What is the fine-grained topic of the following text: The 8.00% Series A Cumulative Redeemable Preferred Stock is convertible into common stock at a non-fixed conversion rate in connection with a change of control as described in the issuer's Articles of Amendment to the Articles of Incorporation filed with the Securities and Exchange Commission as Exhibit 3.1 to the issuer's Form 8-K on June 25, 2013. Only return the topic.
Convertible Preferred Stock Terms and Conditions