X0306 5 2022-12-31 0 0 1 0000875357 BOK FINANCIAL CORP BOKF 0001163432 KAISER GEORGE B C/O FREDERIC DORWART, LAWYERS PLLC 124 EAST FOURTH STREET TULSA OK 74103 1 0 1 0 Common Stock 2009-02-19 4 P 0 L 1000 0.13 A 4000 I by spouse Common Stock 2009-03-03 4 P 0 L 500 0.16 A 4500 I by spouse Common Stock 2009-08-12 4 P 0 L 1000 46.31 A 5500 I by spouse Common Stock 2011-03-02 4 P 0 L 1000 51.26 A 6500 I by spouse Common Stock 2011-04-21 4 P 0 L 1976 50.63 A 8476 I by spouse Common Stock 2019-08-29 4 P 0 L 657 76.12 A 9133 I by spouse Common Stock 2019-09-19 4 P 0 L 675 74.04 A 9808 I by spouse Common Stock 37982600 D The reporting person undertakes to provide to BOK Financial Corporation, any security holder of BOK Financial Corporation, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the ranges set forth in footnotes (3) through (8) to this Form 5. Mr. Kaiser disclaims beneficial ownership of these shares and the inclusion of these shares in this report shall not be deemed an admission of beneficial ownership of these shares for purposes of Section 16 or for any other purpose. The price reported in Column 4 is a weighted price. The shares were purchased in multiple transactions at prices ranging from $0.08 to $0.31, inclusive. The price reported in Column 4 is a weighted price. The shares were purchased in multiple transactions at prices ranging from $0.14 to $0.27, inclusive. The price reported in Column 4 is a weighted price. The shares were purchased in multiple transactions at prices ranging from $46.31 to $46.33, inclusive. The price reported in Column 4 is a weighted price. The shares were purchased in multiple transactions at prices ranging from $51.25 to $51.27, inclusive. The price reported in Column 4 is a weighted price. The shares were purchased in multiple transactions at prices ranging from $50.56 to $50.85, inclusive. The price reported in Column 4 is a weighted price. The shares were purchased in multiple transactions at prices ranging from $74.04 to $74.06, inclusive. /s/ Tamara Wagman, Power of Attorney 2023-02-14