On December 20, 2012, Vicki Holt, President and CEO of Spartech Corporation (the "Company"), sent an email to the Company's employees relating to the Company's fiscal year 2012 results and the proposed merger transaction with PolyOne Corporation. Ms. Holt attached to the email a letter from Stephen Newlin, Chairman, President and Chief Executive Officer of PolyOne Corporation, discussing certain matters related to the proposed transaction. Copies of the email and the letter are attached to this Current Report on Form 8-K as Exhibits 99.1 and 99.2, respectively, and are incorporated into this Item 8.01 by reference.

The Company will post this Form 8-K on its Internet website at www.spartech.com. References to the Company's website address are included in this Form 8-K and the press release only as inactive textual references and the Company does not intend them to be active links to its website. Information contained on the Company's website does not constitute part of this Form 8-K.

Additional Information

In connection with the proposed merger transaction, PolyOne Corporation filed with the SEC a registration statement on Form S-4 that includes a proxy statement of Spartech and a prospectus of PolyOne, each subject to completion.
SPARTECH STOCKHOLDERS ARE ENCOURAGED TO READ THE REGISTRATION STATEMENT AND ANY OTHER RELEVANT DOCUMENTS FILED WITH THE SEC, INCLUDING THE FINAL PROXY STATEMENT/PROSPECTUS, WHEN IT BECOMES AVAILABLE, BECAUSE IT WILL CONTAIN IMPORTANT INFORMATION ABOUT THE PROPOSED MERGER. The final proxy statement/prospectus will be mailed to stockholders of Spartech. Investors and security holders will be able to obtain the documents free of charge at the SEC's website, www.sec.gov, from Spartech at its website, www.spartech.com, or 120 S. Central Avenue, Suite 1700, Clayton, MO 63105, Attention: Corporate Secretary, or from PolyOne at its website, www.polyone.com, or 33587 Walker Road, Avon Lake, Ohio 44012, Attention: Corporate Secretary.

Participants in Solicitation

Spartech and PolyOne and their respective directors and executive officers may be deemed to be participants in the solicitation of proxies in respect of the proposed merger. Information concerning Spartech's participants is set forth in the proxy statement, dated January 24, 2012, for Spartech's 2012 Annual Meeting of Stockholders as filed with the SEC on Schedule 14A and Spartech's current report on Form 8-K, as filed with the SEC on March 16, 2012. Information concerning PolyOne's participants is set forth in the proxy statement, dated March 23, 2012, for PolyOne's 2012 Annual Meeting of Stockholders as filed with the SEC on Schedule 14A and PolyOne's current reports on Form 8-K, as filed with the SEC on May 11, 2012 and September 25, 2012. Additional information regarding the interests of participants of PolyOne and Spartech in the solicitation of proxies in respect of the proposed merger will be included in the registration statement and proxy statement/prospectus and other relevant materials to be filed with the SEC when they become available. This communication does not constitute an offer to sell or the solicitation of an offer to buy any securities, nor shall there be any sale of securities in any jurisdiction in which such offer, solicitation, or sale would be unlawful prior to registration or qualification under the securities laws of any such jurisdiction.

Item 8.01. Other Events.

(d) Exhibits

Exhibit Number Description

99.1           Email from Vicki Holt to Spartech Corporation Employees dated
               December 20, 2012.
99.2           Letter from Stephen Newlin to Spartech Corporation employees dated
               December 20, 2012.