Company: LBRX
Filing Date: 2025-09-08
Form Type: S-1/A
Source: 0001193125-25-197877
Chunk: 339

Company: LB PHARMACEUTICALS INC
Filing Date: 2025-09-08
Form: S-1/A
Chunk 339
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 in the open market following its effective date, subject to Rule 144 volume limitations and the lock-up agreementsdescribed below, if applicable. Lock-UpAgreements and Market-Standoff Agreements We, our directors, our executive officers, and the holders of substantially all of our common stock or securities convertible into, exercisable for, or exchangeable for our common stock have entered into lock-upagreements and/or agreements containing market stand-offprovisions imposing restrictions on our ability and the ability of such security holders to offer, sell, or transfer such securities for a period of 180 days following the date of this prospectus. The lock-upagreements pertaining to this offering provide that for a period of 180 days after the date of this prospectus, except with the prior written consent of Leerink Partners LLC, Piper Sandler & Co., and Stifel, Nicolaus & Company, Incorporated and subject to specified exceptions, we and they will not offer, pledge, sell, contract to sell, sell any option or contract to purchase, purchase any option or contract to sell, grant any option, right or warrant for the sale of, or otherwise dispose of or transfer, any shares of common stock or any securities convertible into or exercisable or exchangeable for shares of common stock, or enter into any swap or other arrangement that transfers to another, in whole or in part, directly or indirectly, any of the economic consequences of ownership of the common stock. 226

Our investors’ rights agreement and our standard form option agreement contain market stand-off provisions imposing restrictions on the ability of such security holders to offer, sell or transfer our equity securities for a period of 180 days following the date of this prospectus.

Registration Rights

Upon the closing of
this offering, certain holders of our common stock will have rights, subject to certain conditions, to require us to file registration statements covering their shares or to include their shares in registration statements that we may file for
ourselves. After registration pursuant to these rights, these shares will become freely tradable without restriction under the Securities Act. See the section titled “Description of Capital Stock—Registration Rights” for additional
information regarding these registration rights.

227

MATERIAL U.S. FEDERAL INCOME TAX CONSEQUENCES TO NON-U.S.HOLDERS The following is a summary of the material U.S. federal income tax consequences to non-U.S.holders (as defined below) of the ownership and disposition of our common stock issued pursuant to this offering. This discussion is not a complete