(June 4, 2020, 2:46 PM EDT) -- BOSTON — A purported plaintiff class asserts in a May 26 complaint filed in Massachusetts federal court that an employer breached its fiduciary duty and engaged in prohibited transactions while sponsoring a 401(k) employee pension benefit plan, resulting in millions of dollars in losses for plan participants (David Turner, et al., v. Schneider Electric Holdings Inc., et al., No. 20-11006, D. Mass.)....