SAN DIEGO, May 14, 2026 (GLOBE NEWSWIRE) -- Robbins LLP is Investigating Allegations that Immutep Limited (IMMP) Misled Investors Regarding the Viability and Efficacy of its Drug Candidate On May 5, 2026, a class action was filed on behalf of all investors who purchased or otherwise acquired Immutep Limited American Depository Receipts (NASDAQ: IMMP) between March 24, 2025 and March 12, 2026. Immutep is an Australian-based biotechnology company focused on developing Lymphocyte Activation Gene-3 (LAG-3) related immunotherapies for cancer and autoimmune diseases.