The stake was bought through Lindsay's 's investment vehicle - Lindsay Investment Trust - the same entity that took a 19.9 per cent stake in tap maker Methven before it was taken over by Australia-based GWA for $118m last year.
The NZX notice said the seller of the CSM stake was Fengli Group (Hongkong) Co.
Lindsay sold the plastics manufacturer Sistema to US consumer goods conglomerate Newell Brands in 2016.
Since then, his other investments have included Cambridge Stud, which he bought in late 2017, and a 50 per cent stake in honey business Coast to Coast Bees.