Sec Form 4 Filing - HORRIGAN D GREG @ SILGAN HOLDINGS INC - 2024-02-14

FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person HORRIGAN D GREG 2. Issuer Name and Ticker or Trading Symbol SILGAN HOLDINGS INC [ SLGN] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner _____ Officer (give title below) X __ Other (specify below) See Remarks below. (Last) (First) (Middle) C/O SILGAN HOLDINGS INC., 4 LANDMARK SQUARE, SUITE 400 3. Date of Earliest Transaction (MM/DD/YY) 02/14/2024 (Street) STAMFORD, CT06901 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) __ X __ Form filed by One Reporting Person _____ Form filed by More than One Reporting Person (City) (State) (Zip)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned 1.Title of Security (Instr. 3) 2. Transaction Date (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Stock 26,813 D Common Stock 8,783,749 I Community Property Trust ( 1 ) Common Stock 34,634 I By Trust ( 2 ) Common Stock 1,233,584 I By Horrigan Family Limited Partnership ( 3 )

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities) 1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5) 6. Date Exercisable and Expiration Date (MM/DD/YY) 7. Title and Amount of Underlying Securities (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4) Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other HORRIGAN D GREG C/O SILGAN HOLDINGS INC. 4 LANDMARK SQUARE, SUITE 400 STAMFORD, CT06901 See Remarks below. Signatures /s/ Frank W. Hogan, III, Attorney-in-fact for D. Greg Horrigan 02/16/2024 Signature of Reporting Person Date

Explanation of Responses:

( 1 )These shares of Common Stock are owned by a community property trust of which the reporting person and his spouse are co-trustees and as a result of which the reporting person may be deemed to have shared voting and dispositive power over the shares. ( 2 )These shares of Common Stock are owned by a revocable family trust of which the reporting person is the trustee with sole voting and dispositive power over the shares. ( 3 )These shares of Common Stock are owned by the Horrigan Family Limited Partnership for which the reporting person's spouse is the sole general partner with voting and dispositive power over the shares and as a result of which the reporting person may be deemed to have shared voting and dispositive power over the shares.

Remarks: There is no transaction to report. This is a voluntary exit report only. Since the reporting person's last report, the reporting person retired as a Director of the Issuer effective May 30, 2023. Additionally, effective February 14, 2024, the reporting person's spouse resigned as investment trustee of two family trusts which beneficially own, and still own, an aggregate of 1,742,456 shares of Common Stock. This event is exempt from reporting under Section 16(a) of the Securities Exchange Act of 1934, as amended. As a result of this event, the reporting person's spouse no longer has any voting or dispositive power over such shares. Accordingly, the reporting person no longer indirectly beneficially owns such shares and as a result he is no longer a 10% beneficial owner of the Issuer's Common Stock based on the number of outstanding shares of Common Stock of the Issuer most recently reported by the Issuer.

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).

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