Simpson Manufacturing Co., Inc. and Subsidiaries Computation of Earnings Per Common Share (Unaudited) Exhibit 11 -------------------- Primary Earnings per Share Three Months Ended March 31, 1996 1995 ------------ ------------ Weighted average number of common shares outstanding 11,390,002 11,275,196 Shares issuable pursuant to employee stock option plans, less shares assumed repurchased at the average fair value during the period 228,992 113,933 Shares issuable pursuant to the independent director stock option plan, less shares assumed repurchased at the average fair value during the period 2,435 130 ------------ ------------ Number of shares for computation of primary net income per share 11,621,429 11,389,259 ============ ============ Net income $ 3,262,504 $ 2,409,417 ============ ============ Primary net income per share $ 0.28 $ 0.21 ============ ============ Simpson Manufacturing Co., Inc. and Subsidiaries Computation of Earnings Per Common Share (Unaudited) Exhibit 11 -------------------- Fully Diluted Earnings per Share Three Months Ended March 31, 1996 1995 ------------ ------------ Weighted average number of common shares outstanding 11,390,002 11,275,196 Shares issuable pursuant to employee stock option plans, less shares assumed repurchased at the end of period fair value 276,020 110,716 Shares issuable pursuant to the independent director stock option plan, less shares assumed repurchased at the end of period fair value 2,921 - ------------ ------------ Number of shares for computation of fully diluted net income per share 11,668,943 11,385,912 ============ ============ Net income $ 3,262,504 $ 2,409,417 ============ ============ Fully diluted net income per share $ 0.28 $ 0.21 ============ ============