0001193125-26-322208 Sample Contracts

SECURITIES PURCHASE AGREEMENT
Securities Purchase Agreement • July 29th, 2026 • Lb Pharmaceuticals Inc • Pharmaceutical preparations • Delaware

This SECURITIES PURCHASE AGREEMENT (this “Agreement”) is dated as of July 28, 2026, by and among LB Pharmaceuticals Inc, a Delaware corporation (the “Company”), and each of the entities listed on Exhibit A attached to this Agreement (each, an “Investor” and together, the “Investors”).

REGISTRATION RIGHTS AGREEMENT
Registration Rights Agreement • July 29th, 2026 • Lb Pharmaceuticals Inc • Pharmaceutical preparations

THIS REGISTRATION RIGHTS AGREEMENT (this “Agreement”), dated as of July 28, 2026, is entered into by and among LB Pharmaceuticals Inc, a Delaware corporation (the “Company”), and the several investors signatory hereto (individually as an “Investor” and collectively together with their respective permitted assigns, the “Investors”). Capitalized terms used herein and not otherwise defined herein shall have the respective meanings set forth in the Securities Purchase Agreement by and among the parties hereto, dated as of the date hereof (as amended, restated, supplemented or otherwise modified from time to time, the “Purchase Agreement”).

FORM OF PRE-FUNDED WARRANT TO PURCHASE COMMON STOCK
Warrant Agreement • July 29th, 2026 • Lb Pharmaceuticals Inc • Pharmaceutical preparations • New York

This Warrant is one of a series of similar warrants issued pursuant to that certain Securities Purchase Agreement, dated July 28, 2026, by and among the Company and the Investors identified therein (the “Purchase Agreement”).