• JHX does not consider Q1 FY26 earnings differed materially from market expectations
• Variation in FY26 guidance could be material, reflecting changes in North America housing outlook
• JHX communicated revised FY26 guidance promptly after becoming aware

James Hardie Industries plc (JHX) has responded to an ASX aware letter, providing details on its Q1 FY26 earnings and the variation in its FY26 guidance. JHX does not consider any measure of its statutory or underlying earnings for Q1 FY26 differed materially from market expectations, noting it did not publish earnings guidance and considering sell-side analyst forecasts, housing market data, and investor expectations. JHX first became aware of the likely final outcome of its Q1 FY26 results on 7 August 2025 and did not consider the variance between expected earnings and market expectations would have a material effect on the price or value of JHX's securities. Regarding the variation in its FY26 guidance between May and August 2025, JHX considered this could be information that a reasonable person would expect to have a material effect, as the most significant variation was with respect to expected revenue for the 'North America Fiber Cement' segment, which was approximately 13-16% down from the May guidance. JHX communicated the variation promptly and without delay after becoming aware of it at a Board sub-committee meeting on 20 August 2025, the same day the results were released.

JHX's FY26 guidance for the 'Sliding & Trim' segment (consisting of the legacy 'North America Fiber Cement' segment and the acquired 'Exteriors' business from AZEK) is between $2.675 and $2.850 billion, which represents a 13-16% decrease from the May 2025 guidance.