Covista (CVSA) Proxy filing summary

Executive summary

• Supplement dated Oct. 14, 2026, clarifies voting standards for the Nov. 11, 2026 annual meeting; proposals remain unchanged.

• Shareholders who already voted by Internet, telephone, or mail need not act unless they want to change their vote.

Voting matters and shareholder proposals

• Abstentions, withheld votes, and broker non-votes count toward quorum but not votes on director elections, advisory executive compensation, or the 2026 equity incentive plan.

• Brokers may vote uninstructed shares only on auditor ratification; broker non-votes are present for quorum and may be voted on that proposal.

• Required approval standard clarified as a majority of shares represented and entitled to vote on each proposal.