(XOM) - Get Exxon Mobil Corporation Report

said Vice Chairman Lucio A. Noto plans to retire, effective immediately.

Noto served as chairman and chief executive of Mobil, before the company merged with Exxon to create the current corporation. A representative of the oil and gas producer said the position wouldn't be filled.

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Last week, the company, which is based in Irving, Texas, reported

fourth-quarter income that beat Wall Street's estimates by 15 cents.

Shares of ExxonMobil gained $2.17, or 2.7%, to close

New York Stock Exchange

trading at $84.15.