UPDATE 1-Marathon backs CEO amid calls for his ouster <!-- no image --> <div>Marathon Petroleum Corp said on Friday the company's board supports Gary Heminger as the chief executive officer after a report that two shareholders were calling for his ouster.<div class="feedflare"> <a href="http://feeds.reuters.com/~ff/reuters/UKBankingFinancial?a=wgZaJubfebE:gucpXWu9Wdc:yIl2AUoC8zA"><img src="http://feeds.feedburner.com/~ff/reuters/UKBankingFinancial?d=yIl2AUoC8zA" border="0"></a> <a href="http://feeds.reuters.com/~ff/reuters/UKBankingFinancial?a=wgZaJubfebE:gucpXWu9Wdc:V_sGLiPBpWU"><img src="http://feeds.feedburner.com/~ff/reuters/UKBankingFinancial?i=wgZaJubfebE:gucpXWu9Wdc:V_sGLiPBpWU" border="0"></a> <a href="http://feeds.reuters.com/~ff/reuters/UKBankingFinancial?a=wgZaJubfebE:gucpXWu9Wdc:F7zBnMyn0Lo"><img src="http://feeds.feedburner.com/~ff/reuters/UKBankingFinancial?i=wgZaJubfebE:gucpXWu9Wdc:F7zBnMyn0Lo" border="0"></a> </div><img src="http://feeds.feedburner.com/~r/reuters/UKBankingFinancial/~4/wgZaJubfebE" height="1" width="1" alt=""></div> Posted by Reuters