ATCO LTD. — AGM Information 2021

Feb 8, 2021

February 8, 2021

Nova Scotia Securities Commission Securities Commission of Newfoundland and Labrador Alberta Securities Commission Saskatchewan Financial and Consumer Affairs Authority Manitoba Securities Commission New Brunswick Financial and Consumer Services Commission Ontario Securities Commission British Columbia Securities Commission Superintendent of Securities, Prince Edward Island Autorité des marchés financiers

RE: ATCO Ltd.

Pursuant to a request from the above-mentioned reporting issuer, we wish to advise you of the following information in connection with its Annual Meeting of Shareowners:

Date of meeting:	May 12, 2021
Record date for notice:	March 23, 2021
Record date for voting:	March 23, 2021
Beneficial ownership determination date:	March 23, 2021
Securities entitled to notice:	Class II Voting
	Class I Non-Voting
Securities entitled to vote:	Class II Voting
Issuer mailing directly to non-objecting beneficial owners:	No
Issuer will pay for objecting beneficial owner material distribution:	Yes
Issuer using notice-and-access for registered investors:	No
Issuer using notice-and-access for non-registered investors:	Yes
Notice-and-access stratification criteria:	No

Sincerely,

Trust Central Services AST Trust Company (Canada)