SeaStar Medical Holding (ICU) investor relations material

Executive summary

• A special meeting of stockholders is scheduled for December 18, 2025, to be held virtually, with voting available online, by phone, or by mail.

• The meeting will address three key proposals: a 1-for-10 reverse stock split, a reduction in authorized shares, and the potential adjournment of the meeting if necessary.

• The Board of Directors recommends voting in favor of all three proposals.

Voting matters and shareholder proposals

• Proposal 1 seeks approval for a 1-for-10 reverse stock split, with the Board having discretion to implement it within one year.

• Proposal 2 requests a reduction in authorized common shares from 450,000,000 to 425,000,000.

• Proposal 3 allows adjournment of the meeting if there are insufficient votes for the other proposals.

• All proposals require a majority of votes cast to pass; abstentions and broker non-votes have no effect.

• Stockholders may submit proposals for the 2026 annual meeting by January 21, 2026.

Board of directors and corporate governance

• The Board is responsible for soliciting proxies and has engaged Medicant Communications Inc. for assistance, with a fee of $6,500 plus expenses.

• Directors and officers may also solicit proxies but will not receive additional compensation for doing so.