Silbo Inc, a North Carolina-based company, sold $100,000 in a private stock offering, according to a Securities and Exchange Commission filing.

The company filed the Form D on Oct. 11, and it did not disclose what it intended to do with the funds.

Silbo has created a mobile app that allows referees and umpires to browse game opportunities. This allows them to take control of their schedules and build their careers. The app also offers instant online payment and feedback for its users.

Co-founder Brendan Szulik graduated from Duke University in 2011, majoring in linguistics, and is currently earning a M.B.A. from UNC-Chapel Hill’s Kenan-Flagler Business School.

Companies relying on a Reg D exemption do not have to register their offering of securities with the SEC, but they must file what’s known as a Form D electronically with the SEC after they first sell their securities.\

The file can be found here.