EXHIBIT 11 STERICYCLE, INC. AND SUBSIDIARIES STATEMENT RE: COMPUTATION OF PER SHARE EARNINGS (UNAUDITED) For the three months For the nine months ended September 30, ended September 30, ---------------------- ---------------------- 1997 1996 1997 1996 ---------- --------- ---------- --------- Weighted average common shares outstanding . . . . . 10,360,219 7,668,295 9,999,026 6,663,738 Assumed conversion of Safeway note . . . . . . . . . 0 98,001 0 98,001 Net effect of dilutive stock options and warrants based on the treasury stock method using the mid-point of the offering price of $9.00 per share until the initial public offering on August 23, 1996. . . . . . . . . . . . . . . . . . . . . . . . 0 436,259 0 640,177 Common stock issuable upon assumed conversion of stock options and warrants . . . . . . . . . . . 479,217 0 481,156 0 ---------- --------- ---------- --------- Total 10,839,436 8,202,555 10,480,182 7,401,916 ---------- --------- ---------- --------- ---------- --------- ---------- --------- Net income (loss) $ 529 $ (486) $ 811 $ (1,580) ---------- --------- ---------- --------- ---------- --------- ---------- --------- Per share amount $ 0.05 $ (0.06) $ 0.08 $ (0.21) ---------- --------- ---------- --------- ---------- --------- ---------- ---------