Shares plunged more than 16 percent on Friday after the news, and closed down over 2.6 percent on Monday. So far this year, the bank's share price has now slipped over 25 percent.
But Treichl admitted the hit the bank was forced to take as a result of government action in Hungary and changes in Romanian National Bank policy on non-performing loans was "pretty dramatic".
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Because of the weaker results in the two country units, the group said it expected to post a net loss of between 1.4-1.6 billion euros ($1.9-2.18 billion) in 2014.
Hungary's decision to take correction on old foreign currency loans and repayment, however, is unlikely to go any further, Triechl said, adding that he hopes the "ordeal is slowly over".
"It is an approach by the Hungarian government which we have experienced during the last years, which we can basically summarize as: 'We're going to milk the cow as much as we can, but we are not going to slaughter it'," he added.