X0202 4 2007-07-03 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 Exec. VP and COO Common Stock 2007-07-03 4 J 0 1544 A 6430 D These shares of Airgas, Inc. common stock were acquired in a merger transaction (the "Merger"), effective on July 3, 2007 (the "Effective Date"), in which the reporting person exchanged 2,000 shares of Series B Preferred Stock of National Welders Supply Company, Inc. (formerly, a consolidated joint venture of Airgas, Inc.) for 1,544 shares of Airgas, Inc. common stock. On the Effective Date of the Merger, the closing price of Airgas Inc.'s common stock was $48.15 and each share of the Series B Preferred Stock of National Welders Supply Company was exchanged for 0.7724 shares of Airgas, Inc. common stock. Includes 4,885 shares of Airgas, Inc. common stock acquired pursuant to Airgas Inc.'s Employee Stock Purchase Plan ("ESPP") as of 10/18/2007, the date of the latest available statement of the reporting person's ESPP holdings. Todd R. Craun, Attorney-in-Fact for Michael L. Molinini 2007-10-29