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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 FIGI (to the nearest dollar) PRN AMT PRN CALL DISCRETION MANAGER SOLE SHARED NONE
ALPHABET INC CAP STKCL C COM 02079K107   87,602 621,597 SH   SOLE   621,597 0 0
ALPHABET INC CL A COM 02079K305   1,813 12,980 SH   SOLE   12,980 0 0
BERKSHIRE HATHAWAY INC DEL CL B NEW COM 084670702   24,202 67,858 SH   SOLE   67,858 0 0
COSTCO WHOLESALE CORP COM 22160K105   97,220 147,285 SH   SOLE   147,285 0 0
FASTENAL CO COM 311900104   45,307 699,507 SH   SOLE   699,507 0 0
MARKEL CORP COM 570535104   52,832 37,208 SH   SOLE   37,208 0 0
MARTIN MARIETTA MATLS INC COM 573284106   54,025 108,285 SH   SOLE   108,285 0 0