CMC METALS LTD. Suite 1000 – 409 Granville Street Vancouver, BC V6C 1T2

NOTICE OF THE ANNUAL GENERAL AND SPECIAL MEETING OF SHAREHOLDERS TO BE HELD ON MARCH 15, 2023

TO: The Shareholders of CMC Metals Ltd.

NOTICE IS HEREBY GIVEN that the annual general meeting (the “ Meeting ”) of the Shareholders of CMC Metals Ltd. (“ CMC ”) will be held in Vancouver, British Columbia, at Suite 101 – 409 Granville Street, Vancouver, BC V6C 1T2, on Wednesday, the 15^th day of March, 2023, at 10:00 a.m., for the following purposes:

1. To receive and consider the financial statements of CMC for the fiscal years ended September 30, 2022 and September 30, 2021, together with the reports of the auditor thereon;

2. To determine the number of directors to be elected to the board;

3. To elect directors for the ensuing year or until their successors have been duly elected or appointed;

4. To appoint auditors for the ensuing year and to authorize the directors to fix the remuneration of the auditors;

5. To ratify, confirm and approve CMC’s “rolling 10%” Stock Option Plan; and

6. To transact such other business as may properly come before the Meeting or any adjournment or adjournments thereof.

Accompanying this Notice of Meeting is an Information Circular and a Form of Proxy.

At the date of this Notice and the accompanying Information Circular it is the intention of CMC to hold the Meeting in person at the location stated above in this Notice. Due to the ongoing public health concerns related to the coronavirus pandemic (“ COVID-19 ”), CMC recommends that all stockholders submit votes by sending in a properly completed and signed form of proxy (or voting instruction form) prior to the Meeting following instructions in the Circular. CMC reserves the right to take pre-cautionary measures deemed to be appropriate, necessary or advisable in relation to the Meeting in response to changes in COVID-19 including: change of Meeting date, change of Meeting venue or the way in which the Meeting is held, for example by virtual meeting. Should any changes to the Meeting occur, CMC will announce any and all changes by way of news release filed under CMC’s profile on SEDAR at www.sedar.com. Please check CMC’s SEDAR profile prior to the Meeting for the most current information. In the event of changes to the Meeting format due to COVID-19, CMC will not prepare or mail amended Meeting Proxy Materials.

If you are a registered shareholder of CMC and, otherwise, unable to attend the Meeting in person, please complete, date and sign the accompanying form of proxy and deposit it with the CMC’s transfer agent, Computershare Investor Services Inc., 8^th Floor, 100 University Avenue, Toronto, Ontario M5J 2Y1 at least 48 hours (excluding Saturdays, Sundays and holidays recognized in the Province of British Columbia) before the time and date of the Meeting or any adjournment or postponement thereof.

• 2 -

If you are a non-registered shareholder of CMC and received this Notice of Meeting and accompanying materials through a stockbroker, securities dealer, bank, trust company, trustee or nominee of any of the foregoing that holds your securities on your behalf (each, an “ Intermediary ”), please complete and return the materials in accordance with the instructions provided to you by your Intermediary.

DATED at Vancouver, British Columbia, this 7^th day of February, 2023.

BY ORDER OF THE BOARD OF DIRECTORS

vin Brewer

Ke vin Brewer Chief Executive Officer