Sigal Mandelker is General Partner at Ribbit Capital. She joined Ribbit Capital as a General Partner in April 2020. Ribbit is a Silicon Valley based investment firm focused on financial services and technology. Prior to Ribbit, she served as Under Secretary of Treasury for Terrorism and Financial Intelligence. As Under Secretary, Sigal supervised four main components of Treasury (OFAC, FinCEN, the Office of Intelligence and Analysis, and the Office of Terrorist Financing and Financial Crimes). Before serving as Under Secretary of Treasury, Sigal was a partner at Proskauer in New York. Sigal also previously served in a number of senior positions in the U.S. government, including as Deputy Assistant Attorney General in the Criminal Division of the Justice Department, an AUSA in the the Southern District of New York, Counselor to Secretary of Homeland Security Michael Chertoff, Counsel to the Deputy Attorney General, and as a law clerk to both US Supreme Court Justice Clarence Thomas and Judge Edith Jones of the Court of Appeals for the Fifth Circuit. Sigal is also an Advisor to Chainalysis, serves on the advisory group to the Digital Dollar Project, and is Member of the US Holocaust Memorial Council.