Pan-European exchange operator Euronext on Monday denied it planned to postpone an extraordinary general meeting set for December, at which its shareholders are due to vote on a $10 billion plan to merge with NYSE Group .

We said and we maintain that our general meeting will be held at the start of December, said a spokeswoman at Euronext, which operates the Paris, Amsterdam, Brussels and Lisbon bourses and London's Euronext.liffe derivatives exchange.

The comment came after Germany's Euro am Sonntag magazine, quoting unnamed industry sources, reported that the EGM could be postponed to the first quarter of 2007 as regulators needed more time to study the details of the merger.

The NYSE and Euronext filed merger documents to the U.S. Securities Exchange Commission last week in which they said they planned to mitigate any adverse effects of U.S. law on European operations by creating a Dutch entity to oversee them.

Europeans had expressed concern that strict U.S. accounting and governance rules - such as those under the 2002 Sarbanes-Oxley law - could be extended to Euronext markets through a merger.

Germany's Deutsche Boerse , which operates the Frankfurt stock exchange, has also made an offer to merge with Euronext, but the latter rejected it.