In April, Bank of Ireland launched a €50 million share buyback. It was the first time the bank had implemented such a move in almost 20 years, after it was given the go-ahead by regulators. Last seen in 2004, the move came as the state sold down most of the stake that it had acquired during the financial crisis. It was not alone. AIB announced in May it had completed its €91 million share buyback programme, with the bank purchasing more than 2.2 million shares. Glanbia reported this week that it had spent €148 million so far this year on…