X0407 4 2023-04-28 1 0001828989 Panacea Acquisition Corp. II PANA 0001842055 EcoR1 Panacea Holdings II, LLC C/O PANACEA ACQUISITION CORP. II 357 TEHAMA STREET, FLOOR 3 SAN FRANCISCO CA 94103 1 0 1 0 0001567938 EcoR1 Capital Fund, L.P. C/O PANACEA ACQUISITION CORP. II 357 TEHAMA STREET, FLOOR 3 SAN FRANCISCO CA 94103 1 0 1 0 0001598292 EcoR1 Capital Fund Qualified, L.P. C/O PANACEA ACQUISITION CORP. II 357 TEHAMA STREET, FLOOR 3 SAN FRANCISCO CA 94103 1 0 1 0 0001778011 EcoR1 Venture Opportunity Fund, LP C/O PANACEA ACQUISITION CORP. II 357 TEHAMA STREET, FLOOR 3 SAN FRANCISCO CA 94103 1 0 1 0 0001587114 EcoR1 Capital, LLC C/O PANACEA ACQUISITION CORP. II 357 TEHAMA STREET, FLOOR 3 SAN FRANCISCO CA 94103 1 0 1 0 0001816370 Biotech Opportunity GP, LLC C/O PANACEA ACQUISITION CORP. II 357 TEHAMA STREET, FLOOR 3 SAN FRANCISCO CA 94103 1 0 1 0 0001454385 NODELMAN OLEG C/O PANACEA ACQUISITION CORP. II 357 TEHAMA STREET, FLOOR 3 SAN FRANCISCO CA 94103 1 0 1 0 0 Class A ordinary shares 2023-04-28 4 D 0 545000 D 0 D On April 10, 2023, Panacea Acquisition Corp. II (the "Company") announced that it did not consummate an initial business combination by April 9, 2023, the deadline under its Amended and Restated Memorandum and Articles of Association. In connection with the winding up of the Company, the Class A ordinary shares, par value $0.0001 per share, held by the Reporting Persons were surrendered for no consideration on April 28, 2023. The reporting owner, EcoR1 Panacea Holdings II, LLC (the "Sponsor"), in whose name the securities reported herein were held, is managed by its managing members, EcoR1 Capital Fund, L.P., EcoR1 Capital Fund Qualified, L.P. and EcoR1 Venture Opportunity Fund, L.P. The general partner of EcoR1 Capital Fund, L.P. and EcoR1 Capital Fund Qualified, L.P. is EcoR1 Capital, LLC and the general partner of EcoR1 Venture Opportunity Fund, L.P. is Biotech Opportunity GP, LLC (together with EcoR1 Capital, LLC, the "General Partners"). Oleg Nodelman is the manager of each of the General Partners. Each of the Reporting Persons may have been deemed to be a beneficial owner of the shares held by the Sponsor but each (other than the Sponsor) disclaims beneficial ownership of any such shares except to the extent of its respective pecuniary interest therein. Oleg Nodelman, the manager of each of the General Partners, serves on the board of directors of the Company. For the purposes of Section 16 of the Securities Exchange Act of 1934, as amended, each of the Reporting Persons (other than Mr. Nodelman) may be deemed a director by deputization with respect to the Company on the basis of Mr. Nodelman's service on the Company's board of directors. EcoR1 Panacea Holdings II, LLC, By: /s/ Oleg Nodelman, Chief Executive Officer 2023-05-02 EcoR1 Capital Fund, L.P., By: /s/ Oleg Nodelman, Manager of EcoR1 Capital, LLC, its general partner 2023-05-02 EcoR1 Capital Fund Qualified, L.P., By: /s/ Oleg Nodelman, Manager of EcoR1 Capital, LLC, its general partner 2023-05-02 EcoR1 Venture Opportunity Fund, L.P., By: /s/ Oleg Nodelman, Manager of Biotech Opportunity GP, LLC, its general partner 2023-05-02 EcoR1 Capital, LLC, By: /s/ Oleg Nodelman, Manager 2023-05-02 Biotech Opportunity GP, LLC, By: /s/ Oleg Nodelman, Manager 2023-05-02 /s/ Oleg Nodelman 2023-05-02