EXHIBIT 11.1 CROWN CASTLE INTERNATIONAL CORP. COMPUTATION OF NET LOSS PER COMMON SHARE (IN THOUSANDS OF DOLLARS, EXCEPT PER SHARE AMOUNTS) THREE MONTHS NINE MONTHS ENDED SEPTEMBER 30, ENDED SEPTEMBER 30, -------------------- --------------------- 2001 2002 2001 2002 -------- -------- -------- --------- Net loss...................................... $(110,330) $ (65,628) $(263,118) $(237,619) Dividends on preferred stock.................. (19,000) (19,874) (58,770) (60,840) Gains on repurchases of preferred stock....... -- 49,806 -- 49,806 --------- --------- --------- --------- Net loss applicable to common stock for basic and diluted computations..................... $(129,330) $ (35,696) $(321,888) $(248,653) ========= ========= ========= ========= Weighted-average number of common shares outstanding during the period for basic and diluted computations (in thousands).......... 214,986 216,656 213,413 218,991 ========= ========= ========= ========= Loss per common share - basic and diluted.... $ (0.60) $ (0.16) $ (1.51) $ (1.14) ========= ========= ======== =========