Petrosibir AB (publ) engages in the exploration and development of oil and gas concessions in Russia. It holds the Ayazovskoye production license and the Rustamovskoye exploration license covering an area of 167 kilometers; the Aysky exploration license covering an area of 187 square kilometers; and the Suyanovskoye license, which covers an area of 300 square kilometers located in the Russian republic of Bashkiria. The company also holds the Dinyu-Savinoborskoye production license that covers an area of 940 square kilometers; the Sosnovskoye production license covering an area of 25 square kilometers; and the Yuzhno-Tebukskoye production license, which covers an area of 5 square kilometers located in the Russian republic of Komi. It has 2P oil and gas reserves of 35 million barrels of oil equivalent. The company was formerly known as Shelton Petroleum AB (publ) and changed its name to Petrosibir AB (publ) in December 2015. Petrosibir AB (publ) was founded in 2007 and is headquartered in Stockholm, Sweden.