Gregg I. Adelman

Bryan is a partner at the firm and has experience in counseling and representing clients on a range of environmental and energy matters. Bryan’s practice has focused on regulatory compliance and transactional matters, particularly in the areas of air and water quality, redevelopment, sustainability, permitting, energy efficiency and renewable energy development. Over the last several years, Bryan has primarily worked with complex regulated industries, notably including petroleum refinin...

Peter Amuso's legal journey was inspired by his grandfather, whose legacy deeply influenced his career choices. Pursuing higher education with an Army ROTC Scholarship, Peter graduated magna cum laude from Georgetown University in 1994. He then attended Harvard Law School, earning his degree with honors in 1997, before serving overseas as an active duty Army officer in the Judge Advocate General's Corps. During his time in the JAG Corps, Peter notably worked on a defense team that successfull...

Stephen J. Olsen is a member of Gawthrop Greenwood’s Trusts & Estates Department, practicing in the areas of Estate, Trust Administration, Estate Planning Taxation, and Business Transactions. He is also one of the few Pennsylvania attorneys in private practice with a wide breadth of experience supporting the legal needs of medical marijuana operators. Recently Stephen’s Cannabis Law practice has expanded to provide support to medical marijuana permittees in operation after Pen...

After completing his undergraduate degree at the United States Merchant Marine Academy Mr. DeGiulio obtained a U.S. Coast Guard unlimited tonnage Third Officer’s license and a First Class Pilot license for the Great Lakes and served on numerous merchant and naval vessels. He then returned to school and obtained his law degree and a master’s degree in business administration. Throughout his legal career Mr. DeGiulio has handled all types of maritime casualty and commercial disputes...

Hugh A. Donaghue, Esquire, is a Martindale-Hubbell A/V-Rated Attorney with more than 25 years of experience handling complex plaintiff-side litigation. His practice focuses on Personal Injury Litigation, Medical Malpractice Law, and Professional Malpractice Law on behalf of injured individuals and their families. His work includes matters involving automobile accidents, medical negligence, nursing home abuse, product liability, and premises liability. A lifelong resident of Pennsylvania and a...

Vanessa Albert Lowry focuses her practice on tax, public finance, and asset securitization matters, as well as investment and repurchase agreements.

John J. O'Donnell is a lawyer recognized by Best Lawyers in the practice area of Workers' Compensation Law - Claimants. John J. practices law in Philadelphia, Pennsylvania Best Lawyers has recognized John J. O'Donnell since 2024. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the professional regard in which John J. O'Donnell is held by other lawyers.

Joseph E. O'Neil is a lawyer recognized by Best Lawyers in the practice areas of Personal Injury Litigation - Defendants and Product Liability Litigation - Defendants. Joseph E. practices law in Chesterbrook, Pennsylvania Best Lawyers has recognized Joseph E. O'Neil since 2013. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the professional regard in which Joseph E. O'Neil is held by othe...

Kelly Anne Donohoe is a lawyer recognized by Best Lawyers in the practice area of Real Estate Law. Kelly Anne practices law in Philadelphia, Pennsylvania Best Lawyers has recognized Kelly Anne Donohoe since 2026. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the professional regard in which Kelly Anne Donohoe is held by other lawyers.

A graduate of the University of Pennsylvania and its law school, Marc Jonas is co-chair of the firm's Land Use and Zoning practice group. He has extensive experience in real estate, land use, municipal law, and zoning matters, representing individuals, businesses, institutions, non-profit organizations and municipalities. Marc has practiced land use and real estate law for more than 30 years. In his career, Marc has appeared as counsel in Pennsylvania state and federal courts in matters invol...