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 18,098 160 SH   SOLE   160 0 0
ALPHABET INC CAP STK CL A 02079K305 BBG009S39JX6 280,164 1,480 SH   SOLE   1,480 0 0
ALPHABET INC CAP STK CL C 02079K107 BBG009S3NB30 10,433,065 54,784 SH   SOLE   54,784 0 0
BERKSHIRE HATHAWAY INC DEL CL A 084670108 BBG000DWCFL4 1,361,840 2 SH   SOLE   2 0 0
BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 BBG000DWG505 936,023 2,065 SH   SOLE   2,065 0 0
CORPAY INC COM SHS 219948106 BBG000GPXKX9 307,962 910 SH   SOLE   910 0 0
DIGIMARC CORP NEW COM 25381B101 BBG000G9F1Z5 23,528,899 628,275 SH   SOLE   628,275 0 0
EATON CORP PLC SHS G29183103 BBG000BJ3PD2 1,543,196 4,650 SH   SOLE   4,650 0 0
ENERGY RECOVERY INC COM 29270J100 BBG000VFBBC1 2,804,319 190,770 SH   SOLE   190,770 0 0
ENSTAR GROUP LIMITED SHS G3075P101 BBG000NQKP71 2,233,417 6,935 SH   SOLE   6,935 0 0
EXXON MOBIL CORP COM 30231G102 BBG000GZQ728 389,941 3,625 SH   SOLE   3,625 0 0
GXO LOGISTICS INCORPORATED COMMON STOCK 36262G101 BBG00YDGX945 5,929,703 136,315 SH   SOLE   136,315 0 0
HEICO CORP NEW COM 422806109 BBG000BL16Q7 1,557,197 6,550 SH   SOLE   6,550 0 0
MASTERCARD INCORPORATED CL A 57636Q104 BBG000F1ZSQ2 2,082,058 3,954 SH   SOLE   3,954 0 0
MICROSOFT CORP COM 594918104 BBG000BPH459 537,413 1,275 SH   SOLE   1,275 0 0
NATERA INC COM 632307104 BBG001J1BQ86 15,380,903 97,163 SH   SOLE   97,163 0 0
NOBLE CORP PLC ORD SHS A G65431127 BBG018KBK3G8 207,240 6,600 SH   SOLE   6,600 0 0
NOVO-NORDISK A S ADR 670100205 BBG000BQBKR3 197,846 2,300 SH   SOLE   2,300 0 0
PHILLIPS 66 COM 718546104 BBG00286S4N9 19,368 170 SH   SOLE   170 0 0
PTC INC COM 69370C100 BBG000C2VBB0 10,293,043 55,980 SH   SOLE   55,980 0 0
QUANTA SVCS INC COM 74762E102 BBG000BBL8V7 349,235 1,105 SH   SOLE   1,105 0 0
RENAISSANCERE HLDGS LTD COM G7496G103 BBG000BFVZ83 6,220,250 25,000 SH   SOLE   25,000 0 0
RIVIAN AUTOMOTIVE INC COM CL A 76954A103 BBG00741Y1N2 53,200 4,000 SH   SOLE   4,000 0 0
RXO INC COMMON STOCK 74982T103 BBG0160DYCH4 3,617,601 151,745 SH   SOLE   151,745 0 0
SPDR GOLD TR GOLD SHS 78463V107 BBG000CRF6Q8 157,385 650 SH   SOLE   650 0 0
ST JOE CO COM 790148100 BBG000D6TC94 1,066,863 23,745 SH   SOLE   23,745 0 0
STEREOTAXIS INC COM NEW 85916J409 BBG000PSJBC2 9,407,588 4,126,135 SH   SOLE   4,126,135 0 0
TAIWAN SEMICONDUCTOR MFG LTD SPONSORED ADS 874039100 BBG000BD8ZK0 7,037,951 35,637 SH   SOLE   35,637 0 0
TEXAS PACIFIC LAND CORPORATI COM 88262P102 BBG00YRJXKB1 37,926,686 34,293 SH   SOLE   34,293 0 0
TRANSMEDICS GROUP INC COM 89377M109 BBG00NZ6J685 4,605,171 73,860 SH   SOLE   73,860 0 0
TRUPANION INC COM 898202106 BBG002BC7WC5 12,720,944 263,920 SH   SOLE   263,920 0 0
UBIQUITI INC COM 90353W103 BBG001R72SR9 7,091,684 21,365 SH   SOLE   21,365 0 0
VOLITIONRX LTD COM 928661107 BBG000BQWFH2 4,545,600 7,576,000 SH   SOLE   7,576,000 0 0
XPO INC COM 983793100 BBG000L5CJF3 10,075,599 76,825 SH   SOLE   76,825 0 0