[424B5] WESTWATER RESOURCES, INC. Prospectus Supplement (Debt Securities)
WWR amended its at-the-market equity program, increasing the amount of common stock it may offer and sell through H.C. Wainwright & Co. to $75,000,000 under its existing ATM Agreement, after effectiveness of this prospectus supplement.
Sales, if any, may be made as “at-the-market” offerings on NYSE American or other U.S. trading markets, to or through market makers, directly to the sales agent acting as principal, in negotiated transactions at prevailing market prices or prices related to them, and by other methods permitted by law. The sales agent will use commercially reasonable efforts and is not obligated to sell any specific amount, and there is no escrow arrangement.
This amount excludes approximately $55 million of shares previously sold under the ATM as of the supplement date. WWR’s common stock trades on NYSE American under “WWR,” and the last reported sale price was $2.10 on October 16, 2025.
WWR ha modificato il suo programma di offerte azionarie sul mercato, aumentando la quantità di azioni ordinarie che può offrire e vendere tramite H.C. Wainwright & Co. a $75,000,000 ai sensi del suo attuale Accordo ATM, dopo l'efficacia di questo supplemento al prospetto.
Le vendite, se presenti, possono essere effettuate come offerte sul mercato su NYSE American o altri mercati di negoziazione statunitensi, a o tramite market maker, direttamente all'agente di vendita che agisce come principale, in transazioni negoziate ai prezzi di mercato correnti o a prezzi correlati, e mediante altri metodi consentiti dalla legge. L'agente di vendita farà sforzi commercialmente ragionevoli e non è obbligato a vendere una quantità specifica, e non vi è alcun accordo di deposito.
Questa somma esclude circa 55 milioni di azioni precedentemente vendute sotto l'ATM alla data del supplemento. Le azioni ordinarie di WWR sono negoziate su NYSE American con il simbolo “WWR”, e l'ultimo prezzo di vendita riportato è stato $2.10 il 16 ottobre 2025.
WWR modificó su programa de acciones en el mercado, aumentando la cantidad de acciones comunes que puede ofrecer y vender a través de H.C. Wainwright & Co. a $75,000,000 conforme a su Acuerdo ATM existente, tras la entrada en vigor de este suplemento de folleto.
Las ventas, si las hubiera, pueden realizarse como ofertas “en el mercado” en NYSE American u otros mercados estadounidenses, a través de creadores de mercado, directamente al agente de ventas que actúa como principal, en transacciones negociadas a precios de mercado vigentes o a precios relacionados con ellos, y por otros métodos permitidos por la ley. El agente de ventas hará esfuerzos comercialmente razonables y no está obligado a vender una cantidad específica, y no hay ningún acuerdo de custodia.
Esta cantidad excluye aproximadamente 55 millones de acciones vendidas previamente bajo el ATM a la fecha del suplemento. Las acciones ordinarias de WWR cotizan en NYSE American bajo el símbolo “WWR”, y el último precio de venta reportado fue de $2.10 el 16 de octubre de 2025.
WWR은 ATM 계약하에 H.C. Wainwright & Co.를 통해 제공하고 매도할 수 있는 보통주 금액을 기존 ATM 계약 하에서 $75,000,000으로 증가시키며 시장에서의 공모를 개정했다. 이 증권설명 보충서의 발효 이후.
매각은 주식시장인 NYSE American 또는 미국 내 다른 거래 시장에서, 시장조성자와의 거래를 통해, 또는 매수대리인이 주도하는 직접 거래, 협상된 거래에서 현 시세 또는 그것과 관련된 가격으로 체결될 수 있으며, 법에서 허용하는 다른 방법으로도 가능하다. 매도 대리인은 상업적으로 합리적인 노력을 사용할 것이며 특정 금액을 팔아야 할 의무는 없으며 에스크로 계약은 없다.
이 금액은 약 5,500만 주의 주식을 보충일 기준으로 ATM 하에 이미 매도한 것을 제외한다. WWR의 보통주는 NYSE American에서 “WWR”로 거래되며, 마지막으로 보고된 매도가는 2025년 10월 16일 2.10달러였다.
WWR a modifié son programme d’actions ordinaires sur le marché, augmentant le montant d’actions ordinaires qu’elle peut offrir et vendre par l’intermédiaire de H.C. Wainwright & Co. à 75 000 000 $ dans le cadre de son accord ATM existant, après l’entrée en vigueur de ce supplément de prospectus.
Les ventes, le cas échéant, peuvent être effectuées en tant qu’offres « sur le marché » sur le NYSE American ou d’autres marchés américains, à travers des teneurs de marché, directement à l’agent de vente agissant comme preneur principal, dans des transactions négociées à des prix du marché en vigueur ou à des prix qui y sont liés, et par d’autres méthodes autorisées par la loi. L’agent de vente déploiera des efforts raisonnables sur le plan commercial et n’est pas obligé de vendre une quantité précise, et il n’y a pas d’accord de séquestre.
Cette somme exclut environ 55 millions d’actions déjà vendues sous l’ATM à la date du supplément. Les actions ordinaires de WWR se négocient sur le NYSE American sous le symbole « WWR », et le dernier prix de vente annoncé était de 2,10 $ le 16 octobre 2025.
WWR hat sein Programm für Aktienverkäufe am Markt überarbeitet und die Menge der Stammaktien, die es über H.C. Wainwright & Co. anbieten und verkaufen darf, auf $75.000.000 im Rahmen seiner bestehenden ATM-Vereinbarung erhöht, nach Wirksamwerdung dieses Prospektzusatzes.
Verkäufe können, falls vorhanden, als „at-the-market“-Angebote auf der NYSE American oder anderen US-Handelsmärkten erfolgen, an oder durch Market Maker, direkt an den als Principal agierenden Verkaufsagenten, in verhandelten Transaktionen zu geltenden Marktpreisen oder Preisen, die ihnen nahe stehen, und durch andere von Gesetz erlaubt Methoden. Der Verkaufsagent wird angemessene kommerzielle Anstrengungen unternehmen und ist nicht verpflichtet, eine bestimmte Menge zu verkaufen, und es gibt kein Treuhandabkommen.
Dieser Betrag schließt ca. 55 Millionen Aktien aus, die zum Supplement-Datum bereits unter dem ATM verkauft wurden. Die Stammaktien von WWR werden an der NYSE American unter dem Symbol „WWR“ gehandelt, und der zuletzt berichtete Verkaufspreis betrug 2,10 $ am 16. Oktober 2025.
WWR عدّلت برنامجها لأسهم السوق المفتوح، زادت كمية الأسهم العادية التي يمكنها عرضها وبيعها من خلال H.C. Wainwright & Co. إلى $75,000,000 وفقاً لاتفاق ATM القائم، بعد سريان مفعول ملحق هذا النشرة.
قد تتم المبيعات، إن وجدت، كعروض “في السوق” في NYSE American أو أسواق تداول أمريكية أخرى، إلى أو من خلال صانعي السوق، مباشرة إلى وكيل البيع الذي يعمل كونه وكيلًا رئيسيًا، في معاملات تفاوضية عند أسعار السوق السائدة أو أسعار ذات صلة بها، وبطرق أخرى يسمح بها القانون. سيبذل وكيل البيع جهوده التجارية معقولة وليس ملزمًا ببيع كمية محددة، ولا توجد ترتيبات إيصال أمانة.
هذه القيمة لا تشمل نحو 55 مليون سهم تم بيعها سابقًا بموجب ATM حتى تاريخ الملحق. أسهم WWR العادية يتم تداولها في NYSE American تحت الرمز “WWR”، وآخر سعر بيع مُبلغ كان $2.10 في 16 أكتوبر 2025.
WWR 已修改其在市场中的股票计划，在现有 ATM 协议下，通过 H.C. Wainwright & Co. 提供和出售的普通股数量增加至 $75,000,000，自本招股说明书增刊生效之日起。
如有销售，可能以“市场内”方式在 NYSE American 或其他美国交易市场进行，向市场做市商、直接向作为主承销的销售代理、在经协商的交易中按现行市场价格或相关价格进行，及通过法律允许的其他方式。销售代理将尽商业上合理的努力，但没有义务出售任何特定数量，也不存在托管安排。
该金额 不包括截至增刊日期以往在 ATM 下已经出售的大约 5500 万股。WWR 的普通股在 NYSE American 以“WWR”交易，最近的成交价为 $2.10，日期为 2025 年 10 月 16 日。
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Insights
Administrative update: expands ATM capacity to $75M.
The filing raises the ceiling on the company’s existing at-the-market program to
Execution is on a commercially reasonable efforts basis, with no obligation to sell any minimum amount and no escrow. Proceeds, when shares are sold, would go to the issuer; the excerpt notes about
Actual impact depends on issuance activity and market conditions. Subsequent disclosures will reflect any shares sold and proceeds realized under the updated limit.
WWR ha modificato il suo programma di offerte azionarie sul mercato, aumentando la quantità di azioni ordinarie che può offrire e vendere tramite H.C. Wainwright & Co. a $75,000,000 ai sensi del suo attuale Accordo ATM, dopo l'efficacia di questo supplemento al prospetto.
Le vendite, se presenti, possono essere effettuate come offerte sul mercato su NYSE American o altri mercati di negoziazione statunitensi, a o tramite market maker, direttamente all'agente di vendita che agisce come principale, in transazioni negoziate ai prezzi di mercato correnti o a prezzi correlati, e mediante altri metodi consentiti dalla legge. L'agente di vendita farà sforzi commercialmente ragionevoli e non è obbligato a vendere una quantità specifica, e non vi è alcun accordo di deposito.
Questa somma esclude circa 55 milioni di azioni precedentemente vendute sotto l'ATM alla data del supplemento. Le azioni ordinarie di WWR sono negoziate su NYSE American con il simbolo “WWR”, e l'ultimo prezzo di vendita riportato è stato $2.10 il 16 ottobre 2025.
WWR modificó su programa de acciones en el mercado, aumentando la cantidad de acciones comunes que puede ofrecer y vender a través de H.C. Wainwright & Co. a $75,000,000 conforme a su Acuerdo ATM existente, tras la entrada en vigor de este suplemento de folleto.
Las ventas, si las hubiera, pueden realizarse como ofertas “en el mercado” en NYSE American u otros mercados estadounidenses, a través de creadores de mercado, directamente al agente de ventas que actúa como principal, en transacciones negociadas a precios de mercado vigentes o a precios relacionados con ellos, y por otros métodos permitidos por la ley. El agente de ventas hará esfuerzos comercialmente razonables y no está obligado a vender una cantidad específica, y no hay ningún acuerdo de custodia.
Esta cantidad excluye aproximadamente 55 millones de acciones vendidas previamente bajo el ATM a la fecha del suplemento. Las acciones ordinarias de WWR cotizan en NYSE American bajo el símbolo “WWR”, y el último precio de venta reportado fue de $2.10 el 16 de octubre de 2025.
WWR은 ATM 계약하에 H.C. Wainwright & Co.를 통해 제공하고 매도할 수 있는 보통주 금액을 기존 ATM 계약 하에서 $75,000,000으로 증가시키며 시장에서의 공모를 개정했다. 이 증권설명 보충서의 발효 이후.
매각은 주식시장인 NYSE American 또는 미국 내 다른 거래 시장에서, 시장조성자와의 거래를 통해, 또는 매수대리인이 주도하는 직접 거래, 협상된 거래에서 현 시세 또는 그것과 관련된 가격으로 체결될 수 있으며, 법에서 허용하는 다른 방법으로도 가능하다. 매도 대리인은 상업적으로 합리적인 노력을 사용할 것이며 특정 금액을 팔아야 할 의무는 없으며 에스크로 계약은 없다.
이 금액은 약 5,500만 주의 주식을 보충일 기준으로 ATM 하에 이미 매도한 것을 제외한다. WWR의 보통주는 NYSE American에서 “WWR”로 거래되며, 마지막으로 보고된 매도가는 2025년 10월 16일 2.10달러였다.
WWR a modifié son programme d’actions ordinaires sur le marché, augmentant le montant d’actions ordinaires qu’elle peut offrir et vendre par l’intermédiaire de H.C. Wainwright & Co. à 75 000 000 $ dans le cadre de son accord ATM existant, après l’entrée en vigueur de ce supplément de prospectus.
Les ventes, le cas échéant, peuvent être effectuées en tant qu’offres « sur le marché » sur le NYSE American ou d’autres marchés américains, à travers des teneurs de marché, directement à l’agent de vente agissant comme preneur principal, dans des transactions négociées à des prix du marché en vigueur ou à des prix qui y sont liés, et par d’autres méthodes autorisées par la loi. L’agent de vente déploiera des efforts raisonnables sur le plan commercial et n’est pas obligé de vendre une quantité précise, et il n’y a pas d’accord de séquestre.
Cette somme exclut environ 55 millions d’actions déjà vendues sous l’ATM à la date du supplément. Les actions ordinaires de WWR se négocient sur le NYSE American sous le symbole « WWR », et le dernier prix de vente annoncé était de 2,10 $ le 16 octobre 2025.
WWR hat sein Programm für Aktienverkäufe am Markt überarbeitet und die Menge der Stammaktien, die es über H.C. Wainwright & Co. anbieten und verkaufen darf, auf $75.000.000 im Rahmen seiner bestehenden ATM-Vereinbarung erhöht, nach Wirksamwerdung dieses Prospektzusatzes.
Verkäufe können, falls vorhanden, als „at-the-market“-Angebote auf der NYSE American oder anderen US-Handelsmärkten erfolgen, an oder durch Market Maker, direkt an den als Principal agierenden Verkaufsagenten, in verhandelten Transaktionen zu geltenden Marktpreisen oder Preisen, die ihnen nahe stehen, und durch andere von Gesetz erlaubt Methoden. Der Verkaufsagent wird angemessene kommerzielle Anstrengungen unternehmen und ist nicht verpflichtet, eine bestimmte Menge zu verkaufen, und es gibt kein Treuhandabkommen.
Dieser Betrag schließt ca. 55 Millionen Aktien aus, die zum Supplement-Datum bereits unter dem ATM verkauft wurden. Die Stammaktien von WWR werden an der NYSE American unter dem Symbol „WWR“ gehandelt, und der zuletzt berichtete Verkaufspreis betrug 2,10 $ am 16. Oktober 2025.
Filed pursuant to Rule 424(b)(5)
Registration No. 333-280685
PROSPECTUS SUPPLEMENT
(To prospectus dated August 29, 2024 and
prospectus supplements dated August 30, 2024 and March 21, 2025)
Up to $75,000,000
Common Stock
This prospectus supplement (this “Prospectus Supplement”) amends and supplements the prospectus supplement dated August 30, 2024, and the prospectus supplement dated March 21, 2025 (together, the “ATM Prospectus”). This Prospectus Supplement should be read in conjunction with the ATM Prospectus and the accompanying base prospectus dated August 29, 2025, filed with the Securities and Exchange Commission as a part of our registration statement on Form S-3 (File No. 333-280685) (the “Registration Statement”), relating to the offer and sale of shares of our common stock from time to time pursuant to the terms of the At the Market Offering Agreement dated as of August 30, 2024 (the “ATM Agreement”) with H.C. Wainwright & Co., LLC (the “Sales Agent”), acting as sales agent or principal. This Prospectus Supplement is qualified by reference to the ATM Prospectus, except to the extent that the information herein amends or supersedes the information contained in the ATM Prospectus. This Prospectus Supplement is not complete without and may only be delivered or utilized in connection with the ATM Prospectus, and any future amendments or supplements thereto.
We are filing this Prospectus Supplement to amend the ATM Prospectus to increase the amount of shares of our common stock, $0.001 par value per share that we may offer and sell through the Sales Agent pursuant to the ATM Agreement to $75,000,000, which does not include the approximately $55 million of shares that were previously sold pursuant to the ATM Agreement as of the date of this Prospectus Supplement.
Sales of common stock, if any, under this Prospectus Supplement and the ATM Prospectus may be made in transactions that are deemed to be “at-the-market” offerings as defined in Rule 415 under the Securities Act of 1933, as amended (the “Securities Act”), including sales made directly on or through NYSE American Stock Exchange ( “NYSE American”), the existing trading market for our common stock, or any other existing trading market in the Unites States for our common stock, sales made to or through a market maker other than on an exchange or otherwise, directly to the Sales Agent as principal, in negotiated transactions at market prices prevailing at the time of sale or at prices related to such prevailing market prices, and/or in any other method permitted by law. The Sales Agent is not required to sell any specific number or dollar amount of shares, but will act as sales agent on a commercially reasonable efforts basis consistent with its normal trading and sales practices. There is no arrangement for funds to be received in any escrow, trust or similar arrangement.
Our common stock is listed on NYSE American under the symbol “WWR.” On October 16, 2025, the last reported sale price of our common stock on the NYSE American was $2.10 per share.
Investing in our common stock involves a high degree of risk. Please read “Risk Factors” beginning on page S-6 of the ATM Prospectus, as well as the risks set forth in our most recent Annual Report on Form 10-K and the other reports we file with the Securities and Exchange Commission pursuant to the Securities Exchange Act of 1934, as amended, which are incorporated by reference into this prospectus supplement and the ATM Prospectus, for a discussion of certain risks that should be considered in connection with an investment in our common stock.
Neither the Securities and Exchange Commission nor any state securities commission has approved or disapproved of these securities or passed upon the adequacy or accuracy of the ATM Prospectus, this prospectus supplement or the accompanying base prospectus. Any representation to the contrary is a criminal offense.
H.C. Wainwright & Co.
The date of this prospectus supplement is October 17, 2025.
FAQ
What did WWR change in its 424B5 supplement?
Is the WWR offering primary or resale?
How much has WWR already sold under the ATM?
Where can WWR shares be sold under the ATM?
Is the sales agent obligated to sell a set amount for WWR?
What was WWR’s last reported share price?
Are funds from WWR’s ATM held in escrow?
