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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
804212	Airgas Inc	ARG	Wholesale-Industrial Machinery & Equipment (5084)	560732648

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1237787	Shaun B Powers	C/O Airgas, Inc. 259 N. Radnor-Chester Road, Suite 100 Radnor PA 19087	Division President - North	No	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	2012-12-17	20,800	$19.22	30,286	No	4	M	Direct
Common Stock	Acquisiton	2012-12-17	18,000	$21.15	48,286	No	4	M	Direct
Common Stock	Acquisiton	2012-12-17	16,900	$24.09	65,186	No	4	M	Direct
Common Stock	Acquisiton	2012-12-17	15,800	$36.17	80,986	No	4	M	Direct
Common Stock	Acquisiton	2012-12-17	15,800	$43.62	96,786	No	4	M	Direct
Common Stock	Disposition	2012-12-17	52,583	$89.05	44,203	No	4	S	Direct

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

Reported Derivative Transactions

Sec. Name	Sec. Type	Acquisiton - Disposition	Date	Amount	Price	Amount - 2	Price - 2
Common Stock	Stock Option (Right to Buy)	Disposition	2012-12-17	20,800	$0.00	20,800	$19.22
Common Stock	Stock Option (Right to Buy)	Disposition	2012-12-17	18,000	$0.00	18,000	$21.15
Common Stock	Stock Option (Right to Buy)	Disposition	2012-12-17	16,900	$0.00	16,900	$24.09
Common Stock	Stock Option (Right to Buy)	Disposition	2012-12-17	15,800	$0.00	15,800	$36.17
Common Stock	Stock Option (Right to Buy)	Disposition	2012-12-17	15,800	$0.00	15,800	$43.62

Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
2013-05-12	No	4	M	Direct
2014-05-25	No	4	M	Direct
2015-05-24	No	4	M	Direct
2014-05-23	No	4	M	Direct
2015-05-08	No	4	M	Direct

Footnotes

Includes 9,486 shares of Airgas, Inc. common stock acquired pursuant to Airgas, Inc.'s Employee Stock Purchase Plan ("ESPP") as of 12/17/2012, the date of the latest available statement of the reporting person's ESPP holdings. Since 2/23/2012, the date of the statement relied upon for the amount reported on the reporting person's 2/27/2012 Form 4, a total of 231 ESPP shares have been acquired in transactions exempt from Section 16(b).
This price represents the average selling price (within a range of $89.00-$89.29) of the shares of common stock of Airgas, Inc. sold by the reporting person, as provided by the reporting person's broker.
These options became exercisable in 25% equal increments on each of 5/12/2004, 5/12/2005, 5/12/2006 and 5/12/2007.
Not Applicable.
These options became exercisable in 25% equal increments on each of 5/25/2005, 5/25/2006, 5/25/2007 and 5/25/2008.
These options became exercisable in 25% equal increments on each of 5/24/2006, 5/24/2007, 5/24/2008 and 5/24/2009.
These options became exercisable in 25% equal increments on each of 5/23/2007, 5/23/2008, 5/23/2009 and 5/23/2010.
These options became exercisable in 25% equal increments on each of 5/08/2008, 5/08/2009, 5/08/2010 and 5/08/2011.