IGEN, INC. EXHIBIT 11.1 STATEMENT RE: COMPUTATION OF NET EARNINGS PER SHARE (IN THOUSANDS, EXCEPT PER SHARE DATA) THREE MONTHS ENDED JUNE 30, 1996 1995 -------- -------- Weighted Average Common Shares Outstanding 14,924 14,731 -------- -------- Net Loss $ (1,524) $ (1,841) ======== ======== Net Loss per share $ (.10) $ (.12) ======== ======== 13