Leonard Rosen, a founding partner of Wachtell, Lipton, Rosen & Katz and a renowned bankruptcy attorney who represented the City of New York during its 1975 financial crisis and stood up for lenders in the Chrysler bailout in the early 1980s, died Wednesday at the age of 83.

Leonard Rosen

Rosen launched Wachtell Lipton in the mid 1960s with fellow New York University Law School graduates Martin Lipton, Herbert Wachtell and George Katz. He retired in 1997, but remained of counsel to the firm until his death.