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 32,929 340 SH   SOLE   340 0 0
ALPHABET INC CAP STK CL A 02079K305 BBG009S39JX6 150,489 1,150 SH   SOLE   1,150 0 0
ALPHABET INC CAP STK CL C 02079K107 BBG009S3NB30 5,710,292 43,309 SH   SOLE   43,309 0 0
BERKSHIRE HATHAWAY INC DEL CL A 084670108 BBG000DWCFL4 1,062,954 2 SH   SOLE   2 0 0
BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 BBG000DWG505 723,370 2,065 SH   SOLE   2,065 0 0
BROWN FORMAN CORP CL B 115637209 BBG000BD2NY8 73,555 1,275 SH   SOLE   1,275 0 0
CME GROUP INC COM 12572Q105 BBG000BHLYP4 270,297 1,350 SH   SOLE   1,350 0 0
CONOCOPHILLIPS COM 20825C104 BBG000BQQH30 95,840 800 SH   SOLE   800 0 0
DARLING INGREDIENTS INC COM 237266101 BBG000BN8ZK8 673,119 12,895 SH   SOLE   12,895 0 0
DIGIMARC CORP NEW COM 25381B101 BBG000G9F1Z5 21,523,001 662,450 SH   SOLE   662,450 0 0
EATON CORP PLC SHS G29183103 BBG000BJ3PD2 219,678 1,030 SH   SOLE   1,030 0 0
ENERGY RECOVERY INC COM 29270J100 BBG000VFBBC1 4,848,500 228,595 SH   SOLE   228,595 0 0
ENSTAR GROUP LIMITED SHS G3075P101 BBG000NQKP71 5,545,914 22,917 SH   SOLE   22,917 0 0
EXXON MOBIL CORP COM 30231G102 BBG000GZQ728 490,897 4,175 SH   SOLE   4,175 0 0
FLEETCOR TECHNOLOGIES INC COM 339041105 BBG000GPXKX9 946,801 3,708 SH   SOLE   3,708 0 0
FRANCO NEV CORP COM 351858105 BBG000RD3CL8 201,837 1,512 SH   SOLE   1,512 0 0
GXO LOGISTICS INCORPORATED COMMON STOCK 36262G101 BBG00YDGX945 7,525,382 128,310 SH   SOLE   128,310 0 0
HEICO CORP NEW COM 422806109 BBG000BL16Q7 656,302 4,053 SH   SOLE   4,053 0 0
MASTERCARD INCORPORATED CL A 57636Q104 BBG000F1ZSQ2 864,667 2,184 SH   SOLE   2,184 0 0
MICROSOFT CORP COM 594918104 BBG000BPH459 418,369 1,325 SH   SOLE   1,325 0 0
NATERA INC COM 632307104 BBG001J1BQ86 7,321,826 165,465 SH   SOLE   165,465 0 0
NOBLE CORP PLC ORD SHS A G65431127 BBG018KBK3G8 742,023 14,650 SH   SOLE   14,650 0 0
NOVO-NORDISK A S ADR 670100205 BBG000BQBKR3 343,753 3,780 SH   SOLE   3,780 0 0
PERMIAN BASIN RTY TR UNIT BEN INT 714236106 BBG000BQV317 579,063 27,250 SH   SOLE   27,250 0 0
PHILLIPS 66 COM 718546104 BBG00286S4N9 20,426 170 SH   SOLE   170 0 0
PTC INC COM 69370C100 BBG000C2VBB0 9,073,896 64,045 SH   SOLE   64,045 0 0
QUANTA SVCS INC COM 74762E102 BBG000BBL8V7 224,484 1,200 SH   SOLE   1,200 0 0
RENAISSANCERE HLDGS LTD COM G7496G103 BBG000BFVZ83 5,797,077 29,290 SH   SOLE   29,290 0 0
RIVIAN AUTOMOTIVE INC COM CL A 76954A103 BBG00741Y1N2 53,416 2,200 SH   SOLE   2,200 0 0
ROYALTY PHARMA PLC SHS CLASS A G7709Q104 BBG00V1L5YZ5 1,056,560 38,930 SH   SOLE   38,930 0 0
RXO INC COMMON STOCK 74982T103 BBG0160DYCH4 2,984,557 151,270 SH   SOLE   151,270 0 0
SEAGEN INC COM 81181C104 BBG000BH0FR6 7,817,728 36,850 SH   SOLE   36,850 0 0
SITIO ROYALTIES CORP CLASS A COM 82983N108 BBG01C36Y855 728,237 30,080 SH   SOLE   30,080 0 0
SPDR GOLD TR GOLD SHS 78463V107 BBG000CRF6Q8 111,443 650 SH   SOLE   650 0 0
ST JOE CO COM 790148100 BBG000D6TC94 697,326 12,835 SH   SOLE   12,835 0 0
STEREOTAXIS INC COM NEW 85916J409 BBG000PSJBC2 5,134,660 3,249,785 SH   SOLE   3,249,785 0 0
TEXAS PACIFIC LAND CORPORATI COM 88262P102 BBG00YRJXKB1 35,878,543 19,675 SH   SOLE   19,675 0 0
TRANSMEDICS GROUP INC COM 89377M109 BBG00NZ6J685 1,256,513 22,950 SH   SOLE   22,950 0 0
TRUPANION INC COM 898202106 BBG002BC7WC5 6,790,137 240,785 SH   SOLE   240,785 0 0
UBIQUITI INC COM 90353W103 BBG001R72SR9 3,502,166 24,103 SH   SOLE   24,103 0 0
VOLITIONRX LTD COM 928661107 BBG000BQWFH2 2,675,284 3,882,850 SH   SOLE   3,882,850 0 0
XPO INC COM 983793100 BBG000L5CJF3 7,412,245 99,280 SH   SOLE   99,280 0 0