Company: LBRX
Filing Date: 2025-09-11
Form Type: S-8
Source: 0001193125-25-200401
Chunk: 5

Company: LB PHARMACEUTICALS INC
Filing Date: 2025-09-11
Form: S-8
Chunk 5
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 for him or her and in his or her name, place or stead, in any and all capacities, to sign any and all amendments to this registration statement (including post-effective amendments), and to file the same, with exhibits thereto and other documents in connection therewith, with the Securities and Exchange Commission, granting unto said attorney-in-factand agents, and each of them, full power and authority to do and perform each and every act and thing requisite and necessary to be done in and about the premises, as fully to all intents and purposes as he or she might or could do in person, hereby ratifying and confirming all that said attorney-in-factand agents, or their or his substitute or substitutes, may lawfully do or cause to be done by virtue hereof. Pursuant to the requirements of the Securities Act of 1933, as amended, this registration statement has been signed by the following persons in the capacities and on the dates indicated.

| Signature            
 /s/ Heather Turner   
 Heather Turner       
 /s/ Marc Panoff      
 Marc Panoff          |     | Title                                        
 Chief Executive Officer and Director         
 (Principal Executive Officer)                
 Senior Vice President, Finance               
 (Principal Financial and Accounting Officer) |     | Date               
 September 10, 2025 
 September 10, 2025 |
|:---------------------|:----|:---------------------------------------------|:----|:-------------------|
| /s/ Scott Garland    
 Scott Garland        |     | Chairman of the Board of Directors           |     | September 10, 2025 |
| /s/ Rajul Jain, M.D. 
 Rajul Jain, M.D.     |     | Director                                     |     | September 10, 2025 |
| /s/ Rebecca Luse     
 Rebecca Luse         |     | Director                                     |     | September 10, 2025 |
| /s/ Ran Nussbaum     
 Ran Nussbaum         |     | Director                                     |     | September 10, 2025 |

| /s/ Zachary Prensky                                                
 Zachary Prensky                                                    
 /s/ Robert R. Ruffolo, Jr., Ph.D., D.Sc. (h), D.Eng. (h), F.C.P.P. 
 Robert R. Ruffolo, Jr., Ph.D., D.Sc. (h), D.Eng. (h), F.C.P.P.     |     | Director 
 Director |     | September 10, 2025 
 September