EXHIBIT 11 Alabama National BanCorporation Computation of Earnings Per Share (Unaudited) (In thousands, except per share amounts) ---------------------------------------- Per Share Income Shares Amount Three months ended September 30, 1998 Basic EPS net income ......................... $ 4,358 9,267 $ 0.47 ========== Effect of dilutive securities options ........ -- 239 --------- --------- Diluted EPS .................................. $ 4,358 9,506 $ 0.46 ========= ========= ========== Three months ended September 30, 1997 Basic EPS net income ......................... $ 3,562 9,173 $ 0.39 ========== Effect of dilutive securities options ........ -- 292 --------- --------- Diluted EPS .................................. $ 3,562 9,465 $ 0.38 ========= ========= ========== Nine months ended September 30, 1998 Basic EPS net income ......................... $12,475 9,221 $ 1.35 ========== Effect of dilutive securities options ........ -- 262 --------- --------- Diluted EPS .................................. $12,475 9,483 $ 1.32 ========= ========= ========== Nine months ended September 30, 1997 Basic EPS net income ......................... $ 9,935 9,147 $ 1.09 ========== Effect of dilutive securities options ........ -- 302 --------- --------- Diluted EPS .................................. $ 9,935 9,449 $ 1.05 --------- --------- ----------