Nathan A. Goldberg, a litigator, has been promoted to partnership at Sullivan & Worcester.

Ronald Kreismann has joined labor and employment firm Ford & Harrison as a partner. He was a partner at Paul Hastings Janofsky & Walker.

Mary Kuan has joined Kleinberg, Kaplan, Wolff & Cohen as of counsel in the corporate practice. She was vice president in the derivatives legal group at BNP Paribas.