Polestar is a subsidiary of Volvo Cars. Volvo Cars was bought by Geely in 2010, a private Holding Group owned by Li Shufu, a chinese billionaire.
Li Shufu is also the chairman of Volvo Cars.
Polestar was founded and headquartered in Sweden, so it is a swedish company but it is owned by Geely/Li Shufu.
Just in case there is someone out there who doesn’t know it: https://youtu.be/OLmun1JEIw0