X0609 4 2026-08-07 0002131524 Braveheart Bio, Inc. BRVE 0001889476 AH Bio Fund IV, L.P. false C/O ANDREESSEN HOROWITZ 2865 SAND HILL ROAD, SUITE 101 MENLO PARK CA 94025 false false true false 0001889898 AH Equity Partners Bio IV, L.L.C. false C/O ANDREESSEN HOROWITZ 2865 SAND HILL ROAD, SUITE 101 MENLO PARK CA 94025 0 0 1 0 0001160077 Andreessen Marc L false C/O ANDREESSEN HOROWITZ 2865 SAND HILL ROAD, SUITE 101 MENLO PARK CA 94025 0 0 1 0 0001166586 HOROWITZ BENJAMIN A false C/O ANDREESSEN HOROWITZ 2865 SAND HILL ROAD, SUITE 101 MENLO PARK CA 94025 0 0 1 0 0 Common Stock 2026-08-07 4 C 0 9132420 A 9132420 I By AH Bio Fund IV, L.P. Common Stock 2026-08-07 4 P 0 1100000 18 A 10232420 I By AH Bio Fund IV, L.P. Series A Preferred Stock 2026-08-07 4 C 0 40000000 0 D Common Stock 9132420 0 I By AH Bio Fund IV, L.P. Series A Preferred Stock automatically converted into Common Stock immediately prior to the closing of the Issuer's initial public offering for no additional consideration, on a 4.38-for-1 basis. The Series A Preferred Stock had no expiration date. The reported securities are held by AH Bio Fund IV, L.P. ("AH Bio Fund IV"), for itself and as nominee for AH Bio Fund IV-B, L.P., AH 2022 Annual Fund, L.P., AH 2022 Annual Fund-B, L.P., AH 2022 Annual Fund-QC, L.P. and CLF Partners III, LP. AH Equity Partners Bio IV, L.L.C. ("AH EP Bio IV") is the general partner of AH Bio Fund IV and has sole voting and dispositive power with regard to the securities held by AH Bio Fund IV for itself and as nominee. The managing members of AH EP Bio IV are Marc Andreessen and Ben Horowitz. Marc Andreessen and Ben Horowitz may be deemed to share voting and dispositive power with respect to the securities held by AH Bio Fund IV for itself and as nominee. (Continued from Footnote 2) Each of the Reporting Persons disclaims the existence of a "group" and disclaims beneficial ownership of the securities held by AH Bio Fund IV for itself and as nominee (and this report shall not be deemed an admission that any such person is the beneficial owner of such securities), except to the extent of such person's pecuniary interest therein, if any. AH Bio Fund IV, L.P., By AH Equity Partners Bio IV, L.L.C., Its General Partner, By /s/ Phil Hathaway, Chief Operating Officer 2026-08-11 AH Equity Partners Bio IV, L.L.C., By /s/ Phil Hathaway, Chief Operating Officer 2026-08-11 /s/ Phil Hathaway, Attorney-in-Fact for Marc L. Andreessen 2026-08-11 /s/ Phil Hathaway, Attorney-in-Fact for Benjamin Horowitz 2026-08-11