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Sherritt Announces the Retirement of its Chairman

Management Changes

NOT FOR DISTRIBUTION TO UNITED STATES NEWSWIRE SERVICES

OR FOR DISSEMINATION IN THE UNITED STATES

Sherritt Announces the Retirement of its Chairman

TORONTO – June 9, 2025 – Sherritt International Corporation (“Sherritt” or the “Corporation”)

(TSX:S) today announced that Sir Richard Lapthorne, Chairman of the Board of Directors (the

“Board”), has advised the Corporation that his previously announced retirement will be effective

today due to personal reasons.

Sir Richard has served as Chairman of the Board since June 2019. Over that time, the Corporation

has undergone significant transformation, strengthening its balance sheet, advancing operational

capabilities, and navigating an extended period of commodity price volatility.

“Serving as Chairman of Sherritt has been a profound responsibility and privilege,” said Sir

Richard. “With the Corporation now well-positioned for long-term growth, this is the right time to

begin a leadership transition. I have every confidence in the Board and executive team to

continue building on the momentum we have established.”

During Sir Richard’s tenure as Chairman, Sherritt completed two major debt restructurings,

implemented a disciplined capital strategy, and made critical investments to extend the life of

key operations. These efforts have enabled the Corporation to deliver improved future cash

flow, enhance operational efficiency, and position itself as a reliable supplier of critical minerals.

“On behalf of the Corporation, I want to thank Sir Richard for his leadership,” said Leon Binedell,

President and CEO of Sherritt. “His guidance helped steer Sherritt through market turbulence

and into a position of great potential. We are deeply grateful for his service.”

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 an

estimated mine life of approximately 25 years and is advancing an expansion program focused

on increasing annual MSP production by 20% of contained nickel and cobalt. The Corporation’s

Power division, through its ownership in Energas, is the largest independent energy producer in

Cuba with installed 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 more information, please contact:

Tom Halton, Director of Investor Relations and Corporate Affairs

Telephone: (416) 935-2451

Toll-free: 1 (800) 704-6698

Email: [email protected]

www.sherritt.com

FORWARD-LOOKING STATEMENTS

This press release contains certain forward-looking statements. Forward-looking statements can

generally be identified by the use of statements that include such words as “believe”, “expect”,

“anticipate”, “intend”, “plan”, “forecast”, “likely”, “may”, “will”, “could”, “should”, “suspect”, “outlook”,

“potential”, “projected”, “continue” or other similar words or phrases. Specifically, forward-looking

statements in this document include, but are not limited to, statements regarding strategies, plans

and estimated production amounts resulting from expansion of mining operations at the Moa JV

and dividend growth from the Power division.

Forward-looking statements are not based on historical facts, but rather on current expectations,

assumptions and projections about future events, including commodity and product prices and

demand; the level of liquidity and access to funding; share price volatility; nickel, cobalt and

fertilizer production results and realized prices; current and future demand products produced by

Sherritt; global demand for electric vehicles and the anticipated corresponding demand for cobalt

and nickel; revenues and net operating results; environmental risks and liabilities; compliance

with applicable environmental laws and regulations; advancements in environmental and

greenhouse gas (“GHG”) reduction technology; GHG emissions reduction goals and the

anticipated timing of achieving such goals, if at all; statistics and metrics relating to Environmental,

Social and Governance (“ESG”) matters which are based on assumptions or developing

standards; environmental rehabilitation provisions; risks related to the U.S. government policy

toward Cuba; current and future economic conditions in Cuba; the level of liquidity and access to

funding; Sherritt share price volatility; and certain corporate objectives, goals and plans for 2025.

By their nature, forward-looking statements require the Corporation to make assumptions and are

subject to inherent risks and uncertainties. There is significant risk that predictions, forecasts,

conclusions or projections will not prove to be accurate, that the assumptions may not be correct

and that a ctual results may differ materially from such predictions, forecasts, conclusions or

projections.

The Corporation cautions readers of this press release not to place undue reliance on any

forward-looking statement as a number of factors could cause actual future results, conditions,

actions or events to differ materially from the targets, expectations, estimates or intentions

expressed in the forward-looking statements. These risks, uncertainties and other factors include,

but are not limited to, commodity risks related to the production and sale of nickel cobalt and

fertilizers; security market fluctuations and price volatility; level of liquidity of Sherritt, including

access to capital and financing; the ability of the Moa JV to pay dividends; the risk to Sherritt’s

entitlements to future distributions (including pursuant to the Cobalt Swap) from the Moa JV; risks

related to Sherritt’s operations in Cuba; risks related to the U.S. government policy toward Cuba,

including the U.S. embargo on Cuba and the Helms -Burton legislation; political, economic and

other risks of foreign operations, including the impact of geopolitical events on global prices for

nickel, cobalt, fertilizers, or certain other commodities; uncertainty in the ability of the Corporation

to enforce legal rights in foreign jurisdictions; u ncertainty regarding the interpretation and/or

application of the applicable laws in foreign jurisdictions; risk of future non-compliance with debt

restrictions and covenants; risks related to environmental liabilities including liability for

reclamation costs, tailings facility failures and toxic gas releases; compliance with applicable

environment, health and safety legislation and other associated matters; risks associated with

governmental regulations regarding climate change and greenhouse gas emissions; risks relating

to community relations; maintaining social license to grow and operate; uncertainty about the

pace of technological advancements required in relation to achieving ESG targets; risks to

information technologies systems and cybersecurity; risks associated with the operation of large

projects generally; risks related to the accuracy of capital and operating cost estimates; the

possibility of equipment and other failure; potential interruptions in transportation; identification

and management of growth opportunities; the ability to replace depleted mineral reserves; risks

associated with the Corporation’s joint venture partners; variability in production at Sherritt’s

operations in Cuba; risks associated with mining, processing and refining a ctivities; risks

associated with the operation of large projects generally; risks related to the accuracy of capital

and operating cost estimates; the possibility of equipment and other failures; uncertainty of gas

supply for electrical generation; reliance on key personnel and skilled workers; growth opportunity

risks; uncertainty of resources and reserve estimates; the potential for shortages of equipment

and supplies, including diesel; supplies quality issues; risks related to the Corporation’s corporate

structure; foreign exchange and pricing risks; credit risks; competition in product markets; future

market access; interest rate changes; risks in obtaining insurance; uncertainties in labour

relations; legal contingencies; risks related to the Corporation’s accounting policies; uncertainty

in the ability of the Corporation to obtain government permits; failure to comply with, or changes

to, applicable government regulations; bribery and corruption risks, including failure to comply

with the Corruption of Foreign Public Officials Act or applicable local anti-corruption law; the ability

to accomplish corporate objectives, goals and plans for 2025; and the ability to meet other factors

listed from time to time in the Corporation’s continuous disclosure documents.

The Corporation, together with its Moa JV, is pursuing a range of growth and expansion

opportunities, including without limitation, process technology solutions, development projects,

commercial implementation opportunities, life of mine extension opportunities and the conversion

of mineral resources to reserves. In addition to the risks noted above, factors that could, alone or

in combination, prevent the Corporation from successfully achieving these opportunities may

include, without limitation: identifying suitable commercialization and other partners; successfully

advancing discussions and successfully concluding applicable agreements with external parties

and/or partners; successfully attracting required financing; successfully developing and proving

technology required for the potential opportunity; successfully overcoming technical and

technological challenges; successful environmental assessment and stakeholder engagement;

successfully obtaining intellectual property protection; successfully completin g test work and

engineering studies, prefeasibility and feasibility studies, piloting, scaling from small scale to large

scale production, procurement, construction, commissioning, ramp -up to commercial scale

production and completion; and securing regulatory and government approvals. There can be no

assurance that any opportunity will be successful, commercially viable, completed on time or on

budget, or will generate any meaningful revenues, savings or earnings, as the case may be, for

the Corporation. In addition, the Corporation will incur costs in pursuing any particular opportunity,

which may be significant.

Readers are cautioned that the foregoing list of factors is not exhaustive and 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 Analysis for the three months ended March 31, 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 Corporation may, from time to time, make oral forward-looking statements. The Corporation

advises that the above paragraph and the risk factors described in this press release and in the

Corporation’s other documents filed with the Canadian securities authorities should be read for a

description of certain factors that could cause the actual results of the Corporation to differ

materially from those in the oral forward-looking statements. 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.