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NMG Announces Pricing of US$20 Million Public Equity Offering BASE SHELF PROSPECTUS IS ACCESSIBLE, AND THE SHELF PROSPECTUS SUPPLEMENT WILL BE ACCESSIBLE WITHIN TWO BUSINESS DAYS ON SEDAR+

Financings

PRESS RELEASE

For immediate release

NMG Announces Pricing of US$20 Million Public Equity Offering

BASE SHELF PROSPECTUS IS ACCESSIBLE, AND THE SHELF PROSPECTUS SUPPLEMENT

WILL BE ACCESSIBLE WITHIN TWO BUSINESS DAYS ON SEDAR+

MONTRÉAL, CANADA, December 18, 2025 – Nouveau Monde Graphite Inc. (“NMG” or the

“Company”) ( NYSE: NMG , TSX: NOU ) announces the pricing of a public equity offering of

8,333,334 common shares of the Company (“Shares”) at a price of US$ 2.40 per Share for gross

proceeds of US$20 millions (the “Offering”).

Maxim Group LLC is acting as sole placement agent for the Offering.

The Company intends to use the net proceeds from the Offering for procurement of long -lead

equipment, to initiate certain construction activities, and to cover detailed engineering and

indirect costs for the Matawinie Mine project, to fund engineering acti vities to deliver an AACE

class 3 estimate for the 13ktpy Bécancour Battery Material Plant project, and to fund general

working capital and corporate expenditures.

The Common Shares to be offered under the Offering will be offered solely in the United States

pursuant to a supplement to the Company’s registration statement on Form F-10 registering the

Common Shares under the United States Securities Act of 1933, as amended, (the “U.S. Securities

Act”) pursuant to the Multi -Jurisdictional Disclosure System adopted by the United States and

Canada (the “MJDS”). No shares will be offered or sold in Canada.

In connection with the Offering, the Company has filed a preliminary prospectus supplement (the

“Preliminary Prospectus Supplement”) and will file a final prospectus supplement (the “Final

Prospectus Supplement”) to the Company’s existing short form base s helf prospectus dated

December 5, 2025 filed in Canada (the “Base Shelf Prospectus”) and the Company’s United States

registration statement on Form F-10 (the “Registration Statement”) filed with the U.S. Securities

and Exchange Commission (the “SEC”) under the U.S. Securities Act, pursuant to the MJDS. The

Preliminary Prospectus Supplement, the Final Prospectus Supplement, the Base Shelf Prospectus

and the Registration Statement contain important information about the Company and the

Offering. Prospective i nvestors should read the Preliminary Prospectus Supplement, the Final

Prospectus Supplement, the Base Shelf Prospectus and the Registration Statement and the

documents incorporated by reference therein before making an investment decision. Delivery of

the Preliminary Prospectus Supplement, the Final Prospectus Supplement, and any amendments

to the documents will be provided in accordance with securities legislation relating to procedures

for providing access to a shelf prospectus supplement, and any amendment. The Final Prospectus

Supplement when filed in Canada (together with the related Base Shelf Prospectus) will be

available on SEDAR+ at www.sedarplus.ca within two business days. The Final Prospectus

Supplement when filed in the United States (together with the Registration Statement) will be

available on the SEC’s website at www.sec.gov. Copies of the Preliminary Prospectus Supplement

and accompanying prospectus may be obtained by contacting Maxim Group LLC, at 300 Park

Avenue, 16th Floor, New York, NY 10022, Attention: Syndicate Department, or by telephone at

(212) 895-3745 or by email at [email protected]. The Preliminary Prospectus Supplement

contains important, detailed information about the Company and the proposed Offering.

Prospective investors should read the Prospectus Supplement (when filed) before making an

investment decision.

T h e O ff e r i n g i s e x p e c t e d t o c l o s e o n o r a b o u t D e c e m b e r 1 9 , 2 0 2 5, subject to a number of

customary closing conditions, including NMG receiving all necessary regulatory approvals and the

a p p r o v a l o f t h e T o r o n t o S t o c k E x c h a n g e a n d t h e N e w Y o r k S t o c k E x c h a n g e . T h e r e c a n b e n o

assurance as to whether the Offering will be completed.

This press release does not constitute an offer to sell or the solicitation of an offer to buy securities,

nor will there be any sale of the securities in any province, state or jurisdiction in which such offer,

solicitation or sale would be unlawful prior to the registration or qualification under the securities

laws of any such province, state or jurisdiction. The securities being offered and the contents of

this press release have not been approved or disapproved by any regulatory authority, nor has any

such authority passed upon the accuracy or adequacy of the Preliminary Prospectus Supplement,

the Final Prospectus Supplement, the Base Shelf Prospectus or the Registration Statement.

About Nouveau Monde Graphite

Nouveau Monde Graphite is an integrated company developing responsible mining and advanced

processing operations to supply the global economy with carbon -neutral advanced graphite

materials. The Company is developing in Québec, Canada , a fully integrated ore-to-processed-

graphite value chain to serve tomorrow’s industries in energy, defense, technology, and

manufacturing. With recognized ESG standards and structuring partnerships with major

customers, NMG is set to become a strategic supplier of advanced materials to leading specialized

manufacturers while promoting sustainability , innovation, and supply chain traceability.

www.NMG.com

Contact

MEDIA INVESTORS

Julie Paquet

VP Communications & ESG Strategy

+1-450-757-8905 #140

[email protected]

Marc Jasmin

Director, Investor Relations

+1-450-757-8905 #993

[email protected]

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Cautionary Note Regarding Forward-Looking Information

This press release contains “forward -looking information” and “forward- looking statements” within the

meaning of applicable securities legislation (collectively, “forward- looking statements”), including, but not

limited to, statements relating to future events or future financial or operating performance of the Company

and reflect management’s expectations and assumptions regarding the Company’s growth, results,

performance and business prospects and opportunities. Such forward- looking statements reflect

management’s current beliefs and are based on information currently available to it. These forward-looking

statements include, but are not limited to, the information concerning the Offering, including the

jurisdictions in which the Shares will be offered, the anticipated offering size, the completion of the Offering

on the timeline indicated, or at all; the anticipated use of the net proceeds from the Offering, the receipt of

all necessary approvals, and the expected results of the initiatives described in this press release, and those

statements which are discussed under the “About Nouveau Monde” paragraph and elsewhere in the press

release which essentially describe the Company’s outlook and objectives.

Forward-looking statements are based upon a number of estimates and assumptions that, while considered

reasonable by the Company as of the time of such statements, are inherently subject to significant business,

economic and competitive uncertainties that may cause the actual results, level of activity, performance, or

achievement of the Company to be materially different from those expressed or implied by such

forward-looking statements.

Forward-looking statements are subject to known or unknown risks and uncertainties that may cause actual

results to differ materially from those anticipated or implied in the forward-looking statements. Risk factors

that could cause actual results or event s to differ materially from current expectations include, among

others, availability financing or financing on favorable terms for the Company, delays in finalizing the

definitive agreements, delays in reaching FID, and general economic conditions, as well as earnings, capital

expenditure, cash flow and capital structure risks and general business risks. A further description of risks

and uncertainties can be found in NMG’s Annual Information Form dated March 31, 2025, including in the

section thereof captioned “Risk Factors”, which is available on SEDAR+ at www.sedarplus.ca and on EDGAR

at www.sec.gov. Unpredictable or unknown factors not discussed in this Cautionary Note could also have

material adverse effects on forward-looking statements.

Many of these uncertainties and contingencies can directly or indirectly affect, and could cause, actual

results to differ materially from those expressed or implied in any forward-looking statements. There can be

no assurance that forward-looking statements will prove to be accurate, as actual results and future events

could differ materially from those anticipated in such statements. Forward-looking statements are provided

for the purpose of providing information about management’s expectations and plans relating to the future.

The Company disclaims any intention or obligation to update or revise any forward -looking statements or

to explain any material difference between subsequent actual events and such forward-looking statements,

except to the extent required by applicable law.

Further information regarding the Company is available in the SEDAR+ database (www.sedarplus.ca), and

for United States readers on EDGAR (www.sec.gov), and on the Company’s website at: www.NMG.com .