Karl Christer Lindqvist

STC Interfinans AB is a privately owned Swedish investment company that specializes in long-term portfolio management. The company is based in Stockholm, Sweden and has subsidiaries in Finland and Sweden. The company creates value by owning and developing real estate and forest assets, as well as managing securities and other financial instruments. The company was founded in 1950 by Holger Hjelm.

Dannemora Mineral AB operates as a mining and exploration company, which engages primarily in mining operations in the Dannemora iron ore mine. It also engages in the exploration activities to increase the iron ore base locally and regionally, and to explore for base and precious metals in several areas in Uppland. The company was founded by Nils Bernhard and Lennart Falk on March 17, 2005 and is headquartered in Danderyd, Sweden.