Shearman & Sterling has taken the lead role alongside Wachtell Lipton Rosen & Katz on a chemical company acquisition worth approximately $18.8bn (£9.5bn). US chemical giant Dow Chemical Company agreed to buy Rohm and Haas in the deal, which closed on 10 July.

Leading the Wachtell team advising Rohm and Haas is corporate partner and co-chairman of the executive committee Daniel Neff and corporate partner Stephanie Seligman in New York.