Immunomedics

(IMMU) - Get Report

named Cynthia Sullivan as the company's new chief executive and appointed Mary Paetzold to the board.

Sullivan has been with the biopharmaceutical company since 1985, most recently as president and chief operating officer. Prior to joining the company, Sullivan worked at

Ortho Diagnostic Systems

, a unit of

Johnson & Johnson

(JNJ) - Get Report

. She has filled a new seat on the board of directors. Paetzold fills a vacant seat on the board, which now has six members.

David Goldenberg will continue as the company's chairman.

In recent

Nasdaq

trading, Immunomedics, which is based in Morris Hills, N.J., gained 6 cents, or 0.8%, to $8.31.