LA JOLLA, Calif., June 30, 2026 (GLOBE NEWSWIRE) -- MediciNova, Inc., a biopharmaceutical company traded on the NASDAQ Global Market (NASDAQ: MNOV) and the Standard Market of the Tokyo Stock Exchange (Code Number: 4875), today provides shareholders a corporate update in the following Letter to Stockholders from CEO Yuichi Iwaki, M.D.