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
SABRE CORP 4 CONVERT DUE 04/15/2025 Convertible Bonds 78573NAE2   1,136,085 1,150,000 PRN   SOLE 0 1,150,000 0 0
APPLE INC. Common Stocks 037833100   43,286,973 185,781 SH   SOLE 0 185,781 0 0
ABBVIE INC COM Common Stocks 00287Y109   6,110,426 30,942 SH   SOLE 0 30,942 0 0
ABBOTT LABORATORIES Common Stocks 002824100   3,622,668 31,775 SH   SOLE 0 31,775 0 0
ACCENTURE PLC Common Stocks G1151C101   9,190,833 26,001 SH   SOLE 0 26,001 0 0
ALLY FINL INC Common Stocks 02005N100   2,700,213 75,870 SH   SOLE 0 75,870 0 0
AMGEN INC Common Stocks 031162100   6,170,322 19,150 SH   SOLE 0 19,150 0 0
AMAZON COM INC Common Stocks 023135106   1,771,998 9,510 SH   SOLE 0 9,510 0 0
AMERICAN EXPRESS COMPANY Common Stocks 025816109   2,943,062 10,852 SH   SOLE 0 10,852 0 0
BECTON DICKINSON&CO Common Stocks 075887109   2,040,188 8,462 SH   SOLE 0 8,462 0 0
BRISTOL-MYERS SQUIBB CO Common Stocks 110122108   18,513,710 357,822 SH   SOLE 0 357,822 0 0
BERKSHIRE HTWY CLASS A Common Stocks 084670108   691,180 1 SH   SOLE 0 1 0 0
BERKSHIRE HATHAWAY CLASS B Common Stocks 084670702   460,720 1,001 SH   SOLE 0 1,001 0 0
BLACK STONE MINERALS LP Common Stocks 09225M101   20,478,212 1,356,173 SH   SOLE 0 1,356,173 0 0
ANHEUSER-BUSCH INBEV SA Common Stocks 03524A108   23,124,140 348,833 SH   SOLE 0 348,833 0 0
CHECK POINT SOFTWARE TECH Common Stocks M22465104   24,205,946 125,543 SH   SOLE 0 125,543 0 0
COLGATE PALMOLIVE Common Stocks 194162103   3,179,700 30,630 SH   SOLE 0 30,630 0 0
CISCO SYSTEMS, INC. Common Stocks 17275R102   1,117,301 20,994 SH   SOLE 0 20,994 0 0
CVS HEALTH CORP Common Stocks 126650100   2,837,334 45,123 SH   SOLE 0 45,123 0 0
DESPEGAR.COM Common Stocks G27358103   2,461,400 198,500 SH   SOLE 0 198,500 0 0
DORCHESTER MINERALS LP Common Stocks 25820R105   902,842 29,945 SH   SOLE 0 29,945 0 0
EBAY INC Common Stocks 278642103   1,940,669 29,806 SH   SOLE 0 29,806 0 0
ENTERPRISE PRODUCTS PRTNS Common Stocks 293792107   34,892,236 1,198,634 SH   SOLE 0 1,198,634 0 0
FIRSTCASH HLDGS INC Common Stocks 33768G107   851,816 7,420 SH   SOLE 0 7,420 0 0
FORTREA HOLDINGS INC. Common Stocks 34965K107   21,943,920 1,097,196 SH   SOLE 0 1,097,196 0 0
SPDR GOLD TRUST Common Stocks 78463V107   2,003,544 8,243 SH   SOLE 0 8,243 0 0
ALPHABET INC CL C (GOOGLE C) Common Stocks 02079K107   82,326,848 492,415 SH   SOLE 0 492,415 0 0
ALPHABET INC CL A (GOOGLE A) Common Stocks 02079K305   28,522,717 171,979 SH   SOLE 0 171,979 0 0
GOLDMAN SACHS ACTVBETA Common Stocks 381430503   225,880 2,000 SH   SOLE 0 2,000 0 0
HOME DEPOT INC Common Stocks 437076102   424,650 1,048 SH   SOLE 0 1,048 0 0
HONEYWELL INTL INC Common Stocks 438516106   2,358,975 11,412 SH   SOLE 0 11,412 0 0
IDEXX LABS INC. Common Stocks 45168D104   404,176 800 SH   SOLE 0 800 0 0
ISHARES TOTAL US STOCK Common Stocks 464287150   376,860 3,000 SH   SOLE 0 3,000 0 0
JOHNSON & JOHNSON Common Stocks 478160104   6,807,492 42,006 SH   SOLE 0 42,006 0 0
JP MORGAN CHASE & CO Common Stocks 46625H100   500,371 2,373 SH   SOLE 0 2,373 0 0
KIMBERLY-CLARK CORPORATION Common Stocks 494368103   1,965,883 13,817 SH   SOLE 0 13,817 0 0
KINDER MORGAN, INC. Common Stocks 49456B101   39,776,889 1,800,674 SH   SOLE 0 1,800,674 0 0
COCA-COLA CO Common Stocks 191216100   6,159,336 85,713 SH   SOLE 0 85,713 0 0
LEADING EDGE MATERIALS F Common Stocks 52171T100   6,971 84,500 SH   SOLE 0 84,500 0 0
ELI LILLY & CO. Common Stocks 532457108   2,006,654 2,265 SH   SOLE 0 2,265 0 0
LOCKHEED MARTIN CORP Common Stocks 539830109   27,439,831 46,941 SH   SOLE 0 46,941 0 0
LAS VEGAS SANDS Common Stocks 517834107   20,378,639 404,820 SH   SOLE 0 404,820 0 0
MASTERCARD INC. CL A Common Stocks 57636Q104   489,356 991 SH   SOLE 0 991 0 0
MCDONALDS CORP. Common Stocks 580135101   6,471,751 21,253 SH   SOLE 0 21,253 0 0
MICROSOFT CORPORATION Common Stocks 594918104   11,999,346 27,886 SH   SOLE 0 27,886 0 0
MATCH GROUP INC. Common Stocks 57667L107   17,803,682 470,499 SH   SOLE 0 470,499 0 0
METTLER TOLEDO INTL Common Stocks 592688105   4,853,029 3,236 SH   SOLE 0 3,236 0 0
MATADOR RESOURCES CO. Common Stocks 576485205   1,482,600 30,000 SH   SOLE 0 30,000 0 0
NIKE, INC. Common Stocks 654106103   5,482,745 62,022 SH   SOLE 0 62,022 0 0
NVIDIA CORP Common Stocks 67066G104   72,646,622 598,210 SH   SOLE 0 598,210 0 0
ORACLE CORP Common Stocks 68389X105   219,816 1,290 SH   SOLE 0 1,290 0 0
PAYCHEX INC. Common Stocks 704326107   789,171 5,881 SH   SOLE 0 5,881 0 0
PEPSICO INC Common Stocks 713448108   4,850,336 28,523 SH   SOLE 0 28,523 0 0
PFIZER INC Common Stocks 717081103   2,946,960 101,830 SH   SOLE 0 101,830 0 0
PROCTER & GAMBLE Common Stocks 742718109   4,665,488 26,937 SH   SOLE 0 26,937 0 0
PAYPAL HOLDINGS, INC. Common Stocks 70450Y103   48,769,920 625,015 SH   SOLE 0 625,015 0 0
QUALCOMM INC Common Stocks 747525103   32,646,369 191,981 SH   SOLE 0 191,981 0 0
ROIVANT SCIENCES LTD. Common Stocks G76279101   18,835,519 1,632,194 SH   SOLE 0 1,632,194 0 0
RTX CORP. Common Stocks 75513E101   24,359,097 201,049 SH   SOLE 0 201,049 0 0
STARBUCKS CORP. Common Stocks 855244109   2,786,167 28,579 SH   SOLE 0 28,579 0 0
SPROUTS FARMERS MARKET INC Common Stocks 85208M102   37,342,208 338,214 SH   SOLE 0 338,214 0 0
SHELL PLC Common Stocks 780259305   33,333,306 505,433 SH   SOLE 0 505,433 0 0
SIRIUSXM HOLDINGS INC. Common Stocks 829933100   16,094,913 680,546 SH   SOLE 0 680,546 0 0
SPDR S & P 500 ETF Common Stocks 78462F103   580,904 1,012 SH   SOLE 0 1,012 0 0
TOAST INC Common Stocks 888787108   212,325 7,500 SH   SOLE 0 7,500 0 0
TRAVELERS COMPANIES Common Stocks 89417E109   218,434 933 SH   SOLE 0 933 0 0
TESLA MOTORS INC. Common Stocks 88160R101   415,992 1,590 SH   SOLE 0 1,590 0 0
TEXAS INSTRUMENTS INC Common Stocks 882508104   8,628,842 41,772 SH   SOLE 0 41,772 0 0
UNITEDHEALTH GROUP INC. Common Stocks 91324P102   32,427,522 55,462 SH   SOLE 0 55,462 0 0
UNITED PARCEL SVC INC. CL B Common Stocks 911312106   4,503,174 33,029 SH   SOLE 0 33,029 0 0
U S PHYSICAL THERAPY Common Stocks 90337L108   2,551,510 30,149 SH   SOLE 0 30,149 0 0
VISA, INC. Common Stocks 92826C839   955,726 3,476 SH   SOLE 0 3,476 0 0
VANGUARD S&P 500 ETF Common Stocks 922908363   823,165 1,560 SH   SOLE 0 1,560 0 0
VERIZON COMMUNICATIONS Common Stocks 92343V104   4,133,157 92,032 SH   SOLE 0 92,032 0 0
WASTE MANGEMENT INC Common Stocks 94106L109   12,047,028 58,030 SH   SOLE 0 58,030 0 0
EXXON MOBIL CORP Common Stocks 30231G102   1,390,112 11,859 SH   SOLE 0 11,859 0 0
XYLEM INC. Common Stocks 98419M100   13,103,716 97,043 SH   SOLE 0 97,043 0 0