MATR MATTR Corporation

Mattr Corp. (“Mattr” or the “Company”) (TSX: MATR), today announced Mike Reeves, President & CEO and Tom Holloway, SVP Finance & CFO will present at the Midwest IDEAS Investor Conference on Wednesday August 28, 2024 at The Gwen in Chicago, IL. Mattr’s presentation is scheduled to begin at 11:30am CT. The presentation is webcast and can be accessed through the conference host’s main website: https://www.threepartadvisors.com/midwest and in the investor relations section of the company's website: http://www.mattr.com.

About IDEAS Investor Conferences

The mission of the IDEAS Conferences is to provide independent regional venues for quality companies to present their investment merits to an influential audience of investment professionals. Unlike traditional bank-sponsored events, IDEAS Investor Conferences are “SPONSORED BY INVESTORS. FOR INVESTORS.” and for the benefit of regional investment communities. Conference sponsors collectively have more than $200 billion in assets under management and include: 1102 Partners, Adirondack Research and Management, Allianz Global Investors: NFJ Investment Group, Ariel Investments, Aristotle Capital Boston, Ascend Wealth Advisors, Barrow Hanley Mewhinney & Strauss, BMO Global Asset Management, Constitution Research & Management, Inc., Diamond Hill, First Wilshire Securities Management, Inc., Granahan Investment Management, Great Lakes Advisors, Greenbrier Partners Capital Management, LLC, Hodges Capital Management, Ironwood Investment Management, Keeley Teton Advisors, Luther King Capital Management, Marble Harbor Investment Counsel, North Star Investment Management, Perritt Capital Management, Punch & Associates, Shepherd Kaplan Krochuk, Westwood Holdings Group, Inc., and William Harris Investors.

The IDEAS Investor Conferences are held annually and are produced by Three Part Advisors, LLC. Additional information about the events can be located at www.IDEASconferences.com.

If interested in participating or learning more about the IDEAS conferences, please contact Lacey Wesley at (817) 769 -2373 or lWesley@IDEASconferences.com.

About Mattr

Mattr is a growth-oriented, global materials technology company broadly serving critical infrastructure markets, including transportation, communication, water management, energy and electrification. The Company operates through a network of fixed manufacturing facilities. Its two business segments, Composite Technologies and Connection Technologies, enable responsible renewal and enhancement of critical infrastructure while lowering risk.

For further information, please contact:

Meghan MacEachernVP, External Communications & ESGTelephone: 437.341.1848Email: meghan.maceachern@mattr.comWebsite: www.mattr.com

Source: Mattr Corp.