Security Investment Bank Limited (SIB) is a public limited company incorporated in Pakistan under the Companies Ordinance, 1984. The SIB was incorporated in Pakistan on May 23, 1991 and started its commercial operation on December 31, 1991. Its shares are quoted on Karachi, Lahore and Islamabad Stock Exchanges. The registered office of SIBL is situated at Flat No. 4, 3rd Floor, Al-Baber Centre, Main Markaz, F-8, Islamabad.

SIB is licensed to carry out business of investment finance services as a Non-Banking Finance Company (NBFC) under section 282C of the Companies Ordinance, 1984 and the Non-Banking Finance Companies ( Establishment and Regulation ) Rules, 2003 issued by the Securities and Exchange Commission of Pakistan (SECP) and Non-Banking Finance Companies and Notified Entities Regulations 2008 (previously this was covered under SRO 585(1)/87 dated 13 July 1987, issued by the Ministry of Finance).

SIB is also TREC holder of Karachi Stock Exchange Ltd and member of Pakistan Mercantile Exchange Ltd.