Tsakos redeem another preferred

Over the years, Tsakos Energy Navigation (TNP) have issued several flavors of preferred shares. During a shorter time-frame, the company has also redeemed some of those flavors e.g. TNP-PC. TNP just announced plans to redeem the Series D
TEN Ltd. to Redeem all of its 8.75% Series D Cumulative Redeemable Perpetual Preferred Shares (yahoo.com)

Have a small stake in the Series E, or TNP-PE.