BUDAPEST--OTP Bank Nyrt. (OTP.BU), Hungary's largest bank purchased Romania's Millennium Bank from Banco Comercial Portugues S/A (BCP.LB) for 39 million euros ($52.3 million), OTP announced in a stock exchange filing Wednesday.

MAIN FACTS:

- Millennium Bank has a 0.8% market share in Romania with total assets of RON2.83 billion ($860 million).

- In the wake of the acquisition, the market share of OTP Bank Romania will rise to 2.1%, and it will become the 11th largest Romanian bank.

- After the merger, OTP Bank Romania will have a network of 150 branches, 160 ATMs and nearly 400,000 retail and corporate clients.

- OTP expects the final settlement of the integration process to be completed within a year.

Write to Veronika Gulyas at veronika.gulyas@wsj.com; Twitter: VeronikaGulyas1