The ASX also noted the significant increase in the volume of AUZ securities traded over the same period.
AUZ responded to the query explaining that it was not aware of any information that had not been released to the market which, if known, could be an explanation for recent trading in the securities of the company.
AUZ has had a busy start to 2019, centred around an updated JORC resource in February 2019 for its Sconi Cobalt-Nickel-Scandium Project in Queensland.
With a bankable feasibility study (BFS) valuing the project at $697 million in November 2018, the focus for AUZ is project funding.
The company recently revealed a new resource of 25.8 million tonnes grading 0.72% nickel and 0.04% cobalt at its Bell Creek Nickel-Cobalt Project in Queensland.
Both projects are within trucking distance of the proposed processing plant at the Sconi project.
When combined together, the three projects host 738,359 tonnes of contained nickel and 71,757 tonnes of contained copper.