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Notice of Change to time of Earnings Call

CALGARY, Alberta–(BUSINESS WIRE)–The Dominion Diamond Mines ULC Investor Portal has been updated with
information regarding a recent change to the time of the Q1 earnings
call. The earnings call will now be held at 11AM EST on Friday May 24,
2019.

Notification regarding details of this earnings call have been provided
through Dominion Diamond’s automated email alert system. If you are not
currently subscribed to the Investor Portal, please subscribe to receive
automated email alerts regarding information posted to the Investor
Portal. If you are currently subscribed to the Dominion Diamond Investor
Portal and have not received these automated email notifications, please
review any email filters with your corporate IT department.

Regards,

Dominion Diamond Mines ULC

Contacts

Huili Li
[email protected]