ZURICH (Reuters) - A top-10 shareholder in Holcim (>> Holcim Ltd) said on Monday a planned merger with French rival Lafarge (>> LAFARGE) 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)

Stocks treated in this article : LAFARGE, Holcim Ltd