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
BERKSHIRE HATHAWAY INC DEL CL A 084670108   35,385,600 76 SH   SOLE   76 0 0
BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702   339,648 1,100 SH   SOLE   1,100 0 0
AEROVATE THERAPEUTICS INC COM 008064107   266,042 13,190 SH   SOLE   13,190 0 0
AIRBNB INC COM CL A 009066101   5,552,345 44,633 SH   SOLE   44,633 0 0
AMPLITUDE INC COM CL A 03213A104   471,327 37,888 SH   SOLE   37,888 0 0
CONFLUENT INC CLASS A COM 20717M103   3,138,295 130,382 SH   SOLE   130,382 0 0
COURSERA INC COM 22266M104   180,979 15,710 SH   SOLE   15,710 0 0
RAPT THERAPEUTICS INC COM 75382E109   1,478,643 80,580 SH   SOLE   80,580 0 0
TRANSDIGM GROUP INC COM 893641100   2,287,066 3,103 SH   SOLE   3,103 0 0
EVELO BIOSCIENCES INC COM 299734103   20,607 113,850 SH   SOLE   113,850 0 0
VOR BIOPHARMA INC COM 929033108   494,476 91,910 SH   SOLE   91,910 0 0
DISC MEDICINE INC COM 254604101   2,341,241 110,488 SH   SOLE   110,488 0 0
XILIO THERAPEUTICS INC COM 98422T100   791,343 249,635 SH   SOLE   249,635 0 0
VIGIL NEUROSCIENCE INC COM 92673K108   1,889,206 192,973 SH   SOLE   192,973 0 0
SURROZEN INC COM 86889P109   432,808 718,950 SH   SOLE   250,556 0 0
SURROZEN INC *W EXP 08/01/2 86889P117   2,683 33,333 SH   SOLE   33,333 0 0
TENAYA THERAPEUTICS INC COM 87990A106   831,710 291,828 SH   SOLE   40,218 0 0