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
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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 13,144 3,167,322 SH   SOLE n/a 3,167,322 0 0
BOK Financial Common 05561Q201 212,152 2,710,518 SH   SOLE n/a 2,710,518 0 0
Allergan PLC Common G0177J108 1,285 5,378 SH   OTR n/a 0 0 5,378
Berkshire Hathaway Inc. CL B Common 084670702 2,325 13,948 SH   OTR n/a 0 0 13,948
Calpine Corporation Common 131347304 1,029 93,118 SH   OTR n/a 0 0 93,118
Cimpress N.V. Common N20146101 1,428 16,573 SH   OTR n/a 0 0 16,573
Commerce Hub Inc. Common 20084V306 546 35,169 SH   OTR n/a 0 0 35,169
JPMorgan Chase & Co Common 46625H100 3,079 35,056 SH   OTR n/a 0 0 35,056
Liberty Broadband Corp Common 530307305 3,159 36,557 SH   OTR n/a 0 0 36,557
Liberty Global - Series C Common G5480U120 1,469 41,936 SH   OTR n/a 0 0 41,936
Liberty Global- Lilac Series A Common G5480U138 531 23,860 SH   OTR n/a 0 0 23,860
Liberty Interactive Corporation QVC Group Ser A Common 53071M104 1,249 62,400 SH   OTR n/a 0 0 62,400
Liberty Media Corp Series C Sirius XM Group Common 531229607 1,204 31,038 SH   OTR n/a 0 0 31,038
Moodys Corp Common 615369105 1,029 9,181 SH   OTR n/a 0 0 9,181
Microsoft Corp Common 594918104 1,810 27,481 SH   OTR n/a 0 0 27,481
S&P Global Inc. Common 78409V104 1,330 10,170 SH   OTR n/a 0 0 10,170