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
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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 17,611 160 SH   SOLE   160 0 0
ALPHABET INC CAP STK CL A 02079K305 BBG009S39JX6 160,644 1,150 SH   SOLE   1,150 0 0
ALPHABET INC CAP STK CL C 02079K107 BBG009S3NB30 6,141,588 43,579 SH   SOLE   43,579 0 0
BERKSHIRE HATHAWAY INC DEL CL A 084670108 BBG000DWCFL4 1,085,250 2 SH   SOLE   2 0 0
BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 BBG000DWG505 736,503 2,065 SH   SOLE   2,065 0 0
BROWN FORMAN CORP CL B 115637209 BBG000BD2NY8 72,803 1,275 SH   SOLE   1,275 0 0
CME GROUP INC COM 12572Q105 BBG000BHLYP4 284,310 1,350 SH   SOLE   1,350 0 0
CONOCOPHILLIPS COM 20825C104 BBG000BQQH30 92,856 800 SH   SOLE   800 0 0
DARLING INGREDIENTS INC COM 237266101 BBG000BN8ZK8 622,751 12,495 SH   SOLE   12,495 0 0
DIGIMARC CORP NEW COM 25381B101 BBG000G9F1Z5 23,710,974 656,450 SH   SOLE   656,450 0 0
EATON CORP PLC SHS G29183103 BBG000BJ3PD2 308,250 1,280 SH   SOLE   1,280 0 0
ENERGY RECOVERY INC COM 29270J100 BBG000VFBBC1 3,613,324 191,790 SH   SOLE   191,790 0 0
ENSTAR GROUP LIMITED SHS G3075P101 BBG000NQKP71 6,410,060 21,777 SH   SOLE   21,777 0 0
EXXON MOBIL CORP COM 30231G102 BBG000GZQ728 417,417 4,175 SH   SOLE   4,175 0 0
FRANCO NEV CORP COM 351858105 BBG000RD3CL8 134,302 1,212 SH   SOLE   1,212 0 0
GXO LOGISTICS INCORPORATED COMMON STOCK 36262G101 BBG00YDGX945 7,721,756 126,255 SH   SOLE   126,255 0 0
HEICO CORP NEW COM 422806109 BBG000BL16Q7 724,960 4,053 SH   SOLE   4,053 0 0
MASTERCARD INCORPORATED CL A 57636Q104 BBG000F1ZSQ2 931,498 2,184 SH   SOLE   2,184 0 0
MICROSOFT CORP COM 594918104 BBG000BPH459 498,253 1,325 SH   SOLE   1,325 0 0
NATERA INC COM 632307104 BBG001J1BQ86 8,571,971 136,845 SH   SOLE   136,845 0 0
NOBLE CORP PLC ORD SHS A G65431127 BBG018KBK3G8 758,520 15,750 SH   SOLE   15,750 0 0
NOVO-NORDISK A S ADR 670100205 BBG000BQBKR3 391,041 3,780 SH   SOLE   3,780 0 0
PERMIAN BASIN RTY TR UNIT BEN INT 714236106 BBG000BQV317 361,215 25,875 SH   SOLE   25,875 0 0
PHILLIPS 66 COM 718546104 BBG00286S4N9 22,634 170 SH   SOLE   170 0 0
PTC INC COM 69370C100 BBG000C2VBB0 10,785,409 61,645 SH   SOLE   61,645 0 0
QUANTA SVCS INC COM 74762E102 BBG000BBL8V7 269,750 1,250 SH   SOLE   1,250 0 0
RENAISSANCERE HLDGS LTD COM G7496G103 BBG000BFVZ83 5,225,360 26,660 SH   SOLE   26,660 0 0
RIVIAN AUTOMOTIVE INC COM CL A 76954A103 BBG00741Y1N2 90,321 3,850 SH   SOLE   3,850 0 0
RXO INC COMMON STOCK 74982T103 BBG0160DYCH4 3,686,710 158,500 SH   SOLE   158,500 0 0
SITIO ROYALTIES CORP CLASS A COM 82983N108 BBG01C36Y855 707,181 30,080 SH   SOLE   30,080 0 0
SPDR GOLD TR GOLD SHS 78463V107 BBG000CRF6Q8 124,261 650 SH   SOLE   650 0 0
ST JOE CO COM 790148100 BBG000D6TC94 796,482 13,235 SH   SOLE   13,235 0 0
STEREOTAXIS INC COM NEW 85916J409 BBG000PSJBC2 5,659,386 3,233,935 SH   SOLE   3,233,935 0 0
TEXAS PACIFIC LAND CORPORATI COM 88262P102 BBG00YRJXKB1 29,731,885 18,908 SH   SOLE   18,908 0 0
TRANSMEDICS GROUP INC COM 89377M109 BBG00NZ6J685 3,945,711 49,990 SH   SOLE   49,990 0 0
TRUPANION INC COM 898202106 BBG002BC7WC5 7,955,025 260,735 SH   SOLE   260,735 0 0
UBIQUITI INC COM 90353W103 BBG001R72SR9 3,480,347 24,938 SH   SOLE   24,938 0 0
VOLITIONRX LTD COM 928661107 BBG000BQWFH2 2,673,406 3,728,600 SH   SOLE   3,728,600 0 0
XPO INC COM 983793100 BBG000L5CJF3 7,993,025 91,255 SH   SOLE   91,255 0 0