NEW YORK — A federal judge on August 27 denied a $2 million fee request from the law firm that represented objectors to a $590 million shareholder class action settlement against Citigroup Inc. approved in August.

U.S. District Judge Sidney Stein rejected arguments made by Wolf Haldenstein Adler Freeman & Herz that work for its clients — along with its work as lead counsel in a parallel putative class action brought on behalf of Citi employee shareholders — led to modifications in the terms of the settlement approved by Stein in August.