In late 1990, the Sigdo Koppers Group acquired an interest in Enaex. Later, in 1993, the group became the Company’s controlling shareholder. This prominent group has investments in: the service sector through Sigdo Koppers Ingeniería y Construcción, Puerto Ventanas S.A. and its subsidiary Fepasa; the industrial sector through Enaex, Magotteaux and Compañía de Hidrógeno BíoBío, the automotive sector through SKBergé S.A., and import, sales and leasing of heavy machinery, agricultural machinery and transportation equipment for the construction and consumables through SK Comercial S.A.

To December 31, 2017, the ownership structure of Enaex S.A. It was constituted as follows:

Presentacion1To December 31, 2017, the capital of Enaex S.A. It was divided into 123,000,000 shares and its 12 main shareholders were: