EXHIBIT 11 CROWN CASTLE INTERNATIONAL CORP. COMPUTATION OF NET LOSS PER COMMON SHARE (IN THOUSANDS OF DOLLARS, EXCEPT PER SHARE AMOUNTS) YEARS ENDED DECEMBER 31, ------------------------------------------------------------ 1997 1998 1999 2000 2001 -------- -------- -------- -------- -------- Loss before extraordinary item and cumulative effect of change in accounting principle............... $(11,942) $(37,775) $ (94,347) $(203,291) $(366,167) Dividends on preferred stock........ (2,199) (5,411) (28,881) (59,469) (79,028) -------- -------- --------- --------- --------- Loss before extraordinary item and cumulative effect of change in accounting principle applicable to common stock for basic and diluted computations............... (14,141) (43,186) (123,228) (262,760) (445,195) Extraordinary item.................. -- -- -- (1,495) -- Cumulative effect of change in accounting principle............... -- -- (2,414) -- -- -------- -------- --------- --------- --------- Net loss applicable to common stock for basic and diluted computations............... $(14,141) $(43,186) $(125,642) $(264,255) $(445,195) ======== ======== ========= ========= ========= Weighted-average number of common shares outstanding during the period for basic and diluted computations (in thousands)..................... 6,238 42,518 131,466 178,588 214,246 ======== ======== ========= ========= ========= Per common share--basic and diluted: Loss before extraordinary item and cumulative effect of change in accounting principle............. $ (2.27) $ (1.02) $ (0.94) $ (1.47) $ (2.08) Extraordinary item.................. -- -- -- (0.01) -- Cumulative effect of change in accounting principle............... -- -- (0.02) -- -- -------- -------- --------- --------- --------- Net loss......................... $ (2.27) $ (1.02) $ (0.96) $ (1.48) $ (2.08) ======== ======== ========= ========= =========