Advanced Drainage Systems (WMS) Proxy filing summary

Voting matters and shareholder proposals

• Shareholders will vote on the election of nine directors, each individually listed for approval.

• Ratification of Deloitte & Touche LLP as the independent registered public accounting firm for fiscal year 2027 is on the agenda.

• A non-binding advisory vote on executive compensation for named executive officers will be held.

Board of directors and corporate governance

• The board recommends voting in favor of all nine director nominees, indicating support for current leadership.

Executive compensation and say-on-pay

• Shareholders are asked to approve, on an advisory basis, the compensation of named executive officers.