X0202 SCHEDULE 13D/A 0002126691-26-000001 0002126691 XXXXXXXX LIVE 3 Warrants to purchase Class A Common Stock, par value $0.0001 per share 05/07/2026 false 0001779128 092667104 Strata Critical Medical, Inc.

666 Third Avenue 25th Floor NEW YORK NY 10017

Velibor Krstic 0041774839182 Via Baraggie 23 Ascona V8 6612 0002126691 N Krstic Velibor PF PF N V8 0.00 0.00 0.00 0.00 0.00 N 0.0 IN IN Warrants to purchase Class A Common Stock, par value $0.0001 per share Strata Critical Medical, Inc. 666 Third Avenue 25th Floor NEW YORK NY 10017 Velibor Krstic Via Baraggie 23, 6612 Ascona, SWITZERLAND Private Investor NONE NONE SWITZERLAND The Warrants previously held by the Reporting Person expired worthless on May 7, 2026. No funds or other consideration were used or received in connection with the expiration of the Warrants. All Warrants previously acquired by the Reporting Person were purchased using personal funds. This Amendment No. 3 is being filed to report that the 1,577,500 Warrants previously held by the Reporting Person (SRTAW) expired worthless on May 7, 2026, in accordance with the terms of the Warrant Agreement dated September 12, 2019. As a result of this expiration, the Reporting Person ceased to be the beneficial owner of more than five percent of the class of securities. This filing constitutes the final amendment to the Schedule 13D of the Reporting Person regarding these securities. The Reporting Person beneficially owns 0 Warrants, which represents 0.0% of the class. The Reporting Person has sole power to vote or to direct the vote and sole power to dispose or to direct the disposition of 0 Warrants. The only transaction in the securities of the Issuer since the last filing is the natural expiration of 1,577,500 Warrants (SRTAW) at a price of 0.00 dollars on May 7, 2026. Not applicable. The Reporting Person ceased to be the beneficial owner of more than five percent of the class of securities on May 7, 2026. To the best knowledge of the Reporting Person, there are no contracts, arrangements, understandings or relationships (legal or otherwise) among the person named in Item 2 and between such person and any person with respect to any securities of the Issuer. NONE Krstic Velibor /s/ Velibor Krstic 05/08/2026