EXHIBIT 11 3D SYSTEMS CORPORATION COMPUTATION OF PER SHARE EARNINGS PRIMARY AND FULLY DILUTED COMPUTATION Three Month Periods Ended Nine Month Periods Ended -------------------------------------- -------------------------------------- September 29, 1995 September 27, 1996 September 29, 1995 September 27, 1996 ------------------ ------------------ ------------------ ------------------ PRIMARY EARNINGS PER SHARE Net income $ 4,865,705 $ 1,015,404 $ 7,607,233 $ 2,937,715 ------------------ ------------------ ------------------ ------------------ ------------------ ------------------ ------------------ ------------------ Applicable common and common stock equivalent shares: Weighted average number of shares of common stock outstanding during the period 11,245,945 11,336,475 9,896,816 11,313,810 Incremental number of shares outstanding during the period resulting from the assumed exercises of stock options and warrants 482,995 360,303 454,367 448,932 ------------------ ------------------ ------------------ ------------------ Weighted average number of shares of common stock and common stock equivalents during the period 11,728,940 11,696,778 10,351,183 11,762,742 ------------------ ------------------ ------------------ ------------------ ------------------ ------------------ ------------------ ------------------ Primary earning per share $ .41 $ .09 $ .73 $ .25 ------------------ ------------------ ------------------ ------------------ ------------------ ------------------ ------------------ ------------------ FULLY DILUTED EARNINGS PER SHARE Net income $ 4,865,705 $ 1,015,404 $ 7,607,233 $ 2,937,715 ------------------ ------------------ ------------------ ------------------ ------------------ ------------------ ------------------ ------------------ Applicable common and common stock equivalent shares: Weighted average number of shares of common stock outstanding during the period 11,245,945 11,336,475 9,896,816 11,313,810 Incremental number of shares outstanding during the period resulting from the assumed exercises of stock options and warrants 483,010 360,303 472,279 449,541 ------------------ ------------------ ------------------ ------------------ Weighted average number of shares of common stock and common stock equivalents outstanding during the period 11,728,955 11,696,778 10,369,095 11,763,351 ------------------ ------------------ ------------------ ------------------ ------------------ ------------------ ------------------ ------------------ Fully diluted earnings per share $ .41 $ .09 $ .73 $ .25 ------------------ ------------------ ------------------ ------------------ ------------------ ------------------ ------------------ ------------------