0001912699-23-000007.txt : 20230814 0001912699-23-000007.hdr.sgml : 20230814 20230814162433 ACCESSION NUMBER: 0001912699-23-000007 CONFORMED SUBMISSION TYPE: 13F-HR PUBLIC DOCUMENT COUNT: 2 CONFORMED PERIOD OF REPORT: 20230630 FILED AS OF DATE: 20230814 DATE AS OF CHANGE: 20230814 EFFECTIVENESS DATE: 20230814 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: 231170740 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 06-30-2023 06-30-2023 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 08-14-2023 0 2 509500 false INFORMATION TABLE 2 information_table.xml INFORMATION TABLE BERKSHIRE HATHAWAY INC DELCL A084670108429264829SHSOLE82900MARKEL GROUP INCCOM5705351048023658008SHSOLE5800800