Wortham Insurance has agreed to a buyout by Marsh, a wholly owned subsidiary of New York-based Marsh & McLennan Companies Inc., combining two insurance firms with substantial Austin presences. The deal is expected to close in the third quarter of 2018, but financial terms were not disclosed, according to a June 25 announcement. It will expand Marsh's Texas footprint and energy practice. Wortham, which was founded in 1915 in Houston by Gus Wortham and his father John L. Wortham, has more than 530...