The preferred shares are very relevant. In fact, this is how DECN funds most of their operating loss.
In 2015 alone, 542,860 Series E preferred were issued, and 353,226 shares were converted into common at .0714 per share. This is the revolving door I was referring to. A net increase of only 189,634 for the Year 2015.
To document the highly dilutive impact to common, the O/S of DECN common stock increased by nearly 34% in 2015 alone.