Virtual Annual Meeting of Holders of Common Shares
of IAMGOLD Corporation (the "Corporation")
May 5, 2026
REPORT OF VOTING RESULTS
National Instrument 51-102 Continuous Disclosure Obligations Section 11.3
Item 1: Election of Directors
The nominees listed on the Management Information Circular dated March 25, 2026, were elected as directors of the Corporation to hold office for the ensuing year or until their successors are elected or appointed. The Corporation received the following votes with respect to the election of the eight nominees:
| Nominee | Votes For | % For | Votes Against | % Against |
| Renaud Adams | 411,382,926 | 99.83 | 690,612 | 0.17 |
| Christiane Bergevin | 313,137,983 | 75.99 | 98,935,555 | 24.01 |
| Lawrence Peter O'Hagan | 409,152,082 | 99.29 | 2,921,456 | 0.71 |
| Kevin P. O'Kane | 379,500,746 | 92.10 | 32,572,792 | 7.90 |
| Daniel Racine | 411,388,502 | 99.83 | 685,035 | 0.17 |
| David S. Smith | 408,593,289 | 99.16 | 3,480,249 | 0.84 |
| Murray P. Suey | 393,376,701 | 95.46 | 18,696,836 | 4.54 |
| Anne Marie Toutant | 411,345,599 | 99.82 | 727,941 | 0.18 |
Item 2: Appointment of Auditors
KPMG LLP were appointed auditor of the Corporation to hold office until the close of the next annual meeting of shareholders or until their successors are appointed, and the directors of the Corporation were authorized to fix the remuneration of the auditors. The Corporation received the following votes with respect to the election of the auditor:
| Votes For | % For | Votes Withheld | % Withheld |
| 381,448,712 | 85.52 | 64,607,053 | 14.48 |
Item 3: Amendments to the Share Incentive Plan of the Corporation
The shareholders approved the amendments to the share incentive plan of the Corporation and the amended and restated share incentive plan of the Corporation. The Corporation received the following votes with respect to the amendments to the share incentive plan:
| Votes For | % For | Votes Against | % Against |
| 401,454,772 | 97.42 | 10,618,765 | 2.58 |
150 King Street West, Suite 2200 Toronto, ON, M5H 1J9 Canada
T 416 360 4710 F 416 360 4750 Toll Free 1 888 IMG 9999 E info@iamgold.com iamgold.com
Item 4: Executive Compensation
The shareholders approved an advisory resolution on IAMGOLD's approach to executive compensation. The Corporation received the following votes with respect to executive compensation:
| Votes For | % For | Votes Against | % Against |
| 407,862,847 | 98.98 | 4,210,689 | 1.02 |
Dated this 5th day of May 2026.
IAMGOLD CORPORATION
/s/ Annie Torkia Lagacé
_____________________________
Annie Torkia Lagacé
Chief Legal Officer
150 King Street West, Suite 2200 Toronto, ON, M5H 1J9 Canada
T 416 360 4710 F 416 360 4750 Toll Free 1 888 IMG 9999 E info@iamgold.com iamgold.com