Notice of AGM of Shareholders to be held on June 14, 2023

NOTICE IS HEREBY GIVEN THAT AN ANNUAL GENERAL MEETING (the “Meeting“) of holders (“Shareholders“) of common shares (“Common Shares“) of Mongoose Mining Ltd. (the “Company“) will be held via live webcast at 12:00 noon (Toronto time), on Wednesday, June 14, 2023 for the following purposes:

1. to receive and consider the audited financial statements of the Company for the year ended December 31, 2022 and the report of the auditor thereon;
2. to fix the number of directors of the Company to be elected at the Meeting at seven;
3. to elect directors to hold office until the next annual general meeting of the Company;
4. to appoint the auditor of the Company for the ensuing year and to authorize the board of directors of the Company to fix the auditor’s remuneration; and
5. to transact such other business as may be properly brought before the Meeting or any adjournment thereof.

The board of directors of the Company has fixed the record date for the Meeting at the close of business on Friday, April 28, 2023 (the “Record Date“). Only Shareholders of record as at the Record Date are entitled to receive notice of the Meeting. Shareholders of record will be entitled to vote those Common Shares owned as at the Record Date, unless any such Shareholder transfers such Shareholder’s Common Shares after the Record Date and the transferee of those Common Shares establishes that the transferee owns the Common Shares and demands, not later than 10 days before the Meeting, that the transferee‘s name be included in the list of Shareholders entitled to vote at the Meeting, in which case such transferee shall be entitled to vote such Common Shares at the Meeting.

ATTENDING THE MEETING

The Meeting will be conducted solely online via live webcast to provide a widely accessible experience for Shareholders.

In order to attend the Meeting virtually, shareholders are required to log in to Web Link: http://momentum.adobeconnect.com/mongooseminingagm/ at least fifteen (15) minutes prior to the start of the Meeting. You may also log on to the Meeting by dialing 416–764–8658 or Toll–Free in North America 1–888–886–7786.

NO VOTES WILL BE ACCEPTED AT THE MEETING.

DATED this 27th day of April, 2023.

BY ORDER OF THE BOARD OF DIRECTORS

(signed)
Matthew Allas, Chairman