X0609 4 2026-03-26 1 0001671502 Quoin Pharmaceuticals, Ltd. QNRX 0001440771 Stonepine Capital Management, LLC false 2900 NW CLEARWATER DRIVE SUITE 100-11 BEND OR 97703 0 0 1 0 0 On March 26, 2026, the Issuer filed a Form 10-K reporting it has 63,126,930 Ordinary Shares outstanding, represented by 1,803,626 American Depositary Shares outstanding. All of the warrants owned by the reporting person are subject to a 9.99% beneficial ownership limitation. As a result of the change in the number of Ordinary Shares outstanding, the reporting person has ceased to beneficially own more than 10% of the outstanding Ordinary Shares. /s/ Jon M. Plexico, Managing Member of Stonepine Capital Management, LLC 2026-03-31