About William
William Jackson took a deliberate path into law after earning a bachelor’s degree in mathematics from the College of William and Mary in 1974. He entered Villanova University School of Law and completed his J.D. in 1980. The combination of a quantitative undergraduate degree and legal training set him up for a long career in private practice that has spanned more than four decades.
He began his legal career in 1980 at Semmes, Bowen & Semmes, where he served as a partner. Those early years were spent building a practice grounded in courtroom procedure and appeals. Colleagues from that era recall a lawyer who applied methodical reasoning to case preparation and who favored careful, evidence-driven advocacy.
In 2001 Jackson left the larger firm setting to become a principal at Moore & Jackson, LLC. There he ran a smaller practice that allowed for direct client contact and management of complex litigation files. Running a boutique operation required him to handle both the substantive law and the business side of the practice. That experience broadened his day-to-day responsibilities and sharpened his approach to case strategy and client counseling.
In 2023 he joined Reger Rizzo & Darnall LLP as of counsel. The move returned him to a larger firm environment later in his career. He is admitted in Maryland and has practiced before the U.S. Court of Appeals for the Fourth Circuit. Over the years he has appeared in both trial and appellate settings and worked across a variety of civil matters. Peers describe his courtroom manner as steady and his written work as precise. His mathematical training is evident in his attention to detail and in the way he frames legal problems for judges and opposing counsel.
Jackson’s practice today combines advising on pending litigation and contributing to appellate briefing. He maintains an active presence in Maryland courts and accepts matters that proceed to the Fourth Circuit. He currently practices as of counsel at Reger Rizzo & Darnall LLP, handling matters in Maryland and before the U.S. Court of Appeals for the Fourth Circuit.
