ATRM Holdings, Inc. (OTCPK:ATRM) announced that it has entered into a securities purchase agreement of an unsecured promissory note for gross proceeds of $275,000 on December 14, 2018. The transaction included participation from lender Digirad Corporation (NasdaqGM:DRAD). The note bears interest at 10.0% per annum for the first 12 months of its term, and at 12.0% per annum for the remaining 12 months. All unpaid principal and interest under the Digirad Note is due on December 14, 2020.