Micell Technologies, a Durham based company, raised an additional $6 million in a private stock offering, according to a Securities and Exchange Commission filing.

The company filed the Form D on April 4. In November 2016, Micell also raised $25.7 million in a private stock offering. It did not disclose what it intended to do with the proceeds.

Micell is owned and operated by Arthur Benvenuto and Daniel Estay. Micell Technologies is a medical device company that has been creating products to enhance drug delivery since 2006.

Their product, MiStent, is a CE-marked drug eluting stent that is available in multiple countries across Europe.

MiStent is currently used in the interventional cardiology market, but has the ability to be adaptable to a broad range of drugs and therapeutic agents.

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 form can be found here.