DELAWARE CHARTER GUARANTEE & TRUST CO

Holdings History for ADVANCED DRAINAGE SYSTEMS, INC. - Common Stock, par value $0.01 per share (WMS)

Symbol: WMS on NYSE
Investment type: Equity / Common Stock, par value $0.01 per share
Latest Disclosed Shares Owned: 4,629,213 shares
Security Ownership %: 6%

Advanced Drainage Systems Inc. Employee Stock Ownership Plan Trust ownership in ADVANCED DRAINAGE SYSTEMS, INC. Common Stock, par value $0.01 per share (WMS)

13 Feb 2026 - Advanced Drainage Systems Inc. Employee Stock Ownership Plan Trust has filed an SCHEDULE 13G form with the Securities and Exchange Commission (SEC) disclosing ownership of 4,629,213 shares of ADVANCED DRAINAGE SYSTEMS, INC. Common Stock, par value $0.01 per share (WMS). This represents 6% ownership of the company. This is the first filing by DELAWARE CHARTER GUARANTEE & TRUST CO disclosing ownership of ADVANCED DRAINAGE SYSTEMS, INC. Common Stock, par value $0.01 per share (WMS).

Reporting Name	Ownership %	Change	Value $	Shares owned	Change	Activity %	Price	Form	Report date	Filing time
Advanced Drainage Systems Inc. Employee Stock Ownership Plan Trust	6%		$701,834,983	4,629,213			$151.61	13G	31 Dec 2025	13 Feb 2026, 11:02
Advanced Drainage Systems Inc. Employee Stock Ownership Plan Trust	6%		$701,834,983	4,629,213			$151.61	13G	31 Dec 2025	13 Feb 2026, 14:41