An undisclosed buyer acquired 23.1% stake in JSC Slavneft-YANOS (MISX:JNOS) from Vardez Holdings Limited on January 19, 2018. An undisclosed buyer completed the acquisition of 23.1% stake in JSC Slavneft-YANOS (MISX:JNOS) from Vardez Holdings Limited on January 19, 2018.