UPDATE 1-Dunkin' owner Inspire Brands confidentially files for US IPO

Adds details throughout

- Inspire Brands, the owner of fast-food chains Dunkin', Arby's and Jimmy John's, said on Friday it had confidentially filed for an initial public offering in the U.S.

The Atlanta, Georgia-based company plans to use the proceeds to repay debt and other purposes.

The number of shares to be offered and the price range for the proposed offering have not yet been determined, it said.

Confidential filings with the U.S. securities regulator let companies prepare for IPOs away from public market scrutiny.