Santander International Debt has made a 1.25 billion notes issue known as the senior debt issuance series 359.
The instruments were admitted to trading on the Irish Stock Exchange.
Citigroup, Mediobanca, Banca IMI, Banco Popular, Bankia, Bankinter, KBC Bank, HSBC, BNP Paribas, Société Générale, and Santander acted as the lead managers on the programme guaranteed by Banco Santander.