Going public: Cision, a distributor of Web-based public relations products such as PR Newswire, is becoming a public company by merging with a D.C. public investment entity known as Capitol Acquisition Corp. III in a deal that values the company at $2.4 billion. Capitol’s chairman and chief executive is Washington investor Mark D. Ein, majority owner of the World Team Tennis League. New order: Gaithersburg, Md.based Emergent BioSolutions said it has signed a $100 million, twoyear contract with the federal government to deliver an anthrax vaccine for emergency stockpiles. The order follows an earlier $911 million contract for BioThrax with the federal Centers for Disease Control and Prevention, and it comes as Emergent has renegotiated a contract for a separate next-generation anthrax vaccine that ultimately reduced the cost from $1.6 billion to $1.5 billion. Stepping down: General Motors chief executive Mary Barra told Falls Church, Va.-based General Dynamics that she would not stand for reelection to the company’s board, saying her decision was not the result of any disagreement with the defense contractor. Catherine B. Reynolds, chairman and chief executive of EduCap, was nominated to take her place.