DELAWARE CHARTER GUARANTEE & TRUST CO - 31 Dec 2025 SCHEDULE 13G Report for Advanced Drainage Systems, Inc. Common Stock, par value $0.01 per share (WMS)

Filing Manager
DELAWARE CHARTER GUARANTEE & TRUST CO
Reporting Manager
Advanced Drainage Systems Inc. Employee Stock Ownership Plan Trust
Security
Advanced Drainage Systems, Inc. Common Stock, par value $0.01 per share
Symbol
WMS
Shares outstanding
77,153,550 shares
Disclosed Ownership
4,629,213 shares
Ownership
6%
Form type
SCHEDULE 13G
Filing time
13 Feb 2026, 14:41:44 UTC
Date of event
31 Dec 2025
SEC
View on sec.gov

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Quoteable Key Fact

"DELAWARE CHARTER GUARANTEE & TRUST CO disclosed 6% ownership in Advanced Drainage Systems, Inc. Common Stock, par value $0.01 per share (WMS) on 31 Dec 2025."

Quick Takeaways

  • DELAWARE CHARTER GUARANTEE & TRUST CO filed SCHEDULE 13G for Advanced Drainage Systems, Inc. Common Stock, par value $0.01 per share (WMS).
  • Disclosed ownership: 6%.
  • Date of event: 31 Dec 2025.

What Changed

  • No earlier schedule filing is available for direct comparison.
  • Current filing was accepted on 13 Feb 2026, 14:41.

Why This Matters

  • This page explains what this Schedule 13D/13G filing tells you before manager-level rows.
  • You can verify ownership claims directly against the original SEC filing.

Official SEC Source

Backed by Schedule 13D/13G

Beneficial ownership values are sourced from the original SEC Schedule 13D/13G filing.

See Original Filing

Reporting Managers (1)

Name Ownership Shares Owned sole voting power shared voting power Signature Title CIK
Advanced Drainage Systems Inc. Employee Stock Ownership Plan Trust 6% 4,629,213 0 4,629,213 Jared Gillespie Jared Gillespie, Vice President, Operations

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