Capital Research unit reports 6.9% Smurfit Westrock stake (NYSE: SW)

Rhea-AI Filing Summary

Smurfit Westrock plc shareholder update: Capital Research Global Investors reported beneficial ownership of 36,127,677 shares of Smurfit Westrock common stock, representing 6.9% of the 522,186,327 shares believed to be outstanding as of the reporting date.

The firm has sole power to vote and dispose of all these shares and reports no shared voting or dispositive power. It states the position was acquired and is held in the ordinary course of business, without the purpose or effect of changing or influencing control of Smurfit Westrock.

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Accepted by SEC EDGAR 02/12/2026 - 10:25 AM Learn about SEC filing dates

FAQ

What stake in Smurfit Westrock plc does Capital Research Global Investors report?

Capital Research Global Investors reports beneficial ownership of 36,127,677 shares of Smurfit Westrock plc common stock. This holding represents 6.9% of the 522,186,327 shares of common stock the firm believes are outstanding as of the reporting date.

Does Capital Research Global Investors control voting for its Smurfit Westrock plc shares?

Capital Research Global Investors reports sole voting power over 36,127,677 shares of Smurfit Westrock plc common stock. It also reports sole dispositive power over the same 36,127,677 shares, with no shared voting or shared dispositive power disclosed in the filing.

Is Capital Research Global Investors seeking to influence control of Smurfit Westrock plc (SW)?

The filing states the securities were acquired and are held in the ordinary course of business. It expressly says they were not acquired and are not held for the purpose or with the effect of changing or influencing the control of Smurfit Westrock plc.

What type of filing did Capital Research Global Investors submit for Smurfit Westrock plc (SW)?

Capital Research Global Investors submitted an amended Schedule 13G, a beneficial ownership report used for passive holders exceeding certain ownership thresholds. The amendment reflects its 6.9% beneficial ownership of Smurfit Westrock plc common stock as of the stated event date.

Who signed the Smurfit Westrock plc Schedule 13G/A on behalf of Capital Research Global Investors?

The Schedule 13G/A was signed by Jae Won Chung, identified as Vice President and Senior Counsel II of Capital Research and Management Company. The signature is dated February 5, 2026, certifying the accuracy of the ownership information provided.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 1)

Smurfit Westrock plc

(Name of Issuer)

Common Stock

(Title of Class of Securities)

G8267P108

(CUSIP Number)

12/31/2025

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

Rule 13d-1(b)

Rule 13d-1(c)

Rule 13d-1(d)

SCHEDULE 13G

CUSIP No. G8267P108

1

Names of Reporting Persons

Capital Research Global Investors

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 36,127,677.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 36,127,677.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

36,127,677.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

6.9 %

12

Type of Reporting Person (See Instructions)

IA

SCHEDULE 13G

Item 1.
(a)	Name of issuer: Smurfit Westrock plc
(b)	Address of issuer's principal executive offices: BEECH HILL, CLONSKEAGH,, DUBLIN D04 N2R2, Ireland
Item 2.
(a)	Name of person filing: Capital Research Global Investors
(b)	Address or principal business office or, if none, residence: 333 South Hope Street, 55th Fl, Los Angeles, CA 90071
(c)	Citizenship: N/A
(d)	Title of class of securities: Common Stock
(e)	CUSIP No.: G8267P108
Item 3.	If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:
(a)	Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);
(b)	Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);
(c)	Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);
(d)	Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);
(e)	An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
(f)	An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
(g)	A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
(h)	A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
(i)	A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);
(j)	A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J). If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J), please specify the type of institution:
(k)	Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).
Item 4.	Ownership
(a)	Amount beneficially owned: 36,127,677 ** **Capital Research Global Investors ("CRGI") is a division of Capital Research and Management Company ("CRMC"), as well as its investment management subsidiaries and affiliates Capital Bank and Trust Company, Capital International, Inc., Capital International Limited, Capital International Sarl, Capital International K.K., Capital Group Private Client Services, Inc., and Capital Group Investment Management Private Limited (together with CRMC, the "investment management entities"). CRGI's divisions of each of the investment management entities collectively provide investment management services under the name "Capital Research Global Investors." CRGI is deemed to be the beneficial owner of 36,127,677 shares or 6.9% of the 522,186,327 shares believed to be outstanding.
(b)	Percent of class: 6.9 %
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 36,127,677
	(ii) Shared power to vote or to direct the vote: 0
	(iii) Sole power to dispose or to direct the disposition of: 36,127,677
	(iv) Shared power to dispose or to direct the disposition of: 0
Item 5.	Ownership of 5 Percent or Less of a Class.
	Not Applicable
Item 6.	Ownership of more than 5 Percent on Behalf of Another Person.
	Not Applicable
Item 7.	Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
	Not Applicable
Item 8.	Identification and Classification of Members of the Group.
	Not Applicable
Item 9.	Notice of Dissolution of Group.
	Not Applicable

Item 10.

Certifications:

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under ?? 240.14a-11.

SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

Capital Research Global Investors

Signature:	Jae Won Chung
Name/Title:	Vice President and Senior Counsel II, Capital Research and Management Company
Date:	02/05/2026