An anonymous director reports

PYROGENESIS SCHEDULES 2026 THIRD QUARTER FINANCIAL RESULTS AND BUSINESS UPDATE CONFERENCE CALL

PyroGenesis Inc. will host a conference call at 11 a.m. Eastern Time on Friday, Nov. 13, 2026, to discuss the company's financial results for the third quarter ended Sept. 30, 2026, as well as to provide an update to the company's progress and other developments. To access the conference call by telephone, please preregister on-line.

Registrants will receive confirmation with dial-in details. A live webcast of the conference call will be available. The webcast will be available on the investor relations section of the company's website in the days following the conference call.

Beginning in 2027, the company will hold live earnings calls twice annually, in conjunction with the release of its second quarter (Q2) and year-end financial results, expected around Aug. 15 and March 30, respectively. This change will not affect the company's financial reporting obligations, and the company will continue to publish its quarterly and annual financial results in accordance with applicable regulatory requirements.

The revised schedule is intended to allow the company to focus on making its investor communications more substantive, valuable and engaging. By concentrating its live discussions around the Q2 and year-end results, the company expects to provide more in-depth commentary on its financial performance, business strategy and outlook, while creating greater opportunities for meaningful engagement with investors and analysts. These calls may also include expanded opportunities for questions and discussion. The revised schedule is also consistent with the company's continuing efforts to manage expenses and operate efficiently. Earnings calls are a voluntary practice for publicly traded companies and are not mandated by securities regulations. The company may reinstitute quarterly calls at any time and may also provide alternative communications during periods when no calls are scheduled, including chief executive officer video updates or presentations.

About PyroGenesis Inc.

PyroGenesis leverages 35 years of plasma technology leadership to deliver advanced engineering solutions to energy, propulsion, destruction, process heating, emissions and materials development challenges across heavy industry and defence. Its customers include global leaders in aluminum, aerospace, steel, iron ore, utilities, environmental services, military and government. From its Montreal headquarters and local manufacturing facilities, PyroGenesis's engineers, scientists and technicians drive innovation and commercialization of energy transition and ultrahigh-temperature technology. PyroGenesis's operations are ISO 9001:2015 and AS9100D certified, with ISO certification maintained since 1997. PyroGenesis's shares trade on the Toronto Stock Exchange, OTCQX and Frankfurt Stock Exchange.

We seek Safe Harbor.