Dale S. Rosenthal, has served on the Board of Directors of Washington Gas since October 2014. Ms. Rosenthal retired at the end of 2017 as the Division President of Clark Financial Services Group, where she set strategy for Clarks entry into the alternative energy space, leveraging Clark Constructions core turnkey construction competence into alternative energy development, finance and management. She was Clarks Chief Financial Officer for eight years, leading all the financial functions of Clark, a multi-billion dollar company. She served on the Greater Washington Board of Trade and is a Trustee of Cornell University.

She has a Juris Doctor and Masters of Business Administration from Harvard University and a Bachelor of Arts in Economics from Cornell University. She resides in Washington, DC.