Check out which companies are making headlines after the bell Tuesday:
Zynga - The social videogame maker's chief operating officer, chief people officer and chief technology officer are expected to leave the company in the latest management shakeup, according to a report from tech website AllThingsD. Shares edged higher in extended-hours trading.
Apple - The iPhone maker continued to edge higher in extended-hours trading after billionaire investor Carl Icahn revealed a large stake in the company, which he believes to be undervalued. Shares soared nearly 5 percent in the regular session.
Cree - The semiconductor materials manufacturers posted earnings of 38 cents a share, excluding one-time items, matching expectations, while revenue was slightly lighter than estimates at $375 million versus estimates of $377 million. In addition, the company handed in current-quarter guidance that were slightly missed projections. Shares tumbled sharply in extended-hours trading.