X0508 4 2023-08-31 0001831868 SeaStar Medical Holding Corp ICU 0001949738 Schlorff Eric C/O SEASTAR MEDICAL HOLDING CORPORATION 3513 BRIGHTON BLVD., SUITE 410 DENVER CO 80216 true true Chief Executive Officer false Common Stock, par value $0.0001 per share 2023-08-31 4 A 0 35178 0 A 738753 D Stock Option (Right to Buy) 1.84 2033-04-06 Common Stock 99724 99724 D Stock Option (Right to Buy) 10 2029-03-01 Common Stock 17986 17986 D Stock Option (Right to Buy) 0.53 2030-02-20 Common Stock 83985 83985 D The securities reported in this transaction were issued to the Reporting Person in lieu of cash compensation previously approved by the Compensation Committee. All options reported herein will vest, subject to continued service, on April 6, 2024. These options are fully vested. The option vests with respect to (i) twenty-five percent (25%) of the shares upon completion of one (1) year of service measured from February 20, 2020 and (ii) the balance of the shares subject to the option in a series of thirty-six (36) successive equal monthly installments upon completion of each additional month of service over the thirty-six (36)-month period measured from February 20, 2021. /s/ Eric Schlorff 2023-09-12