X0609 4 2026-08-27 0 0001671502 Quoin Pharmaceuticals, Ltd. QNRX 0001274225 LANGER DENNIS false C/O QUOIN PHARMACEUTICALS LTD., 42127 PLEASANT FOREST COURT ASHBURN VA 20148 1 0 0 0 0 ADSs 2026-08-27 4 A 0 34534 5.15 A 56243 D Ordinary Shares are represented by American Depositary Shares ("ADSs"). Each ADS represents thirty-five (35) ordinary shares of the Issuer. On August 27, 2026, the Issuer and the Reporting Person, entered into an exchange agreement, pursuant to which $177,849 of accrued interest outstanding ("Outstanding Debt") owed in connection with a note previously purchased by the Reporting Person was exchanged for 34,534 ADSs. The exchange agreement and the exchange of the Outstanding Debt for the ADSs was approved in advance by the Issuer's audit committee and board of directors. /s/ Dennis Langer 2026-08-28