Mountain Province Diamonds Inc. — Proxy Solicitation & Information Statement 2022

Nov 10, 2022

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MOUNTAIN PROVINCE DIAMONDS INC.

NOTICE OF SPECIAL MEETING OF SHAREHOLDERS

NOTICE IS HEREBY GIVEN that a special meeting (the “ Meeting ”) of the shareholders of Mountain Province Diamonds Inc. (“ Mountain Province ” or the “ Corporation ”) will be held on December 1, 2022 at 10:00 a.m. Eastern Time. To help continue mitigating health and safety risks to the community, shareholders, employees and other stakeholders in light of the ongoing COVID-19related risks, our Meeting will be held as a virtual only shareholder meeting with participation electronically, which will be conducted via live webcast over the internet at: meetnow.global/MLVN9DJ. Participation in the Meeting will be explained further in the accompanying proxy or voting instruction form, as applicable, and management information circular. Shareholders will not be able to attend the Meeting in person.

At the Meeting you will be asked to vote on the following item of business:

• to consider and, if appropriate, approve an ordinary resolution, the full text of which is attached as Schedule A to the Circular, authorizing a transaction involving the proposed issuance of new second lien loan notes to investors, including, among others, certain entities ultimately beneficially owned by Dermot Desmond, in an aggregate principal amount of $195,876,000.

This notice is accompanied by a management information circular, and either a form of proxy for registered shareholders or a voting instruction form for beneficial shareholders (collectively, the “ Meeting Materials ”).

The Board of Directors of the Corporation has fixed the close of business on October 28, 2022 as the record date, being the date for the determination of the registered holders of common shares of the Corporation entitled to receive notice of, and to vote at, the Meeting and any adjournment thereof.

The Board of Directors of the Corporation has fixed 10:00 a.m. Eastern Time on November 29, 2022, or no later than 48 hours before the time of any adjourned Meeting (excluding Saturdays, Sundays and holidays), as the time before which proxies to be used or acted upon at the Meeting or any adjournment thereof shall be deposited with the Corporation’s transfer agent.

If you have any questions relating to the Meeting, please contact the Corporation by calling tollfree in North America at 1-855-561-4524 or by email at info@mountainprovince.com.

Shareholders who are unable to attend the Meeting electronically are requested to complete, date, sign and send the enclosed form of proxy to Computershare Investor Services Inc. so that as large a representation as possible may be had at the Meeting.

DATED at Toronto, Ontario this 28[th] day of October, 2022.

BY ORDER OF THE BOARD OF DIRECTORS

" Mark Wall "

Mark Wall President and Chief Executive Officer