After the Comptroller's Office, he spent 10 years at Citigroup, where he held a variety of legal and regulatory positions, including General Counsel of its Global Equities Group.

In 1994, Mr. Neiman joined TD Waterhouse., a bank holding company and global online financial services firm, as Executive Vice President and General Counsel.

On November 14, 2008 Neiman was appointed by United States House of Representatives Speaker Nancy Pelosi to serve on the five-member Congressional Oversight Panel created to oversee the implementation of the Emergency Economic Stabilization Act of 2008.

[6][7][8] Neiman stepped down from the New York State Banking Department in 2011 to serve as the vice chairman of the financial services regulatory practice at PricewaterhouseCoopers.

[10] Neiman is on the Board of Directors and a Vice President of the Henry Street Settlement, one of New York’s oldest social services organizations and provider of shelters for the homeless.