EXHIBIT 11.1
AMERICAN MOBILE SATELLITE CORPORATION
COMPUTATIONS OF EARNINGS PER COMMON SHARE
(in thousands, except per share amounts)
Year Ended December 31,
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1997 1996 1995
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BASIC EARNINGS PER SHARE CALCULATION
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Net Loss ($119,207) ($134,638) ($66,917)
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Net Loss per common share ($4.74) ($5.38) ($2.69)
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Weighted-average common shares outstanding 25,131 25,041 24,900
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DILUTED EARNINGS PER SHARE CALCULATION
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Net Loss (1) ($119,207) ($129,244) ($66,917)
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Net Loss per common share ($4.73) ($5.13) ($2.65)
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Weighted-average common shares outstanding (2) 25,197 25,179 25,278
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(1) Calculated as follows: 1997 1996 1995
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Primary net loss ($119,207) ($134,638) ($66,917)
Amortization of debt discount -- 2,253 --
Interest on convertible debt -- 3,141 --
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($119,207) ($129,244) ($66,917)
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(2) Calculated as follows:
Historical weighted average number of shares 25,131 25,041 24,900
Assumed exercise of stock options 2 63 92
Assumed exercise of stock purchase 64 75 286
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warrants
25,197 25,179 25,278
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