Wasserstein & Co. has agreed to acquire ALM Media from Apax Partners and RBS. The investment will be made through Wasserstein Partners III. The Ontario Pension Board, Pantheon, the Honeywell pension and HighVista Strategies are co-investing in the deal. ALM is a provider of specialized business news, research and information, focused primarily on the legal and commercial real estate sectors. The company has about 700 employees and a portfolio of more than 350 print and digital publications, including The New York Law Journal, The American Lawyer and The National Law Journal.