Mr. Graeme Jennings reports

IAMGOLD FILES TECHNICAL REPORT FOR THE COTE GOLD PROJECT

Iamgold Corp. has filed a technical report for the Cote Gold project, titled "Technical Report on the Cote Gold Project, Ontario, Canada," dated Aug. 12, 2022.

The 2022 technical report was prepared by representatives of SLR Consulting (Canada) Ltd., Wood Canada Ltd. and Iamgold, each of whom is a qualified person, in accordance with National Instrument 43-101 -- Standards of Disclosure for Mineral Projects, as reported in the company's news release dated Aug. 3, 2022. The 2022 technical report supersedes the technical report on the Cote Gold project dated Nov. 26, 2021.

The 2022 technical report can be found on the company's website, on SEDAR and on EDGAR.

About Iamgold Corp.

Iamgold is a mid-tier gold mining company operating in North America, South America and West Africa. The company has three operating mines: Essakane (Burkina Faso), Rosebel (Suriname) and Westwood (Canada), and is building the large-scale, long-life Cote Gold project (Canada) which is expected to commence production in early 2024. In addition, the company has a robust development and exploration portfolio within high-potential mining districts in the Americas and West Africa.

Iamgold employs approximately 5,000 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. Iamgold is listed on the New York Stock Exchange and the Toronto Stock Exchange and is one of the companies on the Jantzi Social Index (JSI), a socially screened market capitalization-weighted consisting of companies which pass a set of broadly based environmental, social and governance rating criteria.