EXHIBIT 11 TRI-COUNTY BANCORP, INC. AND SUBSIDIARIES STATEMENT REGARDING COMPUTATION OF EARNINGS PER SHARE Three Months Ended Six Months Ended June 30, 1997 June 30, 1997 1997 1996 1997 1996 ----------------- ---------------- EARNINGS PER SHARE Net earnings available for common shares and common stock equivalent shares deemed to have a dilutive effect $243,101 $184,560 $472,041 $342,352 ======== ======== ======== ======== Primary earnings per share $0.40 $0.30 $0.78 $0.55 ===== ===== ===== ===== Fully diluted earnings per share $0.40 $0.30 $0.77 $0.55 ===== ===== ===== ===== Shares used in primary earnings per share computation Weighted average common shares outstanding 610,316 613,775 608,788 621,193 ======== ======== ======== ======== Shares used in fully diluted earnings per share computation Weighted average common shares outstanding 611,290 582,695 611,290 590,960 Additional potentially dilutive effect of stock options 36,926 31,894 36,926 31,894 -------- -------- -------- -------- 648,216 614,589 648,216 622,854 ======== ======== ======== ======== The weighted average common shares outstanding has been computed net of ESOP shares of 34,385 (1997) and 40,365 (1996).