 NEW YORK, April 12, 2021 PRNewswire -- WHY: Rosen Law Firm, a global investor rights law firm, reminds purchasers of the securities of XL Fleet Corp. NYSE: XL between October 2, 2020 and March 2, 2021, inclusive the Class Period, of the important May 7, 2021 lead plaintiff deadline. SO WHAT: If you purchased XL Fleet securities during the Class Period you may be entitled to compensation without payment of any out of pocket fees or costs through a contingency fee arrangement. 