The Securities and Exchange Commission has not necessarily reviewed the information in this filing and has not determined if it is accurate and complete. | |||||||||||||||||
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UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 13F FORM 13F INFORMATION TABLE |
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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 | (x$1000) | PRN AMT | PRN | CALL | DISCRETION | MANAGER | SOLE | SHARED | NONE |
| BERKSHIRE HATHAWAY INC DEL | CL A | 084670108 | 141,884 | 455 | SH | OTR | 1 | 0 | 455 | 0 | |
| BERKSHIRE HATHAWAY INC DEL | CL B NEW | 084670702 | 8,571 | 41,202 | SH | SOLE | 0 | 41,202 | 0 | 0 | |
| BLACK STONE MINERALS L P | COM UNIT | 09225M101 | 35,720 | 2,508,475 | SH | SOLE | 0 | 2,508,475 | 0 | 0 | |
| APTINYX INC | COM | 03836N103 | 381 | 109,280 | SH | SOLE | 0 | 109,280 | 0 | 0 | |
| PLAINS ALL AMERN PIPELINE L | UNIT LTD PARTN | 726503105 | 5,839 | 281,376 | SH | SOLE | 0 | 281,376 | 0 | 0 | |