1 EXHIBIT 11 NOVAMETRIX MEDICAL SYSTEMS INC. STATEMENT RE: COMPUTATION OF PER SHARE EARNINGS QUARTER ENDED SIX MONTHS ENDED 10-27-96 10-29-95 10-27-96 10-29-95 -------- -------- -------- -------- PRIMARY EARNINGS PER SHARE: Weighted average number of shares of 6,955,902 5,877,547 6,809,614 5,864,584 Common Stock outstanding Net effect of dilutive common stock equivalents (1) 1,197,477 2,048,676 1,171,142 2,140,366 Total weighted average number of shares of Common Stock and dilutive common ---------- ---------- ---------- ---------- stock equivalents outstanding 8,153,379 7,926,223 7,980,756 8,004,736 ========== ========== ========== ========== FULLY DILUTED EARNINGS PER SHARE: Weighted average number of shares of 6,955,902 5,877,547 6,809,614 5,864,584 Common Stock outstanding Net effect of dilutive common stock equivalents (1) 1,403,505 2,048,676 1,518,532 2,140,152 Total weighted average number of shares of Common Stock and dilutive common ---------- ---------- ---------- ---------- stock equivalents outstanding 8,359,407 7,926,223 8,328,146 8,004,736 ========== ========== ========== ========== Net income $ 696,158 $ 456,964 $1,344,032 $ 845,131 PER COMMON SHARE AMOUNTS: Primary $ .09 $ .06 $ .17 $ .11 ========== ========== ========== ========== Fully Diluted $ .08 $ .06 $ .16 $ .11 ========== ========== ========== ========== (1) Common stock equivalents consist of the Company's Preferred Stock, stock options, warrants and shares subscribed under the Company's Employee Stock Purchase Plan. The computation of dilutive common stock equivalents is based on the if-converted method for the Preferred Stock and on the treasury stock method for the other common stock equivalents using the average market price for the primary earnings per share computations and the higher of average or period-end market price for the fully diluted earnings per share computations. Page 16 of 17