As of 4 May2011, the company held about 79.8 million common shares outstanding and previously completed its previous $300m share repurchase authorization as of the end of March 2011.

The company can repurchase shares for cash any time in open market transactions or in privately-negotiated transactions in accordance with applicable federal securities laws.

The time and the amount will be decided by the company based on its evaluation of market conditions, share price and other factors.

The entire programme will be funded under Airgas’ existing credit facility, has no pre-established closing date, and may be suspended or discontinued at any time.