ALTEOGEN Inc. ALTEOGEN Inc. (196170.KQ), a South Korea-based biopharmaceutical company founded in 2008 and headquartered in Daejeon, develops long-acting biobetters, proprietary antibody-drug conjugates, and complex antibody biosimilars utilizing its proprietary NexP platform for protein fusion technology, NexMab for antibody-drug conjugate manufacturing, and Hybrozyme for recombinant human hyaluronidase-based subcutaneous delivery; its pipeline includes ALT-P1, a long-acting human growth hormone in Phase IIa trials for growth hormone deficiency; ALT-Q2, a long-acting coagulation factor VIIa in development for hemophilia; ALT-P7, a Phase I targeted therapy for breast and gastric cancer; ALT-Q5, an antibody-drug conjugate for ovarian cancer; ALT-LS2, a subcutaneous trastuzumab formulation for breast and gastric cancer; ALT-L9, an Eylea (aflibercept) biosimilar in Phase III for wet age-related macular degeneration; and ALT-L2, a Herceptin (trastuzumab) biosimilar in Phase II for breast cancer, with partnerships including Kissei Pharmaceutical for ALT-L9 and Cristalia for ALT-L2. The company targets global markets in oncology, endocrinology, ophthalmology, and hematology, primarily serving pharmaceutical partners and end-users through technology licensing, joint development, and biosimilar commercialization in regions including Asia, Europe, and the Americas. In recent developments, ALTEOGEN Inc. secured a landmark partnership with AstraZeneca in March 2025 valued at up to $1.35 billion across two contracts for its ALT-B4 hyaluronidase (Hybrozyme) technology to enable subcutaneous formulations of multiple oncology assets; entered a collaboration with Daiichi Sankyo for subcutaneous Enhertu; received European Commission approval in September 2025 for Eyluxvi (ALT-L9), its second biosimilar launch following Herceptin in China via partner Qilu; and maintains ongoing alliances with Merck for Keytruda subcutaneous formulations and other top global pharmas for hyaluronidase applications.