Mattersight Files Amendment to S-3 Registration Statement

CHICAGO, IL--(Marketwire - May 18, 2012) - Mattersight Corporation (NASDAQ: MATR) today announced that it filed an amendment to its registration statement on Form S-3, which was originally filed with the Securities and Exchange Commission on March 16, 2012 related to the registration of shares issued in a private placement to IGC Fund VI, LP (which has not indicated when it intends to make sales, if at all). The purpose of the amendment is to respond to comments to the Form S-3 made by the Securities and Exchange Commission, and does not reflect the registration of any new shares. Following completion of review by the Securities and Exchange Commission, the Company expects to request effectiveness of the Form S-3 registration statement and file a final prospectus.

A registration statement relating to these securities has been filed with the Securities and Exchange Commission but has not yet become effective. The shares may not be sold nor may offers to buy be accepted prior to the time the registration statement becomes effective. This press release shall not constitute an offer to sell or the solicitation of an offer to buy, nor shall there be any sale of the shares, in any state or jurisdiction in which such an offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any such state or jurisdiction. A copy of the original registration statement, today's amendment, and all other Securities and Exchange Commission filings made by the Company can be obtained free of charge by visiting the Securities and Exchange Commission website at www.sec.gov.

Safe Harbor for Forward-Looking Statements

Statements in this press release that are not historical facts are "forward-looking statements" that are made pursuant to the safe harbor provisions of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934. These forward-looking statements, which may be identified by use of words such as "plan," "may," "might," "believe," "expect," "intend," "could," "would," "should," and other words and terms of similar meaning, involve risks and uncertainties that could cause actual results to differ materially from those described in the forward-looking statements. In addition to other factors and matters contained or incorporated in this document, important factors that could cause actual results or events to differ materially from those indicated by such forward-looking statements include, among other things, the risks discussed under Item 1A "Risk Factors" in our Annual Report on Form 10-K for the fiscal year ended December 31, 2011 and in our other reports filed with the Securities and Exchange Commission from time to time. You can locate these filings on the Investor Relations page of Mattersight's website, www.Mattersight.com. Statements included or incorporated by reference into this press release are based upon information known to Mattersight as of the date of this press release, and the company assumes no obligation to publicly revise or update any forward-looking statement for any reason.

About Mattersight

Mattersight is a leader in enterprise analytics focused on customer and employee interactions and behaviors. Mattersight's Behavioral Analytics service captures and analyzes customer and employee interactions, employee desktop data, and other contextual information to improve operational performance and predict future customer and employee outcomes. Mattersight's analytics are based on millions of proprietary algorithms and the application of unique behavioral models. The company's SaaS+ delivery model combines analytics in the cloud with deep customer partnerships to drive significant business value. Mattersight's applications are used by leading companies in Healthcare, Insurance, Financial Services, Telecommunications, Cable, Utilities, and Government. See What Matters™ by visiting www.Mattersight.com.