Filing Type DEF 14A (SEC's EDGAR System) Company BOK Financial Corporation (Tulsa, OK) Event Date 4/29/2008 Filing Date 4/22/2008
BOk engages in routine energy hedging transactions with SemGroup, L.P.....on terms offered to customers of BOk generally. In 2007, .... SemGroup L.P. hedged 1,800,000 MMbtu and 21 million barrels of oil. On December 31, 2007, short fair value of these hedges was .... $1.03 million for SemGroup..... The value of the hedges depends on the market price of the hedged commodities, varies from day to day, and could, on any given day, be a long fair value. Mr. Kivisto, a director of BOK Financial, is President of SemGroup L.P.