Check out the companies making headlines after the bell Wednesday:
Shares of First Solar tanked after the company announced 2016 financial guidance that disappointed investors on the revenue end. The company is expecting revenue of $3.9 billion to $4.1 billion, compared to consensus estimates of $4.10 billion, according to Thomson Reuters. Guidance for earnings per share came in at a range of $4 to $4.50, beating estimates for $3.98.
Solar power systems company, SunPower, was down on hopes it can raise $350 million through a private offering of convertible debentures.
Avon moved down on a Wall Street Journal report that two of the company's top executives will leave the troubled cosmetics company.
Shares of both Dow Chemical and DuPont moved in after-hours trading on earlier news that the companies are expected to announce a mega-merger by Thursday. Sources told CNBC that a potential tie-up between the storied chemicals behemoths would be structured as a merger of equals.