 Boston, Massachusetts--Newsfile Corp. - March 5, 2021 - The Thornton Law Firm announces that a class action lawsuit has been filed on behalf of investors of Penumbra, Inc. NYSE: PEN. The case is currently in the lead plaintiff stage. Investors who purchased Penumbra stock or other securities between August 3, 2020 and December 15, 2020 may contact the Thornton Law Firms investor protection team by visiting to submit their information. Investors may also email... 