 HILLIARD, Ohio--BUSINESS WIRE--Advanced Drainage Systems, Inc. NYSE: WMS ADS or the Company, a leading provider of innovative water management solutions in the stormwater and on-site septic waste water industries today announced financial results for the fourth quarter and fiscal year ended March 31, 2021. Fourth Quarter Fiscal 2021 Results Net sales increased 19.7 to 443.8 million Net income increased 488.1 to 20.8 million Adjusted EBITDA Non-GAAP increased 31.1 to 94.5 milli 