Advanced Drainage Systems, Inc. - Form 8-K

Advanced Drainage Systems, Inc. (ADS) has realigned its reportable segments to Stormwater and Wastewater, following the acquisition of National Diversified Sales (NDS). This realignment aligns with how the Chief Operating Decision Maker assesses performance and allocates resources. The company has also changed its primary segment profitability metric from adjusted gross profit to Adjusted EBITDA. Historical segment results for fiscal years 2026, 2025, and 2024 have been recast to reflect these changes. The segment realignment did not impact previously reported consolidated net sales, income from operations, net income attributable to ADS, or earnings per share. The filing includes recast historical financial information for quarterly periods within fiscal years 2026, 2025, and 2024 as an exhibit, presented for informational purposes and not intended to amend or restate previous financial statements. This report should be read in conjunction with ADS's Annual Report on Form 10-K for the fiscal year ended March 31, 2026.