Iamgold Renews Preliminary Base Shelf Prospectus

IAMGOLD RENEWS PRELIMINARY BASE SHELF PROSPECTUS

Toronto, Ontario, March 14, 2018 – IAMGOLD Corporation (“IAMGOLD” or the “Company”) today

announced it has filed a preliminary short form base shelf prospectus with the securities regulators in

each province and territory of Canada, except for the Province of Quebec, and a corresponding

registration statement with the United States Securities and Exchange Commission. These filings, when

made final or effective, will allow the Company to make offerings of common shares, first preference

shares, second preference shares, debt securities, warrants, subscription receipts or any combination

thereof of up to US $1 billion during the next 25 months in the United States and Canada, except for the

Province of Quebec. The net proceeds from any such offerings may be used by the Company to fund on-

going operations and/or capital requirements, reduce the level of indebtedness outstanding from time to

time, fund capital programs, fund potential future acquisitions and for general corporate purposes. The

Company filed this new preliminary base shelf prospectus with a view to maintaining financial flexibility

but has no immediate intention to undertake an offering.

About IAMGOLD

IAMGOLD (www.iamgold.com) is a mid-tier mining company with four operating gold mines on three

continents. A solid base of strategic assets in North and South America and West Africa is complemented

by development and exploration projects and continued assessment of accretive acquisition

opportunities. IAMGOLD is in a strong financial position with extensive management and operational

expertise.

For further information please contact:

Ken Chernin, VP Investor Relations, IAMGOLD Corporation

Tel: (416) 360-4743 Mobile: (416) 388-6883

Laura Young, Director Investor Relations, IAMGOLD Corporation

Tel: (416) 933-4952 Mobile: (416) 670-3815

Martin Dumont, Senior Analyst Investor Relations, IAMGOLD Corporation

Tel: (416) 933-5783 Mobile: (647) 967-9942

IAMGOLD Corporation Toll-free: 1 888 464-9999 [email protected]

Please note:

This entire news release may be accessed via fax, e- mail, IAMGOLD's website at www.iamgold.com and through CNW Grou p’s

website at www.newswire.ca. All material information on IAMGOLD can be found at www.sedar.com or at www.sec.gov.

Si vous désirez obtenir la version française de ce communiqué, veuillez consulter le

http://www.iamgold.com/French/accueil/default.aspx.

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