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 (x$1000) PRN AMT PRN CALL DISCRETION MANAGER SOLE SHARED NONE
Aspen Aerogels Common 04523Y105 13,778 3,167,322 SH   SOLE n/a 3,167,322 0 0
BOK Financial Common 05561Q201 178,160 2,000,000 SH   SOLE n/a 2,000,000 0 0
Allergan PLC Common G0177J108 1,102 5,378 SH   OTR n/a 0 0 5,378
Berkshire Hathaway Inc. CL B Common 084670702 3,014 16,443 SH   OTR n/a 0 0 16,443
Cimpress N.V. Common N20146101 1,619 16,573 SH   OTR n/a 0 0 16,573
Comcast Corp New CL A Common 20030N101 1,380 35,875 SH   OTR   0 0 35,875
Commerce Hub Inc. Common 20084V306 751 35,169 SH   OTR n/a 0 0 35,169
Costco Wholesale Corp Common 22160K105 728 4,434 SH   OTR n/a 0 0 4,434
JPMorgan Chase & Co Common 46625H100 3,348 35,056 SH   OTR n/a 0 0 35,056
Liberty Broadband Corp Common 530307305 3,484 36,557 SH   OTR n/a 0 0 36,557
Liberty Interactive Corporation QVC Group Ser A Common 53071M104 1,910 81,050 SH   OTR n/a 0 0 81,050
Liberty Media Corp Series C Sirius XM Group Common 531229607 1,300 31,038 SH   OTR n/a 0 0 31,038
Moodys Corp Common 615369105 1,278 9,181 SH   OTR n/a 0 0 9,181
Microsoft Corp Common 594918104 2,047 27,481 SH   OTR n/a 0 0 27,481
S&P Global Inc. Common 78409V104 1,590 10,170 SH   OTR n/a 0 0 10,170
Starbucks Corp Common 855244109 1,259 23,444 SH   OTR n/a 0 0 23,444
TripAdvisor Inc Common 896945201 1,949 48,098 SH   OTR n/a 0 0 48,098