Apogee Therapeutics, Inc. is a clinical-stage biotechnology company. The Company is engaged in developing differentiated biologics for the treatment of atopic dermatitis (AD), chronic obstructive pulmonary disease (COPD), asthma and other inflammatory and immunology (I&I) indications with high unmet need. Its advanced programs are APG777 and APG808, which are developed for the treatment of AD and COPD, respectively. APG777 is a subcutaneous (SQ) extended half-life monoclonal antibody (mAb) targeting IL-13. APG808 is an SQ extended half-life mAb targeting IL-4Rα. Its earlier-stage programs, APG990 and APG222, utilize advanced antibody engineering to target OX40L and both IL-13 and OX40L, which are developed for the treatment of AD. APG990 is an SQ extended half-life mAb targeting OX40L for the treatment of AD. APG222 is one or more extended half-life SQ antibodies targeting both IL-13 and OX40L, which has the potential to improve outcomes in AD.