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
BOK Financial Common 05561Q201 316,714 4,775,536 SH   SOLE   4,775,536 0 0
Anadarko Petroleum Common 032511107 111,192 1,401,814 SH   SOLE   1,451,814 0 0
Unit Corporation Common 909218109 102,710 1,989,732 SH   SOLE   3,425,981 0 0
Petroleo Brasileiros Common 71654V408 30,302 2,199,000 SH   SOLE   2,199,000 0 0