X0202 4 2004-06-14 0000804212 AIRGAS INC ARG 0001237785 MOLININI MICHAEL C/O AIRGAS, INC. 259 N. RADNOR-CHESTER RD, STE. 100 RADNOR PA 19087 0 1 0 0 Senior VP - Hardgoods Common Stock 2004-06-14 4 M 0 5000 17.38 A 8331 D Common Stock 2004-06-14 4 M 0 4000 15.63 A 12331 D Common Stock 2004-06-14 4 M 0 2500 15.25 A 14831 D Common Stock 2004-06-14 4 M 0 6000 15.94 A 20831 D Common Stock 2004-06-14 4 M 0 6000 5.50 A 26831 D Common Stock 2004-06-14 4 M 0 20000 8.99 A 46831 D Common Stock 2004-06-14 4 S 0 9700 22.40 D 37131 D Common Stock 2004-06-14 4 S 0 300 22.75 D 36831 D Common Stock 2004-06-14 4 S 0 1500 22.63 D 35331 D Common Stock 2004-06-14 4 S 0 500 22.65 D 34831 D Common Stock 2004-06-14 4 S 0 300 22.73 D 34531 D Common Stock 2004-06-14 4 S 0 9700 22.47 D 24831 D Common Stock 2004-06-14 4 S 0 10000 22.57 D 14831 D Common Stock 2004-06-14 4 S 0 9500 22.48 D 5331 D Common Stock 2004-06-14 4 S 0 2000 22.60 D 3331 D Common Stock 2004-06-14 4 S 0 1800 22.75 D 1531 D Stock Option (right to buy) 17.38 2004-06-14 4 M 0 5000 D 2007-04-01 Common Stock 5000 0 D Stock Option (right to buy) 15.63 2004-06-14 4 M 0 4000 D 2007-05-14 Common Stock 4000 0 D Stock Option (right to buy) 15.25 2004-06-14 4 M 0 2500 D 2008-04-27 Common Stock 2500 0 D Stock Option (right to buy) 15.94 2004-06-14 4 M 0 6000 D 2008-05-14 Common Stock 6000 0 D Stock Option (right to buy) 5.50 2004-06-14 4 M 0 6000 D 2010-05-16 Common Stock 6000 0 D Stock Option (right to buy) 8.99 2004-06-14 4 M 0 20000 D 2011-05-08 Common Stock 20000 7500 D Includes 3,331 shares of Airgas, Inc. common stock acquired pursuant to Airgas, Inc.'s Employee Stock Purchase Plan ("ESPP") as of 6/10/2004, the date of the latest available statement of the reporting person's ESPP holdings. Since 12/09/2003, the date of the statement relied upon for the amount reported on the reporting person's 12/08/2003 Form 4, a total of 817 ESPP shares have been acquired in transactions exempt from Section 16(b). The reporting person is disposing of 1,800 ESPP shares pursuant to this transaction and, as a result, has 1,531 ESPP shares remaining. These options are currently exercisable. These options are exercisable in 25% annual increments on each of 5/8/2002, 5/8/2003, 5/8/2004 and 5/8/2005. Not applicable. Dean A. Bertolino, Attorney-in-Fact for Michael L. Molinini 2004-06-15