Inversiones Y Desarrollos S.A. offered to acquire additional 20.52% stake in Cementos Bio-Bio S.A. (SNSE : CEMENTOS) for CLP 45.9 billion on December 13, 2017. Under the terms of the offer, Inversiones Y Desarrollos S.A. will acquire 54.21 million shares of Cementos Bio-Bio S.A. at CLP 847 per share. Enrique Elsaca will become top manager of Cementos Bio-Bio S.A.. replacing Inaki Otegui, from January 1, 2018. Otegui announced his resignation. Inversiones Y Desarrollos S.A. completed the acquisition of an additional 0.04% stake in Cementos Bio-Bio S.A. (SNSE : CEMENTOS) for approximately CLP 100 million on January 15, 2018. Inversiones Y Desarrollos acquired 118,469 shares of Cementos Bio-Bio in the transaction. Post transaction, Inversiones Y Desarrollos holds, directly and indirectly, 104.53 million shares of Cementos Bio-Bio, representing 39.5606% stake.