The logo of BioNTech is pictured at Biontech's research laboratory for individualised vaccines against cancer in Mainz, Germany, July 27, 2023. REUTERS/Wolfgang Rattay

FRANKFURT (Reuters) -BioNTech said on Thursday that its collaboration with Pfizer has not changed, when asked to comment on a report that Pfizer is looking to sell its stake in the German biotech firm.

"We continue to have a close and strong collaboration," a spokesperson said in a statement, adding that BioNTech would not be commenting on any capital market activities by Pfizer.

(Reporting by Ludwig Burger, editing by Thomas Escritt)