SCHEDULE 13G 0000927971 XXXXXXXX LIVE Common Shares 05/31/2025 0001368519 North American Construction Group Ltd. 656811106 27287 100 AVENUE ACHESON A0 T7X 6H8 Rule 13d-1(b) Bank of Montreal Z4 2295144 998106 2295144 998106 3293250 N 10.73 HC BANK OF MONTREAL HOLDING INC. Z4 2295144 998106 2295144 998106 3293250 N 10.73 BK BMO NESBITT BURNS INC. WEALTH MANAGEMENT Z4 2293293 0 2293293 0 2293293 N 7.47 BD BMO ASSET MANAGEMENT INC. A6 1912019 0 1912019 0 1912019 N 6.23 IA BMO NESBITT BURNS INC. Z4 1851 998106 1851 998106 999958 N 3.25 BD 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. WEALTH MANAGEMENT BMO ASSET MANAGEMENT INC. BMO NESBITT BURNS 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. WEALTH MANAGEMENT - CANADA (FEDERAL LEVEL) BMO ASSET MANAGEMENT INC. - ONTARIO, CANADA BMO NESBITT BURNS INC. - CANADA (FEDERAL LEVEL) N BD BK IA HC 3,293,250 10.73 Bank of Montreal - 2,295,144 BANK OF MONTREAL HOLDING INC. - 2,295,144 BMO NESBITT BURNS INC. WEALTH MANAGEMENT - 2,293,293 BMO ASSET MANAGEMENT INC. - 1,912,019 BMO NESBITT BURNS INC. - 1,851 Bank of Montreal - 998,106 BANK OF MONTREAL HOLDING INC. - 998,106 BMO NESBITT BURNS INC. WEALTH MANAGEMENT - 0 BMO ASSET MANAGEMENT INC. - 0 BMO NESBITT BURNS INC. - 998,106 Bank of Montreal - 2,295,144 BANK OF MONTREAL HOLDING INC. - 2,295,144 BMO NESBITT BURNS INC. WEALTH MANAGEMENT - 2,293,293 BMO ASSET MANAGEMENT INC. - 1,912,019 BMO NESBITT BURNS INC. - 1,851 Bank of Montreal - 998,106 BANK OF MONTREAL HOLDING INC. - 998,106 BMO NESBITT BURNS INC. WEALTH MANAGEMENT - 0 BMO ASSET MANAGEMENT INC. - 0 BMO NESBITT BURNS INC. - 998,106 Y Y 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 06/06/2025 BANK OF MONTREAL HOLDING INC. Kathryn Cenac 06/06/2025 BMO NESBITT BURNS INC. WEALTH MANAGEMENT Kathryn Cenac 06/06/2025 BMO ASSET MANAGEMENT INC. Kathryn Cenac 06/06/2025 BMO NESBITT BURNS INC. Kathryn Cenac 06/06/2025