our management team
Chief Executive Officer and President
william greenberg is our chief executive officer and president. mr. greenberg previously served as vice president and co-chief investment officer of two harbors since january 2020, with primary responsibility for the investment and hedging strategy of the company’s portfolio of conventional msr and securities. prior to that, he served as co-deputy chief investment officer from june 2018. mr. greenberg has over 25 years of experience managing portfolios of structured finance assets. prior to joining two harbors in 2012, mr. greenberg was a managing director at ubs ag, holding a variety of senior positions with responsibilities including managing the mortgage repurchase liability risk related to over $100 billion of rmbs and whole loans issued and/or sold by ubs. additionally, mr. greenberg was co-head of trading within the snb stabfund, including managing $40 billion of legacy rmbs, abs, and cmbs securities and loans. prior to joining ubs, mr. greenberg was a managing director at natixis na, where he co-managed portfolios of rmbs and agency mortgage servicing rights. mr. greenberg holds a b.s. in physics from the massachusetts institute of technology, and m.s. and ph.d. degrees in theoretical nuclear physics from the university of washington.