Northern Star KCGM site visit. Since then, Northern Star announced the appointment of Glencore executive Suresh Vadnagra to replace outgoing boss Stuart Tonkin as CEO from October 5. Northern Star subsequently appointed former Perseus Mining (ASX/TSX: PRU) CEO Jeff Quartermaine as a non-executive director. When handing down its quarterly production results last week, Northern Star management declined to comment on Elliott’s campaign but confirmed that engagement was ongoing. Northern Star acquired Saracen in 2020, bringing the KCGM asset into Australian hands for the first time in its modern history.