A separate filing covers the share sale underwriting agreement between banks and securities firms, led by Citigroup, who will share multi-million euro fees related to the transaction. Deutsche Bank, Goldman Sachs, Barclays, Credit Suisse, JP Morgan, Davy in Dublin and Wells Fargo are among the underwriters of the deal. ARD Holdings and company directors have agreed not to sell any further stock in Ardagh Group for 180 days – in what is known as a lock-up period – after the IPO, unless Citigroup gives consent.