EXHIBIT 11 CLX ENERGY, INC. Computation of Net Income Per Share (Unaudited) Three months ended December 31, -------------------- 2000 1999 ---- ---- Net income $ 87,458 31,414 ========== ========== Weighted average number of common shares outstanding 10,545,132 10,548,132 Common equivalent shares representing shares issuable upon exercise of outstanding options 166,667 42,857 ---------- ---------- 10,711,799 10,590,989 ========== ========== Net income (loss) per share: Basic $ 0.01 0.00 ========== ========== Diluted $ 0.01 0.00 ========== ==========