Sistema founder and multi-millionaire Brendan Lindsay last week paid $250,000 for a 12 per cent stake in the listed shell company, CSM Group.
CSM was listed on the now-defunct junior board, the NZAX, before moving to the exchange's main board in July.
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In its last annual report for the year to June, the former scrap metal company announced a $1.3m loss.
CSM is a listed shell that was "looking for suitable investments", according to the company's website.