Andrey Tatuyev acquired additional 0.05% stake in Open JSC Research-And-Production Association Nauka (MISX:NAUK) on June 5, 2017. Andrey Tatuyev now owns 7.7% stake. Andrey Tatuyev completed the acquisition of additional 0.05% stake in Open JSC Research-And-Production Association Nauka (MISX:NAUK) on June 5, 2017.