IAMGOLD Corporation has entered into a definitive agreement to acquire all outstanding shares of Northern Superior Resources Inc. through a court-approved plan of arrangement under the Business Corporations Act (British Columbia). The transaction will see Northern Superior shareholders receive 0.0991 of an IAMGOLD share and C$0.19 in cash per Northern Superior share, equating to a total consideration of C$2.05 per share and an aggregate transaction value of approximately C$375 million. This represents a premium of 27.4 percent based on the 20-day volume-weighted average prices of both companies as of October 17, 2025. The transaction will also include a pro rata distribution of all ONGold Resources Ltd. shares held by Northern Superior to its shareholders prior to closing. The combined assets, forming the Nelligan Mining Complex in Quebec’s Chibougamau district, will create one of Canada’s largest pre-production gold camps, consolidating over 109,000 hectares and significant mineral resources. Upon completion, IAMGOLD and Northern Superior shareholders will own approximately 97 percent and 3 percent of the pro forma company, respectively. National Bank Capital Markets is acting as financial advisor, Laurentian Bank Securities Inc. as special advisor, and Norton Rose Fulbright Canada LLP as legal advisor to IAMGOLD for this transaction. Davies acted for Northern Superior. The deal is subject to customary approvals and is expected to close in late 2025 or early 2026.