Company: HCWB
Filing Date: 2025-05-13
Form Type: S-1/A
Source: 0001193125-25-118837
Chunk: 3

Company: HCW Biologics Inc.
Filing Date: 2025-05-13
Form: S-1/A
Chunk 3
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Pursuant to the requirements of the Securities Exchange Act of 1933, the registrant has duly caused this registration statement on Form S-1to be signed on its behalf by the undersigned, thereunto duly authorized.

| Signature            
 /s/ Scott T. Garrett 
 Scott T. Garrett     
 /s/ Rebecca Byam     
 Rebecca Byam         |     | Title                              
 Chairman of the Board of Directors 
 Chief Financial Officer            |     | Date         
 May 13, 2025 
 May 13, 2025 |
|:---------------------|:----|:-----------------------------------|:----|:-------------|
| /s/ Hing C. Wong     
 Hing C. Wong         |     | Chief Executive Officer            |     | May 13, 2025 |
| /s/ Rick S. Greene   
 Rick S. Greene       |     | Director                           |     | May 13, 2025 |
| /s/ Lisa M. Giles    
 Lisa M. Giles        |     | Director                           |     | May 13, 2025 |
| /s/ Gary M. Winer    
 Gary M. Winer        |     | Director                           |     | May 13, 2025 |

| By: |     | /s/ Hing C. Wong               |
|     |     | Hing C. Wong, Attorney-in-Fact |