John L. "Jack" Slimm

Stephanie Zane is a top attorney recognized by Best Lawyers in the practice area(s) of Family Law. Stephanie, who practices law in Voorhees, New Jersey, has been recognized since 2025. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Stephanie is held by other top lawyers in the same geographic and legal practice area.

John represents a broad array of clients, ranging from Fortune 500 companies to smaller closely held businesses, facing diverse environmental issues. John is co-practice leader of the firm's New Jersey practice, is a partner in the firm’s environmental litigation group, and is also regularly called upon by clients to handle site remediation matters and complex negotiations with government entities and private parties. John’s work on contaminated sediment sites and related litigati...

Greg has wide-ranging experience representing public utilities, unregulated energy companies, electric generation companies, educational and governmental institutions, and other industry participants. He maintains a comprehensive energy and utility regulatory and transactional practice, with expertise in base rate cases, rate clause filings, reliability issues, public utility project siting petitions and appeals, mergers and acquisitions, renewable energy (including solar and offshore wind pr...

Andrew Knox joined Timoney Knox as an associate in 2018 and concentrates his practice in the area of education, trust and estates litigation, personal injury, medical malpractice, product liability as well as commercial and civil litigation. While working full time, Mr. Knox attended the evening Division of Widener University School of Law. Mr. Knox is following in the footsteps of his great-grandfather, grandfather, father, and uncle in practicing law. Mr. Knox has been honored with inclusio...

Marc A. Rollo is a top attorney recognized by Best Lawyers in the practice area(s) of Environmental Law and Litigation - Environmental. Marc A., who practices law in Voorhees, New Jersey, has been recognized since 2012. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Marc A. is held by other top lawyers in the same geographic and legal practice area.

Jonathan Spergel is the immediate past managing partner of Manko, Gold, Katcher & Fox LLP in Bala Cynwyd, Pennsylvania, the environmental and energy law firm with which he started his legal career in 1993. He handles a wide variety of environmental legal issues, including the environmental aspects of commercial transactions and brownfields sites, environmental insurance procurement and coverage issues, public funding opportunities, regulatory compliance counseling, and litigation for comm...

Debra S. Rosen is a top attorney recognized by Best Lawyers in the practice area(s) of Environmental Law and Litigation - Environmental. Debra S., who practices law in Voorhees, New Jersey, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Debra S. is held by other top lawyers in the same geographic and legal practice area.

Mark J. Oberstaedt is a top attorney recognized by Best Lawyers in the practice area(s) of Commercial Litigation. Mark J., who practices law in Voorhees, New Jersey, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Mark J. is held by other top lawyers in the same geographic and legal practice area.

Jerry Kristal is the managing attorney of our New Jersey office, located in the city of Cherry Hill. In that capacity, he oversees the activities of a team of six attorneys and approximately 20 support personnel as they together strive to obtain justice for clients across the Garden State, as well as in neighboring Pennsylvania and elsewhere around the Mid-Atlantic region. He also is responsible for evaluating prospective cases: drawing upon his more than three decades of experience in the pr...

Maureen T. Coghlan is a top attorney recognized by Best Lawyers in the practice area(s) of Litigation - Environmental. Maureen T., who practices law in Voorhees, New Jersey, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Maureen T. is held by other top lawyers in the same geographic and legal practice area.