Exhibit 5
JOINT FILING AGREEMENT
In accordance with Rule 13d-1(k) under the Securities Exchange Act of 1934, as amended, the persons named below agree to the joint filing
on behalf of each of them of a statement on Schedule 13D (including amendments thereto) with respect to the Common Shares, no par value
of Nouveau Monde Graphite Inc., and further agree that this Joint Filing Agreement be included as an Exhibit to such joint filing. In
evidence thereof, the undersigned hereby execute this Agreement.
Dated: May 18, 2026
| Eni S.p.A. | ||
| /s/ Giulia Saba | ||
| Name: Giulia Saba | ||
| Title: Head of Company Secretariat | ||
| Eni International B.V. | ||
| /s/ Paolo Conte | ||
| Name: Paolo Conte | ||
| Title: Head of Corporate Affairs | ||