X0202 SCHEDULE 13D/A 0002049820-26-000005 0002049820 XXXXXXXX LIVE 3 Common Shares 04/09/2026 0001649752 66979W842 Nouveau Monde Graphite Inc.

481 rue Brassard Saint-Michel-des-Saints A8 J0K 3B0

Selin Bastin 514-937-2772 1250 Rene-Levesque Blvd. West Suite 1400 Montreal A8 H3B 5E9 David A. Bartz (615) 780-6700 K&L Gates LLP 501 Commerce Street, Suite 1500 Nashville TN 37203 0002049820 N Canada Growth Fund Inc. b WC Z4 0 39682538.00 0 39682538.00 39682538.00 22.0 CO Items 8, 10, 11, and 13 include the number of common shares, no par value per share (Common Shares), of Nouveau Monde Graphite Inc. (NMG) issuable to Canada Growth Fund Inc. (CGF) upon exercise of all Warrants held by CGF. In Item 13, the percentage is based on 180,602,808 Common Shares deemed outstanding pursuant to Rule 13d-3(d)(1) (Rule 13d-3(d)(1)) of the Securities and Exchange Act of 1934, as amended (Exchange Act), calculated as the sum of 160,761,539 Common Shares outstanding according to the Form 40-F filed by NMG with the U.S. Securities and Exchange Commission (SEC) on March 26, 2026, plus 19,841,269 Common Shares that are issuable upon exercise of Warrants held by CGF. 0002049818 N Canada Growth Fund Investment Management Inc. b WC Z4 0 39682538.00 0 39682538.00 39682538.00 22.0 CO Items 8, 10, 11, and 13 include the number of Common Shares issuable to CGF upon exercise of all Warrants held by CGF. Canada Growth Fund Investment Management Inc. (CGFIM) is the discretionary exclusive investment manager for CGF, and, therefore, CGFIM may be deemed to beneficially own the Common Shares held by CGF as discretionary exclusive investment manager for CGF. In Item 13, the percentage is based on 180,602,808 Common Shares deemed outstanding pursuant to Rule 13d-3(d)(1), calculated as the sum of 160,761,539 Common Shares outstanding according to the Form 40-F filed by NMG with the SEC on March 26, 2026, plus 19,841,269 Common Shares that are issuable upon exercise of Warrants held by CGF. Common Shares Nouveau Monde Graphite Inc. 481 rue Brassard Saint-Michel-des-Saints A8 J0K 3B0 This Amendment No. 3 to the Schedule 13D (this Amendment No. 3) amends and supplements the Schedule 13D originally filed by the Reporting Persons with the SEC on December 23, 2024 and amended on March 30, 2026 and April 6, 2026 (as amended, the Schedule 13D). Except as specifically provided herein, this Amendment No. 3 does not modify any of the information previously reported in the Schedule 13D. Capitalized terms used but not defined in this Amendment No. 3 shall have the same meanings ascribed to them in the Schedule 13D. The purchase price for the 2026 Private Placement Common Shares (as defined below) is US$81,792,526.40 in cash, and the source of funds is expected to come from the working capital of CGF. Item 4 of the Schedule 13D is hereby amended and restated in its entirety as follows: CGF entered into a subscription agreement (the Subscription Agreement), dated December 16, 2024, with NMG pursuant to which, on December 20, 2024, CGF purchased, on a private placement basis, 19,841,269 Common Shares of NMG and an additional 19,841,269 Common Shares on exercise of the Warrants, for an aggregate of 39,682,538 Common Shares, for an aggregate subscription price of US$25,000,000 (collectively, the Purchased Shares). This represents approximately 23.1% of the then-outstanding Common Shares, computed on the basis of 152,261,189 Common Shares issued and outstanding as of December 19, 2024, based on information provided by NMG and as reported in the issuers most recent 40-F and 6-K. The Purchased Shares and Warrant Shares (as defined in the Subscription Agreement) were acquired by CGF for investment purposes in the ordinary course of its business. CGF entered into a subscription agreement, dated April 9, 2026 (the April 2026 Subscription Agreement), with NMG, pursuant to which CGF agreed to purchase, on a private placement basis and subject to NMG shareholder approval, 44,452,460 Common Shares of NMG for an aggregate subscription price of US$81,792,526.40 (the 2026 Private Placement Common Shares). This investment represents approximately 27.7% of the then-outstanding Common Shares, calculated based on 160,761,539 Common Shares issued and outstanding as of December 31, 2025, as reported by NMG in its most recent Form 40-F filed with the SEC on March 26, 2026. The Reporting Persons will evaluate their investment in NMG from time to time and may at any time, based on such evaluation, market conditions and other circumstances, increase or decrease their security holdings in NMG or may change their investment strategy as regards to NMG. The Common Shares are listed on the TSX Venture Exchange and the New York Stock Exchange. The Reporting Persons intend to monitor and evaluate the investment on an ongoing basis and expect regularly to review and consider alternative ways of maximizing its return on such investment, depending on prevailing market conditions, other investment opportunities, liquidity requirements or other investment considerations the Reporting Persons deem relevant. The Reporting Persons may engage in discussions with management, the board of directors of NMG, other shareholders of NMG and other relevant parties concerning the business, operations, board composition, management, strategy and future plans of NMG only to the extent such discussions do not create a "group" within the meaning of Section 13(d)(3) of the Exchange Act. The Reporting Persons may exchange information with any such persons pursuant to appropriate confidentiality or similar agreements and in compliance with applicable securities laws. The Reporting Persons may from time to time in the future seek to acquire, alone or in conjunction with others, additional Common Shares or other securities issued by NMG through open market purchases, block trades, privately negotiated transactions, tender offer, merger, reorganization or otherwise. The Reporting Persons may also dispose of all or a portion of the securities of NMG, in open market or privately negotiated transactions, and/or enter into derivative transactions with institutional counterparties with respect to the Common Shares, in each case, subject to limitations under applicable law and any other required approvals. Under the terms of the Investor Rights Agreement, CGF will have certain information and access rights to books and records. CGF has the right to appoint one member of the board and one board observer. CGF has appointed one board observer and intends to nominate one director candidate to stand for election at NMG's 2026 annual general meeting of shareholders. Except as described in this Amendment No. 3, the Reporting Persons do not have any present plans or proposals that relate to or would result in any of the actions described in subparagraphs (a) through (j) of Item 4 of Schedule 13D, although the Reporting Persons, at any time and from time to time, may review, reconsider and change its position and/or change its purpose and/or develop such plans and may seek to influence management or the Board with respect to the business and affairs of NMG and may from time to time consider pursuing or proposing such matters with advisors, NMG or other persons. Item 6 of the Schedule 13D is hereby supplemented to add the following: April 2026 Subscription Agreement: The information set forth in Item 4 hereof is incorporated herein by reference. This description is a summary only and is qualified in its entirety by the terms of the April 2026 Subscription Agreement, which is filed as Exhibit 1 to this Amendment No. 3, and is incorporated herein by reference. Exhibit 1 -- Subscription Agreement, dated as of April 9, 2026, by and between CGF and NMG.* * Schedules and exhibits have been omitted pursuant to Item 601(a)(5) of Regulation S-K. The Reporting Persons agree to furnish supplementally to the SEC a copy of any omitted schedule or exhibit upon request. Canada Growth Fund Inc. /s/ Selin Bastin 04/13/2026 /s/ Yannick Beaudoin 04/13/2026 Canada Growth Fund Investment Management Inc. /s/ Selin Bastin 04/13/2026 /s/ Yannick Beaudoin 04/13/2026