Ms. Rodayna Kafal reports

PYROGENESIS SCHEDULES FIRST QUARTER 2023 FINANCIAL RESULTS AND BUSINESS UPDATE CONFERENCE CALL

PyroGenesis Canada Inc. will host a conference call at 10 a.m. Eastern Time on Tuesday, May 16, 2023, to discuss the company's financial results for the first quarter of 2023, which ended March 31, 2023, as well as the company's corporate progress and other developments.

A live webcast of the conference call will be available on the investor relations section of the company's website.

Any inquiries can be submitted ahead of time by sending an e-mail to PyroGenesis's investor relations at ir@pyrogenesis.com, with the management team making every effort to address them during the conference call.

About PyroGenesis Canada Inc.

PyroGenesis Canada, a high-technology company, is a proud leader in the design, development, manufacture and commercialization of advanced plasma processes and sustainable solutions that reduce greenhouse gases (GHGs) and are economically attractive alternatives to conventional dirty processes. PyroGenesis has created proprietary, patented and advanced plasma technologies that are being vetted and adopted by industry leaders in four massive markets: iron ore pelletization, aluminum, waste management and additive manufacturing. With a team of experienced engineers, scientists and technicians working out of its Montreal office and its 3,800-square-metre and 2,940-square-metre manufacturing facilities, PyroGenesis maintains its competitive advantage by remaining at the forefront of technology development and commercialization. The operations of PyroGenesis are ISO 9001:2015 and AS9100D certified, having been ISO certified since 1997.