Holcim said on Monday it would not comment on press reports about shareholder reactions to the terms of its planned merger with Lafarge.

"The board of Holcim has taken note of press statements about shareholder reactions relating to the commercial terms of the combination," Holcim said in a statement.

The company added that any transaction will have to be approved by two-thirds of Holcim's shareholders in an extraordinary general meeting, and two-thirds of Lafarge's shareholders will need to accept Holcim's exchange offer launched pursuant to French takeover rules.