X0202 SCHEDULE 13G/A 0000831001 XXXXXXXX LIVE 1 Ordinary Shares 03/31/2026 0001782999 PureTech Health plc G7297M101 6 TIDE STREET SUITE 400 BOSTON MA 02210 Rule 13d-1(b) CITIGROUP INC DE 0.00 14636273.00 0.00 14636273.00 14636273.00 6.0 HC Citigroup Global Markets Holdings Inc. NY 0.00 14636273.00 0.00 14636273.00 14636273.00 6.0 HC Citigroup Financial Products Inc. DE 0.00 14636273.00 0.00 14636273.00 14636273.00 6.0 CO Citigroup Global Markets Holdings Bahamas Ltd C5 0.00 14636273.00 0.00 14636273.00 14636273.00 6.0 FI Citigroup Global Markets Ltd X0 0.00 14636273.00 0.00 14636273.00 14636273.00 6.0 FI PureTech Health plc 6 TIDE STREET, SUITE 400, BOSTON, MASSACHUSETTS, 02210. Citigroup Global Markets Limited ("CGML"), Citigroup Global Markets Holdings Bahamas Limited ("CGMHBL"), Citigroup Financial Products Inc. ("CFP"), Citigroup Global Markets Holdings Inc. ("CGM Holdings"), Citigroup Inc. ("Citigroup"). CGML: 25 Canada Square, London E14 5LB, United Kingdom. CGMHBL: Ocean Center, Montagu Foreshore, East Bay Street Nassau, New Providence Bahamas 19084. CFP, CGM Holdings and Citigroup: 388 Greenwich Street, New York, NY 10013. CGML is chartered and headquartered in England. CGMHBL is chartered and headquartered in the Bahamas. CGM Holdings is a New York corporation. CFP and Citigroup are Delaware corporations. N HC FI Foreign Financial Institution 14,636,273 6.0% 0 14,636,273 0 14,636,273 Y Y N CGMHBL is the sole stockholder of CGML. CFP is the sole stockholder of CGMHBL. CGM Holdings is the sole stockholder of CFP. Citigroup is the sole stockholder of CGM Holdings. Y Y N By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under ? 240.14a-11. By signing below I certify that, to the best of my knowledge and belief, the foreign regulatory scheme applicable to Foreign Financial Institution is substantially comparable to the regulatory scheme applicable to the functionally equivalent U.S. institution(s). I also undertake to furnish to the Commission staff, upon request, information that would otherwise be disclosed in a Schedule 13D. CITIGROUP INC Ruth M Clark 05/11/2026 Citigroup Global Markets Holdings Inc. Ruth M Clark 05/11/2026 Citigroup Financial Products Inc. Ruth M Clark 05/11/2026 Citigroup Global Markets Holdings Bahamas Ltd David Graham 05/11/2026 Citigroup Global Markets Ltd Simon Cumming 05/11/2026