TNXP ▲ +3.5% - Tonix Pharmaceuticals Holding Corp. $TNXP - Tonix Pharmaceuticals Announces Second Major Managed Medicare Payer Agreement for TONMYA® Tonix Pharmaceuticals rose 3.5% following its announcement of a second major managed Medicare payer agreement for TONMYA®, expanding access to the monkeypox vaccine across a larger portion of the insured patient population. The addition of another major payer to cover the drug reduces reimbursement uncertainty and could meaningfully increase the addressable market for the company's vaccine product. 22-SEP-2026 07:00 AM ET