EXHIBIT 11.1
AMERICAN MOBILE SATELLITE CORPORATION
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COMPUTATIONS OF EARNINGS PER COMMON SHARE
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(in thousands, except per share amounts)
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Three Months
Ended March 31,
1998 1997
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BASIC EARNINGS PER SHARE CALCULATION
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Net Loss ($25,242) ($27,081)
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Net Loss per common share ($1.00) ($1.08)
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Weighted-average common shares 25,241 25,109
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DILUTED EARNINGS PER SHARE CALCULATION
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Net Loss ($25,242) ($27,081)
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Net Loss per common share ($1.00) ($1.08)
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Weighted-average common shares (1) 25,336 25,188
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(1) Calculated as follows:
Historical weighted average number of
shares outstanding 25,241 25,109
Assumed exercise of stock options 33 17
Assumed exercise of stock purchase 62 62
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25,336 25,188
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