Believes it is Critical to Add Directors with an Investor Mindset, and Capital Allocation and Financial Markets Experience Underscores Engine's Repeated Attempts to Avoid an Election Contest, Including by its Willingness to Settle for Reduced Board Representation Engine Capital, L.P. (together with its affiliates, "Engine"), a significant shareholder of MRC Global Inc. (NYSE:MRC) ("MRC" or the "Company") and the owner of nearly 4.3% of the Company's outstanding common stock, today announced it has filed a preliminary proxy statement with the U.S. Securities and Exchange Commission in connection with its nomination of two highly qualified candidates for election to the Company's Board of

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