X0202 4 2007-09-18 0000804212 AIRGAS INC ARG 0001237774 BERTOLINO DEAN A C/O AIRGAS, INC. 259 N. RADNOR-CHESTER RD, STE. 100 RADNOR PA 19087 0 1 0 0 VP, Gen. Counsel & Secretary Common Stock 2007-09-18 4 M 0 10000 15.09 A 14398 D Common Stock 2007-09-18 4 S 0 10000 47.50 D 4398 D Common Stock 2007-09-18 4 M 0 11200 16.52 A 15598 D Common Stock 2007-09-18 4 S 0 11200 47.50 D 4398 D Common Stock 2007-09-18 4 M 0 10300 19.22 A 14698 D Common Stock 2007-09-18 4 S 0 10300 48.00 D 4398 D Common Stock 2007-09-18 4 M 0 7500 21.15 A 11898 D Common Stock 2007-09-18 4 S 0 7500 48.00 D 4398 D Common Stock 2007-09-18 4 M 0 4750 24.09 A 9148 D Common Stock 2007-09-18 4 S 0 4750 48.00 D 4398 D Common Stock 2007-09-18 4 M 0 2500 36.17 A 6898 D Common Stock 2007-09-18 4 S 0 2500 48.00 D 4398 D Common Stock 637 I By 401(k) plan. Stock Option (Right to Buy) 15.09 2007-09-18 4 M 0 10000 A 2011-12-10 Common Stock 10000 0 D Stock Option (Right to Buy) 16.52 2007-09-18 4 M 0 11200 A 2012-05-06 Common Stock 11200 0 D Stock Option (Right to Buy) 19.22 2007-09-18 4 M 0 10300 A 2013-05-12 Common Stock 10300 0 D Stock Option (Right to Buy) 21.15 2007-09-18 4 M 0 7500 A 2014-05-25 Common Stock 7500 2500 D Stock Option (Right to Buy 24.09 2007-09-18 4 M 0 4750 A 2015-05-24 Common Stock 4750 4750 D Stock Option (Right to Buy) 36.17 2007-09-18 4 M 0 2500 A 2014-05-23 Common Stock 2500 7500 D Includes 4,398 shares of Airgas, Inc. common stock acquired pursuant to Airgas Inc.'s Employee Stock Purchase Plan ("ESPP") as of 09/18/2007, the date of the latest available statement of the reporting person's ESPP holdings. The information presented is as of 09/18/2007, the date of the latest available statement of the reporting person's holdings of Airgas, Inc. common stock in his 401(k) plan. These options became exercisable in 25% equal increments on each of 12/10/2002, 12/10/2003, 12/10/2004 and 12/10/2005. Not applicable. These options became exercisable in 25% equal increments on each of 5/6/2003, 5/6/2004, 5/6/2005 and 5/6/2006. These options became exercisable in 25% equal increments on each of 5/12/2004, 5/12/2005, 5/12/2006 and 5/12/2007. These options became or will become exercisable in 25% equal increments on each of 5/25/2005, 5/25/2006, 5/25/2007 and 5/25/2008. These options became or will become exercisable in 25% equal increments on each of 5/24/2006, 5/24/2007, 5/24/2008 and 5/24/2009. These options became or will become exercisable in 25% equal increments on each of 5/23/2007, 5/23/2008, 5/23/2009 and 5/23/2010. Dean A. Bertolino 2007-09-20