If you are investing longer term, you should have been watching the chart, already invested on the bottom (purchase price always key) and be sitting pretty. Now isn't the time to invest. WEN hasn't proven it can improve margin and after a big run the risk/reward doesn't make sense. The question now is what portion to take profit and what portion to hold for more gain.
Could it go higher? Sure. But the big run is done (absent a buy-out) IMO
Disclosure: cashed most at $5.54 for about a 25% gain. Happily.