Rentech, Inc. (NASDAQ: RTK) today issued the following statement regarding the press release issued this morning by Engaged Capital, LLC (“Engaged”) and Lone Star Value Management, LLC (“Lone Star”).

Rentech has a long-standing strategic plan, as discussed most recently during Rentech’s quarterly earnings call on March 11, 2014, to create value for shareholders by executing on opportunities in our wood fibre processing business for significant revenue and EBITDA growth and strong shareholder returns. Our Board of Directors and management team are focused on the successful execution of that strategy. We are always open to constructive input from our shareholders. We will carefully review the presentation issued today by Engaged and Lone Star while we continue to maintain an active dialogue with our shareholders.

About Rentech, Inc.

Rentech, Inc. (www.rentechinc.com) owns and operates wood fibre processing and nitrogen fertilizer manufacturing businesses. The wood fibre processing business consists of the provision of wood chipping services and the manufacture and sale of wood chips, through a wholly-owned subsidiary, Fulghum Fibres, Inc., and the development of wood pellet production facilities. Rentech’s nitrogen fertilizer business consists of the manufacture and sale of nitrogen fertilizer through its publicly-traded subsidiary, Rentech Nitrogen Partners, L.P. (NYSE: RNF).

Safe Harbor Statement

This press release contains forward-looking statements as defined in the Private Securities Litigation Reform Act of 1995 about matters such as: the Company’s opportunities for future growth and shareholder returns. These statements are based on management’s current expectations and actual results may differ materially as a result of various risks and uncertainties. Other factors that could cause actual results to differ from those reflected in the forward-looking statements are set forth in the Company’s prior press releases and periodic public filings with the Securities and Exchange Commission, which are available via Rentech’s website at www.rentechinc.com. The forward-looking statements in this press release are made as of the date of this press release and Rentech does not undertake to revise or update these forward-looking statements, except to the extent that it is required to do so under applicable law.

Additional Information and Where You Can Find It

Rentech, its directors and certain of its executive officers may be deemed to be participants in the solicitation of proxies from shareholders in connection with its annual meeting of shareholders to be held in 2014 (the “2014 Annual Meeting”). Rentech plans to file a proxy statement and white proxy card with the SEC in connection with the solicitation of proxies for the 2014 Annual Meeting (the “2014 Proxy Statement”). Additional information regarding the identity of these potential participants and their direct or indirect interests, by security holdings or otherwise, will be set forth in the 2014 Proxy Statement and other materials to be filed with the SEC in connection with the 2014 Meeting. This information can also be found in Rentech’s definitive proxy statement for its annual meeting of shareholders held in 2013, filed with the SEC on April 30, 2013 (the “2013 Proxy Statement”). To the extent holdings of Rentech’s common stock have changed since the amounts printed in the 2013 Proxy Statement, such changes have been or will be reflected on Statements of Change in Ownership on Form 4 filed with the SEC.

SHAREHOLDERS ARE URGED TO READ THE 2014 PROXY STATEMENT AND WHITE PROXY CARD (INCLUDING ANY AMENDMENTS OR SUPPLEMENTS THERETO), 2013 PROXY STATEMENT AND ANY OTHER RELEVANT DOCUMENTS THAT RENTECH HAS FILED OR WILL FILE WITH THE SEC BECAUSE THEY CONTAIN IMPORTANT INFORMATION.

Shareholders will be able to obtain, free of charge, copies of the 2014 Proxy Statement (when available), 2013 Proxy Statement and any other documents filed or to be filed by Rentech with the SEC in connection with the 2013 Meeting at the SEC’s website (http://www.sec.gov).