X0306 4 2016-05-23 1 0000804212 AIRGAS INC ARG 0001237794 STOUT DAVID M C/O AIRGAS, INC. 259 N. RADNOR-CHESTER ROAD, STE. 100 RADNOR PA 19087 1 0 0 0 Common Stock 2016-04-22 4 G 0 1551 D 33347 D Common Stock 2016-05-23 4 D 0 33347 143.00 D 0 D Stock Option (Right to Buy) 57.49 2016-05-23 4 D 0 6500 D 2016-08-05 Common Stock 6500 0 D Stock Option (Right to Buy) 44.18 2016-05-23 4 D 0 7000 D 2017-08-18 Common Stock 7000 0 D Stock Option (Right to Buy) 67.63 2016-05-23 4 D 0 5500 D 2018-09-23 Common Stock 5500 0 D Stock Option (Right to Buy) 64.05 2016-05-23 4 D 0 5782 D 2019-08-29 Common Stock 5782 0 D Stock Option (Right to Buy) 82.74 2016-05-23 4 D 0 4600 D 2020-08-14 Common Stock 4600 0 D Stock Option (Right to Buy) 105.41 2016-05-23 4 D 0 4500 D 2021-08-06 Common Stock 4500 0 D Stock Option (Right to Buy) 107.17 2016-05-23 4 D 0 5000 D 2022-08-05 Common Stock 5000 0 D Stock Option (Right to Buy) 102.70 2016-05-23 4 D 0 6300 D 2023-08-04 Common Stock 6300 0 D Not applicable. Disposed of pursuant to an Agreement and Plan of Merger, dated as of November 17, 2015, among the Issuer, L'Air Liquide, S.A. and AL Acquisition Corporation, an indirect wholly owned subsidiary of Air Liquide ("Merger Agreement"), in exchange for the cash merger consideration of $143.00 per share of Airgas, Inc. common stock disposed of by the reporting person in connection with the merger. Pursuant to the Merger Agreement, each stock option outstanding on the effective date of the merger, whether vested or unvested, was canceled in exchange for a cash payment equal to the product of (x) the excess of the cash per share merger consideration ($143.00) over the exercise price of the stock option and (y) the number of shares of common stock subject to the option on the effective day of the merger. Robert H. Young, Jr., Attorney-in-Fact for David M. Stout 2016-05-24