RTW Investments, LP Reports New 6.3% Stake in Celcuity Inc. (CELC)

On May 15, 2026, RTW Investments, LP and Roderick Wong, M.D. filed a Schedule 13G disclosing a new 6.3% ownership stake in Celcuity Inc. (CELC). The reporting persons beneficially own 3,039,621 shares of common stock as of the event date of March 31, 2026. RTW Investments, a Delaware limited partnership, serves as the investment adviser to certain funds that directly hold the shares, while Dr. Wong serves as the Managing Partner and Chief Investment Officer. The filing indicates that the shares were acquired in the ordinary course of business and not for the purpose of influencing or changing control of the issuer. The ownership percentage is based on 48,336,675 shares outstanding as of March 17, 2026. This filing represents a significant increase from a previous 0.0% position, establishing the reporting persons as substantial shareholders in the clinical-stage biotechnology company.