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Filing Details

Accession Number:: 0001140361-10-032067
Form Type:: 4
Zero Holdings:: No
Publication Time:: 2010-08-06 13:00:00
Reporting Period:: 2010-08-03

Filing Date:: 2010-08-06
Accepted Time:: 2010-08-06 16:16:42
SEC Url:: Form 4 Filing

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
1185412	G Paul Perez	P.o. Box 849 Lufkin TX 75902	Vp/Gen. Counsel/Secretary	No	Yes	No	No

Reported Non-Derivative Transactions

Show Other Fields >>

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership
Common Stock	Acquisiton	2010-08-03	6,900	$9.25	14,900	No	4	M	Direct
Common Stock	Disposition	2010-08-03	6,900	$43.00	8,000	No	4	S	Direct
Common Stock	Acquisiton	2010-08-03	7,500	$23.35	15,500	No	4	M	Direct
Common Stock	Disposition	2010-08-03	7,500	$43.00	8,000	No	4	S	Direct
Common Stock	Acquisiton	2010-08-03	430	$30.17	8,430	No	4	M	Direct
Common Stock	Disposition	2010-08-03	430	$43.00	8,000	No	4	S	Direct
Common Stock	Acquisiton	2010-08-04	7,070	$30.17	15,070	No	4	M	Direct
Common Stock	Disposition	2010-08-04	3,230	$43.00	11,840	No	4	S	Direct
Common Stock	Disposition	2010-08-04	340	$43.02	11,500	No	4	S	Direct
Common Stock	Disposition	2010-08-04	400	$43.03	11,100	No	4	S	Direct
Common Stock	Disposition	2010-08-04	1,000	$43.04	10,100	No	4	S	Direct
Common Stock	Disposition	2010-08-04	100	$43.06	10,000	No	4	S	Direct
Common Stock	Disposition	2010-08-04	2,000	$43.10	8,000	No	4	S	Direct
Common Stock	Acquisiton	2010-08-04	8,750	$29.22	16,750	No	4	M	Direct
Common Stock	Disposition	2010-08-04	5,479	$43.00	11,271	No	4	S	Direct
Common Stock	Disposition	2010-08-04	660	$43.02	10,611	No	4	S	Direct
Common Stock	Disposition	2010-08-04	100	$43.03	10,511	No	4	S	Direct
Common Stock	Disposition	2010-08-04	900	$43.06	9,611	No	4	S	Direct
Common Stock	Disposition	2010-08-04	511	$43.10	9,100	No	4	S	Direct
Common Stock	Disposition	2010-08-04	100	$43.11	9,000	No	4	S	Direct
Common Stock	Disposition	2010-08-04	500	$43.18	8,500	No	4	S	Direct
Common Stock	Disposition	2010-08-04	500	$43.27	8,000	No	4	S	Direct
Common Stock	Acquisiton	2010-08-04	4,000	$27.64	12,000	No	4	M	Direct
Common Stock	Disposition	2010-08-04	1,791	$43.00	10,209	No	4	S	Direct
Common Stock	Disposition	2010-08-04	1,709	$43.02	8,500	No	4	S	Direct
Common Stock	Disposition	2010-08-04	300	$43.03	8,200	No	4	S	Direct
Common Stock	Disposition	2010-08-04	100	$43.06	8,100	No	4	S	Direct
Common Stock	Disposition	2010-08-04	100	$43.10	8,000	No	4	S	Direct

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

Reported Derivative Transactions

Show Other Fields >>

Sec. Name	Sec. Type	Acquisiton - Disposition	Date	Amount	Price	Amount - 2	Price - 2
Common Stock	OPTION TO PURCHASE COMMON STOCK	Disposition	2010-08-03	6,900	$9.25	6,900	$9.25
Common Stock	OPTION TO PURCHASE COMMON STOCK	Disposition	2010-08-03	7,500	$23.35	7,500	$23.35
Common Stock	OPTION TO PURCHASE COMMON STOCK	Disposition	2010-08-03	430	$30.17	430	$30.17
Common Stock	OPTION TO PURCHASE COMMON STOCK	Disposition	2010-08-04	7,070	$30.17	7,070	$30.17
Common Stock	OPTION TO PURCHASE COMMON STOCK	Disposition	2010-08-04	8,750	$29.22	8,750	$29.22
Common Stock	OPTION TO PURCHASE COMMON STOCK	Disposition	2010-08-04	4,000	$27.64	4,000	$27.64

Remaning Holdings	Exercise Date	Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
74,250	2005-11-09	2014-11-09	No	4	M	Direct
66,750	2006-11-01	2015-11-01	No	4	M	Direct
66,320	2007-10-31	2016-10-31	No	4	M	Direct
59,250	2007-10-31	2016-10-31	No	4	M	Direct
50,500	2008-11-06	2017-11-06	No	4	M	Direct
46,500	2009-11-03	2018-11-03	No	4	M	Direct

Footnotes

On June 2, 2010, the common stock of Lufkin Industries, Inc split 2-for-1, resulting in the reporting person's acquisition of 4,000 additional shares of common stock.
The option was previously reported as covering 3,450 shares at an exercise price of $18.50 per share, but was adjusted to reflect a stock split that occurred on June 2, 2010.
The option was previously reported as covering 3,750 shares at an exercise price of $46.70 per share, but was adjusted to reflect a stock split that occurred on June 2, 2010.
The option was previously reported as covering 5,625 shares at an exercise price of $60.34 per share, but was adjusted to reflect a stock split that occurred on June 2, 2010.
The option was previously reported as covering 8,750 shares at an exercise price of $58.44 per share, but was adjusted to reflect a stock split that occurred on June 2, 2010.
The option was previously reported as covering 8,000 shares at an exercise price of $55.27 per share, but was adjusted to reflect a stock split that occurred on June 2, 2010.