1 EXHIBIT 11 NANOPHASE TECHNOLOGIES CORPORATION STATEMENT REGARDING COMPUTATION OF LOSS PER SHARE (UNAUDITED) THREE MONTHS ENDED MARCH 31, ---------------------------- 2000 1999 ------------- ----------- HISTORICAL: Weighted average common shares outstanding 13,008,964 2,593,718 ============= =========== Net loss $ (1,434,559) $1,575,902) ============= =========== Net loss per common share $ (0.11) $ (0.13) ============= ===========