EXHIBIT 11 CHESAPEAKE ENERGY CORPORATION AND SUBSIDIARIES STATEMENT OF NET INCOME PER SHARE (in thousands, except per share data) THREE MONTHS ENDED NINE MONTHS ENDED MARCH 31, MARCH 31, ------------------- ----------------- 1997 1996 1997 1996 ----- ------ ----- ------ PRIMARY INCOME PER SHARE Computation for statement of income Net income per statement of income Income before extraordinary item $ 16,105 $ 7,623 $ 41,026 $ 15,997 Extraordinary item (177) - (6,620) - -------- -------- -------- -------- Net income $ 15,928 $ 7,623 $ 34,406 $ 15,997 ======== ======== ======== ======== Weighted average Common shares outstanding 69,534 53,529 64,478 53,529 Adjustment to weighted average common shares outstanding: Add dilutive effect of: Employee Options 3,959 4,941 4,205 4,455 ------- -------- ------- -------- Weighted average common shares and common equivalent shares outstanding, as adjusted 73,493 58,470 68,683 57,984 ======= ======== ======= ======== Primary net income per common share: Income before extraordinary item $ .22 $ .13 $ .60 $ .28 Extraordinary item - - (.10) - -------- -------- -------- -------- Net income $ .22 $ .13 $ .50 $ .28 ======== ======== ======== ======== FULLY DILUTED INCOME PER SHARE Net income per statement of income Income before extraordinary item $ 16,105 $ 7,623 $ 41,026 $ 15,997 Extraordinary item (177) - (6,620) - -------- -------- -------- -------- Net income $ 15,928 $ 7,623 $ 34,406 $ 15,997 ======== ======== ======== ======== Weighted average Common shares outstanding 69,534 53,529 64,478 53,529 Adjustment to weighted average common shares outstanding: Add fully dilutive effect of: Employee Options 3,959 5,113 4,202 5,163 -------- -------- -------- -------- Weighted average common shares and common equivalent shares outstanding, as adjusted 73,493 58,642 68,680 58,692 ======== ======== ======== ======== Fully diluted net income per common share: Income before extraordinary item $ .22 $ .13 $ .60 $ .27 Extraordinary item - - (.10) - -------- -------- -------- --------- Net income $ .22 $ .13 $ .50 $ .27 ======== ======== ======== =========