(November 14, 2019, 4:54 PM EST) -- SAN FRANCISCO — A shareholder lacks standing to bring federal securities law claims against a platform provider of a business technology platform, certain of its executive officers and members of its board of directors because he is unable to trace the company shares he purchased to any false or misleading registration statement, defendants argue in a Nov. 8 motion to dismiss filed in California federal court (Tyler Dennee v. Slack Technologies Inc., et al., No. 19-5857, N.D. Calif.)....