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): September 30, 2014

Corning Incorporated

(Exact name of registrant as specified in its charter)

Registrant’s telephone number, including area code: 607-974-9000

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:

Corning Incorporated (“Corning” or the “Company”) entered into an Amended and Restated Credit Agreement (the “Amended and Restated Credit Agreement”), dated as of September 30, 2014, which amends and restates the Company’s existing Amended and Restated Credit Agreement dated March 13, 2013 (the “Existing Credit Agreement”).

The Amended and Restated Credit Agreement is with a bank group comprised of JPMorgan Chase Bank, N.A. (“JPMCB”), Citibank, N.A., Bank of America, N.A., Deutsche Bank AG New York Branch, The Bank of Tokyo-Mitsubishi UFJ, Ltd., HSBC Bank USA, National Association, Standard Chartered Bank, Sumitomo Mitsui Banking Corporation, Barclays Bank PLC, Goldman Sachs Bank USA, Wells Fargo Bank, National Association, Bank of China New York Branch, and The Bank of New York Mellon. Under the Amended and Restated Credit Agreement, borrowings are available in Dollars, Sterling, Yen and Euros to Corning and any direct or indirect wholly-owned subsidiary of Corning in a maximum amount outstanding at any one time of $2,000,000,000 ($200,000,000 of which is available for letters of credit) (the “Commitment Amount”). The Commitment Amount may be increased over the term by up to $500,000,000 subject to existing or new lenders committing to fund such increase.

The rate of interest payable under the Amended and Restated Credit Agreement, at Corning’s option, is equal to LIBOR (or EURIBOR in the case of Euro denominated advances) plus a margin ranging from 0.680% to 1.100% or a base rate plus a margin ranging from 0.000% to 0.100%. The actual margin is adjustable based upon the debt ratings issued from time to time with respect to Corning’s unsecured debt by Moody’s Investors Service, Inc. and Standard & Poor’s. For this purpose, the “base rate” is the highest of the rate announced by JPMCB from time to time as its prime rate, the federal funds rate plus 0.5% or the one-month LIBOR plus 1.0%. Corning is also obligated to pay quarterly facilities fees on the aggregate commitments under the Amended and Restated Credit Agreement.

The Amended and Restated Credit Agreement is scheduled to terminate on September 30, 2019 (the “Termination Date”). The Termination Date may be extended by one year on each of September 30, 2015 and September 30, 2016 on Corning’s request and subject to the consent of the lenders. The Amended and Restated Credit Agreement contains affirmative and negative covenants that Corning must comply with, including (a) periodic financial reporting requirements, (b) maintaining a ratio of consolidated debt for borrowed money to consolidated total capital of no greater than 0.50 to 1.00, (c) limitation on liens, (d) limitation on the incurrence of subsidiary indebtedness, and (e) limitation on mergers, as well as other customary covenants. Loans to subsidiaries under the Amended and Restated Credit Agreement will be unconditionally guaranteed by Corning.

The Amended and Restated Credit Agreement provides for customary events of default with corresponding grace periods, including failure to pay any principal or interest when due, failure to perform or observe covenants, bankruptcy or insolvency events and change of control. Upon the occurrence of an event of default, the obligations of the lenders to make advances and issue letters of credit may be terminated, the Company’s obligation to repay advances may be accelerated, and the Company may be required to post cash collateral in the amount of outstanding letters of credit.

At the time of the amendment and restatement, there were no borrowings outstanding under the Existing Credit Agreement and there are no amounts outstanding under the Amended and Restated Credit Agreement.

From time to time, certain of the lenders under the Amended and Restated Credit Agreement and their affiliates provide customary commercial and investment banking services to the Company.

The foregoing description of the material terms of the Amended and Restated Credit Agreement is qualified in its entirety by reference to the Amended and Restated Credit Agreement, which is attached as Exhibit 10.1 to this report and incorporated herein by reference.

As described in Item 1.01 of this report, which is incorporated by reference into this Item 1.02, the Amended and Restated Credit Agreement amends, restates and replaces the Existing Credit Agreement.

The information included in Item 1.01 of this report is incorporated by reference into this Item 2.03.

(d) Exhibits

10.1 Amended and Restated Credit Agreement dated as of September 30, 2014, among Corning Incorporated, JPMorgan Chase Bank, N.A., Citibank, N.A., Bank of America, N.A., Deutsche Bank AG New York Branch, The Bank of Tokyo-Mitsubishi UFJ, Ltd., HSBC Bank USA, National Association, Standard Chartered Bank, Sumitomo Mitsui Banking Corporation, Barclays Bank PLC, Goldman Sachs Bank USA, Wells Fargo Bank, National Association, Bank of China New York Branch, and The Bank of New York Mellon.

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.

Dated: October 3, 2014