Capital International takes 9.3% stake in Klaviyo (KVYO)

Rhea-AI Filing Summary

Capital International Investors has disclosed a significant stake in Klaviyo, Inc. The institutional investor reports beneficial ownership of 12,788,846 shares of Klaviyo common stock, representing 9.3% of the company’s outstanding 137,856,147 shares as of 12/31/2025.

Capital International Investors, a division of Capital Research and Management Company and its affiliated investment management entities, has sole voting and sole dispositive power over all reported shares. The securities are described as acquired and held in the ordinary course of business, not for the purpose of changing or influencing control of Klaviyo.

AI-generated analysis. How Rhea-AI works. Not financial advice.

See more from StockTitan in Google Search and AI answers. Adds StockTitan as a preferred source · opens Google

Add on Google Not now

Accepted by SEC EDGAR 02/13/2026 - 04:30 PM Learn about SEC filing dates

FAQ

What percentage of Klaviyo (KVYO) does Capital International Investors own?

Capital International Investors reports beneficial ownership of 9.3% of Klaviyo’s common stock. This corresponds to 12,788,846 shares, based on 137,856,147 shares believed to be outstanding as of December 31, 2025.

How many Klaviyo (KVYO) shares does Capital International Investors control?

Capital International Investors reports beneficial ownership of 12,788,846 Klaviyo common shares. It has sole voting power and sole dispositive power over all of these shares, with no shared voting or shared dispositive authority disclosed.

What type of filing discloses Capital International’s stake in Klaviyo (KVYO)?

The stake is disclosed in a Schedule 13G beneficial ownership report. This form is used by certain institutional investors to report owning more than 5% of a company’s shares when the holdings are not for changing or influencing corporate control.

As of what date is Capital International’s Klaviyo (KVYO) ownership measured?

Capital International Investors’ stake in Klaviyo is measured as of December 31, 2025. At that date, it believes there were 137,856,147 Klaviyo common shares outstanding, of which it beneficially owned 12,788,846 shares, or 9.3%.

Does Capital International Investors share voting power over its Klaviyo (KVYO) shares?

No. The report shows sole voting power over 12,788,846 shares and shared voting power of zero. It likewise lists sole dispositive power over all reported shares and no shared dispositive authority with other parties.

Is Capital International’s Klaviyo (KVYO) stake intended to influence control of the company?

The report states the securities were acquired and are held in the ordinary course of business. It specifies they were not acquired and are not held for the purpose of changing or influencing control of Klaviyo.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

Klaviyo, Inc.

(Name of Issuer)

Common Stock

(Title of Class of Securities)

49845K101

(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. 49845K101

1

Names of Reporting Persons

Capital International 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 12,788,846.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 12,788,846.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

12,788,846.00

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)

9.3 %

12

Type of Reporting Person (See Instructions)

IA

SCHEDULE 13G

Item 1.
(a)	Name of issuer: Klaviyo, Inc.
(b)	Address of issuer's principal executive offices: 125 SUMMER STREET, FLOOR 6, BOSTON, MA 02110
Item 2.
(a)	Name of person filing: Capital International 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.: 49845K101
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: 12,788,846 ** **Capital International Investors ("CII") 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"). CII's divisions of each of the investment management entities collectively provide investment management services under the name "Capital International Investors." CII is deemed to be the beneficial owner of 12,788,846 shares or 9.3% of the 137,856,147 shares believed to be outstanding.
(b)	Percent of class: 9.3 %
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 12,788,846
	(ii) Shared power to vote or to direct the vote: 0
	(iii) Sole power to dispose or to direct the disposition of: 12,788,846
	(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 International Investors

Signature:	Jae Won Chung
Name/Title:	Vice President and Senior Counsel II, Capital Research and Management Company
Date:	02/12/2026