The three global miners are among at least six companies that have reportedly approached Teck on transactions post-split.

A recent study shows that the use of coal power is not decreasing fast enough to avoid a temperature rise higher than 2 degrees Celsius by 2100 as established in the Paris Agreement.

CIC, which holds slightly over 10% of Teck’s Class B shares, says Glencore's bid would allow for a cleaner exit for investors.