Someday we'll figure it out. Maybe the A certs are printed on especially attractive paper.
"Series A Preferred Stock (the “Series A”), held by TheraCour Pharma, Inc. which votes at the rate of nine shares of Common Stock per each share of Series A and is convertible into three and one half shares of Common Stock upon a change in control of the Company."
I think if we looked closely at the numbers it might be an issue of maintaining voting control.