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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
60849	Lufkin Industries Inc	LUFK	General Industrial Machinery & Equipment (3560)	750404410

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1185404	F John Glick	P. O. Box 849 Lufkin TX 75902	President & Ceo	Yes	Yes	No	No

Reported Non-Derivative Transactions

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership
Common Stock	Acquisiton	2010-05-12	8,000	$55.39	16,800	No	4	M	Direct
Common Stock	Disposition	2010-05-12	2,000	$81.00	14,800	No	4	S	Direct
Common Stock	Disposition	2010-05-12	500	$81.05	14,300	No	4	S	Direct
Common Stock	Disposition	2010-05-12	500	$81.07	13,800	No	4	S	Direct
Common Stock	Disposition	2010-05-12	1,000	$81.15	12,800	No	4	S	Direct
Common Stock	Disposition	2010-05-12	100	$81.28	12,700	No	4	S	Direct
Common Stock	Disposition	2010-05-12	200	$81.29	12,500	No	4	S	Direct
Common Stock	Disposition	2010-05-12	1,279	$81.30	11,221	No	4	S	Direct
Common Stock	Disposition	2010-05-12	921	$81.31	10,300	No	4	S	Direct
Common Stock	Disposition	2010-05-12	100	$81.31	10,200	No	4	S	Direct
Common Stock	Disposition	2010-05-12	1,000	$81.33	9,200	No	4	S	Direct
Common Stock	Disposition	2010-05-12	400	$81.34	8,800	No	4	S	Direct
Common Stock	Acquisiton	2010-05-12	8,000	$36.12	16,800	No	4	M	Direct
Common Stock	Disposition	2010-05-12	100	$81.33	16,700	No	4	S	Direct
Common Stock	Disposition	2010-05-12	2,500	$81.35	14,200	No	4	S	Direct
Common Stock	Disposition	2010-05-12	1,000	$81.36	13,200	No	4	S	Direct
Common Stock	Disposition	2010-05-12	1,000	$81.39	12,200	No	4	S	Direct
Common Stock	Disposition	2010-05-12	1,000	$81.42	11,200	No	4	S	Direct
Common Stock	Disposition	2010-05-12	1,000	$81.45	10,200	No	4	S	Direct
Common Stock	Disposition	2010-05-12	1,000	$81.48	9,200	No	4	S	Direct
Common Stock	Disposition	2010-05-12	400	$81.51	8,800	No	4	S	Direct

Equity Swap Involved	Form Type	Code	Nature of Ownership
No	4	M	Direct
No	4	S	Direct
No	4	S	Direct
No	4	S	Direct
No	4	S	Direct
No	4	S	Direct
No	4	S	Direct
No	4	S	Direct
No	4	S	Direct
No	4	S	Direct
No	4	S	Direct
No	4	S	Direct
No	4	M	Direct
No	4	S	Direct
No	4	S	Direct
No	4	S	Direct
No	4	S	Direct
No	4	S	Direct
No	4	S	Direct
No	4	S	Direct
No	4	S	Direct

Reported Derivative Transactions

Sec. Name	Sec. Type	Acquisiton - Disposition	Date	Amount	Price	Amount - 2	Price - 2
Common Stock	Option to Purchase Common Stock	Disposition	2010-05-12	8,000	$55.39	8,000	$55.39
Common Stock	Option to Purchase Common Stock	Disposition	2010-05-12	8,000	$36.12	8,000	$36.12

Remaning Holdings	Exercise Date	Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
107,625	2009-02-12	2018-02-12	No	4	M	Direct
100	2010-02-10	2019-02-10	No	4	M	Direct