UNITED STATES

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): November 12, 2014 (November 11, 2014)

TREDEGAR CORPORATION

(Exact Name of Registrant as Specified in Charter)

1100 Boulders Parkway, Richmond, Virginia 23225

(Address of Principal Executive Offices) (Zip Code)

(804) 330-1000

(Registrant’s telephone number, including area code)

N/A

(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):

As previously disclosed, on November 11, 2014, Tredegar Corporation (“Tredegar” or the “Company”) presented at Baird’s Industrial Conference and the slides utilized in the Company’s presentation were posted to the Company’s website at www.tredegar.com under the “Investors” tab. The presentation is attached as Exhibit 99.1 to this Current Report and is incorporated by reference into this Item 7.01.

In accordance with General Instruction B.2 of Form 8-K, the information in Item 7.01 of this Current Report on Form 8-K, including the exhibits hereto, shall not be deemed “filed” for the purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liabilities of that section. The information in Item 7.01 of this Current Report on Form 8-K shall not be incorporated by reference into any filing or other document pursuant to the Securities Act of 1933, as amended, except as shall be expressly set forth by specific reference in such filing or document.

A cautionary note about forward-looking statements: Some of the information contained in this Current Report may constitute “forward-looking statements” within the meaning of the “safe harbor” provisions of the Private Securities Litigation Reform Act of 1995. When we use the words “believe,” “estimate,” “anticipate,” “expect,” “project,” “likely,” “may” and similar expressions, we do so to identify forward-looking statements. Such statements are based on our then current expectations and are subject to a number of risks and uncertainties that could cause actual results to differ materially from those addressed in the forward-looking statements. It is possible that our actual results and financial condition may differ, possibly materially, from the anticipated results and financial condition indicated in or implied by these forward-looking statements. Accordingly, you should not place undue reliance on these forward-looking statements. Factors that could cause actual results to differ from expectations include, without limitation: acquired businesses, including Terphane Holdings LLC (“Terphane”) and AACOA, Inc. (“AACOA”), may not achieve the levels of revenue, profit, productivity, or otherwise perform as we expect; acquisitions, including our acquisitions of Terphane and AACOA, involve special risks, including without limitation, diversion of management’s time and attention from our existing businesses, the potential assumption of unanticipated liabilities and contingencies and potential difficulties in integrating acquired businesses and achieving anticipated operational improvements; Film Products is highly dependent on sales to one customer — The Procter & Gamble Company; growth of Film Products depends on its ability to develop and deliver new products at competitive prices; sales volume and profitability of Aluminum Extrusions are cyclical and highly dependent on economic conditions of end-use markets in the U.S., particularly in the construction sector, and are also subject to seasonal slowdowns; our substantial international operations subject us to risks of doing business in foreign countries, which could adversely affect our business, financial condition and results of operations; our future performance is influenced by costs incurred by our operating companies, including, for example, the cost of energy and raw materials; and the other factors discussed in the reports Tredegar files with or furnishes to the SEC from time to time, including the risks and important factors set forth in additional detail in “Risk Factors” in Part I, Item 1A of Tredegar’s 2013 Annual Report on Form 10-K (the “2013 Form 10-K”) filed with the SEC. Readers are urged to review and consider carefully the disclosures Tredegar makes in its filings with the SEC, which include the 2013 Form 10-K.

Tredegar does not undertake, and expressly disclaims any duty, to update any forward-looking statement made in this Current Report to reflect any change in management’s expectations or any change in conditions, assumptions or circumstances on which such statements are based.

To the extent that the financial information portion of the investor presentation attached as Exhibit 99.1 contains non-GAAP financial measures, it also presents both the most directly comparable financial measures calculated and presented in accordance with GAAP and a quantitative reconciliation of the difference between any such non-GAAP measures and such comparable GAAP financial measures. Accompanying the reconciliation is management’s statement concerning the reasons why management believes that presentation of non-GAAP measures provides useful information to investors concerning Tredegar’s financial condition and results of operations. Reconciliations of non-GAAP financial measures are provided in the GAAP Reconciliations section included with the investor presentation attached as Exhibit 99.1 and can also be found within Presentations in the Investors section of its website, www.tredegar.com. Tredegar uses its website as a channel of distribution of material company information. Financial information and other material information regarding Tredegar is posted on and assembled in the “Investors” section of its website.

2

3

SIGNATURES

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

Date: November 12, 2014

4

EXHIBIT INDEX

5