EXHIBIT 11 Borg-Warner Security Corporation Computation of Per Share Earnings Year Ended December 31, (in thousands) -------------------------- 1994 1995 1996 ------ ------ ------ Average common shares outstanding 22,893 23,097 23,266 Common stock equivalents 277 302 251 ------ ------ ------ Shares used in computation of per share earnings 23,170 23,399 23,517 ====== ====== ======