(Reuters) - Fund manager T. Rowe Price backed three activist-slate candidates in the contest for board of directors seats at oil giant Exxon Mobil Corp, a spokesman said on Friday. T. Rowe Price voted in favor of hedge fund Engine No. 1 nominees Gregory Goff, Kaisa Hietala and Alexander Karsner, the spokesman said. Both Goff and Hietala have won board seats at Exxon, and Karsner remains in the running for a seat as vote counting continues at Exxon after Wednesday’s shareholder meeting. Reporting by Jennifer Hiller Our Standards: The Thomson Reuters Trust Principles.