In 1912, the production program was expanded to include cement production in a cement factory built near the Kotouč quarry. Cement production was discontinued in 1997. Since 1945, the company has been part of the Vítkovice ironworks.
On January 1, 1993, the company from Vítkovice was separated into the company KOTOUČ ŠTRAMBERK, spol. s.r.o. From September 18, 1998, Kotouč was owned by ČEZ, which sold part of its share to Calofrig in 2000.
Calofrig's share then passed to the Lasselsberger company, as on 31 In December 2004, Calofrig was dissolved and the assets of the defunct company were transferred to Lasselsberger. On November 23, 2005, Lasselsberger became the majority owner with a 75% stake at the expense of ČEZ. Starting on August 18, 2006, Lasselsberger fully controlled Kotouč Štramberk.
On January 1, 2019, the merger of Kotouč Štramberk with LB Cemix was carried out. LB Cemix belongs to the Lasselsberger group, which controls a significant share of companies in the construction industry in Europe.