IAMGOLD Corporation (TSX: IMG | NYSE: IAG) released preliminary third-quarter 2026 operating results for its Côté Gold Mine ahead of an analyst and institutional investor site tour on October 22, 2026. The operation achieved record quarterly mining volumes and record monthly plant throughput in September, surpassing nameplate capacity. Attributable production for the quarter reached 64,400 ounces on a 70% basis, with the company guiding full-year output toward the lower end of its established range. Investors may be watching the anticipated updated mine plan and Mineral Reserve estimate, expected in the fourth quarter of 2026.

Key Points

  • IAMGOLD Corporation (TSX: IMG | NYSE: IAG) released preliminary Côté Gold Q3 2026 operating results
  • Attributable gold production of 64,400 ounces (70% basis) in Q3 2026; 184,000 ounces year to date
  • Record quarterly mining volumes of 12.4 million tonnes; September plant throughput averaged a record 37,100 tpd, above nameplate capacity of 36,000 tpd
  • Full-year 2026 attributable production expected at the lower end of guidance of 270,000–310,000 ounces; updated mine plan and Mineral Reserve estimate anticipated in Q4 2026

Côté Gold Q3 2026 Production and Throughput Performance

Côté Gold produced 92,000 ounces on a 100% basis in Q3 2026, bringing year-to-date production to 262,900 ounces at the 100% level. Mill throughput totalled 2.9 million tonnes for the quarter, impacted by an extended annual shutdown in August and the transition to owner-only crushing following the discontinuation of external contractor crushing by the end of June 2026. September recovered strongly, with the plant averaging a record 37,100 tonnes per day — above the nameplate capacity of 36,000 tpd — and totalling 1.1 million tonnes for the month alone. Head grades averaged 1.10 g/t, while recoveries averaged 90%, slightly lower than prior quarters due to early-quarter downtime on one of two Vertimills.

Record Mining Volumes and Crusher Circuit Improvements at Côté

Total material mined reached a quarterly record of 12.4 million tonnes in Q3 2026, including a single-day record of 225,000 tonnes mined ex-pit on August 10. Ore tonnes mined were 3.8 million tonnes at an average grade of 0.93 g/t, consistent with expectations, while a strip ratio of 2.3:1 reflected ongoing capital stripping as pit pushback advanced. The release states that the transition to owner-only crushing delivered record crusher and high-pressure grinding rolls throughput in September, with improved HPGR roll wear rates expected to reduce maintenance costs and improve crushing circuit availability going forward.

2026 Outlook and Anticipated Mineral Reserve Update

IAMGOLD indicated full-year 2026 attributable production from Côté is expected at the lower end of its guidance range of 270,000 to 310,000 ounces (390,000 to 440,000 ounces on a 100% basis). The company expects Q4 production to be higher, supported by improved grades from mine sequencing and increased processing rates. An updated Côté Gold mine plan and Mineral Reserve estimate is anticipated in Q4 2026, with a subsequent Technical Report to follow. The updated plan is expected to demonstrate a significant expansion of Mineral Reserves and life of mine, and outline a pathway toward sustained processing rates of approximately 40,000 tpd through debottlenecking and targeted plant improvements.

Full Q3 2026 Results Scheduled for November 5, 2026

IAMGOLD confirmed it will report complete third-quarter 2026 financial and operating results on November 5, 2026, after market close, followed by a conference call on November 6 at 8:30 a.m. ET. Presentation materials from the October 22 Côté Gold Mine tour for analysts and institutional investors were to be made available on the company's website. The immediate share price impact of this announcement was not clear from available public information.