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   39,353,560 76 SH   SOLE   76 0 0
BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702   375,100 1,100 SH   SOLE   1,100 0 0
AIRBNB INC COM CL A 009066101   10,630,488 82,947 SH   SOLE   82,947 0 0
AMPLITUDE INC COM CL A 03213A104   208,384 18,944 SH   SOLE   18,944 0 0
CONFLUENT INC CLASS A COM 20717M103   4,603,824 130,383 SH   SOLE   130,383 0 0
COURSERA INC COM 22266M104   204,544 15,710 SH   SOLE   15,710 0 0
DISC MEDICINE INC COM 254604101   4,905,667 110,488 SH   SOLE   110,488 0 0
KANZHUN LIMITED SPONSORED ADS 48553T106   1,235,349 82,083 SH   SOLE   82,083 0 0
PROGYNY INC COM 74340E103   469,838 11,943 SH   SOLE   11,943 0 0
RAPT THERAPEUTICS INC COM 75382E109   1,372,262 73,383 SH   SOLE   73,383 0 0
SURROZEN INC COM 86889P109   395,423 718,950 SH   SOLE   718,950 0 0
SURROZEN INC *W EXP 08/01/2 86889P117   1,833 33,333 SH   SOLE   33,333 0 0
TENAYA THERAPEUTICS INC COM 87990A106   1,713,031 291,828 SH   SOLE   291,828 0 0
VIGIL NEUROSCIENCE INC COM 92673K108   1,813,946 192,973 SH   SOLE   192,973 0 0
VOR BIOPHARMA INC COM 929033108   284,002 91,910 SH   SOLE   91,910 0 0
XILIO THERAPEUTICS INC COM 98422T100   654,044 249,635 SH   SOLE   249,635 0 0