X0303 4 2011-02-14 0 0000060849 LUFKIN INDUSTRIES INC LUFK 0001421541 CREWS MARK E 601 SOUTH RAGUET LUFKIN TX 75904 0 1 0 0 Vice President Common Stock 2011-02-14 4 M 0 7500 27.87 A 7500 D Common Stock 2011-02-14 4 S 0 7500 74.00 D 0 D Common Stock 2011-02-14 4 M 0 5000 27.635 A 5000 D Common Stock 2011-02-14 4 S 0 2250 74.00 D 2750 D Common Stock 2011-02-14 4 S 0 1000 74.31 D 1750 D Common Stock 2011-02-14 4 S 0 750 74.32 D 1000 D Common Stock 2011-02-14 4 S 0 47 75.05 D 953 D Common Stock 2011-02-14 4 S 0 300 75.08 D 653 D Common Stock 2011-02-14 4 S 0 350 75.11 D 303 D Common Stock 2011-02-14 4 S 0 286 75.13 D 17 D Common Stock 2011-02-14 4 S 0 17 75.14 D 0 D Common Stock 2011-02-14 4 M 0 7000 28.915 A 7000 D Common Stock 2011-02-14 4 S 0 3297 75.14 D 3703 D Common Stock 2011-02-14 4 S 0 1500 75.15 D 2203 D Common Stock 2011-02-14 4 S 0 400 75.1575 D 1803 D Common Stock 2011-02-14 4 S 0 300 75.16 D 1503 D Common Stock 2011-02-14 4 S 0 100 75.18 D 1403 D Common Stock 2011-02-14 4 S 0 200 75.19 D 1203 D Common Stock 2011-02-14 4 S 0 200 75.195 D 1003 D Common Stock 2011-02-14 4 S 0 1003 75.21 D 0 D Option to Purchase Common Stock 27.87 2011-02-14 4 M 0 7500 27.87 D 2009-01-21 2018-01-20 Common Stock 7500 80500 D Option to Purchase Common Stock 27.635 2011-02-14 4 M 0 5000 27.635 D 2009-11-04 2018-11-03 Common Stock 5000 75500 D Option to Purchase Common Stock 28.915 2011-02-14 4 M 0 7000 28.915 D 2010-11-03 2019-11-02 Common Stock 7000 68500 D Adjusted for 2 for 1 stock split effective, June 1, 2010. Mark E. Crews 2011-02-15