The Securities and Exchange Commission has not necessarily reviewed the information in this filing and has not determined if it is accurate and complete.
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
Expires: July 31, 2015
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 STK CL C 02079K107 34,608,284 101,568 SH SOLE 38,682 0 62,886
AMAZON COM INC COM 023135106 43,278,622 173,705 SH SOLE 70,187 0 103,518
AON PLC SHS CL A G0403H108 37,255,469 134,608 SH SOLE 61,134 0 73,474
APPLE INC COM 037833100 1,110,955 3,336 SH SOLE 0 0 3,336
BERKSHIRE HATHAWAY INC DEL CL A 084670108 747,005 1 SH SOLE 0 0 1
BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 22,633,820 45,454 SH SOLE 0 0 45,454
CANADIAN NATL RY CO COM 136375102 22,411,243 188,488 SH SOLE 79,474 0 109,014
CANADIAN PACIFIC KANSAS CITY COM 13646K108 22,091,450 259,594 SH SOLE 107,175 0 152,419
CHARLES SCHWAB CORP (THE) COM 808513105 204,082 2,088 SH SOLE 0 0 2,088
CME GROUP INC COM 12572Q105 51,478,334 196,497 SH SOLE 82,097 0 114,400
COCA COLA CO COM 191216100 694,444 8,067 SH SOLE 0 0 8,067
COLGATE PALMOLIVE CO COM 194162103 7,064,074 82,795 SH SOLE 23,805 0 58,990
COPART INC COM 217204106 53,950,320 1,977,651 SH SOLE 814,754 0 1,162,897
CRH PLC ORD G25508105 15,220,719 183,825 SH SOLE 55,693 0 128,132
EQUIFAX INC COM 294429105 773,211 5,634 SH SOLE 0 0 5,634
FAIR ISAAC CORP COM 303250104 34,962,884 59,012 SH SOLE 17,914 0 41,098
FERRARI N V COM N3167Y103 27,750,532 70,639 SH SOLE 30,440 0 40,199
FERROVIAL NV ORD SHS N3168P101 10,436,053 192,903 SH SOLE 85,856 0 107,047
INTUIT COM 461202103 2,231,046 8,092 SH SOLE 0 0 8,092
ISHARES TR 0-3 MTH TREASURY 46436E718 1,155,325 11,475 SH SOLE 0 0 11,475
JOHNSON & JOHNSON COM 478160104 756,627 2,858 SH SOLE 0 0 2,858
LINDE PLC SHS G54950103 45,023,434 94,856 SH SOLE 43,009 0 51,847
MARSH & MCLENNAN COS INC COM 571748102 37,044,518 216,977 SH SOLE 98,033 0 118,944
MARTIN MARIETTA MATLS INC COM 573284106 29,287,611 61,040 SH SOLE 22,888 0 38,152
MASTERCARD INCORPORATED CL A 57636Q104 83,596,797 151,589 SH SOLE 57,685 0 93,904
META PLATFORMS INC CL A 30303M102 24,731,543 34,104 SH SOLE 11,439 0 22,665
MICROSOFT CORP COM 594918104 53,836,419 104,965 SH SOLE 42,859 0 62,106
MOBILITY GLOBAL INC COM SHS 60744M106 1,375,997 80,233 SH SOLE 35,046 0 45,187
MOODYS CORP COM 615369105 76,803,847 169,123 SH SOLE 69,509 0 99,614
MSCI INC COM 55354G100 53,785,233 99,850 SH SOLE 41,321 0 58,529
PROCTER & GAMBLE CO COM 742718109 15,575,050 107,207 SH SOLE 42,509 0 64,698
REPUBLIC SVCS INC COM 760759100 36,839,753 175,536 SH SOLE 82,877 0 92,659
S&P GLOBAL INC COM 78409V104 27,504,832 69,726 SH SOLE 27,299 0 42,427
STRYKER CORPORATION COM 863667101 933,573 3,390 SH SOLE 0 0 3,390
TRANSDIGM GROUP INC COM 893641100 57,909,357 53,491 SH SOLE 18,794 0 34,697
VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 470,036 671 SH SOLE 0 0 671
VERISK ANALYTICS INC COM 92345Y106 50,341,089 299,917 SH SOLE 140,831 0 159,086
VISA INC COM CL A 92826C839 9,110,825 25,355 SH SOLE 7,541 0 17,814
VULCAN MATLS CO COM 929160109 11,340,564 46,358 SH SOLE 12,275 0 34,083
WASTE CONNECTIONS INC COM 94106B101 2,240,460 14,555 SH SOLE 0 0 14,555
WASTE MGMT INC DEL COM 94106L109 38,187,506 187,267 SH SOLE 79,409 0 107,858