Iamgold Corporation Announces Acquisition of Common Shares of Tomagold Corporation

NEWS RELEASE

TSX: IMG NYSE: IAG

IAMGOLD CORPORATION ANNOUNCES ACQUISITION OF COMMON SHARES OF

TOMAGOLD CORPORATION

Toronto, Ontario, August 14, 2017 – IAMGOLD Corporation (“IAMGOLD”) or (the “Company”)

announces that it has acquired 27,777,777 common shares (“Common Shares”) of TomaGold

Corporation (“TomaGold”).

IAMGOLD subscribed for 27,777,777 Common Shares of TomaGold from treasury (the “Acquisition”) ,

representing approximately 19.98% of the outstanding Common Shares of TomaGold. The Common

Shares were purchased at a price of $0.09 per Common Share, for an aggregate purchase price of

$2,500,000. Prior to the Acquisition, IAMGOLD did not hold any Common Shares of TomaGold.

IAMGOLD has not acquired the Common Shares with an intention to acquire control of TomaGold.

IAMGOLD will monitor the business, prospects, financial condition and potential capital requirements of

TomaGold. Depending on its evaluation of these and other factors, IAMGOLD may from time to time in

the future increase or decrease its ownership, control or direction over Common Shares or other

securities of TomaGold through market transactions, private agreements, subscriptions from treasury or

otherwise.

TomaGold’s head office is located at 410, St-Nicolas, Suite 236, Montréal, Québec H2Y 2P5.

About the Monster Lake – TomaGold JV

The Monster Lake project, located 50 kilometres southwest of Chibougamau, Quebec, Canada, is currently a

50:50 joint venture between IAMGOLD and Tomagold. IAMGOLD is the operator of the joint venture and

holds an option to earn a further 25% undivided interest, for a total 75% undivided interest in the project, by

completing additional exploration expenditures by January 1, 2022.

IAMGOLD has been conducting successive exploration campaigns on the property which is underlain by

Archean volcanic rocks of the Obatogamau Formation and is targeting high grade gold mineralization

primarily along a 3-kilometre trend of the Monster Lake Structural Corridor (“MLSC”).

Qualified Persons

The technical information in this news release was prepared under the supervision of, and reviewed and

verified by, Craig MacDougall, P.Geo., Senior Vice President, Exploration for IAMGOLD. Mr. MacDougall is a

Qualified Person as defined by National Instrument 43-101.

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 Canada, South America and 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

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

Laura Young, Director Investor Relations, IAMGOLD Corporation

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

Shae Frosst, Investor Relations Associate, IAMGOLD Corporation

Tel: (416) 933-4738 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 Group’s website

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