Domtar Light Weight Opaque Papers – Important Pricing Information

Pro forma Q3/2021 compared with Q3/2020 (AhlstromMunksjö) • Net sales increased by 18.7% to EUR 777.0 million (654.5) on higher selling prices and delivery volumes • Comparable EBITDA improved to EUR 93.4 million (78.9), representing 12.0% (12.1) of net sales, on higher delivery volumes. Reported Q3/2021 • Reported operating result was EUR 23.2 million and included items affecting comparability and other items of EUR -23.7 million • Net result was EUR -9.2 million including net financial items of EUR -31.9 million and taxes of EUR -0.4 million

Comments to Results of Operations - Comparison of Three Months Ended December 31, 2017 to Three Months Ended December 31, 2016: • Net sales for the fourth quarter of 2017 decreased by $7 million compared to the fourth quarter of 2016. The sales decline was primarily attributable to a decrease in total sales volume due to the general softening of demand for coated papers and our capacity reductions at our Androscoggin Mill. • Gross margin, excluding depreciation, amortization and depletion expenses, decreased from 16.6% of net sales in the fourth quarter of 2016 to 13.3% in the fourth quarter of 2017. Comments to Results of Operations - Comparison of 12 Months Ended December 31, 2017 to 12 Months Ended December 31, 2016: • Net sales for the 12 months of 2017 decreased by $180 million compared to the 12 months of 2016. The sales decline was attributable to a decrease in total sales volume and a decrease in pricing, partially offset by improvement in product mix. The decrease in volume and pricing were driven by general softening of demand for coated papers and our capacity reductions at the Androscoggin Mill. • Gross margin, excluding depreciation, amortization and depletion expenses, decreased from 11.1% of net sales in the 12 months of 2016 to 9.1% in the 12 months of 2017. Gross margin was favorably impacted in 2016 by $22 million and in 2017 by $4 million as a result of gains included in cost of products sold, associated with the elimination of certain postretirement benefit costs. Click Read More below for additional information.

WestRock is undertaking extensive efforts to identify, contain and recover from this incident quickly and securely. Upon discovering the incident, WestRock immediately began an investigation, implemented business continuity processes and initiated response containment protocols with the support of cybersecurity experts. These actions included proactively shutting down certain systems in an abundance of caution, as well as taking steps to supplement existing security monitoring, scanning and protective measures. The Company also implemented measures, including manual processes, to respond to customers’ needs. The Company is now systematically bringing its information systems back online in a controlled, phased approach. “We remain relentlessly focused on remediating this incident while continuing to safely operate our mills and converting plants,” said Steve Voorhees, chief executive officer. “I am proud of the focus and determination of the WestRock team as we manage through this incident and deliver essential products for our customers.” All of WestRock’s mills and converting locations are producing and shipping paper and packaging. The Company’s mill system production through February 4 was approximately 85,000 tons lower than plan, and the packaging converting operations are close to returning to full planned production levels.