From today's 10K:
"In addition, in January 2018 we entered into a stock purchase agreement with Lummy (Hong Kong), Ltd., or Lummy, under which we agreed to issue and sell to Lummy in a private financing 375,000 shares of common stock for an aggregate purchase price of $1.5 million. In March 2018, we and Lummy amended the stock purchase agreement to reduce the aggregate price for the shares to $450,000. Concurrent with such amendment, we entered into an amendment to our license agreement with Lummy pursuant to which Lummy agreed to pay us a $1.05 million milestone payment."