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STS Sanok is an ice hockey team in Sanok, Poland. The team is playing its first season in the Eastern Division of the Slovak 2. Liga, the third tier of ice hockey in Slovakia. The team was inactive during the 2016–2017 season due to financial difficulties. Before that, the team competed in the Polska Liga Hokejowa (PHL), the top-level hockey league in Poland.
The team's full legal name is Sanockie Towarzystwo Sportowe S. A.. The club was founded in 1958 as RKS Sanoczanka, and has undergone a number of name changes. It has been playing under the name Ciarko KH 58 Sanok since 2017, for sponsorship reasons. They play their home games in Arena Sanok, which has a capacity of 3,100 people. Between 1965 and 2006, they played their games at Torsan, which has now been taken down and is being used as a parking lot.
The club's main sponsors are PBS Bank, Ciarko, and the City of Sanok. The head coach is Marcin Ćwikła, a former homegrown player who also played for the Polish national team.