The story
Predecessors and 1997 merger
Bank Inicjatyw Gospodarczych (BIG SA) was established in 1989. Initially, 98% of shares in it were owned by Warta, Poczta Polska, PZU, Universal and Transakcja foreign trade headquarters (KC PZPR and ZSMP), and 2% were held by natural persons. In 1992 the Bank's shares debuted on the Warsaw Stock Exchange, the first public offering of a financial institution in Poland since the end of the Communist system.
Bank Gdański was one of nine banks spun off in the late 1980s from the National Bank of Poland, the culmination of a sequence of reforms during the 1980s that brought an end to the country's single-tier banking system. It was reorganized in 1991 as a joint-stock corporation.
In 1997 BIG merged with Bank Gdański to form BIG Bank Gdański, and Banco Comercial Português (BCP) acquired a 44.1-percent stake in the merged entity while Eureko acquired a further 15 percent.. A year later, in cooperation with BCP, BIG Bank Gdański launched the Millennium retail service network.
Later developments
By 2018, BCP held 50.1% shares of Bank Millennium.
May 31, 2019 Bank Millennium S.A. took over Euro Bank as a result of acquiring about 99.79% of the shares that were bought from Société Générale. On September 10, 2019, the Polish Financial Supervision Authority (KNF) granted permission to merge banks. On October 1, 2019, there was a legal merger, Bank Millennium and Euro Bank became one bank. In 2021, the banks subsidiary Millennium Bank Hipoteczny (Millennium Mortgage Bank) began operation as a specialized mortgage bank.
From Wikipedia’s article on Bank Millennium, shared under CC BY-SA 4.0.5
