The Philadelphia Business Journal reports Gibson will replace Gary J. Lesneski as president of the 175-lawyer firm. Lesneski, who had been with Archer & Greiner for 35 years, is leaving to become senior executive vice president and general counsel of The Cooper Health System.
Gibson is an environmental litigator who represents chemical and petroleum companies. He will take over as president of the firm Oct. 1.
Archer & Greiner is based in Haddonfield, New Jersey, a suburb of Philadelphia. The firm also has offices in Philadelphia, Flemington & Princeton New Jersey, Wilmington, Delaware and New York City.