Leonard Grunstein, 61, who resigned from the bar in 2012, pleaded guilty Wednesday in Manhattan Supreme Court to third-degree perjury, a class A misdemeanor. The plea stemmed from a 2004 transaction in which Grunstein, a former Troutman Sanders partner, and his business partner and real estate investor Rubin Schron acquired the assets of a company operating nursing homes and created a new entity with the assets. In the deal, Schron supplied a $100 million loan and was granted an option to acquire a controlling interest in SV Care Holdings, the parent of the new entity.

In 2010, Schron indicated plans to exercise the option, but Grunstein and others sued, claiming Schron failed to fund the $100 million loan. Schron countered with his own suit.