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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
1373454	J Leslie Graff	C/O Airgas, Inc. 259 N. Radnor-Chester Road, Suite 100 Radnor PA 19087	Sr. Vp Corporate Development	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	Explanation
Common Stock	Disposition	2011-12-20	3,000	$78.19	11,729	No	4	S	Direct

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

Reported Non-Derivative Holdings

Sec. Name	Remaning Holdings	Nature of Ownership	Explanation
Common Stock	250	Indirect	By Immediate Family
Common Stock	4,304	Indirect	By 401(k) Plan

Footnotes

This price represents the average selling price (within a range of $78.11-$78.35) of the shares of common stock of Airgas, Inc. sold by the reporting person, as provided by the reporting person's broker.
Includes 1,518 shares of Airgas, Inc. common stock acquired pursuant to Airgas, Inc.'s Employee Stock Purchase Plan ("ESPP") as of 12/20/2011, the date of the latest available statement of the reporting person's ESPP holdings. Since 8/25/2011, the date of the statement relied upon for the amount reported on the reporting person's 8/26/2011 Form 4, a total of 15 ESPP shares have been acquired in transactions exempt from Section 16(b).
The information presented is as of 12/20/2011, the date of the latest available statement of the reporting person's holdings of Airgas, Inc. common stock in his 401(k) plan. Since 8/25/2011, the date of the statement relied upon for the amount reported on the reporting person's 8/26/2011 Form 4, a total of 31 shares have been acquired in transactions exempt from Section 16(b).