Gold Fields Limited and Harmony Gold Mining Company Limited were both public mining companies listed on securities exchanges. Harmony sought to acquire all the issued shares of Gold Fields through a two-part offer. The offer involved the exchange of Harmony shares for Gold Fields shares at a specified ratio, rather than a cash transaction. Gold Fields contended that this exchange offer constituted an offer to the public for the subscription of shares in terms of section 145 of the Companies Act 61 of 1973 and was unlawful because it was not accompanied by a prospectus. Gold Fields applied to the High Court for declaratory relief, which was dismissed, leading to an appeal to the Supreme Court of Appeal.