Friday, 2 October 2026
M&A desk · constructive view

Northern Star and De Grey: the Hemi test begins

The deal is done. The question the market is now asking is whether Hemi delivers on the reserve narrative that justified the price.

Filed by
Nadia FerreiroSenior analyst, capital allocation
Published
Reading
5 min

Executive summary

The deal is done. The question the market is now asking is whether Hemi delivers on the reserve narrative that justified the price.

Desk
M&A
Stance
Constructive
Sources
2 cited
Reading
5 min
Section 01

Why the deal happened

Northern Star Resources completed its scheme of arrangement to acquire De Grey Mining in 2025, bringing the Hemi gold project in Western Australia's Pilbara region into its development pipeline. Company disclosures set Hemi up as the next major Australian growth asset alongside Kalgoorlie.

Section 02

What to watch in 2026

The integration questions are the usual ones: capital cost inflation on a large Australian build, retention of the technical team that made the discovery, and how aggressively Northern Star pushes for early production versus a fully engineered ramp.

Company disclosures set Hemi up as the next major Australian growth asset alongside Kalgoorlie.
Analyst note · M&A desk
Data visualiser

All-in sustaining cost distribution, producer sample

  • Q1 low1,180
  • Median1,465
  • Q3 high1,720
  • Marginal1,985
All-in sustaining cost distribution, producer sample
StageValue (US$/oz)
Q1 low1180
Median1465
Q3 high1720
Marginal1985

Reported AISC for the producers covered by the markets desk this quarter.

Access private briefings

Desk alerts for the precious metals sector

Reserve evaluations, licensing changes and market notes, sent when the file moves. No promotional mail.

Sources and further reading
Access private briefings

Desk alerts for the precious metals sector

Reserve evaluations, licensing changes and market notes, sent when the file moves. No promotional mail.

More from AurumPivot