Founded in 2008 by an Italian group Carlo Tassara, the bank debuted on Warsaw Stock Exchange in 2012 with an offering valued at 2.1 billion Polish złoty, the highest in the exchange's history.[2][3] In 2014, Alior's stock price became part of WIG20 index.[4]
In 2013, the bank attracted controversy when its deputy president mentioned that the bank considers collecting big data of its customers, pulling information from online social networks etc.[5]
Since 2015, the bank commenced a series of mergers and acquisitions, most notably acquiring Meritum Bank (2015) and Bank BPH (2016). In autumn 2014, Alior Bank purchased 97.9% of Meritum Bank. On 19 February 2015 the transaction was finished.
On June 23, 2015, the Polish Financial Supervision Authority authorized the merger of Alior Bank S.A. and Meritum Bank ICB S.A. by transferring all of Meritum Bank's assets to Alior Bank.[6]
In June 2015, State-controlled PZU, Poland's largest insurer agreed to buy a 25.3-percent stake in Alior Bank.[7][8] Currently, the PZU SA Group holds 31.94% of shares of the Alior Bank.[9]
In 2017, Telekom Banking for individual customers was launched in Romania. It is a trade brand of Alior Bank and T-Mobile Romania.[10]
In 2018, the bank became a member of the Blockchain and New Technologies Chamber (Polish: Izba Blockchain i Nowych Technologii) and had been actively supporting initiatives aimed at developing blockchain technology in the country.[11]