UPDATE 2-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 chief executive officer after two of the top 10 shareholders called for his ouster.<div class="feedflare"> <a href="http://feeds.reuters.com/~ff/reuters/UKBankingFinancial?a=Hx2G6PjtDs4:BUP4TbPZZdM: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=Hx2G6PjtDs4:BUP4TbPZZdM:V_sGLiPBpWU"><img src="http://feeds.feedburner.com/~ff/reuters/UKBankingFinancial?i=Hx2G6PjtDs4:BUP4TbPZZdM:V_sGLiPBpWU" border="0"></a> <a href="http://feeds.reuters.com/~ff/reuters/UKBankingFinancial?a=Hx2G6PjtDs4:BUP4TbPZZdM:F7zBnMyn0Lo"><img src="http://feeds.feedburner.com/~ff/reuters/UKBankingFinancial?i=Hx2G6PjtDs4:BUP4TbPZZdM:F7zBnMyn0Lo" border="0"></a> </div><img src="http://feeds.feedburner.com/~r/reuters/UKBankingFinancial/~4/Hx2G6PjtDs4" height="1" width="1" alt=""></div> Posted by Reuters