Cascada Silver Corp. To Become ATERRA Metals Inc

Rhea-AI Summary

ATERRA Metals (formerly Cascada Silver Corp., OTCQB: CSSCF, CSE: CSS) changed its name to ATERRA Metals Inc. and will begin trading under the symbol ATC at market open on December 16, 2025. The company is finalizing binding option agreements to acquire three advanced copper-gold porphyry properties in Region III, Chile, ~60 km south of Vallenar.

Key technical highlights include a Frontera historical estimate of 16 Mt indicated @ 0.66% CuEq and 34 Mt inferred @ 0.64% CuEq; other drill intercepts reported at Taruca and Clinton.

Positive

• Trading symbol change to ATC effective Dec 16, 2025
• Frontera historical estimate: 16 Mt indicated @ 0.66% CuEq
• Frontera historical estimate: 34 Mt inferred @ 0.64% CuEq

Negative

• Historical results not independently verified by the company
• Qualified Person for Chile activities is not independent
• Acquisition option agreements are still being finalized

Key Figures

Frontera indicated resource 16 Mt @ 0.66% CuEq (0.38% Cu & 0.22 g/t Au) Historical mineral resource estimate at Frontera Property

Frontera inferred resource 34 Mt @ 0.64% CuEq (0.36% Cu & 0.22 g/t Au) Historical mineral resource estimate at Frontera Property

Taruca drill interval 142 m @ 0.69% CuEq (0.47% Cu & 0.17 g/t Au) Historical drilling highlight, hole DDHTP-02, Taruca Property

Taruca drill interval 114 m @ 0.61% CuEq (0.23% Cu & 0.31 g/t Au) Historical drilling highlight, hole DDHTO-07, Taruca Property

Clinton drill interval 166 m @ 0.62% CuEq (0.23% Cu & 0.31% Au) Historical drilling highlight, hole RCCL-01, Clinton Property

Clinton drill interval 278 m @ 0.61% CuEq (0.23% Cu & 0.30 g/t Au) Historical drilling highlight, hole DDHCL-06, Clinton Property

Copper price assumption $4.00 per pound Input used in CuEq grade calculation

Gold price assumption $3,500 per ounce ($112.53 per gram) Input used in CuEq grade calculation

Market Reality Check

$0.0146 Last Close

Volume Volume 1,000 vs 20-day average 176,324 (relative volume 0.01x) indicates very thin trading ahead of this news. low

Technical Price 0.01386 is trading below the 200-day MA of 0.02, indicating a weak longer-term trend pre-announcement.

Peers on Argus

No peer stocks or sector momentum data were flagged, suggesting the pre-news move in CSSCF was stock-specific rather than driven by a broader sector trend.

Historical Context

Date	Event	Sentiment	Move	Catalyst
Nov 20	Property acquisition	Positive	-30.5%	MOUs to acquire three advanced copper-gold porphyry properties in Chile.

Pattern Detected

Limited history, but the prior acquisition announcement with Chile copper-gold properties saw a sharply negative price reaction despite expansion-focused news.

Recent Company History

On Nov 20, 2025, Cascada announced non-binding MOUs to acquire three advanced copper-gold porphyry properties in Chile, including historic resources at Frontera and significant prior drilling at Clinton and Taruca. That expansion-focused news led to a -30.51% 24-hour price reaction. Today’s name change to ATERRA Metals and reiteration of those properties continues the thematic pivot toward Chilean copper-gold exploration and development.

Market Pulse Summary

The stock surged +16.6% in the session following this news. A strong positive reaction aligns with a clear strategic pivot: the company rebranded to ATERRA Metals to emphasize copper and gold exploration while reiterating advanced-stage Chilean properties with historical resources and drilling. However, prior expansion news on Nov 20, 2025 saw a -30.51% move, showing that enthusiasm has not always translated into support. Thin liquidity, as seen with volume of 1,000 shares pre-announcement, could also amplify swings.

Key Terms

copper equivalent technical

"Frontera Property deposit historical mineral resource estimate:− 16 Mt indicated grading 0.66% copper equivalent"

Copper equivalent is a single, standardized number that converts the value of all metals in a mineral deposit into the equivalent amount of copper, using current metal prices and processing recoveries. Think of it as putting different coins into one currency so you can compare the total worth at a glance; investors use it to assess and compare the economic attractiveness of mining projects and expected revenue per unit of ore.

CuEq technical

"CuEq grades were calculated using a copper price of $4.00 per pound"

CuEq (copper equivalent) converts the value of multiple metals in a mineral deposit into the amount of copper that would have the same value, producing a single, comparable grade number. For investors it acts like converting different currencies into one money — simplifying comparison of deposits and potential revenue, but its accuracy depends on the metal prices, recovery rates and cost assumptions used to make the conversion, so detailed reports are still needed.

JORC Code regulatory

"under "Australasian Code for Reporting on Exploration Results, Mineral Resources and Ore Reserves" (The JORC Code, 2012 Edition)"

The JORC Code is a professional standard for reporting mineral exploration results, mineral resources, and ore reserves so that geological and economic statements about a mining project are transparent and consistent. Think of it as an independent checklist and labeling system that requires qualified experts to document how estimates were made, making company claims verifiable and comparable. Investors use JORC-compliant reports to assess how reliable a mine’s reported size and potential value are before committing funds.

National Instrument 43-101 regulatory

"as such term is defined in National Instrument 43-101 - Standards of Disclosure for Mineral Projects"

National Instrument 43-101 is a set of rules and guidelines that govern how mineral exploration and mining companies must report information about their projects. It ensures that the details shared with investors are accurate, consistent, and reliable—similar to how a detailed, verified blueprint ensures a building’s safety. This helps investors make informed decisions based on trustworthy information about a company's mineral resources.

mineral resource estimate technical

"in the case of the Frontera Property, preparation of a historical resource estimate."

A mineral resource estimate is a calculated approximation of how much metal or mineral material likely exists in a particular deposit and where it sits underground, similar to estimating how many cookies are in a jar by peeking at the layers. It matters to investors because it provides a data-based starting point for judging a project's potential value, future production and risks, while not guaranteeing recoverable or profitable amounts.

cutoff grade technical

"The mineral estimate was based upon a cutoff grade of 0.25% Cu."

Cutoff grade is the minimum concentration of a valuable mineral in rock that makes it economical to extract; material below that level is treated as waste. It matters to investors because it determines how much of a resource is classified as a mineable reserve, directly affecting projected production, mine life, costs and profitability — imagine only picking fruit from a tree once it’s ripe enough to sell.

AI-generated analysis. Not financial advice.

Toronto, Ontario--(Newsfile Corp. - December 11, 2025) - Cascada Silver Corp. (CSE: CSS) (OTCQB: CSSCF) ("Cascada" or the "Company") is pleased to announce that it has changed its name to ATERRA Metals Inc. ("ATERRA") to better reflect the Company's focus on copper and gold exploration and development. Cascada recently announced its intention to acquire three advanced copper-gold porphyry properties (the "Properties") in Chile and final binding option agreements on each of the Properties are being finalized.

The common shares of the Company will commence trading with the name "ATERRA Metals Inc." under the trading symbol "ATC" at the beginning of trading on December 16, 2025. The board of directors passed a resolution approving the name change in accordance with the Articles of the Company. The OTCQB symbol will be updated in due course.

Commenting on the new name, Carl Hansen, CEO noted, "The name ATERRA Metals is inspired by the potential of Atacama's mineral-rich terrain. It reflects management's exceptional discovery record in Chile's Atacama Region-one of the world's most productive mining areas. For more than three decades, our team has consistently demonstrated a proven ability to identify and advance high-value mineral deposits. This experience and sustained success underpins our strategy for generating meaningful shareholder value as we finalize the recently announced acquisitions of three advanced-stage copper-gold properties."

On November 20, 2025, Cascada announced that it had signed memoranda of understanding to acquire three advanced copper-gold porphyry properties in Region III, Chile, approximately 60 kilometres south of Vallenar. The Properties have been subject to significant historical exploration activities including drilling and, in the case of the Frontera Property, preparation of a historical resource estimate. Highlights from the Properties included:

• Frontera Property deposit historical mineral resource estimate:

− 16 Mt indicated grading 0.66% copper equivalent ("CuEq") (0.38% Cu & 0.22 g/t Au)

− 34 Mt inferred grading 0.64% CuEq (0.36% Cu & 0.22 g/t Au)

• Taruca Property (Totora Target) historical drilling highlights include:

− 142 m grading 0.69% CuEq (0.47% Cu & 0.17 g/t Au), hole DDHTP-02

− 114 m grading 0.61% CuEq (0.23% Cu & 0.31 g/t Au), hole DDHTO-07

• Clinton Property historical drilling highlights include:

− 166 m grading 0.62% CuEq (0.23% Cu & 0.31 g/t Au), hole RCCL-01

− 278 m grading 0.61% CuEq (0.23% Cu & 0.30 g/t Au), hole DDHCL-06

Copper Equivalent Calculation: CuEq grades were calculated using a copper price of $4.00 per pound and a gold price of $3,500 per ounce ($112.53 per gram). CuEq grades are calculated as follows: CuEq = (((Au grade * 112.53) / 4.00 / 2,204.6)) * 100 + Cu grade. No recovery factors are used in this calculation. Metal prices are in US$.

Note that Cascada has not undertaken any independent investigation of the historical results from the Properties nor has it verified the underlying technical basis for the historical mineral resource and drill results. The reader is cautioned against relying on the accuracy or reliability of the historical results presented; however, Cascada considers historical results relevant as those results will be used as a guide to plan future exploration programs. The Company considers the data to be reliable for those purposes only and not indicative of the nature of any actual mineral resource.

The Frontera Property historical resource was prepared by Hot Chile Limited under "Australasian Code for Reporting on Exploration Results, Mineral Resources and Ore Reserves" (The JORC Code, 2012 Edition) and published on March 11, 2014. The mineral estimate was based upon a cutoff grade of 0.25% Cu. A qualified person, as such term is defined in National Instrument 43-101 - Standards of Disclosure for Mineral Projects ("NI 43-101") of the Canadian Securities Administrators, has not undertaken sufficient work to classify the foregoing historical estimate as a current mineral resource and Cascada is not treating the historical estimate as a current mineral resource.

NI 43-101 Disclosure

As defined by NI 43-101, the Qualified Person for Cascada's exploration activities in Chile is Francisco Bravo, a resident of Santiago, Chile. He is not considered independent as defined by NI 43-101. Mr. Bravo is a Public Registered Person for Reserves and Resources N° 515, in Chile, and is also registered in the Colegio de Geólogos de Chile under N° 725. Mr. Bravo has reviewed and approved the technical information in this release.

About the Company

Cascada is a mineral exploration company focused on exploration opportunities in Chile. Cascada's team of successful exploration professionals isdedicated to the discovery of mineral deposits that can be progressed into economically viable development projects creating value for all stakeholders.

On behalf of Cascada Silver Corp.,

Carl Hansen, CEO
Phone: 416-953-0258

For additional information, please contact us at: ir@cascadasilver.com.

CAUTIONARY NOTE REGARDING FORWARD-LOOKING STATEMENTS

This news release contains forward-looking statements, including predictions, projections and forecasts. Forward-looking statements include, but are not limited to: plans for the evaluation of exploration properties; the success of evaluation plans; the success of exploration activities; mine development prospects; and, potential for future metals production. Often, but not always, forward-looking statements can be identified by the use of words such as "plans", "planning", "expects" or "does not expect", "focus is to", "continues", "scheduled", "estimates", "forecasts", "objectives", "intends", "potential", "anticipates", "does not anticipate", or describes a "goal", or variation of such words and phrases or state that certain actions, events or results "may", "could", "would", "might", or "will" be taken, occur or be achieved.

Forward-looking statements involve known and unknown risks, future events, conditions, uncertainties and other factors which may cause the actual results, performance or achievements to be materially different from any future results, predictions, projections, forecasts, performances or achievements expressed or implied by the forward-looking statements. Such factors include, among others: the timing and approval of the proposed name and symbol change; the successful entering into option agreements for the Properties; the successful acquisition of exploration projects; changes in economic parameters and assumptions; all aspects related to the timing of exploration activities and receipt of exploration results; the interpretation and actual results of current exploration activities; changes in project or exploration parameters as plans continue to be refined; the results of regulatory and permitting processes; future metals prices; possible variations in grade or recovery rates; failure of equipment or processes to operate as anticipated; labour disputes and other risks of the mining industry; the results of economic and technical studies; delays in obtaining governmental approvals, financing or in the completion of exploration; as well as those factors disclosed in Cascada's publicly filed documents.

Although Cascada has attempted to identify important factors that could cause actual actions, events or results to differ materially from those described in forward-looking statements, there may be other factors that cause actions, events or results not to be as anticipated, estimated or intended. There can be no assurance that forward-looking statements will prove to be accurate, as actual results and future events could differ materially from those anticipated in such statements. Accordingly, readers should not place undue reliance on forward-looking statements.

Neither the Canadian Securities Exchange nor its regulation services provider has reviewed or accepts responsibility for the adequacy or accuracy of the content of this news release.

To view the source version of this press release, please visit https://www.newsfilecorp.com/release/277738

FAQ

When will Cascada Silver start trading as ATERRA Metals (ATC)?

Common shares will begin trading under ATC at the start of trading on December 16, 2025.

What copper-gold assets is ATERRA acquiring in Chile (CSSCF)?

ATERRA is finalizing option agreements to acquire three advanced copper-gold porphyry properties in Region III, Chile, ~60 km south of Vallenar.

What is the Frontera historical resource cited by ATERRA Metals?

Frontera historical estimate: 16 Mt indicated @ 0.66% CuEq and 34 Mt inferred @ 0.64% CuEq, using a 0.25% Cu cutoff in the historical report.

Are the historical resources for the Chile properties NI 43-101 compliant?

No; the company states the historical estimates have not been verified as current NI 43-101 resources.

Will the OTCQB ticker update immediately to ATC for CSSCF?

The release says the OTCQB symbol will be updated in due course, not immediately on December 16, 2025.

How did ATERRA calculate copper equivalent (CuEq) grades?

CuEq was calculated using $4.00/lb Cu and $3,500/oz Au ($112.53/gram) with no recovery factors applied.