Diadexus, Inc. (OTCPK:DDXS) announced that it has entered into a securities purchase agreement for private placement of up to 261,780 common shares at a price of $3.82 per share for gross proceeds of $1,000,000 on September 4, 2015. The transaction included participation from new investor OriGene Technologies, Inc. The company has issued securities pursuant to exemption provided under Regulation D.