Check out which companies are making headlines after the bell Monday:
Pandora - The Internet radio company filed a 14 million share secondary offering through JPMorgan and Morgan Stanley. Shares tumbled in extended-hours trading.
Outerwall - The movie and game rental kiosk company cut its current-quarter and full-year outlook. In addition, the company said it plans an additional $100 million in buybacks. Shares plunged sharply in extended-hours trading after being temporarily halted following the news. The company was formerly known as Coinstar.
Nvidia - The chipmaker announced it has appointed Colette Kress as its new CFO. Kress was most recently an executive at Cisco. Shares were largely unchanged in extended-hours trading.
Apple - The iPhone maker continued to edge slightly lower in extended-hours trading. The company shed more than 3 percent in the regular session, closing at its lowest level since July 29, following a report that a major Chinese carrier is offering a smaller-than-expected subsidy for the new iPhones.
Mosaic - The fertilizer company lowered its third-quarter production guidance on potash and phosphate, sending shares lower in extended-hours trading. Rival Potash also slipped in extended-hours trading.
Invesco Mortgage Capital - The real estate investment trust cut its quarterly dividend to 50 cents a share from 65 cents a share. Shares declined in extended-hours trading.
PerkinElmer - The biotechnology company was initiated with an "outperform" rating at Piper Jaffray with a $46 price target. Shares ticked slightly higher in extended-hours trading.