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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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 14,253 3,167,322 SH   SOLE n/a 3,167,322 0 0
BOK Financial Common 05561Q201 318,247 5,826,570 SH   SOLE n/a 5,826,570 0 0
Cognizant Technology Solutions Common 192446102 4,703 75,000 SH   SOLE n/a 75,000 0 0
Berkshire Hathaway Inc. - CL B Common 084670702 1,979 13,948 SH   OTR n/a 0 0 13,948
Calpine Corporation Common 131347304 1,925 126,880 SH   OTR n/a 0 0 126,880
Cimpress N.V. Common N20146101 1,503 16,573 SH   OTR n/a 0 0 16,573
JPMorgan Chase & Co Common 46625H100 2,970 50,150 SH   OTR n/a 0 0 50,150
Liberty Broadband Corp Common 530307305 3,510 60,566 SH   OTR n/a 0 0 60,566
Liberty Global - USD0.01A Common G5480U104 590 15,337 SH   OTR n/a 0 0 15,337
Liberty Global - Series C Common G5480U120 1,981 52,729 SH   OTR n/a 0 0 52,729
Liberty Lilac Group - Series A Common G5480U153 310 8,851 SH   OTR n/a 0 0 8,851
Liberty Media Corp - Series C Common 531229300 1,182 31,038 SH   OTR n/a 0 0 31,038
Live Nation Entertainment Inc. Common 538034109 931 41,731 SH   OTR n/a 0 0 41,731
Microsoft Corp Common 594918104 3,317 60,062 SH   OTR n/a 0 0 60,062
Valeant Pharmaceuticals Common 91911K102 773 29,382 SH   OTR n/a 0 0 29,382