David A. Mazie

Mr. Portnoy is a business litigator who handles major commercial disputes for a wide range of companies and individuals. From large-cap industry leaders to cutting-edge start-ups, Mr. Portnoy’s clients rely on him to deliver efficient, effective solutions for their most complex legal matters. He is Co-Chair of the firm’s Securities Team. He also focuses his practice on high-stakes breach of contract disputes and professional negligence claims in the financial and legal services in...

Rosemary Gousman is the managing partner of the firm's New Jersey office and has devoted her extensive career to the practice of labor and employment law. Rosemary’s diverse practice includes both litigation and counseling of employers. She litigates cases involving discrimination, wrongful discharge, whistleblower claims, wage and hour laws, common law contract and tort claims, traditional labor law involving union-management relations, and employee benefits disputes. Rosemary has sign...

Following a career representing closely-held business entities in corporate and real estate transactions, Ralph Lowenbach now devotes his practice to mediating business disputes. He also serves as an expert witness in business-related legal malpractice matters. Ralph has extensive mergers and acquisitions experience. He has been extensively involved in real estate acquisition and development, including related environmental issues, for major retailer and office/warehouse developers. He has al...

Tricia B. O’Reilly is an accomplished litigator and trial attorney with more than twenty years of experience in the fields of commercial litigation, employment law, and internal investigations. As a commercial litigator, Tricia has assisted clients across a broad range of industries in matters involving commercial contract disputes, shareholder oppression, unfair competition, fraudulent business practices claims, intellectual property, and antitrust litigation, and in defending complex,...

Kevin E. Wolff is a shareholder of the Firm. Kevin’s practice concentrates in the areas of insurance and reinsurance coverage, including general liability, property, environmental, employment, errors and omissions, directors and officers, marine, technology matters. Kevin’s insurance and reinsurance practice is limited to the representation of insurers and reinsurers. He also counsels and advises clients on the drafting of policy language, contracts and agreements, and represents ...

Kristin Sostowski is a Director with Gibbons P.C. in Newark, New Jersey, where she is a member of the Employment & Labor Law Department and serves as Team Leader of the firm’s Higher Education practice. Kristin balances her practice between employment litigation and counseling, representing New Jersey and national employers and providing strategic counsel to clients at all phases of the employment relationship. Known for her tenacious advocacy, strategic approach, and attention to d...

Beth S. Rose is a Member of Sills Cummis & Gross, where she is Chair of the Product Liability Practice Group and a Co-Chair of the Litigation Department. She has tried complex product liability cases to verdict in state and federal courts throughout the country. Ms. Rose is the lawyer to whom General Counsel turn when they need an aggressive but practical approach to “bet the company” product liability matters. Clients rely on her expertise to develop successful and cost-effec...

Susan Dromsky-Reed helps families and individuals create plans which can simply and easily transfer assets to their heirs, while taking into consideration necessary income, estate, and inheritance tax planning. Her goal is to provide peace of mind and to promote family harmony, during the planning process and during estate administration. As part of her practice, she provides individuals and families with planning and tax advice regarding spousal, intergenerational, and business succession; c...

Peter M. Perkowski, Jr. is a top attorney recognized by Best Lawyers in the practice area(s) of Insurance Law. Peter M., who practices law in Madison, New Jersey, has been recognized since 2024. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Peter M. is held by other top lawyers in the same geographic and legal practice area.

John D. Fanburg has more than 30 years of experience in health and hospital law, with an emphasis on corporate, transactional, and regulatory matters for physicians and health care institutions. A recognized leader in this sector, John is known for excellence in transactions, perseverance in deal-making, and strength in corporate, M&A, and regulatory matters. His broad experience representing major hospitals, diverse medical groups, solo practitioners, and statewide physician specialty or...