Mr. Graeme Jennings reports

IAMGOLD PROVIDES NOTICE OF THIRD QUARTER 2023 RESULTS AND CONFERENCE CALL

Iamgold Corp. plans to release its third quarter 2023 operating and financial results after market hours on Thursday, Nov. 9, 2023. Senior management will host a conference call to discuss the operating performance and financial results on Friday, Nov. 10, 2023, at 8:30 a.m. ET.

Listeners may access the conference call via webcast or through the options below.

Preregister via:  "Chorus Call Iamgold Q3 Registration"

Toll-free (North America):  1-800-319-4610

International:  1-604-638-5340

Webcast:  Iamgold's website

An on-line archive of the webcast will be available by accessing the company's website. A telephone replay will be available for one month following the call by dialling toll-free 1-800-319-6413 within North America or 1-604-638-9010 from international locations and entering the passcode 0518.

About Iamgold Corp.

Iamgold is an intermediate gold producer and developer based in Canada with operating mines in North America and West Africa. The company is building the large-scale, long-life Cote gold project in Canada in partnership with Sumitomo Metal Mining Co. Ltd., which is expected to commence production in early 2024. In addition, the company has an established portfolio of early-stage and advanced exploration projects within high potential mining districts in the Americas. Iamgold employs approximately 3,300 people and is committed to maintaining its culture of accountable mining through high standards of environmental, social and governance (ESG) practices, including its commitment to zero harm in every aspect of its business.