On Tuesday, the Swedish electric-vehicle battery maker closed down a Californian unit, Cuberg, that it acquired only three years ago.
HKEX said core earnings from its commodities unit jumped by 82% from a year earlier.
The craft may become the first private mission to fly by a body in the Solar System besides the Moon, capturing images and data.
Earlier this year, Sibanye confirmed through a scoping study the potential of the GalliCam project, and a pre-feasibility study is currently underway.