EXHIBIT 11.1 STATEMENT REGARDING COMPUTATION OF PER SHARE EARNINGS ----------------------------------------------------- The following schedules reflect the information used in calculating the number of shares in the computation of net loss per share for each of the periods set forth in the Statements of Operations. 1 ENERGY BIOSYSTEMS CORPORATION COMPUTATION OF PER SHARE EARNINGS FOR THE THREE MONTHS ENDED MARCH 31, 1997 WEIGHTED AVERAGE SHARES OUTSTANDING: TOTAL # DAYS SHARES OUTSTANDING - ---------------------------------------------------- 11,497,135 x 15 = 172,457,025 11,502,135 x 1 = 11,502,135 11,502,235 x 7 = 80,515,645 11,502,395 x 18 = 207,043,110 11,505,395 x 8 = 92,043,160 11,506,053 x 13 = 149,578,689 11,507,163 x 6 = 69,042,978 11,605,377 x 22 = 255,378,294 -- ------------- 90 1,037,561,036 11,528,456 ========== FOR THE THREE MONTHS ENDED MARCH 31, 1997 LOSS PER SHARE: Net Loss plus dividend accrual plus accretion of offering costs ($2,870,560) = ($0.25) - --------------------------------- ---------------- ========== Weighted Avg. Shares 11,528,456 2 ENERGY BIOSYSTEMS CORPORATION COMPUTATION OF PER SHARE EARNINGS FOR THE THREE MONTHS ENDED MARCH 31, 1996 WEIGHTED AVERAGE SHARES OUTSTANDING: TOTAL # DAYS SHARES OUTSTANDING - ---------------------------------------------------- 10,584,268 x 23 = 243,438,164 11,107,568 x 14 = 155,505,952 11,139,268 x 27 = 300,760,236 11,140,768 x 8 = 89,126,144 11,142,868 x 19 = 211,714,492 -- ------------- 91 1,000,544,988 10,995,000 ============ FOR THE THREE MONTHS ENDED MARCH 31, 1996 LOSS PER SHARE: Net Loss plus dividend accrual plus accretion of offering costs ($2,503,079) = ($0.23) ---------------- ============ Weighted Avg. Shares 10,995,000 3