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
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
BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 7,927,782 29,689,845 SH   SOLE   29,689,845 0 0
CANADIAN NATL RY CO COM 136375102 5,920,745 54,826,786 SH   SOLE   54,826,786 0 0
CARVANA CO CL A 146869102 10,556 520,000 SH   SOLE   520,000 0 0
CATERPILLAR INC COM 149123101 1,206,581 7,353,614 SH   SOLE   7,353,614 0 0
COCA-COLA FEMSA SAB DE CV SPONSORD ADR REP 191241108 362,877 6,214,719 SH   SOLE   6,214,719 0 0
COUPANG INC CL A 22266T109 154,165 9,248,045 SH   SOLE   9,248,045 0 0
CROWN CASTLE INC COM 22822V101 205,271 1,420,072 SH   SOLE   1,420,072 0 0
DEERE & CO COM 244199105 1,308,079 3,917,693 SH   SOLE   3,917,693 0 0
ECOLAB INC COM 278865100 702,809 4,866,427 SH   SOLE   4,866,427 0 0
FEDEX CORP COM 31428X106 227,807 1,534,362 SH   SOLE   1,534,362 0 0
KRAFT HEINZ CO COM 500754106 87,464 2,622,600 SH   SOLE   2,622,600 0 0
MADISON SQUARE GRDN SPRT COR CL A 55825T103 80,958 592,406 SH   SOLE   592,406 0 0
MICROSOFT CORP COM 594918104 9,144,742 39,264,670 SH   SOLE   39,264,670 0 0
ON HLDG AG NAMEN AKT A H5919C104 8,025 500,000 SH   SOLE   500,000 0 0
SCHRODINGER INC COM 80810D103 174,402 6,981,664 SH   SOLE   6,981,664 0 0
UNITED PARCEL SERVICE INC CL B 911312106 119,651 740,689 SH   SOLE   740,689 0 0
VROOM INC COM 92918V109 2,900 2,500,000 SH   SOLE   2,500,000 0 0
WALMART INC COM 931142103 391,805 3,020,859 SH   SOLE   3,020,859 0 0
WASTE CONNECTIONS INC COM 94106B101 290,418 2,149,175 SH   SOLE   2,149,175 0 0
WASTE MGMT INC DEL COM 94106L109 5,644,894 35,234,344 SH   SOLE   35,234,344 0 0
WEBER INC CL A 94770D102 16,425 2,500,000 SH   SOLE   2,500,000 0 0