LOS ANGELES, CA / ACCESSWIRE / February 20, 2021 / The Schall Law Firm, a national shareholder rights litigation firm, announces the filing of a class action lawsuit against Penumbra, Inc. ("Penumbra" or "the Company") (NYSE:PEN) for violations of §§10(b) and 20(a) of the Securities Exchange Act of 1934 and Rule 10b-5 promulgated thereunder by the U.