LAGOS — Dangote Petroleum Refinery and Petrochemicals has signed its initial public offering (IPO) documents with advisers and other parties involved in the proposed offer, ahead of its planned opening on September 14, 2026.The documents were signed on Monday at a preliminary signing ceremony for the proposed IPO of the refinery.Speaking at the event, Chuka Eseka, Group Managing Director and Chief Executive Officer of Vetiva Capital Management Limited, said the refinery was expected to li