Americas Gold and Silver Reports High-Grade 149 Vein Extension Including 24,913 g/t Silver and 16.9% Copper at Galena Complex and Effective Date of Share Consolidation

TORONTO, ONTARIO – August 22, 2025 – Americas Gold and Silver Corpora�on (TSX: USA) (NYSE American: USAS) (“Americas” or the “Company”), a growing North American precious metals producer, is pleased to announce strong explora�on results at the Galena Complex, highligh�ng the iden�fica�on of a high-grade upper extension of the 149 Vein.

The Company is also pleased to report that its previously announced share consolida�on has been effected and trading on a post-consolida�on basis is expected to occur star�ng with the open of trading on August 26, 2025, on the basis of one (1) post-consolida�on common share of the Company (“Common Share”) for every two and a half (2.5) pre-consolida�on Common Shares (the "Consolida�on").

Paul Andre Huet, Chairman and CEO, commented: “The iden�fica�on of this high-grade copper-silver-an�mony extension to the 149 Vein is an exci�ng development that builds on our ongoing success in unlocking addi�onal value at the Galena Complex. With some extraordinary intercepts, including 24,913 grams per ton silver over 0.21 metres, and nearly 120 meters of ver�cal con�nuity demonstrated above the current mining level and excep�onal grades in the intercepts, this extension posi�ons us to poten�ally expand produc�on from an already high- performing vein. It aligns with our targeted explora�on strategy to enhance mill feed quality and opera�onal efficiency, suppor�ng our goals of increasing output and shareholder value.

We are also pleased with the comple�on of the share consolida�on, which represents a strategic move to strengthen our capital structure. By reducing the number of outstanding shares, the consolida�on maintains shareholder value and opens the doors to ins�tu�onal investors with minimum price thresholds. It also poten�ally unlocks access to margin accounts at certain brokerages. Our leadership team successfully executed a 4.5-to-1 consolida�on at Karora Resources in 2020, which saw the daily trading value triple over four years, demonstra�ng our experience with such ini�a�ves, though past performance is not indica�ve of future results. This consolida�on posi�ons Americas for future growth as we con�nue to advance our high-poten�al assets.”

High-grade Extension of 149 Vein Uncovered by Explora�on Drilling at Galena Complex, Highlighted by 24,913 g/t Ag and 16.9% Cu Over 0.21 Meters

Recent early-stage explora�on drilling on the 4300 Level from the 43-191 DDS at the Galena Mine has iden�fied a high-grade copper-silver-an�mony vein believed to be the upper extension of the previously iden�fied 149 Vein. The three holes drilled to date demonstrate nearly 120 meters of ver�cal con�nuity above current mining level with more drilling in progress to infill and extend this vein. The 149 Vein is currently being mined below these intercepts, producing a consistent high-grade mill feed of 600-700 tons per cut that average 700-950 silver grams per ton and 0.6-0.7% copper. The 149 Vein is a strong candidate currently under review for long hole open stoping.

The geologic se�ng and host rock interpreta�on indicates that recent intercepts are near the upper crown of the 149 Vein. This area is located within the transi�on zone of the Upper Reve� and the St. Regis Forma�ons, the two dominant Belt Supergroup forma�ons seen at the Galena Mine. To date, 4,878 meters have been drilled from this sta�on out of a planned 18,100 meters, tes�ng several different targets in addi�on to the 149 Vein.

Figure 1 – Plan view of the 4900 Level showing the 149 Vein in rela�on to the No. 3 and Galena Sha�s

Drill results on the 149 vein to-date are:

• DDH 43-317: 24,913 g/t Ag and 16.9% Cu over 0.21 meters
• DDH 43-304: 2,816 g/t Ag, 2.0% Cu and 1.05% Sb over 1.05 meters
• DDH 43-316: 2,354 g/t Ag and 1.7% Cu over 1.58 meters

An�mony (Sb) results are currently pending on holes 43-316 and 43-317.

Figure 2 – Cross sec�on view showing the ac�ve produc�on area on the 149 Vein and new drill intercepts

These intercepts underscore the high-grade nature of the 149 Vein extension, with poten�al to contribute to nearterm mining plans and further resource delinea�on as addi�onal drilling progresses. The vein remains open for expansion, and ongoing efforts will focus on infilling and tes�ng adjacent targets to maximize its contribu�on to the Galena Complex's produc�on profile.

A full table of drill results can be found at:

h�ps://americas-gold.com/site/assets/files/4297/dr20250822.pdf

Share Consolida�on

Further to the announcement included in its news release dated August 11, 2025, the Company has filed ar�cles of amendment, effec�ve August 21, 2025, to effect the previously announced Consolida�on on the basis of one

(1) post-consolida�on Common Share for every two and a half (2.5) pre-consolida�on Common Shares. The Common Shares are expected to commence trading under their exis�ng symbols on the Toronto Stock Exchange and on the NYSE American on a post-Consolida�on basis on the opening of trading on Tuesday August 26, 2025.

The Consolida�on reduced the number of Common Shares issued and outstanding from approximately 679,357,056 to approximately 271,742,692. As a result of the Consolida�on, shares issuable pursuant to the Company’s outstanding stock op�ons, warrants, restricted share units, performance share units and other conver�ble securi�es will be propor�onally adjusted on the same basis.

For addi�onal informa�on regarding the Consolida�on, please refer to the Company’s No�ce of Annual and Special Mee�ng of Shareholders and Management Informa�on Circular dated May 15, 2025, which are available on SEDAR+ at www.sedarplus.ca or EDGAR at www.sec.gov.

Most shareholders of the Company are “non-registered” shareholders because the Common Shares they own are not registered in their names but are instead registered in the name of the brokerage firm, bank or trust company through which they purchased the Common Shares. Non-registered shareholders are not required to take any ac�on with respect to their Common Shares as a result of the Consolida�on, but should contact their intermediaries if they have ques�ons regarding how their Common Shares will be processed in connec�on with the Consolida�on.

Computershare Investor Services Inc. (“Computershare”), the Company’s transfer agent, is mailing le�ers of transmi�al to the Company’s registered shareholders holding share cer�ficates providing instruc�ons on exchanging share cer�ficates represen�ng pre-Consolida�on Common Shares for share cer�ficates represen�ng post-Consolida�on Common Shares. Registered shareholders holding pre-Consolida�on Common Shares through the Direct Registra�on System (“DRS”) will be automa�cally sent a DRS advice by Computershare, represen�ng the number of post-Consolida�on Common Shares they hold following the Consolida�on and no further ac�on is required to be taken.

The new CUSIP of the Common Shares is 03062D803 (ISIN: CA03062D8035).

About Americas Gold and Silver Corpora�on

Americas Gold & Silver is a growing precious metals mining company with mul�ple assets in North America. In December 2024, Americas increased its ownership in the Galena Complex (Idaho, USA) from 60% to 100% in a transac�on with Eric Spro�, solidifying its posi�on as a silver-focused producer. Americas also owns and operates the Cosalá Opera�ons in Sinaloa, Mexico. Eric Spro� is the Company’s largest shareholder, holding an approximate 20% interest. Americas has a proven and experienced management team led by Paul Huet, is fully funded to execute its growth plans, and focused on becoming one of the top North American silver plays, with an objec�ve of over 80% of its revenue to be generated from silver by the end of 2025.

For more informa�on:

Maxim Kouxenko - Manager, Investor Rela�ons

M: +1 (647) 888-6458 E: [email protected] W: Americas-gold.com

Technical Informa�on and Qualified Persons

The scien�fic and technical informa�on rela�ng to the Company’s material mining proper�es contained herein has been reviewed and approved by Rick Streiff, Execu�ve Vice President – Geology of the Company. Mr. Streiff is a “qualified person” for the purposes of NI 43-101. The Company’s current Annual Informa�on Form and the NI 43- 101 Technical Reports for its mineral proper�es, all of which are available on SEDAR+ at www.sedarplus.ca, and EDGAR at www.sec.gov, contain further details regarding mineral reserve and mineral resource es�mates, classifica�on and repor�ng parameters, key assump�ons and associated risks for each of the Company’s material mineral proper�es, including a breakdown by category.

All mining terms used herein have the meanings set forth in Na�onal Instrument 43-101 – Standards of Disclosure for Mineral Projects (“NI 43-101”), as required by Canadian securi�es regulatory authori�es. These standards differ from the requirements of the SEC that are applicable to domes�c United States repor�ng companies. Any mineral reserves and mineral resources reported by the Company in accordance with NI 43-101 may not qualify as such under-SEC standards. Accordingly, informa�on contained in this news release may not be comparable to similar informa�on made public by companies subject to the SEC’s repor�ng and disclosure requirements.

Cau�onary Statement on Forward-Looking Informa�on:

This news release contains “forward-looking informa�on” within the meaning of applicable securi�es laws. Forward-looking informa�on includes, but is not limited to, Americas’ expecta�ons, inten�ons, plans, assump�ons, and beliefs with respect to, among other things, the commencement of trading of the Common Shares on the TSX and the NYSE American on a post-Consolida�on basis, , the poten�al for further ins�tu�onal investor interest in the Company, the poten�al incorpora�on of the 149 Vein extension into mine plans at the Galena Complex, and the ability to expand produc�on at the vein, the es�mated con�nuity of the 149 Vein, and the an�cipated �ming and results of ongoing and planned explora�on drilling at the Galena Complex, statements about the Company’s explora�on strategy, enhancement mill feed quality and opera�onal efficiency, and an�cipated ability to increase shareholder value and are subject to the risks and uncertain�es outlined below. O�en, but not always, forward-looking informa�on can be iden�fied by forward-looking words such as “an�cipate,” “believe,” “expect,” “goal,” “plan,” “intend,” “poten�al,” “es�mate,” “may,” “assume,” and “will” or similar words sugges�ng future outcomes, or other expecta�ons, beliefs, plans, objec�ves, assump�ons, inten�ons, or statements about future events or performance. Forward-looking informa�on is based on the opinions and es�mates of Americas as of the date such informa�on is provided and is subject to known and unknown risks, uncertain�es, and other factors that may cause the actual results, level of ac�vity, performance, or achievements of Americas to be materially different from those expressed or implied by such forward-looking informa�on. These risks and uncertain�es include, but are not limited to the risk factors rela�ng to the Company found under the heading “Risk Factors” in the Company’s Annual Informa�on Form dated March 31, 2025 or the Company’s MD&A for the three and six months ended June 30, 2025 dated August 11, 2025; interpreta�ons or reinterpreta�ons of geologic informa�on; unfavorable explora�on results; inability to obtain permits required for future explora�on, development, or produc�on; general economic condi�ons and condi�ons affec�ng the mining industry; the uncertainty of regulatory requirements and approvals; poten�al li�ga�on; fluctua�ng mineral and commodity prices; the ability to obtain necessary future financing on acceptable terms or at all; risks associated with the mining industry generally, such as economic factors (including future commodity prices, currency fluctua�ons, and energy prices), ground condi�ons, failure of plant, equipment, processes, and transporta�on services to operate as an�cipated, environmental risks, government regula�on, actual results of current explora�on and produc�on ac�vi�es, possible varia�ons in grade or recovery rates, permi�ng �melines, capital expenditures, reclama�on ac�vi�es, labor rela�ons; and risks related to changing global economic condi�ons and market vola�lity. Although the Company has a�empted to iden�fy important factors that could cause actual results to differ materially from those contained in forward-looking informa�on, there may be other factors that cause results not to be as an�cipated, es�mated, or intended. Readers are cau�oned not to place undue reliance on such informa�on. Addi�onal informa�on regarding the factors that may cause actual results to differ materially from this forward-looking informa�on is available in Americas’ filings with the Canadian Securi�es Administrators on SEDAR+ and with the SEC. Americas does not undertake any obliga�on to update publicly or otherwise revise any forward-looking informa�on whether as a result of new informa�on, future events, or other such factors which affect this informa�on, except as required by law. Americas does not give any assurance (1) that Americas will achieve its expecta�ons, or (2) concerning the result or �ming thereof. All subsequent wri�en and oral forwardlooking informa�on concerning Americas are expressly qualified in their en�rety by the cau�onary statements above.