Teck Resources

We believe that disclosing these measures assists readers in understanding the ongoing cash-generating potential of our business in order to provide liquidity to fund working capital needs, service outstanding debt, fund future capital expenditures and investment opportunities, and pay dividends.

SEC original ↗Teck Resources — Earnings release (6-K exhibit)EX-99Oct 30, 2026

5 Teck Resources Limited 2026 Third Quarter News Release • As previously disclosed, we are advancing construction of Rock Bench 6 at the QB TMF, which was not included in our 2026 annual capital expenditure guidance, and as a result, we expect our 2026 annual sustaining capital expenditures to be in the top half of our previously disclosed guidance range of $1.3–$1.5 billion.

SEC original ↗Teck Resources — Earnings release (6-K exhibit)EX-99Oct 30, 2026

Total debt – Total debt is the sum of debt plus lease liabilities, including the current portions of debt and lease liabilities.

SEC original ↗Teck Resources — Earnings release (6-K exhibit)EX-99Oct 30, 2026

Net debt (cash) – Net debt (cash) is total debt, less cash and cash equivalents.

SEC original ↗Teck Resources — Earnings release (6-K exhibit)EX-99Oct 30, 2026

Net cash is the amount by which our cash balance exceeds our total debt balance.

SEC original ↗Teck Resources — Earnings release (6-K exhibit)EX-99Oct 30, 2026

Statements regarding the availability of our credit facilities are based on assumptions that we will be able to satisfy the conditions for borrowing at the time of a borrowing request and that the facilities are not otherwise terminated or accelerated due to an event of default.

SEC original ↗Teck Resources — Earnings release (6-K exhibit)EX-99Oct 30, 2026

This was achieved while simultaneously dealing with severe weather events across our copper operations, prioritizing the safety of our people while maintaining solid operating performance.

SEC original ↗Teck Resources — Earnings release (6-K exhibit)EX-99Oct 30, 2026

• Our zinc segment generated gross profit before depreciation and amortization 1 of $638 million in Q3 2026, compared with $454 million in the same period last year driven by higher commodity prices and our continued focus on cash flow generation through our optimized feed strategy at our Trail Operations, which also resulted in a pre-tax impairment reversal of $888 million.

SEC original ↗Teck Resources — Earnings release (6-K exhibit)EX-99Oct 30, 2026

• Integration planning continues to advance, with a focus on Day 1 readiness, maintaining safe and reliable operations, and ensuring business continuity while preparing the combined company to realize the strategic and operational benefits of the transaction.

SEC original ↗Teck Resources — Earnings release (6-K exhibit)EX-99Oct 30, 2026

The combination of QB and Collahuasi offers shareholders of both operations the fastest route to material copper growth at the lowest risk and capital intensity, while delivering superior returns relative to standalone alternatives and preserving future expansion opportunities at both operations.

SEC original ↗Teck Resources — Earnings release (6-K exhibit)EX-99Oct 30, 2026

Our zinc segment generated gross profit before depreciation and amortization 1 of $638 million in Q3 2026, compared with $454 million in the same period last year driven by higher commodity prices and our continued focus on cash flow generation through our optimized feed strategy at our Trail Operations, which also resulted in a pre-tax impairment reversal of $888 million.

SEC original ↗Teck Resources — Earnings release (6-K exhibit)EX-99Oct 30, 2026

These statements involve known and unknown risks, uncertainties and other factors that may cause actual results or events to differ materially from those anticipated in such forward-looking statements.

SEC original ↗Teck Resources — Earnings release (6-K exhibit)EX-99Oct 30, 2026

Further information concerning risks, assumptions and uncertainties associated with these forward-looking statements and our business can be found in our Annual Information Form for the year ended December 31, 2025 filed under our profile on SEDAR+ (www.

SEC original ↗Teck Resources — Earnings release (6-K exhibit)EX-99Oct 30, 2026