Ecovyst (ECVT) Proxy filing summary

Executive summary

• The annual meeting will be held virtually on May 20, 2026, with shareholders voting on director elections, executive compensation, and auditor ratification.

• Shareholders of record as of April 13, 2026, are eligible to vote, with 109,450,306 shares outstanding.

• The company transitioned to annual director elections, completing board declassification by 2027.

• The board and committees emphasize independence, diversity, and robust governance practices.

Voting matters and shareholder proposals

• Shareholders will vote to elect five director nominees for one-year terms, approve executive compensation on an advisory basis, and ratify PricewaterhouseCoopers LLP as auditor for 2026.

• Shareholders may submit proposals for the 2027 meeting by December 16, 2026.

Board of directors and corporate governance

• The board consists of eight members, seven of whom are independent; half are diverse by gender or ethnicity.

• Board committees include Audit, Compensation, Nominating and Corporate Governance, and Health, Safety, Environment and Security.

• Board refreshment and diversity are priorities, with all current directors joining since 2020.

• Stock ownership guidelines apply to directors and executives.