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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   75,031 620,246 SH   SOLE   620,246 0 0
ALPHABET INC CL A COM 02079K305   1,290 10,780 SH   SOLE   10,780 0 0
BERKSHIRE HATHAWAY INC DEL CL B NEW COM 084670702   24,810 72,758 SH   SOLE   72,758 0 0
COSTCO WHOLESALE CORP COM 22160K105   77,707 144,334 SH   SOLE   144,334 0 0
FASTENAL CO COM 311900104   40,294 683,061 SH   SOLE   683,061 0 0
MARKEL CORP COM 570535104   50,738 36,682 SH   SOLE   36,682 0 0
MARTIN MARIETTA MATLS INC COM 573284106   50,272 108,886 SH   SOLE   108,886 0 0