Dr Ambrose Bryant Chukwueloka Orjiako, known universally as ABC Orjiako, occupies a singular place in Nigerian business history: a trained orthopaedic surgeon who left the operating theatre to build one of Africaโs most successful indigenous energy companies.
Born in October 1960 in Calabar into a business family, Orjiako showed early academic promise. He studied medicine at the University of Calabar, graduating in 1985 as the best medical student in his class.
He then trained as a general surgeon at the Lagos University Teaching Hospital before specialising further in orthopaedic and trauma surgery, becoming a Fellow of the West African College of Surgeons in 1996.
That same year, he left medical practice for business, later studying at Harvard Business School. He built interests across oil and gas, pharmaceuticals, shipping and real estate, including Shebah Exploration and Production Company.
His defining venture came in 2009, when he cofounded Seplat Petroleum Development Company, now Seplat Energy, and became its pioneer chairman. Under his leadership, Seplat completed a dual listing on the Nigerian Exchange and the London Stock Exchange in 2014, raising $535 million in an oversubscribed initial public offering. It was the first Nigerian company to achieve such a listing.
The London Stock Exchange later acknowledged his achievements upon his retirement in 2022 after thirteen years as chairman. In 2021, he was named Board Chairman of the Year at the Nigerian Investor Value Awards for instilling a strong corporate governance culture.
His later years, however, have been overshadowed by litigation. In October 2025, a British Virgin Islands court granted Access Bank a summary judgment exceeding $220 million against Orjiako, his wife and eight related offshore companies, concerning historic debts linked to Shebah Exploration.
The judge found the defences โfancifulโ and held that asset transfers lacked commercial rationale. Seplat itself was not a party to the proceedings and has stated that the creditor action does not make the company a judgment debtor.
From the wards of Calabar to the floor of the London Stock Exchange, Orjiakoโs career remains a remarkable study in reinvention and in the risks that accompany ambition at scale.
