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TROILUS UPSIZES DEBT FINANCING MANDATE FOR UP TO US$1.2 BILLION Expanded mandate strengthens foundation for majority of project funding, backed by leading global lenders and export credit agencies

Financings Debt & Credit Facilities

TROILUS UPSIZES DEBT FINANCING MANDATE FOR UP TO US$1.2 BILLION

Expanded mandate strengthens foundation for majority of project funding, backed by

leading global lenders and export credit agencies

May 5, 2026, Montreal, Quebec – Troilus Mining Corp. (TSX: TLG; OTCQX: CHXMF; FSE: CM5) (“Troilus”

or the “Company”) is pleased to announce that it has further increased its previously announced debt

financing mandate from up to US$1.0 billion to up to US$1.2 billion, reflecting continued strong lender

support and advancing progress toward a fully funded construction package for the Troilus copper-

gold project (the “Project”), located in north-central Québec, Canada.

The financing is being led by a syndicate of leading global financial institutions, including Societe

Generale, KfW IPEX-Bank, and Export Development Canada (“EDC”) (together, the “Mandated Lead

Arrangers” or “MLAs”), and is expected to form the cornerston e of the Project’s overall financing

structure.

The increased mandate underscores the strong alignment between Troilus and its lending partners,

supported by the Project’s scale, long-life production profile, and growing strategic importance as one

of North America’s next major copper-gold mines. The structure of the facility is expected to provide

a flexible, competitively priced source of capital, with meaningful support from export credit agency

partners.

Justin Reid, CEO of Troilus, commented, “The increase of up to US$1.2 billion marks a major milestone

as we advance the debt financing along with other components of the project financing package, to

position Troilus toward a fully funded construction decision. This expanded mandate reflects the

significant progress made by the Company through basic and into detailed engineering, which has

provided the lending syndicate with increased confidence as our execution plan becomes more clearly

defined. Troilus is also a uniquely flexible asset. We will produce doré on site, while also shipping a

precious metal rich copper concentrate to both international and domestic markets. That level of

optionality is a real strength of the Project as we move through the final gating items required to

advance to construction.”

Technical, financial, and environmental and social due diligence with the MLAs is well advanced and

progressing toward completion, with finalization of the debt financing package subject to credit

approvals, execution of definitive documentation, and satisfaction of conditions precedent

thereunder.

Auramet International Inc. continues to act as project finance advisor, supporting the Company in

structuring and executing a comprehensive financing solution to advance the Project toward

construction.

About Troilus Mining Corp.

Troilus Mining Corp. is a Canadian development-stage mining company focused on the responsible

advancement of the former gold and copper Troilus Mine towards near-term production. Troilus is located

in the tier-one mining jurisdiction of Quebec, Canada, where it holds a large land position of 435 km² in

the Frôtet-Evans Greenstone Belt. A Feasibility Study completed in May 2024 supports a large-scale 22-

year, 50ktpd open-pit mining operation, positioning it as a cornerstone project in North America.

For more information:

Caroline Arsenault

VP Corporate Communications

+1 (647) 276-0050

[email protected]

Cautionary Note Regarding Forward-Looking Statements and Information

This press release contains “forward- looking statements” within the meaning of applicable Canadian

securities legislation. Forward- looking statements include, but are not limited to, statements regarding

the impact of the increased mandate on the Company, the likelihood that binding funding commitments

will follow on the timeline projected or at all, the likelihood that E xport Credit Agencies will provide

financing and guarantees, advancing towards a fully funded construction package and construction

decision, development plans to advance the Troilus project towards construction, the impact of due

diligence on structuring a definitive project debt package, the likelihood of structuring a definitive project

debt package with financial close on stated timeline o r at all, structuring, identifying, and engaging

potential financing participants, development plans, opportunity to expand the scale of the project, the

project becoming a cornerstone mining project in Noth America; the development potential and timetable

of the project; Generally, forward- looking statements can be identified by the use of forward- looking

terminology such as “plans”, “expects” or “does not expect”, “is expected”, “budget”, “scheduled”,

“estimates”, “forecasts”, “intends”, “continue”, “anticipates” or “does not anticipate”, or “believes”, or

variations of such words and phrases or statements that certain actions, events or results “may”, “could”,

“would”, “will”, “might” or “will be taken”, “occur” or “be achieved”. Forward-looking statements are

made based upon certain assumptions and other important facts that, if untrue, could cause the actual

results, performances or achievements of Troilus to be materially different from future results,

performances or achievements expressed or implied by such statements. Such statements and information

are based on numerous assumptions regarding present and future business strategies and the

environment in which Troilus will operate in the future. Certain important factors that could cause actual

results, performances or achievements to differ materially from those in the forward- looking statements

include, amongst others, currency fluctuations, the global economic climate, dilution, share price volatility

and competition. Forward-looking statements are subject to known and unknown risks, uncertainties and

other important factors that may cause the actual results, level of activity, performance or achievements

of Troilus to be materially different from those expressed or implied by such forward- looking statements,

including but not limited to: associated with negotiating and structuring a definitive project debt package

and other components of the project financing on the stated timeline or at all; uncertainties related to

whether ECAs will provide financing and guarantees in support of companies within their respective

jurisdictions risks and uncertainties inherent to mineral resource and reserve estimates; the high degree of

uncertainties inherent to feasibility studies and other mining and economic studies which are based to a

significant extent on various assumptions at the time they were published; cost increases for building and

operating the Project; variations in gold prices and other metals, exchange rate fluctuations; variations in

cost of supplies and labour; receipt of necessary approvals; uncertainties and risks with respect to

developing mining projects; inflationary pressures ; uncertainties with respect to world events, including

the war in the Middle East and the effect on costs of supplies and commodit ies; general business,

economic, competitive, political and social uncertainties; future gold and other metal prices; accidents,

labour disputes and shortages; environmental and other risks of the mining industry, including without

limitation, risks and uncertainties discussed in the Company’s latest Annual Information Form, its technical

reports and other continuous disclosure documents of the Company available under the Company’s profile

at www.sedarplus.ca. Although Troilus has attempted to identify important factors that could cause actual

results to differ materially from those contained in forward-looking statements, there may be other factors

that cause results not to be as anticipated, estimated or intended. There can be no assurance that such

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. Troilus does not undertake to update any f orward-looking statements, except in accordance

with applicable securities laws.