Sharjah Islamic Bank, formerly known as the National Bank of Sharjah, is a publicly listed Islamic bank headquartered in the emirate of Sharjah in the United Arab Emirates. The bank was established in 1976 and in 2004 converted into a fully Shariah compliant bank. SIB at a glance Established by Emiri decree by His Highness Dr. Sheikh Sultan Bin Mohamed Al Qassimi in 1975, Sharjah Islamic Bank (SIB) transitioned from commercial to Islamic banking in 2002.