Company: HCWB
Filing Date: 2025-02-11
Form Type: PRE 14A
Source: 0001193125-25-024372
Chunk: 11

Company: HCW Biologics Inc.
Filing Date: 2025-02-11
Form: PRE 14A
Chunk 11
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 proxy bearing a later date (which automatically revokes the earlier proxy) using any of the 
 methods described above (and until the applicable deadline for each method);                               |

| • |     | providing a written notice of revocation to HCW Biologics’ Secretary at HCW Biologics Inc., 2929 N. Commerce 
 Parkway, Miramar, Florida 33025, prior to your shares being voted, or                                        |

| • |     | participating in the Special Meeting and voting electronically online at                                                                                                                                      
 www.virtualshareholdermeeting.com/HCWB2025SM. Participation alone at the Special Meeting will not cause your previously granted proxy to be revoked unless you specifically vote during the meeting online at 
 www.virtualshareholdermeeting.com/HCWB2025SM.                                                                                                                                                                 |

Please note, however, that if your shares are held of record by a broker, bank or other nominee and you wish to revoke a proxy, you must contact that firm to revoke any prior voting instructions.

| Q: | How can I participate in the virtual Special Meeting? |

| A: | There is no physical location for the Special Meeting. Stockholders of record as of the close of business on                                                                                                             
 the Record Date are entitled to participate virtually in the Special Meeting, including to vote, ask questions and view the list of registered stockholders as of the record date during the Special Meeting by visiting 
 www.virtualshareholdermeeting.com/HCWB2025SM. To participate and vote in the Special Meeting, you will need the control number included on your proxy card or voting instruction form.                                   |

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We are committed to ensuring, to the extent possible, that stockholders will be given the same participation rights that they would be given if they attended an in-personmeeting. We will endeavor to answer as many stockholder-submitted questions as time permits that comply with the Special Meeting rules of conduct. We reserve the right to edit profanity or other inappropriate language and to exclude questions regarding topics that are not pertinent to meeting matters or Company business. If we receive substantially similar questions, we may group such questions together and provide a single response to avoid repetition. The meeting webcast will begin promptly at 10:00 a.m., Eastern Time. Online check-inwill begin at 9:45 a.m., Eastern Time, and we encourage you to allow ample time for check-inprocedures. If you experience technical difficulties during the check-inprocess or during the meeting, please call the technical support number provided on the log-inpage of