Retail giant Seven & I Holdings Co. plans to close four underperforming Ito Yokado department stores by the end of next February, industry sources said Saturday.

The four stores are in Tomakomai, Hokkaido, Ishinomaki, Miyagi Prefecture, Shiojiri, Nagano Prefecture and Fuji, Shizuoka Prefecture, the sources said.

Seven & I intends to revamp around 10 percent of its approximately 180 Ito Yokados, including through renovating sales floors and reviewing business operations.

However, if these efforts fail to improve performance, it may consider additional closures, the sources said.