California-based EMBA Medical is still working on a $3 million equity funding round, according to recently updated SEC filings.

The company has been flying below the radar for months, with almost no online presence and very little known about its business, but trademark filings say that EMBA develops "medical devices, namely, devices for use in performing chemoembolization and radioembolization procedures."

New SEC documents filed by company secretary Bruce Feuchter put the company about 3-quarters of the way through its 1st and only reported funding round, with 31 unnamed participants.

EMBA has sold about $2.3 million in equity, looking to get another $690,000 in order to close the $3 million round. Minimum investments are listed at $5,000, according to the filing.

The company did not respond to requests for comment.