EXHIBIT 11 WILLBROS GROUP, INC. COMPUTATION OF INCOME PER COMMON AND COMMON EQUIVALENT SHARE (In thousands, except share and per share amounts) (Unaudited) Three Months Ended March 31, ------------------ 1997 1996 ------- ------- [S] [C] [C] PRIMARY Net income $ 2,454 $ 2,044 Preferred dividends - (724) --------- --------- Net income applicable to common shares $ 2,454 $ 1,320 ========= ========= Weighted average number of common and common equivalent shares outstanding 14,385,980 13,747,000 Adjustment to reflect common shares issued during the twelve months prior to May 31, 1996, as outstanding for all periods presented using the "treasury stock" method - 409,062 --------- -------- Weighted average number of common and common equivalent shares outstanding 14,385,980 14,156,062 ========== ========== Income per common and common equivalent share: Net income $ .17 $ .14 ========= ========= Net income applicable to common shares $ .17 $ .09 ========= ========= There is no significant difference between primary and fully diluted income per share.