Ms. Emma Chapman reports

TECK PROVIDES UPDATE ON CHILE OPERATIONS MAINTENANCE

A mechanical issue at Teck Resources Ltd.'s Carmen de Andacollo operations in Chile has required a maintenance shutdown of the semi-autogenous grinding mill.

The company estimates that production will be interrupted for approximately one month for repairs. CdA will mitigate the effect of the interruption by rescheduling other planned plant maintenance to coincide with the mill downtime. It does not expect a material production impact from the downtime, and its previously disclosed guidance for 2025 total annual copper production and 2025 annual copper production for CdA remains unchanged.

Teck also announced an unrelated temporary outage of the shiploader at the Quebrada Blanca (QB) port facility in northern Chile. Its preliminary estimate is that repairs to the shiploader will take approximately one month. Operations at the QB mine and plant continue as normal, and the operation have capacity to ship through alternative ports. As a result, Teck does not expect a material sales impact from the outage, and previously disclosed guidance for 2025 annual copper production for QB remains unchanged.

About Teck Resources Ltd.

Teck is a leading Canadian resource company focused on responsibly providing metals essential to economic development and the energy transition. Teck has a portfolio of world-class copper and zinc operations across North and South America and an industry-leading copper growth pipeline. It is focused on creating value by advancing responsible growth and ensuring resilience built on a foundation of stakeholder trust. Headquartered in Vancouver, Canada, Teck has shares listed on the Toronto Stock Exchange under the symbols TECK.A and TECK.B and on the New York Stock Exchange under the symbol TECK.

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