Toronto, Ontario--(Newsfile Corp. - December 6, 2023) - IAMGOLD Corporation (NYSE: IAG) (TSX: IMG) ("IAMGOLD" or the "Company") announces it has acquired 7,142,857 common shares of Blue Thunder Mining Inc. ("Blue Thunder"), at a price of C$0.07 per share, pursuant to a non-brokered private placement (the "Private Placement") of Blue Thunder, for an aggregate purchase price of approximately C$500,000. Prior to this date, IAMGOLD did not hold any securities of Blue Thunder. As of this date, IAMGOLD beneficially owns approximately 14.48% of the current issued and outstanding common shares of Blue Thunder. IAMGOLD acquired the common shares for investment purposes. Depending on market conditions and other factors, IAMGOLD may from time to time further acquire or dispose of Blue Thunder securities, or maintain its current holdings, as future circumstances may dictate.