Richtech Robotics Securities Case Accelerates After Microsoft Denial as Firms Seek Lead Plaintiff

Overview

• Multiple investor firms say a federal class action is pending in the District of Nevada (Diez v. Richtech Robotics Inc., No. 26-cv-00231) alleging violations of §§10(b), 20(a) and SEC Rule 10b-5.
• The filings focus on Richtech’s January 27 press release touting work through Microsoft’s AI Co‑Innovation Labs, which Microsoft later described as a standard, noncommercial customer program.
• Richtech shares jumped on the announcement, then fell more than 20% on January 29 and over 29% across two trading days after Hunterbrook Media reported Microsoft’s denial.
• On January 28, the company disclosed an at‑the‑market sale of 8.5 million Class B shares, which plaintiff firms highlight as dilutive and closely timed to the announcement.
• Investor notices set an April 3, 2026 deadline to seek lead‑plaintiff status for a class period spanning January 27 to January 29, 2026, with several filings specifying a cutoff at 12:00 p.m. ET on January 29, and Hagens Berman is soliciting whistleblowers as it investigates potential intentional misconduct.