X0508 4 2025-12-09 0 0001779128 Strata Critical Medical, Inc. SRTA 0001859732 Heyburn William A. C/O STRATA CRITICAL MEDICAL, INC. 31 HUDSON YARDS, 14TH FLOOR NEW YORK NY 10001 1 1 0 0 Co-CEO and CFO 0 Class A common stock, $0.0001 par value per share 2025-12-09 4 P 0 17000 4.4732 A 1403436 D The reporting person realized short-swing profits under Section 16(b) of the Exchange Act as a result of transactions reported on this Form 4. On December 10, 2025, the reporting person disgorged to the Issuer the Section 16(b) short-swing profits realized by the reporting person from such transactions. The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $4.45 to $4.48, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the ranges set forth in this footnote to this Form 4. /s/ Melissa M. Tomkiel, as attorney-in-fact for William A. Heyburn 2025-12-10