SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

Current Report

Pursuant to Section 13 OR 15(d) of

the Securities Exchange Act of 1934

Date of Report (Date of Earliest Event Reported): February 27, 2013

OMNOVA SOLUTIONS INC.

(Exact Name of Registrant as Specified in its Charter)

Registrant’s telephone number, including area code: (330) 869-4200

Not Applicable

(Former name or former address, if changed since last report.)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):

Item 7.01. Regulation FD Disclosure

In a recently published article, management of OMNOVA Solutions Inc. (the “Company”) indicated that the Company expects 2013 cash from operations to approximate the $40 million average of recent years, with approximately $33 million of capital spending to be nearly offset by depreciation. The Company declined to comment specifically about first quarter 2013 estimates, but noted that it did not expect earnings to equal the unusually strong $.29 per share from the first quarter of 2012.

The information provided above is being furnished under Item 7.01 and shall not be deemed to be “filed” for the purposes of Section 18 of the Securities and Exchange Act of 1934, or otherwise subject to the liabilities of such section, nor shall such information be deemed incorporated by reference in any filing under the Securities Act of 1933 or the Securities and Exchange Act of 1934, except as shall be expressly set forth by specific reference in such a filing.

This report includes “forward-looking statements,” as defined by federal securities laws. These statements, as well as any verbal statements by the Company in connection with this report, are intended to qualify for the protections afforded forward-looking statements under the Private Securities Litigation Reform Act of 1995. Forward-looking statements reflect management’s current expectation, judgment, belief, assumption, estimate or forecast about future events, circumstances or results and may address business conditions and prospects, strategy, capital structure, sales, profits, earnings, markets, products, technology, operations, customers, raw materials, financial condition, and accounting policies among other matters. Words such as, but not limited to, “will,” “may,” “should,” “projects,” “forecasts,” “seeks,” “believes,” “expects,” “anticipates,” “estimates,” “intends,” “plans,” “targets,” “optimistic,” “likely,” “would,” “could” and similar expressions or phrases identify forward-looking statements. All forward-looking statements involve risks and uncertainties. Many risks and uncertainties are inherent in business generally and the markets in which the Company operates or proposes to operate. Other risks and uncertainties are more specific to the Company’s businesses, including businesses that the Company acquires. The occurrence of such risks and uncertainties and the impact of such occurrence is often not predictable or within the Company’s control. Such impacts could adversely affect the Company’s results and, in some cases, such effect could be material. All written and verbal forward-looking statements attributable to the Company or any person acting on the Company’s behalf are expressly qualified in their entirety by the risks, uncertainties and cautionary statements contained herein. Any forward-looking statement speaks only as of the date on which such statement is made, and the Company undertakes no obligation, and specifically declines any obligation, other than that imposed by law, to publicly update or revise any forward-looking statements whether as a result of new information, future events or otherwise.

Risks and uncertainties that may cause actual results to differ materially from expected results include, among others: economic trends and conditions affecting the economy in general and/or the Company’s end-use markets; prices and availability of raw materials including styrene, butadiene, vinyl acetate monomer, polyvinyl chloride, acrylonitrile, acrylics and textiles; ability to increase pricing to offset raw material cost increases; product substitution and/or demand destruction due to product technology, performance or cost disadvantages; high degree of customer concentration and potential loss of a significant customer; supplier, customer and/or competitor consolidation; customer credit and bankruptcy risk; failure to successfully develop and commercialize new products; a decrease in regional customer demand due to reduced in-region production or increased import competition; risks associated with international operations including political unrest, fluctuations in exchange rates, and regulatory uncertainty; failure to successfully implement productivity enhancement and cost reduction initiatives; risks associated with chemical handling and manufacturing and with acts of war, terrorism, natural disasters or accidents, including fires, floods, explosions and releases of hazardous substances; unplanned full or partial suspension of plant operations; ability to comply, and cost of compliance with legislative and regulatory changes, including changes impacting environmental, health and safety compliance and changes which may restrict or prohibit the Company from using or selling certain products and raw materials; losses from the Company’s strategic alliance, joint venture, acquisition, integration and operational activities; rapid inflation in health care costs; loss of key employees and inability to attract and retain new key employees; prolonged work stoppage resulting from labor disputes with unionized workforce; changes in, and significant contributions required to meet, pension plan funding obligations; attacks on and/or failure of the Company’s information systems; infringement or loss of the Company’s intellectual property; litigation and claims against the Company related to products, services, contracts, employment, environmental, safety, intellectual property and other matters; adverse litigation judgments or settlements; absence of or inadequacy of insurance coverage for litigation judgments, settlements or other losses; stock price volatility; availability of financing at anticipated rates and terms; and loan covenant default arising from substantial debt and leverage and the inability to service that debt, including increases in applicable short-term or long-term borrowing rates. For further information on risks and uncertainties, see the Company’s Form 10-K and Form 10-Q filings with the Securities and Exchange Commission.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.