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 18,186 160 SH   SOLE   160 0 0
ALPHABET INC CAP STK CL A 02079K305 BBG009S39JX6 198,473 1,315 SH   SOLE   1,315 0 0
ALPHABET INC CAP STK CL C 02079K107 BBG009S3NB30 7,927,417 52,065 SH   SOLE   52,065 0 0
BERKSHIRE HATHAWAY INC DEL CL A 084670108 BBG000DWCFL4 1,268,880 2 SH   SOLE   2 0 0
BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 BBG000DWG505 868,374 2,065 SH   SOLE   2,065 0 0
CME GROUP INC COM 12572Q105 BBG000BHLYP4 333,700 1,550 SH   SOLE   1,550 0 0
CONOCOPHILLIPS COM 20825C104 BBG000BQQH30 101,824 800 SH   SOLE   800 0 0
CORPAY INC COM SHS 219948106 BBG000GPXKX9 344,948 1,118 SH   SOLE   1,118 0 0
DARLING INGREDIENTS INC COM 237266101 BBG000BN8ZK8 441,845 9,500 SH   SOLE   9,500 0 0
DIGIMARC CORP NEW COM 25381B101 BBG000G9F1Z5 18,587,723 683,875 SH   SOLE   683,875 0 0
EATON CORP PLC SHS G29183103 BBG000BJ3PD2 630,050 2,015 SH   SOLE   2,015 0 0
ENERGY RECOVERY INC COM 29270J100 BBG000VFBBC1 2,048,200 129,715 SH   SOLE   129,715 0 0
ENSTAR GROUP LIMITED SHS G3075P101 BBG000NQKP71 7,255,314 23,347 SH   SOLE   23,347 0 0
EXXON MOBIL CORP COM 30231G102 BBG000GZQ728 464,960 4,000 SH   SOLE   4,000 0 0
FRANCO NEV CORP COM 351858105 BBG000RD3CL8 165,275 1,387 SH   SOLE   1,387 0 0
GXO LOGISTICS INCORPORATED COMMON STOCK 36262G101 BBG00YDGX945 7,271,309 135,255 SH   SOLE   135,255 0 0
HEICO CORP NEW COM 422806109 BBG000BL16Q7 797,425 4,175 SH   SOLE   4,175 0 0
MASTERCARD INCORPORATED CL A 57636Q104 BBG000F1ZSQ2 1,051,749 2,184 SH   SOLE   2,184 0 0
MICROSOFT CORP COM 594918104 BBG000BPH459 557,454 1,325 SH   SOLE   1,325 0 0
NATERA INC COM 632307104 BBG001J1BQ86 12,146,803 132,810 SH   SOLE   132,810 0 0
NOBLE CORP PLC ORD SHS A G65431127 BBG018KBK3G8 797,661 16,450 SH   SOLE   16,450 0 0
NOVO-NORDISK A S ADR 670100205 BBG000BQBKR3 485,352 3,780 SH   SOLE   3,780 0 0
PERMIAN BASIN RTY TR UNIT BEN INT 714236106 BBG000BQV317 366,933 30,325 SH   SOLE   30,325 0 0
PHILLIPS 66 COM 718546104 BBG00286S4N9 27,768 170 SH   SOLE   170 0 0
PTC INC COM 69370C100 BBG000C2VBB0 11,587,690 61,330 SH   SOLE   61,330 0 0
QUANTA SVCS INC COM 74762E102 BBG000BBL8V7 301,368 1,160 SH   SOLE   1,160 0 0
RENAISSANCERE HLDGS LTD COM G7496G103 BBG000BFVZ83 6,398,692 27,225 SH   SOLE   27,225 0 0
RIVIAN AUTOMOTIVE INC COM CL A 76954A103 BBG00741Y1N2 71,175 6,500 SH   SOLE   6,500 0 0
RXO INC COMMON STOCK 74982T103 BBG0160DYCH4 3,548,954 162,275 SH   SOLE   162,275 0 0
SITIO ROYALTIES CORP CLASS A COM 82983N108 BBG01C36Y855 760,882 30,780 SH   SOLE   30,780 0 0
SPDR GOLD TR GOLD SHS 78463V107 BBG000CRF6Q8 133,718 650 SH   SOLE   650 0 0
ST JOE CO COM 790148100 BBG000D6TC94 845,492 14,585 SH   SOLE   14,585 0 0
STEREOTAXIS INC COM NEW 85916J409 BBG000PSJBC2 9,989,331 3,827,330 SH   SOLE   3,827,330 0 0
TAIWAN SEMICONDUCTOR MFG LTD SPONSORED ADS 874039100 BBG000BD8ZK0 1,844,838 13,560 SH   SOLE   13,560 0 0
TEXAS PACIFIC LAND CORPORATI COM 88262P102 BBG00YRJXKB1 33,115,648 57,243 SH   SOLE   57,243 0 0
TRANSMEDICS GROUP INC COM 89377M109 BBG00NZ6J685 4,815,343 65,125 SH   SOLE   65,125 0 0
TRUPANION INC COM 898202106 BBG002BC7WC5 8,367,211 303,050 SH   SOLE   303,050 0 0
UBIQUITI INC COM 90353W103 BBG001R72SR9 3,112,079 26,863 SH   SOLE   26,863 0 0
VOLITIONRX LTD COM 928661107 BBG000BQWFH2 3,840,444 5,073,242 SH   SOLE   5,073,242 0 0
XPO INC COM 983793100 BBG000L5CJF3 10,107,745 82,830 SH   SOLE   82,830 0 0