20% of OST-HER2 treated dogs survived 2-year vs. 1% in control group (p = 0.00995) Over 15,000 dogs per year diagnosed with osteosarcoma Company expects to submit U.S. Department of Agriculture meeting request to gain alignment on regulatory path towards conditional approval in the third quarter of 2026 OS Therapies reiterates plan to distribute OS Animal Health shares to shareholders OS Animal Health plans crowdfunding to expand shareholder base to meet U.S. national exchange initial listing standards, with indications of interest now being received Rockville, Maryland--(Newsfile Corp. - June 26, 2026) - OS Animal Health, Inc. ("OS Animal Health" or "the Company"), the wholly-owned animal health subsidiary of OS Therapies, Inc. (NYSE American: OSTX) ("OS Therapies"), the world leader in gene-edited, Listeria-based cancer immunotherapies, today announced the peer-reviewed publication of data from the Phase 2 clinical trial of OST-HER2, together with palliative radiation therapy ("RT"), aimed at preventing amputation in frontline canine osteosarcoma.
