Appointment of Proxyholder I/We being holder(s) of securities of IAMGOLD Corporation (the “Corporation”) hereby appoint: David S. Smith,
Chair of the board of directors of the Corporation, or failing this person, Renaud Adams President and Chief Executive Officer (the “Management Nominees”) OR Print the name of the person you are appointing if this person is someone other
than the Management Nominees listed herein. Note: If completing the appointment box above YOU MUST go to http://www.computershare.com/IAMGold and provide Computershare with the name and email address of the person you are appointing. Computershare
will use this information ONLY to provide the appointee with an invite code to gain entry to the online meeting. as my/our proxyholder with full power of substitution and to attend, act and to vote for and on behalf of the holder in accordance with
the following direction (or if no directions have been given, as the proxyholder sees fit) and on all other matters that may properly come before the Annual and Special Meeting of Shareholders of the Corporation to be held online at
https://meetnow.global/MAYSGHX on Wednesday, May 29, 2024 at 10:00 a.m., Eastern Daylight Time, and at any adjournment or postponement thereof. VOTING RECOMMENDATIONS ARE INDICATED BY HIGHLIGHTED TEXT OVER THE BOXES. 1. Election of Directors 01.
Renaud Adams 02. Christiane Bergevin 03. Ann K. Masse 04. Lawrence Peter O’Hagan 05. Kevin P. O’Kane For Against 06. David S. Smith 07. Murray P. Suey 08. Anne Marie Toutant 09. Audra Walsh For Against Fold 2. Appointment of Auditors
Appointment of KPMG LLP, Chartered Accountants, as Auditor of the Corporation for the ensuing year and authorizing the Directors to fix their remuneration. For Withhold 3. Advisory Vote on Executive Compensation Resolved that, on an advisory basis
and not to diminish the role and responsibilities of the board of directors, the shareholders accept the approach to executive compensation disclosed in the management information circular of IAMGOLD Corporation dated April 23, 2024. For Against 4.
Amendments to Share Incentive Plan of the Corporation Resolved, that the shareholders approve the amendments to the share incentive plan of the Corporation, and the amended and restated share incentive plan of the Corporation, as disclosed in the
Corporation’s management information circular delivered in advance of the 2024 annual and special meeting of shareholders. For Against Fold Signature of Proxyholder I/We authorize you to act in accordance with my/our instructions set out above.
I/We hereby revoke any VIF previously given with respect to the Meeting. If no voting instructions are indicated above, and the VIF appoints the Management Nominees, this VIF will be voted as recommended by Management. Signature(s) Date MM / DD / YY
Interim Financial Statements – Mark this box if you would like to receive Interim Financial Statements and accompanying Management’s Discussion and Analysis by mail. Annual Financial Statements – Mark this box if you would like to
receive the Annual Financial Statements and accompanying Management’s Discussion and Analysis by mail. If you are not mailing back your VIF, you may register online to receive the above financial report(s) by mail at
www.computershare.com/mailinglist. H T D Q 3 6 5 1 6 3 A R 1 01ZQED
