Complex sentence: In 2011-12, the firm's financial difficulties and indebtedness became public, and have occurred at the same time as significant numbers of partners departed, and an investigation by the New York District Attorney into alleged false statements by firm chairman Stephen Davis.
Split into simpler sentences: In 2011-12, the firm's financial difficulties and indebtedness became public. In the same period, many partners departed, and an investigation by the New York District Attorney into alleged false statements by firm chairman Stephen Davis.