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Sherritt Releases its 2024 Sustainability Reports

Corporate Updates

NOT FOR DISTRIBUTION TO UNITED STATES NEWSWIRE

SERVICES OR FOR DISSEMINATION IN THE UNITED STATES

Sherritt Releases its 2024 Sustainability Reports

TORONTO, August 7, 2025 – Sherritt International Corporation (“Sherritt” or the “Corporation”) (TSX: S)

is pleased to announce the release of its 2024 Sustainability Disclosures, including its Annual Sustainability

Report, Climate Report, Tailings Management Report and Sustainability Scorecard outlining the

Corporation’s performance on environmental, social, and governance (“ESG”) matters.

“Sustainability is fundamental to our business, to our social license to operate in our host communities and

countries and to our valued customers and other stakeholders,” said Leon Binedell, Executive Chairman,

President and CEO of Sherritt. “Our 2024 reports showcase how we are elevating our performance across

health and safety, environmental stewardship and responsible production and supply. In 2024, we

embarked on a thorough review of our sustainability vision. We refreshed our near -term targets, updated

our long-term goals and ensured our sustainability strategy is aligned with the feedback from our partners,

customers, communities, and investors. This process has strengthened our resolve to deliver lasting value

to all our stakeholders and I am proud to affirm our progress as we mark another milestone year in our

sustainability journey. We encourage our stakeholders to review these reports, as your insights and

perspectives help shape and drive our shared goals.”

Highlights from Sherritt’s 2024 sustainability reports include:

• Health and Safety

Health and safety remains Sherritt’s highest priority. In 2024, far-reaching enhancements to safety

practices and policies were implemented. A series of safety strategy sessions were completed with

each operation to create a multi-year roadmap for continued safety enhancements with an initial focus

on felt leadership, supervisor training , contractor safety protocols and learning and development to

strengthen safety culture and promote safe workplace behaviours at all operations.

• Environmental Stewardship

Sherritt has a strong environmental management system that is designed to align with global

standards, comply with regulatory requirements and maintain the Corporation’s social license to

operate.

In 2024, Sherritt commenced the Moa JV’s low-capital-intensity tailings project. The project, expected

to be completed in late 2026 , will be engineered and built to international standards and deliver an

environmentally responsible tailings solution that will last for the entirety of the mine’s estimated 25

year life.

Work also continued to identify climate -related risks and opportunities and to develop effective

mitigation and management strategies aimed at reducing risk and capitalizing on emerging

opportunities. Among the key actions undertaken were completing a climate risk and opportunity

assessment for Energas S.A. as well as establishing baseline energy and greenhouse gas (“GHG”)

emissions assessments for Moa Nickel S.A. and Sherritt’s operations in Fort Saskatchewan. These

initiatives yielded several findings with the potential to lower GHG emissions intensity, reduce

operating costs and enhance compliance with customer requirements.

• Responsible Production and Supply

Sherritt continues to demonstrate its commitment to ethical and responsible production, supply and

sourcing practices aligning with internationally-recognized industry frameworks . Sherritt achieved a

self-assessed Level A in all of The Mining Association of Canada’s Towards Sustainable Mining

protocols at Sherritt’s operations in Fort Saskatchewan and confirmed independent validation of its

conformance with the London Metal Exchange’s Track B responsible sourcing requirements. Sherritt

completed a comprehensive risk assessment of its mineral supply chain against O rganization for

Economic Co-operation and Development (OECD) standards, identifying no significant risks, and

advanced its Indigenous Relations and Reconciliation Road Map, strengthening its commitment to

meaningful partnerships with Indigenous communities. As a result of work that began in 2024, Sherritt

also became a Participant of the Copper Mark as the Corporation aims to obtain The Nickel Mark

award for the refinery facilities in Fort Saskatchewan in the future.

Sherritt’s 202 4 Sustainability Report, Climate Report, Tailings Management Report and Sustainability

Scorecard are available on Sherritt’s website at www.sherritt.com.

Sherritt’s 2024 Sustainability Report and Sustainability Scorecard were prepared with reference to the

Global Reporting Initiative’s (GRI) and Sustainability Accounting Standards Board (SASB) disclosure

standards.

About Sherritt

Sherritt is a world leader in using hydrometallurgical processes to mine and refine nickel and cobalt – metals

deemed critical for the energy transition. Sherritt’s Moa Joint Venture has a current estimated mine life of

25 years and has embarked on an expa nsion program focused on increasing annual mixed sulphide

precipitate production by 20% of contained nickel and cobalt. The Corporation’s Power division, through its

ownership in Energas S.A., is the largest independent energy producer in Cuba with install ed electrical

generating capacity of 506 MW, representing approximately 10% of the national electrical generating

capacity in Cuba. The Energas facilities are comprised of two combined cycle plants that produce low-cost

electricity from one of the lowest carbon emitting sources of power in Cuba. Sherritt’s common shares are

listed on the Toronto Stock Exchange under the symbol “S”.

For further information, please contact:

Tom Halton

Director, Investor Relations and Corporate Affairs

Email: [email protected]

Telephone: (416) 935-2451

www.sherritt.com

FORWARD-LOOKING STATEMENTS

Certain statements and other information included in this press release constitute “forward -looking

information” or “forward -looking statements” (collectively, “forward -looking statements”) under applicable

securities laws (such statements are often accompanied by words such as “anticipate”, “forecast”, “expect”,

“believe”, “m ay”, “will”, “should”, “estimate”, “intend” or other similar words). All statements in this press

release, other than those relating to historical information, are forward -looking statements, including, but

not limited to, statements regarding strategies, plans and estimated production amounts resulting from

expansion of mining operations at the Moa Joint Venture; the anticipated completion and expected benefits

of the Moa Joint Venture tailings project; potential GHG emission reductions; cost savings from identifying

climate-related risks and opportunities; and the Corporation’s goal to obtain The Nickel Mark award . The

Corporation cautions readers of this press release not to place undue reliance on any forward -looking

statement as a number of factors coul d cause actual future results, conditions, actions or events to differ

materially from the targets, expectations, estimates or intentions expressed in the forward -looking

statements. The key risks and uncertainties should be considered in conjunction with the risk factors

described in the Corporation’s other documents filed with the Canadian securities authorities, including

without limitation the “Managing Risk” section of the Management’s Discussion and for the three and six

months ended June 30, 2025 and the Annual Information Form of the Corporation dated March 24, 2025

for the period ending December 31, 2024, which is available on SEDAR+ at www.sedarplus.ca.

The forward-looking information and statements contained in this press release are made as of the date

hereof and the Corporation undertakes no obligation to update publicly or revise any oral or written forward-

looking information or statements, whether as a result of new information, future events or otherwise, except

as required by applicable securities laws. The forward-looking information and statements contained herein

are expressly qualified in their entirety by this cautionary statement.