Aecon Group Inc. — Capital/Financing Update 2023

Jun 12, 2023

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Ontario Commission des 22nd Floor 22e étage Securities valeurs mobilières 20 Queen Street West 20, rue Queen ouest Commission de l’Ontario Toronto ON M5H 3S8 Toronto ON M5H 3S8

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----- Start of picture text ----- RECEIPTAecon Group Inc.----- End of picture text -----

This is the receipt of the Ontario Securities Commission for the Base Shelf Prospectus of the above Issuer dated June 9, 2023 (the prospectus).

The prospectus has been filed under Multilateral Instrument 11-102 Passport System in British Columbia, Alberta, Saskatchewan, Manitoba, Quebec, New Brunswick, Nova Scotia, Prince Edward Island and Newfoundland and Labrador . A receipt for the prospectus is deemed to be issued by the regulator in each of those jurisdictions, if the conditions of the Instrument have been satisfied.

June 12, 2023

Winnie Sanjoto Winnie Sanjoto Director, Corporate Finance Branch

SEDAR Project # 3548951