JMP Securities analyst Jason Butler said that Intrexon (XON) management confirmed in conversations with him yesterday after the markets closed that Dominion (D) allowed its option with Intrexon Energy Partners for isobutanol production facilities in North America to expire without opting in. While "somewhat disappointing," Butler said he remains confident that Intrexon and the IEP joint venture, which was formed with undisclosed investors that do not include Dominion, are making progress and Dominion's decision should not impact IEP's ability to continue advancing its efforts toward commercial production. He reiterates an Outperform rating and $42 price target on Intrexon shares.