X0306 4 2014-08-06 0000804212 AIRGAS INC ARG 0001237784 MCLAUGHLIN ROBERT M C/O AIRGAS, INC. 259 N. RADNOR-CHESTER ROAD, SUITE 100 RADNOR PA 19087 0 1 0 0 Senior VP and CFO Common Stock 2014-08-06 4 M 0 25000 60.84 A 48636 D Common Stock 2014-08-06 4 S 0 24000 108.67 D 24636 D Common Stock 634 I By 401(k) Plan Stock Option (Right to Buy) 60.84 2014-08-06 4 M 0 25000 D 2016-05-20 Common Stock 25000 0 D Includes 2,026 shares of Airgas, Inc. common stock acquired by the reporting person pursuant to Airgas, Inc.'s Employee Stock Purchase Plan ("ESPP") and held in his ESPP account as of 8/6/2014, the date of the latest available statement of the reporting person's ESPP holdings. Since 9/19/2013, the date of the statement relied upon for the amount reported on the reporting person's 9/23/2013 Form 4, a total of 286 ESPP shares have been acquired in transactions exempt from Section 16(b). This price represents the average selling price (within a range of $108.52-$108.80) of the shares of common stock of Airgas, Inc. sold by the reporting person, as provided by the reporting person's broker. The information presented is as of 8/6/2014, the date of the latest available statement of the reporting person's holdings of Airgas, Inc. common stock in his 401(k) plan. Since 9/19/2013, the date of the statement relied upon for the amount reported on the reporting person's 9/23/2013 Form 4, a total of 73 shares have been acquired in transactions exempt from Section 16(b). These options became exercisable in 25% equal increments on each of 5/20/2009, 5/20/2010, 5/20/2011 and 5/20/2012. Not applicable. Robert H. Young, Jr., Attorney-In-Fact for Robert M. McLaughlin 2014-08-08