A Washington-based Bingham McCutchen partner will succeed Mark Cahn as the Securities and Exchange Commission’s general counsel, the agency announced on Monday.

Geoffrey Aronow, a Bingham partner since 2008 and the head of the Enforcement Division of the U.S.Commodity Futures Trading Commission from 1995 to 1999, will become the SEC’s chief legal officer later this month. Cahn left the SEC last week. The agency said in December that the former Wilmer Cutler Pickering Hale and Dorr partner would return to the private sector.