGS COMPANY 1300 NORTH 17TH STREET ARLINGTON VA 22209

13F HOLDINGS REPORT 028-22321 N Wallace R. Cooney 703-345-6470 Wallace R. Cooney Arlington VA 05-15-2023 0 1 385982 false INFORMATION TABLE 2 information_table.xml INFORMATION TABLE BERKSHIRE HATHAWAY INC DELCL A084670108385982829SHSOLE82900