Jersey Mike’s has confidentially filed for an initial public offering, the company said on Monday.

The announcement comes more than a year after Blackstone bought a majority stake in the sandwich chain in a deal that reportedly valued Jersey Mike’s at roughly $8 billion.

After the Blackstone deal closed, Jersey Mike’s tapped former Wingstop

CEO Charlie Morrison to helm the company. Morrison led the chicken wing chain for a decade, ushering it through its own IPO and a period of historic growth.

With more than 3,000 locations nationwide, Jersey Mike’s is the second-largest hoagie sandwich chain in the U.S., trailing only Subway.