Prior to joining The Washington Post Company, Rosberg was with Computer Associates International, Inc., a computer software company headquartered in Islandia, NY, where he was senior vice president and general counsel and then senior vice president - business development. Before joining CA, Rosberg was for ten years a partner in the Washington office of Dewey Ballantine, a New York law firm, where he specialized in litigation and federal regulatory matters. From 1974 to 1982, Rosberg was on the faculty of the University of Michigan Law School, first as an assistant professor and later associate professor and then full professor. On leave of absence from the University of Michigan, Rosberg served in 1980-1981 as Counselor on International Law in the Office of the Legal Adviser of the U.S. Department of State. There he helped establish the U.S.-Iran Claims Tribunal that has adjudicated claims between Iran and the United States under the settlement that freed the U.S. Embassy hostages. At the completion of his State Department appointment Rosberg remained in Washington, DC, first at the law firm of Califano, Ross & Heineman, and then, beginning in January 1983, as a partner at Dewey Ballantine. He has also taught law at Georgetown University Law Center, where he was Distinguished Visitor from Practice in 1986-1987, and at the University of Texas Law School in the summer of 1978. Rosberg graduated in 1968 from Harvard College, where he was assistant managing editor of The Harvard Crimson, and then attended Harvard Law School, where he was Supreme Court Note Editor of The Harvard Law Review. Following his 1971 law school graduation, he served as a law clerk to Chief Judge David L. Bazelon of the United States Court of Appeals for the District of Columbia Circuit and then as a clerk to Mr. Justice William J. Brennan, Jr. of the United States Supreme Court. Rosberg is chairman of the board of BrassRing, Inc., a talent management company headquartered in Waltham, MA, and serves on the board of Classified Ventures in Chicago, IL. He is also chairman of the board of trustees of The Henry J. Kaiser Family Foundation, a private foundation headquartered in Menlo Park, CA, concerned with health policy, and is a member of the board of trustees of The Studio Theatre in Washington, DC.