Company: INMB
Filing Date: 2025-05-09
Form Type: DEFR14A
Source: 0001213900-25-041516
Chunk: 1

Company: Inmune Bio, Inc.
Filing Date: 2025-05-09
Form: DEFR14A
Chunk 1
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, to reflect the substitution of CBIZ CPAs, to submit their appointment for stockholder ratification,
to make certain technical amendments related to this change, and to revise the date of the 2025 annual meeting of stockholders (the “Meeting”)
from May 28, 2025 to June 10, 2025. The record date of April 14, 2025, remains unchanged.

All votes received on proposals for consideration
at the Meeting, including Proposal No. 2, prior to the filing and mailing of this Amendment No. 1, shall continue to be counted. Therefore,
if you have already voted your shares, you do not need to vote again unless you would like to change or revoke your prior vote. If you
have already voted and wish to change your vote, you may revoke your original proxy and submit a new proxy by completing, dating, signing
and returning the enclosed proxy, or submitting a new proxy through the internet or by telephone.

If you are a stockholder in “street”
or “nominee” name, you may revoke your voting instructions and submit new voting instructions by informing the bank, broker
or other nominee in accordance with that entity’s procedures for revoking your voting instructions and issuing new instructions.
For additional information regarding revoking your proxy, please refer to page 5 of the Original Definitive Proxy Statement.

Your vote is important to us. We appreciate your attention to this
matter.

Sincerely,

| /s/ David Moss                        |
| David Moss                            |
| Chief Financial Officer and Secretary |
| May 9, 2025                           |

<div align='center'>EXPLANATORY NOTE</div>

Effective May 7, 2025, the Audit Committee of
the Board of Directors of INmune Bio Inc. (the “Audit Committee” and the “Company” or “INmune,” respectively)
notified Marcum LLP that Marcum LLP was dismissed as the Company’s independent registered public accounting firm, not as a result
of any disagreement on any matter of accounting principles or practices, financial statement disclosure, or audit scope or procedure.
As of May 7, 2025, the Audit Committee appointed CBIZ CPAs P.C. (“CBIZ CPAs”) as the Company’s independent registered
public accounting firm for the fiscal year ending December 31, 2025, effective immediately. The Company filed a Current Report on Form
8-K with the U.S. Securities and Exchange Commission (the “SEC”)