Sociedad de Inversiones Pampa Calichera, S.A. (SNSE:CALICHERAA) stake in may be sold. Chile's SVS securities regulator said that the eventual buyer stake owned by Sociedad de Inversiones Oro Blanco S.A. (SNSE:ORO BLANCO); (Oro Blanco), in Pampa Calichera must make a public offer to shareholders in Chemical & Mining Co. of Chile Inc. (NYSE:SQM) (SQM) if the acquisition allows the purchaser to control SQM's Board.

An indirect stake in SQM has been for sale since December 2015. Pampa Calichera in turn owns about 23% of SQM. HK Scott Minerals Company LTD is one of the firms interested in buying the stake.

SVS said, “Any person or entity that acquires a controlling stake in Pampa Calichera, must launch a public share offer to SQM shareholders if the operation allows the buyer to elect enough SQM board members to control decision making.”