Sergey Yanchukov, Ten Percent Owner at Mangazeya Mining, holds 1.15B shares in Mangazeya Mining (Ticker: WHTGF), holds 5.94M shares in Red Tiger Mining (Ticker: TSE:RMN.H). Most recently, Sergey Yanchukov Bought ― shares of Mangazeya Mining on Nov 12, 2020 for an estimated value of 24.54K.