ENDRA Life Sciences Inc., an Ann Arbor, Mich.-based healthcare equipment company, plans to sell its common shares in an underwritten public offering.

National Holdings Corp.'s unit National Securities Corp. is acting as sole book-running manager for the offering.

The company, which develops medical imaging technology, also plans to offer the underwriter an option to buy up to an additional 15% of the common shares in the offering to cover over-allotments.

In August, ENDRA received a notice of non-compliance from Nasdaq and the offering could help the company regain compliance with the stock exchange's minimum stockholders' equity listing requirement of $2.5 million.