An undisclosed buyer acquired 35.24% stake in NanoGroup S.A. (WSE:NNG) from GPV I Inwestycje Sp. z o.o. on July 19, 2018. An undisclosed buyer completed the acquisition of 35.24% stake in NanoGroup S.A. (WSE:NNG) from GPV I Inwestycje Sp. z o.o. on July 19, 2018.