Mary Margaret Roark represents clients in civil matters across the nation in both federal and state courts. Her practice spans a variety of subject matters including securities fraud, entertainment, intellectual property, and energy. She has substantial experience in all aspects of complex, high stakes civil litigation including managing large scale discovery projects, briefing and arguing dispositive motions, taking and defending depositions, and presenting and cross-examining witnesses in jury trials. Mary Margaret also has a robust appellate practice, where she has prepared numerous appellate briefs in both state and federal courts and has presented appellate oral arguments for a number of clients with favorable outcomes.

Before joining Baker Botts, Mary Margaret clerked for the Honorable Chief Justice Nathan L. Hecht of the Supreme Court of Texas for the 2017-2018 term.

Mary Margaret also devotes a significant amount of her time and energy to pro bono representation in the State of Texas. She serves on the Board of Directors for Volunteer Legal Services of Central Texas and is on the Leadership Council for the Andy Roddick Foundation.