The preferred shares are listed in the annual report......
MDBX — Annual Report - Supplemental Information
Part B Share Structure Item 4 The exact title and class of securities outstanding.
Common Stock, $.001 par value, 100,000,000 shares authorized, 14,313,572 shares issued and outstanding as of December 31, 2012. Preferred Stock, $.001 par value, 10,000,000 shares authorized, 10,000,000 shares designated as Series A Preferred, 3,000,000 shares issued and outstanding as of December 31, 2012. CUSIP: 58405D 100 Symbol: MDBX
I think you are confusing MDBX with SEC filers. Pinks don't report the same way. You can check it out with OTC Markets. They are usually easy to speak with......unlike the SEC.