Prior to joining the foundation in 2002, she was a partner and member of the executive committee of Preston Gates & Ellis (now known as K&L Gates), where her practice focused on corporate securities law and private equity investments.

Collingsworth has extensive nonprofit governance experience including serving as co-chair of the board of Women’s World Banking, board chair of Social Venture Partners, and board chair of the French American School of Puget Sound, of which she was also a founder. She serves on the board of directors of Premera Blue Cross and Banner Corporation.

She earned a Master of Laws (LL.M.) in international business legal studies from the University of Exeter, England. Additionally, she earned her juris doctor from the University of Nebraska School of Law, and a bachelor’s degree in English from Andrews University.

Tabacco Mar is a frequent commentator on gender justice issues, appearing on television programs including All In with Chris Hayes, Politics Nation with Al Sharpton, and PBS’s Firing Line with Margaret Hoover, and has authored opinion pieces for the New York Times, Washington Post, and other outlets.

She has been recognized on The Root 100 annual list of the most influential African Americans ages 25 to 45 and as one of the Best LGBT Lawyers Under 40 by the National LGBT Bar Association.

Prior to joining the ACLU, Tabacco Mar served as assistant counsel at the NAACP Legal Defense & Educational Fund, an associate at Cravath, Swaine & Moore LLP, and as a judicial law clerk to Judge Julia Smith Gibbons of the U.S. Court of Appeals for the Sixth Circuit and to Judge Victor Marrero of the U.S. District Court for the Southern District of New York. She graduated from New York University School of Law and Harvard College.