China Minsheng Banking (SHA:600016, HKG:1988) agreed to acquire an additional 10% in Shanghai Songjiang Minsheng Rural Bank for 45.5 million yuan, according to a Shanghai bourse filing on Saturday.
Minsheng's Hong Kong shares slipped less than 1% during Monday morning trade.
The lender will buy the stake from Shanghai Jiant Life Technology.
Minsheng currently owns 35% of Songjiang Minsheng Rural Bank.