This pushes IFM Global Infrastructure Fund's stake in Flughafen Wien to 43.44%. It is already the single largest shareholder of the Vienna-based firm.

Flughafen Wien had reiterated last January its call not to accept IFM's offer of 34 euros per share, deeming the valuation too low and the potential delisting of the Vienna Stock Exchange contrary to its interests.

(Reporting by Tristan Chabba in Gdansk; editing by Matthias Williams)