Paul Ostien III

Paul Ostien III, Director
Gordon, Fournaris & Mammarella, P.A.

P: (302) 652-2900|F: (302) 652-1142

PAUL H. OSTIEN, III is a Director at the Wilmington, Delaware law firm of Gordon, Fournaris & Mammarella. Tres earned his Bachelor’s degree from Dickinson College, where he also received a Regular Army commission through the college’s Army R.O.T.C. program.  After serving three years in the U.S. Army, he entered the U.S. Army Reserve in order to earn his Juris Doctor from Vermont Law School and Master of Laws in Taxation from Villanova University School of Law.  Tres is admitted to practice law in Delaware, New Jersey and Pennsylvania.

Tres joined the firm in November 2017.  He began practicing law in Wilmington, Delaware in the transactional practice group of a major Delaware law firm, where among other things, he advised corporate trustees in capital markets transactions, provided outside general counsel services to businesses in energy services and other industries, served as a principal drafter of Delaware’s Revised Captive Insurance Company Act and worked on the creation of the Delaware Captive Insurance Association.  He left private practice in 2007 and held various in-house commercial and general counsel roles with international power generation and industrial equipment manufacturers and service providers as well as a specialty build-to-print manufacturer.  More background on Tres’ skills and experience can be found on LinkedIn.

Bar Associations
Delaware State Bar Association, New Jersey State Bar Association, Pennsylvania Bar Association


Villanova University School of Law, Master of Laws (LL.M.) in Taxation
Vermont Law School, Juris Doctor
Dickinson College, Bachelor of Science