Quoin Pharmaceuticals Ltd.

Except as set forth below, there have been no material changes in our risk factors from the risks previously reported in Part 1, Item 1A, “Risk Factors” of our Form 10-K. You should carefully consider the factors discussed in Form 10-K, which could materially affect our business, financial condition or future results. The risks described in our Form 10-K are not the only risks we face. Additional risks and uncertainties not currently known to us or that we currently deem to be immaterial also may materially adversely affect our business, financial condition and/or operating results. We may disclose changes to such factors or disclose additional factors from time to time in our future filings with the SEC.

Our failure to meet the continued listing requirements of The Nasdaq Capital Market could result in a delisting of our ADSs.

Our ADSs are listed on the Nasdaq Capital Market, which imposes, among other requirements, a minimum bid requirement.

On April 29, 2024, we received a letter from the Listing Qualifications staff of The Nasdaq Stock Market, LLC (“Nasdaq”) notifying the Company that the closing bid price per ADS was below the required minimum of $1.00 for a period of 30 consecutive business days and that the Company did not meet the Minimum Bid Price Requirements set forth in Nasdaq Listing Rule 5550(a)(2). Pursuant to Nasdaq Rule 5810(c)(3)(A), the Company had an initial period of one hundred eighty (180) calendar days, or until October 29, 2024, which was subsequently extended a further one hundred eighty (180) calendar days, or until April 28, 2025 (the “Compliance Period”), to regain compliance with Nasdaq’s Minimum Bid Price Requirement. To regain compliance with the Nasdaq Listing Rules, on April 9, 2025, we effected a change in the ratio of ADSs evidencing Ordinary Shares from one (1) ADS representing one (1) Ordinary Share to one (1) ADS representing thirty-five (35) Ordinary Shares. On April 29, 2025, we received a letter from Nasdaq stating that the Company’s closing bid price per ADS was at $1.00 or greater for the last 13 consecutive business days. Accordingly, we regained compliance with Listing Rule 5550(a)(2) and the matter was closed.

There can be no assurance that we will be able to maintain compliance with Nasdaq’s Minimum Bid Price Requirement for continued listing. If our ADSs are delisted from Nasdaq, it will have a material negative impact on the actual and potential liquidity of our securities, as well as a material negative impact on our ability to raise future capital.

If we fail to meet any of Nasdaq’s listing standards, our ADS will be subject to delisting. If that were to occur, our ADS would be subject to rules that impose additional sales practice requirements on broker-dealers who sell our securities. The additional burdens imposed upon broker-dealers by these requirements could discourage broker-dealers from effecting transactions in our ADS. This would adversely affect the ability of investors to trade our ADS and would adversely affect the value of our ADS. Delisting from Nasdaq would cause us to pursue eligibility for trading of our ADS on other markets or exchanges, or on an over-the-counter market. In such case, our stockholders’ ability to trade or obtain quotations of the market value of our ADS would be severely limited because of lower trading volumes and transaction delays. These factors could contribute to lower prices and larger spreads in the bid and ask prices of these securities. There can be no assurance that our ADS, if delisted from Nasdaq, would be listed on a national securities exchange, a national quotation service or the over-the-counter markets. Delisting from Nasdaq could also result in negative publicity, adversely affect the market liquidity of our ADS, decrease securities analysts’ coverage of us or diminish investor, supplier and employee confidence. In addition, our stock could become a “penny stock,” which would make trading of our ADS more difficult.

The delisting of our ADS from Nasdaq may make it more difficult for us to raise capital on favorable terms in the future, or at all. Such a delisting would likely have a negative effect on the price of our ADS and would impair your ability to sell or purchase our ADS when you wish to do so. Further, if our ADS were to be delisted from Nasdaq, our ADS would cease to be recognized as a covered security, and we would be subject to additional regulation in each state in which we offer our securities. Moreover, there is no assurance that the actions that we have taken to restore our compliance with the Nasdaq Minimum Bid Price Requirement will stabilize the market price

or improve the liquidity of our ADS, prevent our ADS from falling below the Nasdaq minimum bid price required for continued listing again or prevent future non-compliance with other applicable Nasdaq listing requirements.

We must raise additional capital to fund our operations in order to continue as a going concern.

At March 31, 2025, we had an accumulated deficit of approximately $59.0 million, cash and cash equivalent balances totaling $3.8 million and investments of $7.7 million. Despite our recent financing in December 2024, pursuant to which we raised gross proceeds of approximately $6.8 million, based on our current expected level of operating expenditures we believe our cash and cash equivalents and investments on hand, management has concluded that there is substantial doubt about our ability to continue as a going concern for a period of at least one year from the issuance of the unaudited consolidated financial statements included in this report. We will need to raise further capital through the sale of additional equity or debt securities or other debt instruments, strategic relationships or grants, or other arrangements to support our future operations. We do not expect to generate revenue from product sales unless and until we successfully complete development and obtain marketing approval for one or more of our product candidates, which we expect will take a number of years and is subject to significant uncertainty. If we are unable to improve our liquidity position, we may not be able to continue as a going concern. Our ability to continue as a going concern is dependent upon our ability to generate revenue and raise capital from financing transactions. There can be no assurance that we will be successful in accomplishing these objectives. Without such additional capital, we may be required to curtail or cease operations and be required to realize our assets and discharge our liabilities other than in the normal course of business which could cause investors to suffer the loss of all or a substantial portion of their investment.