NN is trading 7% up at $4.29 in after-hours trading; its preferred-stock redemption is the clearest reported catalyst, although reports do not explicitly attribute the move to it. - NN closed at $4.01 on October 8, when it announced redemption of all 18,400 remaining Series D preferred shares for approximately $30.7 million, removing preferred stock from its balance sheet. - The redemption used proceeds from its October 5 private placement and included a $5.0 million incentive from the sole holder.