Northern Star Resources' Kalgoorlie Consolidated Gold Mines in WA. Image: Inc/shutterstock.comNorthern Star has appointed Glencore executive Suresh Vadnagra as its next managing director and chief executive officer (CEO), as the gold producer simultaneously confirmed it had achieved its revised 2025-26 financial year (FY26) production guidance. Vadnagra will take over from long-serving CEO Stuart Tonkin on October 5, 2026 following a comprehensi…