X0202 4 2004-06-14 0000804212 AIRGAS INC ARG 0001237783 MILLAY ROGER F C/O AIRGAS, INC. 259 N. RADNOR-CHESTER RD., STE. 100 RADNOR PA 19087 0 1 0 0 Senior VP and CFO Common Stock 2004-06-14 4 M 0 10000 8.44 A 16222 D Common Stock 2004-06-14 4 S 0 10000 22.50 D 6222 D Common Stock 897 I By 401(k) Plan Stock Option (right to buy) 8.44 2004-06-14 4 M 0 10000 D 2009-12-23 Common Stock 10000 20000 D Includes 3,222 shares of Airgas, Inc. common stock acquired pursuant to the Airgas, Inc. 1998 Employee Stock Purchase Plan ("ESPP") as of 6/10/2004, the date of the latest available statement of the reporting person's ESPP account. Since 12/31/2001, the date relied upon for the reporting person's January 2002 Form 4, a total of 1,259 ESPP shares have been acquired in transactions exempt from Section 16(b). The information presented is as of 5/13/2004, the date of the latest available statement of the reporting person's holdings of Airgas common stock in his 401(k) Plan. Since 12/31/2001, the date relied upon for the amount reported on the reporting person's January 2002 Form 4, a total of 56 shares have been acquired in transactions exempt from Section 16(b). These options are currently exercisable. Not applicable. Dean A. Bertolino, Attorney-in-Fact for Roger F. Millay 2004-06-15