“In a context of industry consolidation, regulators in the EU and elsewhere have recently requested a large amount of additional information and we now expect the regulatory process to extend into the first quarter of 2017,” Chief Executive Erik Fyrwald said in a statement.

“ChemChina and Syngenta remain fully committed to the transaction and are confident of its closure.”

Shares in Basel-based Syngenta (SYT) fell as much as 9% on Monday after the European Commission triggered doubts about state-owned Chinese chemical company ChemChina’s bid for the Swiss group.

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Fyrwald told Reuters that a swamped Commission had not had a chance to provide substantive feedback and he expects the anti-trust watchdog to take its regulatory review to a second phase once the Oct. 28 deadline for fast-track approval passes.

“I think it is likely and we are expecting it, but it is not certain,” he said in a telephone interview, emphasizing that he expects the deal to close around the end of the first quarter of next year.

He dismissed suggestions that the deal could be complicated by a merger of ChemChina and Chinese peer Sinochem.

“We talk to ChemChina regularly on a range of issues, as you can imagine, and they have repeatedly assured us that they are not in any discussions about merging with Sinochem,” he said.

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Syngenta reported third-quarter sales of $2.5 billion, down 3% year on year at constant exchange rates. The average forecast from analysts polled by Reuters was for sales to ease 0.5% to $2.6 billion.

Finance chief Mark Patrick said the company expects an “extremely challenging market” in 2017, given current crop prices, but that margins should still improve.

Shares in Syngenta were seen 0.1% higher in pre-market indications by bank Julius Baer.