About William

Managing Partner of the firm, Bill Roark is a trusted litigator and nationally recognized leader in cannabis law. He guides municipalities, corporations, and entrepreneurs through complex environmental and administrative law matters while shaping PA’s evolving medical marijuana landscape. His thought leadership has earned recognition from Best Lawyers in America®, Law360, The Legal Intelligencer, and Super Lawyers.

Specialties

CANNABIS LAW

ENVIRONMENTAL LAW

LITIGATION

PERSONAL INJURY

MEDICAL MALPRACTICE

Admin Contact

Terry A. Penna TPenna@HRMML.com

William G. Roark is the Managing Partner of Hamburg, Rubin, Mullin, Maxwell & Lupin and a member of the firm’s Litigation Department. Bill focuses his practice on environmental litigation and guiding municipal and corporate clients through complex administrative law matters, including cases involving the Federal Clean Water Act, Pennsylvania’s Clean Streams Law, the Hazardous Sites Cleanup Act, and Act 47 receiverships. 

A recognized leader in cannabis law, Bill chairs the firm’s Medical Marijuana Practice. Since the passage of Pennsylvania’s Medical Marijuana Act, he has represented individuals and businesses entering the industry, advising on licensing, regulatory compliance, and business operations. Because of his early and ongoing role in shaping this developing area of law, Bill is frequently invited to present at educational programs for lawyers and industry professionals. He teaches “Cannabis Law and Regulation” as an adjunct professor at Villanova University Charles Widger School of Law, as well as courses and lectures at Temple University Beasley School of Law and the University of the Sciences. He also previously served as Co-Chair of the Pennsylvania Bar Association’s Medical Marijuana and Hemp Law Committee. 

Bill is also deeply involved in the legal community. He is a past editor of the Montgomery County Law Reporter, past chair of the Montgomery Bar Association’s Environmental Law Committee, and a contributing editor to the Montgomery County Civil Practice Manual. Currently, he serves as President of Legal Aid of Southeastern Pennsylvania. 

His leadership and achievements have earned him recognition locally and nationally. Bill has been included in Best Lawyers in America® for Cannabis Law (2023–2024) and was named a “Cannabis Industry Power Player” by Metro News. He was selected as a national “Rising Star” for Cannabis Law by Law360 (2020) and received the Pennsylvania Bar Association’s Special Achievement Award for his work establishing the PBA’s Medical Marijuana & Hemp Law Committee. In addition, he has been named to the Pennsylvania Super Lawyers list for Administrative Law (2024), following more than a decade of recognition on its “Rising Stars” list. The Legal Intelligencer also honored him as one of its “Lawyers on the Fast Track” (2018). 

Bill graduated cum laude from Bucknell University with a degree in Economics (2003) and earned his J.D. with honors from Villanova University Charles Widger School of Law (2006), where he served on the Moot Court Board Executive Committee. Before beginning his legal career, Bill worked at Environmental Equipment Inc., helping usher in the “green age” by selling and installing solar pool heating systems.