Erste’s local subsidiary BCR and Raiffeisen Capital&Investment, alongside subcontractor Intercapital Invest are also part of the winning consortium.
The consortium outbid two other associations, led by JP Morgan and Citibank, respectively.
Romania owns 85.01% in Romgaz and plans to list a 15% stake in Bucharest by the end of June.
Market participants evaluate the offering at some EUR300 million, a record sum on the Bucharest Stock Exchange.
Under a EUR3.5 billion loan agreement with the International Monetary Fund, Romania has pledged to sell minority stakes of 10% to 15% in key energy and gas producers, including Romgaz, Nuclearelectrica, Transelectrica (TEL.RO), Transgaz (TGN.RO) and Hidroelectrica.
Romgaz reported a net profit of 677.7 million (EUR155.3 million) in the first eight months of 2011, more than double on the year, on total sales of RON2.57 billion. (EUR1=RON4.3424)