Ms. Catherine Kee reports

TMX GROUP LIMITED DECLARES DIVIDEND OF $0.20 PER COMMON SHARE

The board of directors of TMX Group Ltd. has declared a dividend of 20 cents on each common share outstanding. This dividend is payable on June 6, 2025, to shareholders of record at the close of business on May 23, 2025.

TMX Group hereby advises that this dividend is designated as an eligible dividend for Canadian income tax purposes.

About TMX Group Ltd.

TMX Group operates global markets, and builds digital communities and analytic solutions that facilitate the financing, growth and success of businesses, traders and investors. TMX Group's key operations include Toronto Stock Exchange, TSX Venture Exchange, TSX Alpha Exchange, The Canadian Depository for Securities, Montreal Exchange, Canadian Derivatives Clearing Corp., TSX Trust, TMX Trayport, TMX Datalinx and TMX VettaFi, which provide listing markets, trading markets, clearing facilities, depository services, technology solutions, data products and other services to the global financial community. TMX Group is headquartered in Toronto, and operates offices across North America (Montreal, Calgary, Vancouver and New York), as well as in key international markets including London, Singapore and Vienna.