A North Bethesda, Maryland-based medical device incubator raised over $1.3 million in equity, according to a filing with the Securities and Exchange Commission.

Weinberg Medical Physics, Inc. filed the Form D on Jan 18, and the company said it issued the stock because of its statutory conversion from an LLC format to chapter C corporation.

According to the company’s website, it has operated over the past 8 years as a medical device incubator where it develops medical imaging and interventional technologies that mature into self-sustaining start-ups.

The company’s research competencies are nanotechnology, ultrafast MRI and magnetic particle drivers, and additive manufacturing of electrical coils.

The company claimed a Rule 506 (b) exemption for the filing. Companies relying on the Rule 506 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.