IAMGOLD Sees 2022 Cash Cost Guidance Of $1,100-$1,150 Per Ounce Sold

Strategic Focus Prioritizing highest return portfolio assets with the strongest net free cash flow and value creation; commencing a strategic review process to evaluate options for Rosebel 2021 Operational Results 2021 attributable gold production of 601,000 ounces near the top of the updated production guidance Cash costs1 expected to be within updated guidance range of $1,115 to $1,150 per ounce sold All-in sustaining costs ("AISC")1 expected to be within updated guidance range of $1,395 to $1,435 per ounce sold2 2022 Outlook Attributable gold production guidance of 570,000 to 640,000 ounces Cash costs guidance of $1,100 to $1,150 per ounce sold3 and AISC guidance of $1,650 to $1,690 per ounce sold Côté Gold Project Project completion at 43.4% and remains on track for H2 2023 commercial production Rosebel Life of Mine Plan Potential for extended mine life; expected to ramp up to over 300,000 ounces per year