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The reader should not assume that the information is accurate and complete.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 13F

FORM 13F INFORMATION TABLE
OMB APPROVAL
OMB Number: 3235-0006
Estimated average burden
hours per response: 23.8
COLUMN 1 COLUMN 2 COLUMN 3 COLUMN 4 COLUMN 5 COLUMN 6 COLUMN 7 COLUMN 8
VALUE SHRS OR SH/ PUT/ INVESTMENT OTHER VOTING AUTHORITY
NAME OF ISSUER TITLE OF CLASS CUSIP (x$1000) PRN AMT PRN CALL DISCRETION MANAGER SOLE SHARED NONE
ALPHABET INC CAP STKCL C COM 02079K107 42,439 24,225 SH   SOLE   24,225 0 0
ALPHABET INC CL A COM 02079K305 587 335 SH   SOLE   335 0 0
BERKSHIRE HATHAWAY INC DEL CL B NEW COM 084670702 23,906 103,102 SH   SOLE   103,102 0 0
COSTCO WHOLESALE CORP COM 22160K105 44,066 116,955 SH   SOLE   116,955 0 0
FASTENAL CO COM 311900104 24,950 510,953 SH   SOLE   510,953 0 0
ITAU UNIBANCO HLDG SA NS SPONSORED ADR REP ADR 465562106 13,006 2,135,636 SH   SOLE   2,135,636 0 0
MARKEL CORP COM 570535104 23,358 22,605 SH   SOLE   22,605 0 0
MARTIN MARIETTA MATLS INC COM 573284106 28,076 98,870 SH   SOLE   98,870 0 0