(December 12, 2017, 12:40 PM EST) -- NEW YORK — Dismissal of federal securities law claims in a class action lawsuit against a property and casualty insurer and certain of its executive officers and directors, its independent auditors and underwriters of the company’s various stock offerings is not necessary because the defendants admitted to their alleged misrepresentations in the company’s restatement of its 2016 financial results, shareholders argue in a Dec. 1 motion to dismiss (In re AmTrust Financial Services Inc. Securities Litigation, No. 17-1545, S.D. N.Y.)....