HAMILTON, Bermuda--(BUSINESS WIRE)--Assured Guaranty Ltd. (NYSE:AGO) (together with its subsidiaries, Assured Guaranty), the leading financial guaranty insurance company, has hired Melissa Gribble to expand its reach within the Australian market. An Australian with decades of experience in global financial markets, Ms. Gribble is based in Sydney. She reports to U.K.-based Managing Director and Joint Head of Origination Suparna Dar. “We are excited that Melissa has joined Assured Guaranty to lead our init ...