EX-32.1 4 eldn-ex32_1.htm EX-32.1

Exhibit 32.1

CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report on Form 10-Q of Eledon Pharmaceuticals, Inc. (the “Company”) for the period ended September 30, 2025 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), the undersigned, David-Alexandre C. Gros, M.D., Chief Executive Officer of the Company, hereby certifies, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that to the best of his knowledge:

(1) the Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of
1934; and

(2) the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Date: November 14, 2025 |  | By: |  | /s/ David-Alexandre C. Gros, M.D.
|  |  |  | David-Alexandre C. Gros, M.D.
|  |  |  | Chief Executive Officer (Principal Executive Officer)