X0202 4 2006-01-12 0 0000895450 WILLBROS GROUP INC WG 0001237698 ALLCORN JOHN K PLAZA 2000 BUILDING, 50TH STREET 8TH FLOOR, APARTADO 0816-01098 PANAMA R1 PANAMA 0 1 0 0 Executive Vice President Common Stock 2006-01-12 4 F 0 1224 16.71 D 87552 D Common Stock 5961 I 401(k) Plan The information is based on a plan statement dated as of January 13, 2006. Dennis G. Berryhill, Attorney-in-fact for John K. Allcorn 2006-01-17