(NASDAQ:PUBM) LOS ANGELES, Sept. 3, 2025 /PRNewswire/ -- The Schall Law Firm, a national shareholder rights litigation firm, reminds investors of a class action lawsuit against PubMatic, Inc. ("PubMatic" or "the Company") (NASDAQ: PUBM) for violations of §§10(b) and 20(a) of the Securities Exchange Act...