0001691082 2026-10-01 2026-10-01 0001691082 1 2026-10-01 2026-10-01 0001691082 2 2026-10-01 2026-10-01 0001691082 3 2026-10-01 2026-10-01 0001691082 4 2026-10-01 2026-10-01 0001691082 5 2026-10-01 2026-10-01 0001691082 6 2026-10-01 2026-10-01 0001691082 7 2026-10-01 2026-10-01 0001691082 1 2026-10-01 2026-10-01 0001691082 2 2026-10-01 2026-10-01 iso4217:USD pure shares S-3 S-3ASR EX-FILING FEES 0001691082 LB PHARMACEUTICALS INC N/A true false S-3 LB PHARMACEUTICALS INC false Equity Common Stock, $0.0001 par value per share true 0.000087 false Equity Preferred Stock, $0.0001 par value per share true 0.000087 false Debt Debt Securities true 0.000087 false Other Warrants true 0.000087 false Other Units true 0.000087 false Equity Common Stock, $0.0001 par value per share true 200000000.00 0.000087 17400.00 false Equity Common Stock, $0.0001 par value per share true 8489673 37.37 317259080.01 0.000087 27601.54 517259080.01 45001.54 0.00 13643.94 31357.60 (1) There are being registered hereunder such indeterminate number of shares of common stock, such indeterminate number of shares of preferred stock, such indeterminate principal amount of debt securities and such indeterminate number of warrants to purchase common stock, preferred stock or debt securities and units consisting of some or all of the foregoing securities, as may be sold from time to time by the Registrant. The securities registered hereunder also include such indeterminate number of shares of common stock, preferred stock and amount of debt securities as may be issued upon conversion of or exchange for debt securities that provide for conversion or exchange, upon exercise of warrants or pursuant to the antidilution provisions of any such securities. (2) Pursuant to Rule 416 under the Securities Act of 1933, as amended (the "Securities Act"), the shares being registered hereunder include such indeterminate number of shares of common stock and preferred stock as may be issuable with respect to the shares being registered hereunder as a result of stock splits, stock dividends or similar transactions. (3) The proposed maximum offering price per unit and maximum aggregate offering prices per class of securities will be determined from time to time by the registrant in connection with the issuance by the registrant of the securities registered hereunder and is not specified as to each class of security pursuant to General Instruction I.D. and Instruction 2.A.iii.c. to the Calculation of Filing Fee Tables and Related Disclosure under Item 16(b) of Form S-3 under the Securities Act. Separate consideration may or may not be received for securities that are issuable on exercise, conversion or exchange of other securities. (4) The registrant is relying on Rule 456(b) and Rule 457(r) under the Securities Act to defer payment of all of the registration fee other than as set forth herein. In connection with the securities offered hereby for any subsequent registration fees, the registrant will pay "pay-as-you-go registration fees" in accordance with Rule 456(b). The registrant will calculate the registration fee applicable to an offer of securities pursuant to this Registration Statement based on the fee rate in effect on the date of such fee payment. See Note 1. See Note 1. See Note 1. See Note 1. The registration fee is calculated in accordance with Rule 457(o) under the Securities Act based on the proposed maximum aggregate offering price for the shares of common stock that may be issued and sold from time to time under the sales agreement prospectus contained in this registration statement. (1) Pursuant to Rule 416 under the Securities Act, the shares being registered hereunder include such indeterminate number of shares of common stock as may be issuable with respect to the shares being registered hereunder as a result of stock splits, stock dividends or similar transactions. (2) The amount registered consists of (i) 6,357,053 shares of common stock and (ii) 2,132,620 shares of common stock issuable upon the exercise of pre-funded warrants held by certain selling stockholders pursuant to the prospectus contained herein. (3) Estimated solely for the purpose of calculating the registration fee in accordance with Rule 457(c) under the Securities Act. The price per share and aggregate offering price are based on the average of the high and low prices of the registrant's common stock as reported on the Nasdaq Global Select Market on September 28, 2026, a date within five business days prior to the filing of this registration statement. true LB Pharmaceuticals Inc S-1 333-294900 2026-04-06 13643.94 Equity Common Stock, $0.0001 par value per share 4196600 156826942.00 true LB Pharmaceuticals Inc S-1 333-294900 2026-04-06 13643.94 The registrant previously filed a registration statement on Form S-1 (Registration No. 333-294900), initially filed on April 6, 2026 and initially declared effective by the Securities and Exchange Commission on April 14, 2026 (the "Prior Registration Statement"), which registered the resale of up to 4,778,491 shares of common stock (the "Resale Shares") for a proposed maximum aggregate offering price of $112,485,678.14. A fee of $15,534.27 was previously paid in connection with the registration of the Resale Shares. 4,196,600 of the Resale Shares (the "Unsold Securities") registered for resale under the Prior Registration Statement were not sold. Pursuant to Rule 457(p), a remaining fee amount of $13,643.94, representing the portion of the registration fee previously paid with respect to the Unsold Securities, is being used to offset the fee due in connection with the filing of this Registration Statement. The offering of the Unsold Securities under the Prior Registration Statement will be deemed terminated as of the time of the filing of this Registration Statement. The registrant previously filed a registration statement on Form S-1 (Registration No. 333-294900), initially filed on April 6, 2026 and initially declared effective by the Securities and Exchange Commission on April 14, 2026 (the "Prior Registration Statement"), which registered the resale of up to 4,778,491 shares of common stock (the "Resale Shares") for a proposed maximum aggregate offering price of $112,485,678.14. A fee of $15,534.27 was previously paid in connection with the registration of the Resale Shares. 4,196,600 of the Resale Shares (the "Unsold Securities") registered for resale under the Prior Registration Statement were not sold. Pursuant to Rule 457(p), a remaining fee amount of $13,643.94, representing the portion of the registration fee previously paid with respect to the Unsold Securities, is being used to offset the fee due in connection with the filing of this Registration Statement. The offering of the Unsold Securities under the Prior Registration Statement will be deemed terminated as of the time of the filing of this Registration Statement.