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## (10) Other Borrowings 

Information relating to other borrowings is summarized as follows (dollars in thousands): 

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Aggregate annual repayments of long-term debt at December 31; 2001 are as follows (in thousands): 

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Borrowings from the Federal Home Loan Bank are used for funding purposes. In accordance with policies of the Federal Home Loan Bank, BOK Financial has granted a blanket pledge of eligible assets (generally unencumbered U.S. Treasury and mortgage-backed securities, 1-4 family loans and multifamily loans) as collateral for these advances. The unused credit available to BOK Financial at December 31, 2001 pursuant to the Federal Home Loan Bank’s collateral policies is $187 million. 

BOK Financial has arevolving, unsecured credit agreement from certain banks at December 31, 2001 with available credit of $122.5 million. Interest is based on either the London Interbank Offering Rate (“LIBOR”) plus a defined margin that is determined by the principal balance outstanding and BOK Financial’s credit rating or a base rate. The base rate is defined as the greater of the daily federal funds rate plus 0.5% or the 

prime rate. Interest is paid quarterly. Facility fees are paid quarterly on the average daily undrawn commitment at a rate of 0.20% — 0.30% as determined by BOK Financial’s current debt rating. This credit agreement includes certain restrictive covenants that limit BOK Financial’s ability to borrow additional funds and to pay cash dividends on common stock. These covenants also require BOK Financial and its subsidiaries to maintain minimum capital levels and to exceed minimum net worth ratios. BOK Financial met all of the restrictive covenants at December 31, 2001. 

In 1997, BOk issued $150 million of 7.125% fixed rate subordinated debentures that mature in 2007. Interest rate swaps were used as a fair value hedge to convert the fixed interest on these debentures to a LIBOR-based floating rate. This permitted BOKk to adjust the carrying value of the subordinated debentures to fair value. In 2001, the interest rate swaps were terminated. The related market value adjustment of the subordinated debenture of $8 million will be recognized over the remaining life of the debt. 

BOK Financial issued a $30 million, seven year subordinated debenture, bearing interest at LIBOR plus 1.75%, on March 23, 2001 to its principal shareholder George B. Kaiser (“Kaiser”). 

Funds purchased generally mature within one to ninety days from the transaction date. At December 31, 2001, securities sold under agreements to repurchase totaled $1.0 billion with related accrued interest payable of $1.3 million. Additional information relating to repurchase agreements at December 31,.2001 is as follows (dollars in thousands): 

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i BOK Financial maintains control over the securities underlying overnight repurchase agreements and generally transfers control over securities underlying longer-term dealer repurchase agreements to the respective counterparty. 

