TORONTO — Sherritt International Corporation (“Sherritt” or the “Corporation”) (TSX:S) announces that Deloitte LLP has formally resigned as the Corporation’s external auditor, effective May 12, 2026. The resignation was not the result of any disagreement between the Corporation and Deloitte on any matter of accounting principles or practices, financial statement disclosure, or auditing scope or procedure. Deloitte’s reports on the Corporation’s previously issued financial statements did not contain any adverse opinion or a disclaimer of opinion, and was not qualified or modified as to uncertainty, audit scope, or accounting principles. Sherritt has commenced a request for proposal process for external audit services to identify a successor auditor. However, the Executive Order (as defined below) may affect the availability of, or willingness of, certain external audit firms to accept an engagement with the Corporation and may lengthen the time required to identify and appoint a successor auditor.