0002044950 2026-10-29 2026-10-29 0002044950 1 2026-10-29 2026-10-29 iso4217:USD pure shares S-1 S-1MEF EX-FILING FEES 333-299405 0002044950 Bambusa Therapeutics, Inc. N/A N/A S-1 Bambusa Therapeutics, Inc. false Equity Common Stock, par value $0.00001 per share true 1357638 16.00 21722208.00 0.000087 1889.83 21722208.00 1889.83 0.00 0.00 1889.83 Represents only the additional number of shares being registered and includes additional shares of common stock that the underwriters have the option to purchase. Does not include the securities that the registrant previously registered on the registration statement on Form S-1, as amended (File No. 333-299405), which was declared effective by the Securities and Exchange Commission on October 29, 2026 (the "Prior Registration Statement"). The registration fee is calculated in accordance with Rule 457(a) under the Securities Act of 1933, as amended, based on the proposed maximum aggregate offering price. The registrant previously registered securities at an aggregate offering price not to exceed $183,281,250.00 on the Prior Registration Statement. In accordance with Rule 462(b) under the Securities Act of 1933, as amended, an additional amount of shares having a maximum aggregate offering price of $21,722,208.00 is hereby registered, which includes shares issuable upon the exercise of the underwriters' option to purchase additional shares.