Côté & Gosselin DEVELOPMENT Ontario, Canada OPERATOR IAMGOLD Corporation ("IAMGOLD"), Sumitomo Metal Mining Co., Ltd COMMODITY TYPE TERMS LAND AREA Gold Royalty 1.35% NSR 332 ha Royalty Summary Reserves Côté is poised to become one of Canada’s largest gold mines with an Reserves & Resources - Côté expected annual output of 495Koz and total cash costs of US$693/ P&P Reserves (koz Au) 7,610 oz in the 昀椀rst six years of operation. Construction of the mine com- M&I Resources (koz Au) 12,067 menced in the fall of 2020 and IAMGOLD is targeting ramp up to com- Inferred Resources (koz Au) 1,184 mercial production in mid-2024. Côté and Gosselin currently boasts Reserves & Resources - Gosselin a Proven & Probable Mineral Reserve of 7.61 Moz, a Measured and P&P Reserves (koz Au) - Indicated Resource of 16.49 Moz and an Inferred Resource of 4.16 M&I Resources (koz Au) 4,420 Moz making it one of the largest gold resources in Canada. Inferred Resources (koz Au) 2,980 Metalla Royalty Ounces - GEOs Our royalty covers a portion of the northern and north-eastern part P&P Reserves (koz) 6.2 of the Côté pit and all of the Gosselin gold project. Gosselin is cen- M&I Resources (koz) 69.4 tered ~1.5km to the northeast of the Côté deposit which IAMGOLD Inferred Resources (koz) 41.2 * Mineral Resources are reported inclusive of Mineral Reserves. estimates Gosselin to host a resource estimate of 4.42 Moz in the * For Royalty GEOs calculation, Metalla estimates 6% of Côté and 100% of Gosselin’s Mineral Resources and Mineral Reserves are subject to our royalty interest at a rate of 1.35%. Indicated Resource category and 2.98 Moz in the Inferred Resource * For sources, please refer to note 1 on the Notes & Sources page. category. Gosselin was discovered in 2019 and is part of the Côté joint venture between IAMGOLD & Sumitomo. IAMGOLD has indicat- ed that the Gosselin zones exhibit similar geology and metallurgical Royalty & Mineralization Map characteristics, indicating potential for similar gold recoveries to the Côté gold deposit. Royalty Boundary In October 2023, IAMGOLD announced the completion of another Mineralization successful drill campaign at Gosselin and reported additional results. IAMGOLD stated recent drilling at Gosselin provides evidence that the Gosselin deposit is approaching similar dimensions as the adja- cent Côté deposit. In addition, IAMGOLD continues to advance tech- nical studies on Gosselin, including metallurgical testing, mining and infrastructure studies to review alternatives to optimize the possible inclusion of the Gosselin deposit into a future Côté Gold life-of-mine plan. Notable intercepts from the recent Gosselin exploration program in- clude 0.65 g/t gold over 472 meters, 0.82 g/t gold over 356 meters, 1.40 g/t gold over 300.8 meters and 1.53 g/t gold over 240 meters. The Gosselin deposit remains open at depth to the northwest and along strike to the east and southwest. Metalla Royalty & Streaming Ltd. 15