Form S-8 SILGAN HOLDINGS INC

As filed with the Securities and Exchange Commission on June 26, 2026

Registration No. 333- 

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM S-8

REGISTRATION STATEMENT

UNDER

THE SECURITIES ACT OF 1933

Silgan Holdings Inc.

(Exact name of registrant as specified in its charter)

Silgan Holdings Inc.

Second Amended and Restated 2004 Stock Incentive Plan

(Full title of the plan)

Frank W. Hogan, III, Esq.

Executive Vice President, General Counsel and Secretary

Silgan Holdings Inc.

601 Merritt 7

Norwalk, Connecticut 06851

(Name and address of agent for service)

(203) 975-7110

(Telephone number, including area code, of agent for service)

Copy to:

Robert J. Rawn, Esq.

Alexander J. May, Esq.

Jenner & Block LLP

1155 Avenue of the Americas

New York, NY 10036

(212) 891-1635

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company or an emerging growth company. See definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act:

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 7(a)(2)(B) of the Securities Act. ☐

EXPLANATORY NOTE

Pursuant to General Instruction E of Form S-8, this registration statement (this “Registration Statement”) registers the offer and sale of an additional 4,000,000 shares of Common Stock, par value $0.01 per share, of Silgan Holdings Inc. (the “Registrant”) issuable under the Silgan Holdings Inc. Second Amended and Restated 2004 Stock Incentive Plan, as amended. The contents of the registration statement on Form S-8 as filed with the Securities and Exchange Commission (the “Commission”) on May  30, 2023 (File No. 333-272264) are incorporated by reference into this Registration Statement.

PART II

INFORMATION REQUIRED IN THE REGISTRATION STATEMENT

Item 3. Incorporation of Documents by Reference.

The following documents filed by the Registrant with the Commission are hereby incorporated by reference in this Registration Statement:

In addition, all documents filed by the Registrant pursuant to Sections 13(a), 13(c), 14 and 15(d) of the Exchange Act (excluding any portions thereof furnished by the Registrant, including but not limited to information furnished under Item 2.02 and Item 7.01 and any exhibits relating to Item 2.02 or Item 7.01 furnished under Item 9.01 of Form 8-K and any certification required by 18 U.S.C. § 1350), on or after the date of this Registration Statement but prior to the filing of a post-effective amendment which indicates that all securities offered have been sold or which deregisters all securities then remaining unsold, shall be deemed to be incorporated by reference in this Registration Statement and to be a part hereof from the date of filing of such documents.

Any statement contained in this Registration Statement or in a document incorporated by reference in this Registration Statement shall be deemed to be modified or superseded for purposes of this Registration Statement to the extent that a statement contained in this Registration Statement or in any subsequently filed document that is deemed to be incorporated by reference in this Registration Statement modifies or supersedes such statement.

Item 8. Exhibits.

Incorporated by reference to the Exhibit Index attached hereto.

SIGNATURES

Pursuant to the requirements of the Securities Act of 1933, the registrant has duly caused this Registration Statement to be signed on its behalf by the undersigned, thereunto duly authorized, in the City of Norwalk, State of Connecticut, on June 26, 2026.

POWER OF ATTORNEY

KNOW ALL PERSONS BY THESE PRESENTS, that each individual whose signature appears below constitutes and appoints Adam J. Greenlee and Frank W. Hogan, III, and each and any of them, as his true and lawful attorney-in-fact and agent, with full power of substitution and resubstitution, for him and in his name, place and stead, in any and all capacities, to sign any and all amendments (including post-effective amendments) to this registration statement, and any registration statement relating to the same offering as this registration statement that is to be effective upon filing pursuant to Rule 462(b) of the Securities Act of 1933, and to file the same, with exhibits thereto, and other documents in connection therewith, with the Securities and Exchange Commission, granting unto each said attorney-in-fact and agent full power and authority to do and perform each and every act and thing requisite and necessary to be done, as fully to all intents and purposes as he might or could do in person, hereby ratifying and confirming all that said attorney-in-fact and agent or either of them, or their or his substitute or substitutes, may lawfully do or cause to be done by virtue hereof.

Pursuant to the requirements of the Securities Act of 1933, this Registration Statement has been signed below by the following persons in the capacities and on the dates indicated.

EXHIBIT INDEX