Sills Cummis & Gross has added three new members in New York. Intellectual property litigator John T. Gallagher was with Dickstein Shapiro. Corporate lawyer Paul M. Sayegh, who represents financial institutions on commercial finance, secured and unsecured lending and asset-based lending transactions, was with LeClairRyan. And Jonathan Young rejoins the firm in the litigation group from Harleysville Insurance, where he was senior vice president and chief claims officer.

• Corporate attorney John T. O’Connor has joined Hunton & Williams as a partner. Mr. O’Connor, who was with Sadis & Goldberg, focuses on mergers and acquisitions, private equity and securities matters and has extensive experience in the energy, banking and financial services sectors.