In 2010, Transgaz posted a net profit of RON376.3 million.
In its preliminary financial report, Transgaz said total sales increased 2.7% to RON1.35 billion in 2011, from RON1.3 billion a year earlier.
Revenues were up 6.5% on the year to RON1.46 billion in 2011, while overall costs rose 7.2% to RON991.7 million.
Gas transport rose by some 5.13 million megawatts on the year in 2011, Transgaz said.
Transgaz was listed on the Bucharest Stock Exchange at the beginning of 2008. The Economy Ministry owns a 73.5% stake, investment fund Fondul Proprietatea has almost 15% of its shares and the rest is distributed among minority shareholders.
The ministry plans to list another 15% stake in Bucharest this year.
On Tuesday, Transgaz closed down 0.82% at RON242.5 a share. (EUR1=RON4.3473)