Klaviyo, Inc. SEC Filing

KVYO filed a Form 144 notice for a proposed sale of 2,811 Series A shares, with an approximate sale date of 11/11/2025 on the NYSE.

Accepted by SEC EDGAR 11/12/2025 - 07:16 AM EST Learn about SEC filing dates

Rhea-AI Filing Summary

KVYO filed a Form 144 notice for a proposed sale of 2,811 Series A shares, with an approximate sale date of 11/11/2025 on the NYSE. The listed broker is Fidelity Brokerage Services LLC.

The filing also details recent sales over the past three months: Hodgkins LLC sold 67,524 shares for $2,142,377.45 and Hodgkins Trust sold 22,224 shares for $703,493.05 on 09/15/2025; Hodgkins LLC sold 50,920 shares for $1,529,816.71 and Hodgkins Trust sold 8,572 shares for $257,604.18 on 11/10/2025.

The shares to be sold were acquired as Founders Shares on 09/25/2012 as compensation. Shares outstanding were 137856147 at the time listed; this is a baseline figure, not the amount being sold.

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Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0001991125
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	Klaviyo, Inc.
SEC File Number	001-41806
Address of Issuer	125 SUMMER STREET, FLOOR 6 BOSTON MASSACHUSETTS 02110
Phone	800-338-1744
Name of Person for Whose Account the Securities are To Be Sold	Hallen Ed
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Officer
Relationship to Issuer	Director

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Series A	Fidelity Brokerage Services LLC 900 Salem Street Smithfield RI 02917	2811	84331.54	137856147	11/11/2025	NYSE

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Series A	09/25/2012	Founders Shares	Issuer			2811	09/25/2012	Compensation

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
Hodgkins Llc 125 Summer Street, 6th Floor Boston MA 02110	Series A	09/15/2025	67524	2142377.45
Hodgkins Trust 125 Summer Street, 6th Floor Boston MA 02110	Series A	09/15/2025	22224	703493.05
Hodgkins Llc 125 Summer Street, 6th Floor, Boston MA 02110	Series A	11/10/2025	50920	1529816.71
Hodgkins Trust 125 Summer Street, 6th Floor Boston MA 02110	Series A	11/10/2025	8572	257604.18

144: Remarks and Signature

Remarks	Of the shares sold today, 545 shares were sold in the Hodgkins Trust, of which Edward W. Hallen is an account stakeholder and 2266 shares were sold in the Hodgkins Llc, of which Edward W. Hallen is an authorized individual and an account stakeholder. There are trades on 09/15/2025 and 11/10/2025 which also occurred in Hodgkins Trust, and Hodgkins Llc.
Date of Notice	11/12/2025
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	06/12/2025
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	/s/ Gary Redman, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Edward W. Hallen
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)