Exhibit 11 NB&T Financial Group, Inc. Computation of Consolidated Earnings Per Common Share For the Three and Nine Months Ended September 30, 2001 and 2000 (in thousands, except shares and per share data) For the Three Months For the Nine Months Ended September 30, Ended September 30, 2001 2000 2001 2000 <s> <c> <c> <c> <c> Net income (loss) $ 1,388 $ (132) $ 4,369 $ 2,719 ========= ========= ========= ========= Weighted average common shares issued 3,123,308 3,204,345 3,168,952 3,194,260 Less-Unreleased common shares held by ESOP 6,785 11,357 8,227 12,301 --------- --------- --------- --------- Weighted average number of shares outstanding used in the calculation of basic earnings per common share 3,116,523 3,192,988 3,160,725 3,181,959 Add - Dilutive effect of stock options (1) 15,526 14,668 14,409 24,408 --------- --------- --------- --------- Adjusted weighted average number of shares outstanding used in the calculation of diluted earnings per common share 3,132,049 3,207,656 3,175,134 3,206,367 ========= ========= ========= ========= Basic earnings per common share $.45 $(.04) $1.38 $.85 Diluted earnings per common share .45 (.04) 1.38 .84 <FN> (1) There is presently no active trading market for the Company's shares, nor are the prices at which common shares have been traded published by any national securities association or quotation service. Fair value for earnings per common share purposes was assumed to be $18.75 at June 30, 2001, and $16.75 at September 30, 2000. </FN>