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 FIGI (to the nearest dollar) PRN AMT PRN CALL DISCRETION MANAGER SOLE SHARED NONE
ABBOTT LABS COM 002824100 BBG000B9ZXB4 18,242 160 SH   SOLE   160 0 0
ALPHABET INC CAP STK CL A 02079K305 BBG009S39JX6 218,093 1,315 SH   SOLE   1,315 0 0
ALPHABET INC CAP STK CL C 02079K107 BBG009S3NB30 8,578,519 51,310 SH   SOLE   51,310 0 0
BERKSHIRE HATHAWAY INC DEL CL A 084670108 BBG000DWCFL4 1,382,360 2 SH   SOLE   2 0 0
BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 BBG000DWG505 950,437 2,065 SH   SOLE   2,065 0 0
CORPAY INC COM SHS 219948106 BBG000GPXKX9 225,187 720 SH   SOLE   720 0 0
DIGIMARC CORP NEW COM 25381B101 BBG000G9F1Z5 15,819,552 588,525 SH   SOLE   588,525 0 0
EATON CORP PLC SHS G29183103 BBG000BJ3PD2 1,068,894 3,225 SH   SOLE   3,225 0 0
ENERGY RECOVERY INC COM 29270J100 BBG000VFBBC1 3,597,382 206,865 SH   SOLE   206,865 0 0
ENSTAR GROUP LIMITED SHS G3075P101 BBG000NQKP71 5,066,007 15,753 SH   SOLE   15,753 0 0
EXXON MOBIL CORP COM 30231G102 BBG000GZQ728 424,923 3,625 SH   SOLE   3,625 0 0
GXO LOGISTICS INCORPORATED COMMON STOCK 36262G101 BBG00YDGX945 7,003,675 134,505 SH   SOLE   134,505 0 0
HEICO CORP NEW COM 422806109 BBG000BL16Q7 1,277,330 4,885 SH   SOLE   4,885 0 0
MASTERCARD INCORPORATED CL A 57636Q104 BBG000F1ZSQ2 1,330,297 2,694 SH   SOLE   2,694 0 0
MICROSOFT CORP COM 594918104 BBG000BPH459 548,633 1,275 SH   SOLE   1,275 0 0
NATERA INC COM 632307104 BBG001J1BQ86 14,489,438 114,135 SH   SOLE   114,135 0 0
NOBLE CORP PLC ORD SHS A G65431127 BBG018KBK3G8 238,524 6,600 SH   SOLE   6,600 0 0
NOVO-NORDISK A S ADR 670100205 BBG000BQBKR3 273,861 2,300 SH   SOLE   2,300 0 0
PHILLIPS 66 COM 718546104 BBG00286S4N9 22,347 170 SH   SOLE   170 0 0
PTC INC COM 69370C100 BBG000C2VBB0 10,789,919 59,725 SH   SOLE   59,725 0 0
QUANTA SVCS INC COM 74762E102 BBG000BBL8V7 299,641 1,005 SH   SOLE   1,005 0 0
RENAISSANCERE HLDGS LTD COM G7496G103 BBG000BFVZ83 7,206,342 26,455 SH   SOLE   26,455 0 0
RIVIAN AUTOMOTIVE INC COM CL A 76954A103 BBG00741Y1N2 67,320 6,000 SH   SOLE   6,000 0 0
RXO INC COMMON STOCK 74982T103 BBG0160DYCH4 4,268,180 152,435 SH   SOLE   152,435 0 0
SPDR GOLD SHARES GOLD SHS 78463V107 BBG000CRF6Q8 157,989 650 SH   SOLE   650 0 0
ST JOE CO COM 790148100 BBG000D6TC94 976,109 16,740 SH   SOLE   16,740 0 0
STEREOTAXIS INC COM NEW 85916J409 BBG000PSJBC2 7,814,087 3,830,435 SH   SOLE   3,830,435 0 0
TAIWAN SEMICONDUCTOR MFG LTD SPONSORED ADS 874039100 BBG000BD8ZK0 6,037,638 34,765 SH   SOLE   34,765 0 0
TEXAS PACIFIC LAND CORPORATI COM 88262P102 BBG00YRJXKB1 34,772,051 39,302 SH   SOLE   39,302 0 0
TRANSMEDICS GROUP INC COM 89377M109 BBG00NZ6J685 9,938,885 63,305 SH   SOLE   63,305 0 0
TRUPANION INC COM 898202106 BBG002BC7WC5 11,197,955 266,745 SH   SOLE   266,745 0 0
UBIQUITI INC COM 90353W103 BBG001R72SR9 5,746,317 25,917 SH   SOLE   25,917 0 0
VOLITIONRX LTD COM 928661107 BBG000BQWFH2 3,663,095 6,095,000 SH   SOLE   6,095,000 0 0
XPO INC COM 983793100 BBG000L5CJF3 8,616,389 80,145 SH   SOLE   80,145 0 0