TMX Group Limited — AGM Information 2021

Feb 19, 2021

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TSX TRUST COMPANY

VIA ELECTRONIC TRANSMISSION

February 19, 2021

TO ALL APPLICABLE EXCHANGES AND COMMISSIONS:

RE: TMX GROUP LIMITED Confirmation of Notice of Record and Meeting Dates

We are pleased to confirm that Notice of Record and Meeting Dates was sent to The Canadian Depository for Securities.

We advise the following with respect to the upcoming Annual General and Special Meeting of Security Holders for the subject issuer:

1	ISIN:	CA87262K1057
	CUSIP:	87262K105
2	Date Fixed for the Meeting:	May 12, 2021
3	Record Date for Notice:	March 16, 2021
4	Record Date for Voting:	March 16, 2021
5	Beneficial Ownership Determination Date:	March 16, 2021
6	Classes or Series of Securities that entitle	COMMON
	the holder to receive Notice of the Meeting:
7	Classes or Series of Securities that entitle	COMMON
	the holder to vote at the meeting:
8	Business to be conducted at the meeting:	Annual General and Special
9	Notice-and-Access:
	Registered Shareholders:	YES
	Beneficial Holders:	YES
	Stratification Level:	ONLY TO REGISTERED HOLDERS
10	Reporting issuer is sending proxy-related materials
	directly to Non-Objecting Beneficial Owners:	YES
11	Issuer paying for delivery to Objecting Beneficial Owners:	YES

Yours truly, TSX Trust Company

• " Steven Nguyen " Senior Manager Steven.Nguyen@tmx.com

VANCOUVER

• 650 West Georgia Street, Suite 2700 Vancouver, BC V6B 4N9

CALGARY

300-5th Avenue SW, 10th floor Calgary, AB T2P 3C4

TORONTO

301 - 100 Adelaide Street West Toronto ON M5H 4H1

MONTRÉAL

1800 - 1190, avenue des Canadiens-de-Montréal, C. P. 37 Montréal (Québec) H3B 0G7

Toll Free 1-866-600-5869 T 416 361-0930

T 514 395-5964

T 604 689-3334

T 403 218-2800