Robbins & Myers and National Oilwell Varco Announce Merger Agreement at $60.00 per Share in Cash

Robbins & Myers, Inc.

and National Oilwell Varco, Inc.

have entered into an agreement under which National Oilwell Varco will acquire Robbins & Myers in an all cash transaction that values Robbins & Myers at approximately $2.5 billion. Under the agreement, Robbins & Myers' shareholders will receive $60.00 per share in cash in return for each of the approximately 42.4 million shares outstanding ("the Transaction"). The Boards of Directors of National Oilwell Varco and Robbins & Myers have unanimously approved the transaction, which is subject to customary closing conditions, including the approval of two-thirds of Robbins & Myers shareholders. Closing would be expected to occur in the fourth quarter of calendar 2012. Robbins & Myers' largest shareholder, M.H.M. & Co., Ltd, which owns approximately 10% of the outstanding common shares of Robbins & Myers ("Common Stock") has agreed to vote its Common Stock in favor of the Transaction in accordance with the terms of a support agreement entered into in respect of the Transaction. The support agreement will terminate in the event the merger agreement is terminated in accordance with recommendation of the Board of Robbins & Myers.