Top-ten Holcim shareholder says merger with Lafarge may collapse
A general view shows Switzerland's Holcim cement production plant in Siggenthal, in this file photo taken August 23, 2007. REUTERS/Christian Hartmann · Reuters · Reuters

ZURICH (Reuters) - A top-10 shareholder in Holcim <HOLN.VX> said on Monday a planned merger with French rival Lafarge <LAFP.PA> could collapse if deal terms are not renegotiated in the Swiss cement maker's favor.

The shareholder, who declined to be named, said Zurich-based Holcim will seek stronger representation on the combined company's board, which had originally been set at seven representatives from both firms.

(Reporting by Oliver Hirt.; Writing by Katharina Bart)