Quoin Pharmaceuticals Ltd. (QNRX) SEC Filings, Nov 2025-Feb 2026

Quoin Pharmaceuticals, Ltd. received an amended Schedule 13G showing that Stonepine Capital Management, Stonepine Capital, Stonepine GP and Jon M. Plexico together beneficially own 3,271,100 Ordinary Shares, representing 10.6% of the class as of the reported basis.

The stake is held through American Depositary Shares and warrants, including 93,460 ADSs, pre-funded warrants to acquire 81,212 ADSs and ordinary warrants to acquire 484,848 ADSs. The warrants are subject to a 9.9% beneficial ownership cap and are not currently exercisable. The filers state the securities are not held to change or influence control of Quoin.

Stonepine Capital Management, LLC has filed an initial ownership report as a 10% owner of Quoin Pharmaceuticals, Ltd. It indirectly holds 3,271,100 Ordinary Shares, which are represented by 93,460 American Depositary Shares, with each ADS equal to 35 Ordinary Shares.

Through an affiliated limited partnership, Stonepine also indirectly holds pre-funded warrants exercisable at any time for 81,212 ADS, plus Series H, I, J and K warrants, each covering 121,212 ADS at stated exercise prices. These securities are held for the benefit of partnership investors, and the filers disclaim beneficial ownership beyond their pecuniary interests.

Quoin Pharmaceuticals, Ltd. received a major shareholder disclosure showing that Aberdeen Group plc and its affiliate abrdn Inc. beneficially own 75,000 American Depositary Shares, representing 8.94% of this class. These ADSs each represent thirty-five ordinary shares.

The filing states that Aberdeen Group plc and abrdn Inc. share both voting and dispositive power over all 75,000 ADSs, with no sole authority reported. The holders certify that the securities were acquired and are held in the ordinary course of business and not for the purpose of changing or influencing control of Quoin Pharmaceuticals.

Quoin Pharmaceuticals Ltd. filed a Form 8-K describing a key regulatory step for its lead drug candidate QRX003, a late-stage topical treatment for the rare skin disorder Netherton Syndrome. The company has submitted an application to the Saudi Food and Drug Authority for Breakthrough Medicine Designation, a program intended to speed development, review and potential availability of medicines for serious conditions with high unmet need. Quoin believes QRX003 meets all SFDA eligibility criteria and states that, if the designation is granted, regulatory review could be accelerated and patient access in Saudi Arabia could begin as early as the second half of 2026. QRX003 already holds Orphan Drug and Pediatric Rare Disease designations from the U.S. FDA and Orphan Drug Designation from the European Medicines Agency. The drug is being tested in two late-stage pivotal whole-body clinical trials, with enrollment expected to complete in the first half of 2026 and top-line data anticipated in the second half of 2026. Subject to successful results, Quoin plans to submit a New Drug Application in the United States and other territories in late 2026 or early 2027. The company also reports that, as of January 20, 2026, it had 1,616,179 American Depositary Shares outstanding, each representing thirty-five ordinary shares.

Quoin Pharmaceuticals Ltd. is registering up to 10,045,455 American Depositary Shares (ADSs) for resale by investors who participated in an October 2025 private placement.

These ADSs include shares already issued and shares underlying pre-funded and ordinary warrants, and the company states that issuing all of them could significantly increase the ADSs in the public market. The ADSs covered by this prospectus that are not currently outstanding, including 1,968,939 Pre-Funded ADSs and 8,036,364 Ordinary Warrant ADSs, represent approximately 1,193% of the 838,976 ADSs outstanding as of November 3, 2025, so existing holders could experience substantial dilution.

Quoin will not receive proceeds from shareholder resales, but it could receive up to $88.7 million if all Ordinary Warrants are exercised for cash, which it plans to use for general corporate purposes, including advancing its rare-disease pipeline led by QRX003 for Netherton Syndrome and related orphan-designated programs.

Quoin Pharmaceuticals, Ltd. reported a new stock option grant to its Chief Financial Officer, Sally Bridget Lawlor, in a Form 4 filing. The grant covers an option to buy 10,330 American Depositary Shares (ADSs) at an exercise price of $19.36 per ADS, with each ADS representing thirty-five ordinary shares of Quoin. The option was approved by the company’s Compensation Committee on December 1, 2025 and expires on December 1, 2035.

The option vests over four years, with 20% of the ADSs vesting on each of December 1, 2026, 2027 and 2028, and the remaining 40% vesting on December 1, 2029. This filing reflects an equity-based component of the CFO’s compensation, designed to align her interests with long-term shareholder value.

Quoin Pharmaceuticals Ltd. reported that its Compensation Committee approved new standard forms of stock option award agreements for directors and executive officers under the company’s 2025 Equity Incentive Plan. These agreements are designed to allow a range of vesting schedules and terms within what the plan permits. If a grantee dies or becomes disabled, unvested options are forfeited, while vested options may be exercised for up to one year, subject to their stated expiration date. If a grantee is terminated for cause, all options, whether vested or unvested, are terminated and may be subject to recoupment by the company. For terminations for other reasons, unvested options are forfeited and vested options generally remain exercisable for up to three months, but not beyond their original expiration date.

Quoin Pharmaceuticals (QNRX) reported a technical milestone: it achieved the target loading concentrations for two topical rapamycin delivery technologies. The proprietary topical formulation reached a rapamycin loading concentration of 4% w/w, and a proprietary dermal patch system reached 5% w/w.

The company plans to begin manufacturing clinical trial and stability batches from at least one of these technologies this quarter, with the aim of commencing clinical testing in the first half of 2026. Initial clinical targets include Microcystic Lymphatic Malformations and Venous Malformations, areas where there are currently no FDA‑approved treatments or cures. The announcement was furnished under Regulation FD and includes forward‑looking statements subject to risks and uncertainties.

Quoin Pharmaceuticals Ltd. (QNRX) filed a Form S-3 to register the resale of up to 10,045,455 American Depositary Shares (ADSs) (representing 351,590,925 ordinary shares) by the selling shareholders, from time to time after effectiveness. The company is not offering these ADSs and will not receive proceeds from any resales.

Quoin notes it could receive up to $88.7 million only if the accompanying warrants are exercised for cash. The filing follows an October 2025 private placement that included Closing ADSs, Pre-Funded Warrants and Series H, I, J and K warrants. The company highlights potential dilution; the ADSs covered here (and not currently outstanding) are approximately 1,193% of ADSs outstanding as of the prospectus date.

As context, 838,976 ADSs were outstanding as of November 3, 2025. The registration fulfills contractual obligations under a registration rights agreement and allows selling holders to dispose of their ADSs via various permitted methods.