net loss of 629 billion roubles ($6.9 billion) in 2023, its first annual loss in more than 20 years, amid dwindling gas trade with Europe, once its main sales market.
The results highlight the dramatic decline of Gazprom, which since the collapse of the Soviet Union has been one of Russia's most powerful companies, often used as a leverage to solve disputes with its neighbours, such as Ukraine and Moldova.
Analysts had expected net income of 447 billion roubles, according to Interfax news agency.
According to Reuters analysis, it was Gazprom's first annual loss since the late 1990s/early 2000s, when Alexei Miller, an ally of President Vladimir Putin, took over the company in 2001.
Gazprom's 2023 loss followed a net profit of 1.2 trillion roubles in 2022.
The company, now headquartered in St. Petersburg, made heavy losses in the late 1990s after it racked up foreign-currency debt, inflated in rouble terms by the financial crisis of 1998.
Gazprom shares in Moscow were down around 3.3% at 1307 GMT.
Russia's gas exports to Europe, once its primary export market, have slumped because of the political fallout from the conflict in Ukraine, while Gazprom, which has a monopoly on piping gas abroad, has been the most tangible victim of Western sanctions.
Gazprom has also been engaged in an extensive programme of bringing natural gas to local households.
It said on Thursday it made a net loss of 364 billion roubles from sales in 2023, in contrast to a profit