Citius Oncology Reports Preliminary Q4 FY2026 LYMPHIR Wholesaler Unit Sales More Than Doubling 120% To 792 Units, With 950 Institutional Vial Orders And 54 Institutions Ordering The CTCL Treatment

itius Oncology, Inc. ("Citius Oncology" or the "Company") (NASDAQ:CTOR), an oncology-focused biopharmaceutical company and majority-owned subsidiary of Citius Pharmaceuticals, Inc. ("Citius Pharma") (NASDAQ:CTXR), today announced preliminary, unaudited LYMPHIR® (denileukin diftitox-cxdl) unit sales to U.S. wholesalers and institutional vial orders for the fiscal fourth quarter ended September 30, 2026.

"The fiscal fourth quarter showed continued institutional demand for LYMPHIR. Unit sales to wholesalers more than doubled as our expanded commercial team reached nationwide coverage in August," said Leonard Mazur, Chairman and Chief Executive Officer of Citius Oncology. "We are now more than halfway to our goal of having LYMPHIR on formulary at 100 priority institutions by calendar year-end. As we enter fiscal 2027, we expect the momentum we built in the fourth quarter to carry forward, with growing institutional demand, deeper penetration into academic and community treatment centers, and continued sales growth as LYMPHIR becomes further established in CTCL."

Preliminary Fiscal Fourth Quarter 2026 Highlights (unaudited)

• 792 units purchased by U.S. wholesalers for the three months ended September 30, 2026, compared to 360 units for the three months ended June 30, 2026, an increase of 120%;
• 950 LYMPHIR vials ordered by prescribing centers from wholesalers during the fiscal fourth quarter, compared to 926 for the fiscal third quarter; and
• As of the date of this release, 54 institutions have now ordered LYMPHIR, compared to 44 as of August 14, 2026, as last reported.

The unit information in this release is preliminary and unaudited, is based on management's current estimates, and is subject to completion of the Company's year-end closing procedures and the audit of its fiscal 2026 financial statements. Actual results may differ, and the Company's independent registered public accounting firm has not audited, reviewed or performed any procedures on these preliminary figures. The Company recognizes revenue when wholesaler orders are fulfilled. Accordingly, the Company's revenue is based on LYMPHIR units sold to wholesalers, net of estimated gross-to-net adjustments, rather than on institutional vial orders from wholesalers by institutions.  Citius Oncology expects to report complete fiscal fourth quarter and fiscal year 2026 results in December 2026 with the filing of its Annual Report on Form 10-K.