Benin-born oil veteran Samuel Dossou-Aworet holds $1.4 billion of Nigerian oil shares

Samuel Dossou-Aworet holds Nigerian oil shares worth $1.43 billion, built through two positions accumulated over twenty years.

His wholly owned Petrolin Trading Ltd holds 81,015,319 shares in Seplat Energy, worth 1.098 trillion naira, or $830.7 million at 1,321.68 to the dollar. A second Petrolin subsidiary holds 532,693,719 shares in Aradel Holdings, worth 793.6 billion naira, or $600.5 million, according to Billionaires.Africa calculations at Friday's closing prices of 13,552.60 naira for Seplat and 1,489.80 for Aradel.

The Seplat position, reported at about 13.9 percent of the company, is worth more than the Aradel one despite representing a fraction of the share count, because Seplat trades at roughly nine times Aradel's price.

Dossou-Aworet is 81, was born in Porto-Novo in Benin, and spent the first half of his career running the oil sector of a country that was not his own.

Thirteen years inside Gabon's oil ministry

He trained as an engineer, graduating in petrochemistry and industrial organic synthesis in 1971 and taking a second qualification at the French Institute of Petroleum in 1972. He spent 1973 and 1974 consulting at Sema Metra International in Paris.

Gabon brought him in as an adviser to its minister of mines, energy and petroleum in 1974. He became Director General of Hydrocarbons in 1978 and held the post until 1991, then served as General Commissioner for the Inspection and Control of Hydrocarbons and Mines until 1992.

The positions accumulated alongside it. He was a governor of the OPEC Special Fund from 1976 to 1980, chaired the OPEC Board of Governors across two terms, represented Gabon at the African Petroleum Producers Association from 1988 to 1992 and chaired that body's expert committee. Gabon granted him honorary citizenship, which is why he is frequently described as Gabonese.

He was also close to the late President Omar Bongo Ondimba, whom he advised on oil for years. His wife, Honorine Dossou-Naki, served as Gabon's ambassador to Paris and London.

Nearly two decades inside the machinery of African oil taught him who held the assets, who controlled access to them and where the gaps sat. He left government in 1992.

Petrolin, and the company Tullow wanted

He founded Petrolin UK in London that year as a crude oil trading and refinery processing business, and moved the headquarters to Geneva in 1993. Advisory work followed for Benin, Congo, Gabon, the Democratic Republic of Congo and Chad, for OPEC and the African Petroleum Producers Association, and for international oil companies including Tullow Oil.

The company that made him came two years later. Dossou-Aworet co-founded Energy Africa in 1994, a pan-African exploration business built with the South African refiner Engen Petroleum, and spent a decade assembling assets down the west coast of the continent.

Petronas, Engen's Malaysian parent, moved to buy Energy Africa in 2003. Dossou-Aworet blocked it. He wanted the company to keep its African identity, and the bid failed.

Tullow Oil bought it the following year for $500 million. The transaction doubled the size of the Irish-founded explorer overnight, handed it assets from Ghana to Namibia, and delivered the acreage on which Tullow later found the Jubilee and TEN fields, its two largest. Dossou-Aworet took shares as part of the consideration and has been a Tullow shareholder since.

He did not stay passive. When Tullow's stock collapsed in late 2019, after the company cut production forecasts, suspended its dividend and lost both its chief executive and its exploration director, he disclosed that he had crossed the 3 percent threshold and kept buying through the slump. By the time the filings settled he held just over 7 percent and had become the largest shareholder. British press speculated he might mount a low-priced bid. None came.

He reached about 13 percent by mid-2020 and raised it to 16.6 percent from 12.7 percent in June 2023, built through five companies including Petrolin Trading. Tullow has not published an updated shareholding for him since, and it sold its Gabonese subsidiary for about $300 million this year.

Nigeria, twenty years in the making

Petrolin took a participating interest in Niger Delta Exploration and Production in 2005, the company that later became Aradel Holdings and listed on the Nigerian Exchange in 2022. The Seplat holding dates from that company's early years.

His Aradel position was 8.31 percent at the end of June 2025. Petrolin Ocean Limited then bought 173.79 million additional shares on Sept. 25, at an average of 555 naira, spending 96.45 billion naira, or about $64.4 million at the time. That lifted the stake to 13.77 percent and made him Aradel's largest individual shareholder. Aradel traded at 560 naira that week. It closed at 1,489.80 on Friday.

The larger transaction had come six months earlier. Petrolin joined the Renaissance consortium alongside Waltersmith Group, ND Western, First E&P and Aradel Holdings to buy Shell Petroleum Development Company of Nigeria outright for $2.4 billion. Shell announced the sale in January 2024 and Renaissance completed it in March 2025 after clearing every regulatory approval, taking 100 percent of Shell's onshore Nigerian business.

Aradel holds 33.34 percent of Renaissance, comprising 12.5 percent directly and 20.84 percent through ND Western. The other partners have not disclosed their individual stakes.

Africa Confidential assessed what the deal would mean while it was still pending. If it completed, the publication wrote, it would leave Dossou-Aworet the single most important oil executive in Nigeria measured by upstream exploration and production assets.

He chairs ND Western, and Petrolin Trading agreed in October 2025 to sell its 40 percent holding in that company to Aradel, subject to approval from the Nigerian Upstream Petroleum Regulatory Commission, the Federal Competition and Consumer Protection Commission and the minister. That would consolidate Aradel's position while converting his ND Western interest into cash or paper.

What else he holds

Petrolin now operates across more than ten African countries, and Dossou-Aworet has provided advice or taken positions in Cameroon, Chad, Congo, Côte d'Ivoire, the Democratic Republic of Congo, Egypt, Equatorial Guinea, Gabon, Mauritania, Mauritius, Morocco, Namibia, Senegal, South Africa, Uganda and Yemen. He holds a 45 percent interest in Nigeria's OML 34 and markets Gabonese crude.

The group's largest non-oil commitment is at home. The Backbone Project in Benin is an integrated rail, port and airport corridor, which he has described as a means of opening opportunities for African entrepreneurs and workers using resources already within their reach.

His institutional roles run in parallel. He co-founded the African Institute of Petroleum in 1996 and chairs it, serves as president of the African Business Roundtable, which the African Development Bank established in 1990, and sits as vice chairman of the Pan-African Private Sector Trade and Investment Committee. He founded the Fondation Espace Afrique and sits on the board of the Corporate Council on Africa. France made him an Officer of the Legion of Honour and Gabon a Grand Officer of the Order of the Equatorial Star.

He has given almost no interviews about any of it.