1 EXHIBIT 99.11 STOCK PURCHASE AGREEMENT THIS AGREEMENT is entered into effective the 18th day of November, 1999, among AUBREY K. McCLENDON, an individual ("McClendon"), with a notice address at 6100 North Western, Oklahoma City, Oklahoma 73118,...Stock Purchase Agreement • December 17th, 1999 • McClendon Aubrey K • Crude petroleum & natural gas • Oklahoma
JOINT FILING AGREEMENTJoint Filing Agreement • December 17th, 1999 • McClendon Aubrey K • Crude petroleum & natural gas
