X0202 SCHEDULE 13G/A 0001085146-25-003443 0000927971 XXXXXXXX LIVE 2 Common Shares 06/30/2026 0001368519 North American Construction Group Ltd. 656811106 27287 100 AVENUE ACHESON A0 T7X 6H8 Rule 13d-1(b) Bank of Montreal Z4 1419508 6100 1420258 6100 1426358 N 5.05 HC BANK OF MONTREAL HOLDING INC. Z4 1419508 6100 1420258 6100 1426358 N 5.05 BK BMO NESBITT BURNS INC. Z4 1419508 6100 1420258 6100 1426358 N 5.05 BK BMO ASSET MANAGEMENT INC. A6 1413984 0 1413984 0 1413984 N 5.01 IA North American Construction Group Ltd. 27287 100 AVENUE, ACHESON, ALBERTA, CANADA T7X 6H8 Bank of Montreal BANK OF MONTREAL HOLDING INC. BMO NESBITT BURNS INC. BMO ASSET MANAGEMENT INC. 1 First Canadian Place Toronto, Ontario, Canada M5X1A1 Bank of Montreal - CANADA (FEDERAL LEVEL) BANK OF MONTREAL HOLDING INC. - CANADA (FEDERAL LEVEL) BMO NESBITT BURNS INC. - CANADA (FEDERAL LEVEL) BMO ASSET MANAGEMENT INC. - ONTARIO, CANADA N BD BK IA HC 1,426,358 5.05 Bank of Montreal - 1,419,508 BANK OF MONTREAL HOLDING INC. - 1,419,508 BMO NESBITT BURNS INC. - 1,419,508 BMO ASSET MANAGEMENT INC. - 1,413,984 Bank of Montreal - 6,100 BANK OF MONTREAL HOLDING INC. - 6,100 BMO NESBITT BURNS INC. - 6,100 BMO ASSET MANAGEMENT INC. - 0 Bank of Montreal - 1,420,258 BANK OF MONTREAL HOLDING INC. - 1,420,258 BMO NESBITT BURNS INC. - 1,420,258 BMO ASSET MANAGEMENT INC. - 1,413,984 Bank of Montreal - 6,100 BANK OF MONTREAL HOLDING INC. - 6,100 BMO NESBITT BURNS INC. - 6,100 BMO ASSET MANAGEMENT INC. - 0 Y N Certain of the securities reported herein are held in the ordinary course of business of the Reporting Person acting as prime broker on behalf of certain clients who have the power to direct the receipt of dividends from, or the proceeds from the sale of such securities. N See Documents N Each reporting person may be deemed to be a member of a group with respect to the issuer or securities of the issuer for the purposes of Section 13(d) or 13(g) of the Act. Each reporting person declares that neither the filing of this statement nor anything herein shall be construed as an admission that such person is, for the purposes of Section13(d) or 13(g) of the Act or any other purpose, (i) acting (or has agreed or is agreeing to act) with any other person as a partnership, limited partnership, syndicate, or other group for the purpose of acquiring, holding, or disposing of securities of the issuer or otherwise with respect to the issuer or any securities of the issuer or (ii) a member of any syndicate or group with respect to the issuer or any securities of the issuer. N Each reporting person may be deemed to be a member of a group with respect to the issuer or securities of the issuer for the purposes of Section 13(d) or 13(g) of the Act. Each reporting person declares that neither the filing of this statement nor anything herein shall be construed as an admission that such person is, for the purposes of Section13(d) or 13(g) of the Act or any other purpose, (i) acting (or has agreed or is agreeing to act) with any other person as a partnership, limited partnership, syndicate, or other group for the purpose of acquiring, holding, or disposing of securities of the issuer or otherwise with respect to the issuer or any securities of the issuer or (ii) a member of any syndicate or group with respect to the issuer or any securities of the issuer. N By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under § 240.14a-11. Bank of Montreal Kathryn Cenac 08/12/2026 BANK OF MONTREAL HOLDING INC. Kathryn Cenac 08/12/2026 BMO NESBITT BURNS INC. Kathryn Cenac 08/12/2026 BMO ASSET MANAGEMENT INC. Kathryn Cenac 08/12/2026