Investor Presentation

Demonstrated Significant Growth in North American Adjusted Segment EBITDA Margins(1) 12.7% +910 bps Improvement •Network Optimization . Footprint Consolidation Investments to Improve Operational Efficiencies Focus on Strategic M&A 21.8% Lean 6-Sigma Programs Improved Price Realization FY12 FY18 Non-GAAP Financial Measure. See reconciliations in the Appendix. Note: Previously reported 22.6% prior to fiscal 2019 recast to include merchandising displays and modify certain allocations. FY12 not recast. WestRock 1) 20 20

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