EXHIBIT 11 AMERICAN ONCOLOGY RESOURCES, INC. STATEMENT RE-COMPUTATION OF PER SHARE EARNINGS (IN THOUSANDS EXCEPT PER SHARE AMOUNTS) (UNAUDITED) THREE MONTHS SIX MONTHS ENDED JUNE 30, ENDED JUNE 30, 1997 1996 1997 1996 -------- -------- --------- -------- NET INCOME.............................. $ 5,719 $ 4,060 $10,791 $ 8,507 ======= ======= ======= ======= OUTSTANDING AT END OF PERIOD: Shares of Common Stock................ 28,650 28,342 28,650 28,342 Commitments to issue Common Stock at specific future dates................ 16,942 15,805 16,942 15,805 Effect of weighting................... (124) (261) (562) (626) ------- ------- ------- ------- 45,468 43,886 45,030 43,521 Options to purchase Common Stock........ 5,422 5,161 5,422 5,161 Effect of treasury stock method......... (2,459) (1,492) (2,540) (1,235) ------- ------- ------- ------- Total shares used in per share calculation............................ 48,431 47,555 47,912 47,447 ======= ======= ======= ======= Net income per share.................... $0.12 $ 0.09 $0.23 $ 0.18 ======= ======= ======= ======= ASSUMING FULL DILUTION: Outstanding per above................. 48,431 47,555 47,912 47,447 Additional dilution resulting from use of period end price per share if higher than average.................. 377 188 ------- ------- ------- ------- Total shares used in per share calculation............................ 48,808 47,555 48,100 47,447 ======= ======= ======= ======= Net income per share.................... $0.12 $ 0.09 $0.22 $ 0.18 ======= ======= ======= =======