Exhibit 11 THERMO FIBERTEK INC. Computation of Earnings per Share Three Months Ended Six Months Ended ------------------------ ------------------------- June 28, June 29, June 28, June 29, 1997 1996 1997 1996 ------------------------------------------------------------------------------ Computation of Fully Diluted Earnings per Share: Income: Net income $ 3,759,000 $ 4,876,000 $ 7,219,000 $10,082,000 Add: Convertible debt interest, net of tax 79,000 79,000 158,000 158,000 ----------- ----------- ----------- ----------- Income applicable to common stock assuming full dilution (a) $ 3,838,000 $ 4,955,000 $ 7,377,000 $10,240,000 ----------- ----------- ----------- ----------- Shares: Weighted average shares outstanding 61,243,944 61,025,586 61,192,220 60,980,052 Add: Shares issuable from assumed conversion of subordinated convertible obligation 1,888,113 1,888,113 1,888,113 1,888,113 Shares issuable from assumed exercise of options (as determined by the applica- tion of the treasury stock method) 1,098,029 1,546,548 1,129,212 1,546,548 ----------- ----------- ----------- ----------- Weighted average shares outstanding, as adjusted (b) 64,230,086 64,460,247 64,209,545 64,414,713 ----------- ----------- ----------- ----------- Fully Diluted Earnings per Share (a) / (b) $ .06 $ .08 $ .11 $ .16 =========== =========== =========== ===========