Exhibit 11 NB&T Financial Group, Inc. and Subsidiaries Computation of Consolidated Earnings Per Common Share For the Three Months Ended March 31, 2001 and 2000 (in thousands, except shares and per share data) For the Three Months Ended March 31, ------------------- 2001 2000 Net income $ 1,445 $ 1,318 ========= ========= Weighted average common shares issued 3,205,551 3,188,314 Less-Unreleased common shares held by ESOP 9,402 13,253 --------- --------- Weighted average number of shares outstanding used in the calculation of basic earnings per common share 3,196,149 3,175,061 Add -Dilutive effect of stock options (1) 11,566 37,076 --------- --------- Adjusted weighted average number of shares outstanding used in the calculation of diluted earnings per common share 3,207,715 3,212,137 ========= ========= Basic earnings per common share $0.45 $0.42 Diluted earnings per common share 0.45 0.41 <FN> (1) There is presently no active public 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 $17.75 at March 31, 2001, and $23.00 at March 31, 2000. </FN>