The firm had filed an arbitration case in London last October against the Kurdistan Regional Government (KRG), to obtain payments for products which it had delivered.
The bank made a profit of SAR10.28 million ($26.7 million) in the three-month period to June 30 compared to SAR8.36 million in the same period last year.
The bank said it made SAR1.95 billion ($520 million) in the three months ending June 30, compared with SAR2.12 billion in the same period a year earlier.
Al Mubarak had been serving as the deputy chief executive and chief portfolio management officer of the company since shareholders approved the merger in March 2013.
Authorities said al-Wefaq party leader Sheikh Ali Salman and his political assistant, Khalil al-Marzouq, should have obtained permission before meeting the official.