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 9, 2013

SILGAN HOLDINGS INC.

(Exact name of Registrant as specified in its charter)

Registrant’s telephone number, including area code: (203) 975-7110

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:

Section 1 – Registrant’s Business and Operations

On September 9, 2013, Silgan Holdings Inc., or the Company, completed the issuance and sale of $300 million of its 5 ¹⁄₂% Senior Notes due 2022 (the “Notes”) in a previously announced private placement in reliance on Rule 144A and Regulation S under the Securities Act of 1933, as amended. The Notes were sold pursuant to that certain Purchase Agreement, dated September 4, 2013, among the Company and Merrill Lynch, Pierce, Fenner & Smith Incorporated, Wells Fargo Securities, LLC, Citigroup Global Markets Inc., Goldman, Sachs & Co. and Deutsche Bank Securities Inc., as representatives of the initial purchasers named therein (the “Initial Purchasers”), which Purchase Agreement was filed by the Company with its Current Report on Form 8-K filed on September 6, 2013. The Notes were issued pursuant to, and are governed by, that certain Indenture, dated as of September 9, 2013, by and between the Company and U.S. Bank National Association, as trustee (the “Indenture”).

The Company used the net proceeds of approximately $294.3 million from the sale of the Notes, after deducting the Initial Purchasers’ discount and estimated offering expenses, to repay outstanding revolving loans under its senior secured credit agreement.

The Notes are general senior unsecured obligations of the Company and rank equally in right of payment with the Company’s existing and future unsecured unsubordinated indebtedness, including its existing 5% Senior Notes due 2020, and ahead of the Company’s existing and future subordinated debt. In addition, the Notes are effectively subordinated to all of the Company’s secured debt to the extent of the assets securing such debt, including indebtedness under its senior secured credit agreement. None of the Company’s subsidiaries are initially guaranteeing the Notes, and therefore the Notes are structurally subordinated to the indebtedness and other liabilities (including trade payables) of the Company’s subsidiaries.

The Notes will bear interest at a rate of 5 ¹⁄₂ percent per annum. The Indenture provides that interest on the Notes is payable semiannually in cash in arrears on February 1 and August 1 of each year, beginning on February 1, 2014, and the Notes mature on February 1, 2022.

Under the Indenture, the Company has the right to redeem the Notes, in whole or in part, at any time on or after August 1, 2017 initially at 102.750% of their principal amount, plus accrued and unpaid interest to the redemption date, declining ratably annually to 100% of their principal amount, plus accrued and unpaid interest to the redemption date, on or after August 1, 2019. Pursuant to the Indenture, at any time before August 1, 2017, the Company also has the right to redeem the Notes, in whole or in part, at a redemption price equal to 100% of their principal amount plus a make-whole premium as provided in the Indenture, together with accrued and unpaid interest to the redemption date. In addition, before August 1, 2016, the Company has the right to redeem up to 35% of the aggregate principal amount of outstanding Notes with the proceeds from sales of certain kinds of capital stock of the Company at a redemption price equal to 105.500% of their principal amount, plus accrued and unpaid interest to the redemption date. In the event of a Change of Control (as defined in the Indenture), each holder of the Notes has the right to require the Company to purchase such holder’s Notes at a price of 101% of their principal amount, plus accrued and unpaid interest to the date of purchase.

The Indenture contains certain covenants which, among other things, limit (i) the Company’s ability and the ability of its restricted subsidiaries to create liens and engage in sale and leaseback transactions; (ii) the Company’s ability to consolidate, merge or sell all or substantially all of its assets unless the Company is the surviving corporation or the surviving corporation or purchaser is a U.S. entity and assumes the obligations under the Notes and the Indenture; and (iii) the ability of the Company’s restricted subsidiaries to guarantee certain indebtedness unless such restricted subsidiaries also guarantee the Notes as provided in the Indenture. Such covenants are subject to a number of important exceptions and qualifications set forth in the Indenture.

The Indenture also contains certain customary events of default, including failure to make payments in respect of the principal amount of the Notes, failure to make payments of interest on the Notes when due and payable which continues for a period of 30 days, failure to comply with certain covenants and agreements for 30 days after notice thereof and certain events of bankruptcy or insolvency. An event of default under the Indenture will allow the trustee or the holders of at least 25% in aggregate principal amount of the then outstanding Notes to declare the principal of, premium, if any, and accrued and unpaid interest on the Notes to be due and payable, or in the case of events of default involving bankruptcy or insolvency, such principal, premium, if any, and accrued and unpaid interest on the Notes will become immediately due and payable without action from the trustee or any holder.

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The foregoing description of the Indenture and the Notes does not purport to be complete and is qualified in its entirety by reference to the full text of the Indenture and the Form of Note, which are attached as Exhibits 4.1 and 4.2, respectively, to this Current Report on Form 8-K and incorporated by reference herein.

In addition, on September 9, 2013, the Company entered into that certain Registration Rights Agreement with Merrill Lynch, Pierce, Fenner & Smith Incorporated, Wells Fargo Securities, LLC, Citigroup Global Markets Inc., Goldman, Sachs & Co. and Deutsche Bank Securities Inc. (the “Registration Rights Agreement”). Pursuant to the Registration Rights Agreement, the Company has agreed to use its best efforts to (i) file and cause to become effective a registration statement for a registered offer to exchange the Notes for senior unsecured notes of the Company with terms identical to the Notes and consummate such exchange offer within 360 days after September 9, 2013 or (ii) under certain circumstances, file a shelf registration statement for registered resales of the Notes and to keep such shelf registration statement effective for up to one year. If within 360 days after September 9, 2013 the exchange offer referred above is not consummated or a shelf registration statement is not declared effective, the annual interest rate borne by the Notes will be increased by 0.5% per annum until the exchange offer is consummated or a shelf registration statement is declared effective.

The foregoing description of the Registration Rights Agreement does not purport to be complete and is qualified in its entirety by reference to the full text of the Registration Rights Agreement, which is attached as Exhibit 4.3 to this Current Report on Form 8-K and incorporated by reference herein.

Section 2 – Financial Information

The information set forth in Item 1.01 above is incorporated by reference into this Item 2.03.

Section 9 – Financial Statements and Exhibits

Item 9.01. Financial Statements and Exhibits.

(d) Exhibits

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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.

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Index to Exhibits

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