Investor Presentation October 2023

Illustrative Adjusted EBITDA and free cash flow capabilities assumptions (non-GAAP measures) 1 Note that Adjusted EBITDA and Free cash flow are forward- looking non-GAAP measures that do not have any standardized meaning prescribed by GAAP and therefore, are unlikely to be comparable to similar measures presented by other companies. For historical Adjusted EBITDA, refer Additional Information - Non-GAAP Measures in the Company's 2022 Annual MD&A. For historical Free cash flow, refer to footnote 3. 2 Adjusted EBITDA is a forward-looking non-GAAP measure and reflects Methanex's proportionate ownership interest. We target to hedge ~70% of our North American natural gas requirements. The unhedged portion of our North American natural gas requirements are purchased under contracts at spot prices. Estimates assume Henry Hub natural gas price of ~$3.50/mmbtu based on near-term forward curve. 3 Free cash flow is a forward-looking non-GAAP measure and reflects Methanex's proportionate ownership interest. Free cash flow is presented after lease payments, cash interest (based on current debt levels), debt service, maintenance capital, estimated cash taxes and other cash payments. Various factors such as rising/declining methanol prices, planned and unplanned production outages, production mix, changes in tax rates, and other items that can impact actual Free cash flow. Incremental free cash flow from G3 is presented with zero cash tax due to the significant tax shelter available to it. Free cash flow, both historical and forward-looking, is useful as it provides a measure of our cashflow generation capability and differs from the most comparable GAAP measure, Increase (decrease) in cash and cash equivalents, as it is adjusted to include out proportional share of the Atlas joint venture cashflows and to exclude the non-controlling interests' share of Egypt and Waterfront Shipping, with dividends and repurchase of shares added back. This non-GAAP measure does not have any standardized meaning prescribed by GAAP and therefore, is unlikely to be comparable to a similar measure presented by other companies. 32 Methanex | The Global Methanol Leader | Investor Presentation February 2024 APPENDIX methanex the power of agility

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