Klaviyo, Inc. SEC Filing

A shareholder of KVYO has filed a notice of proposed sale under Rule 144 to sell 117550 shares of Series A stock through Fidelity Brokerage Services LLC.

Accepted by SEC EDGAR 12/17/2025 - 04:54 PM EST Learn about SEC filing dates

Rhea-AI Filing Summary

A shareholder of KVYO has filed a notice of proposed sale under Rule 144 to sell 117550 shares of Series A stock through Fidelity Brokerage Services LLC. The shares have an aggregate market value of 3568942.25, with 137856147 Series A shares outstanding, and the planned sales are expected to begin around 12/17/2025 on the NYSE.

The securities were originally acquired on 09/25/2012 as founder shares from the issuer in a compensation transaction for 117550 shares. During the past three months, Hodgkins Trust and Hodgkins Llc have already sold several Series A blocks, including 50920 shares for gross proceeds of 1529816.71 on 11/10/2025 and 2266 shares for 67981.00 on 11/11/2025. By signing the notice, the seller represents that they do not know any material adverse information about the issuer’s current or prospective operations that has not been publicly disclosed.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What does KVYO's recent notice of proposed sale disclose?

The notice covers a planned sale of 117550 KVYO Series A shares under Rule 144 through Fidelity Brokerage Services LLC. These shares have an aggregate market value of 3568942.25 and are to be sold on the NYSE.

When are the KVYO shares expected to be sold and on which exchange?

The approximate date of sale listed is 12/17/2025, and the Series A shares are expected to be sold on the NYSE.

How and when were the KVYO shares to be sold originally acquired?

The 117550 Series A shares were acquired on 09/25/2012 as Founder Shares from the issuer in a compensation transaction, rather than for cash.

How many KVYO Series A shares are shown as outstanding?

The notice lists 137856147 Series A shares as the number of shares or other units outstanding at the time of the filing.

What KVYO share sales over the past 3 months are detailed in the notice?

The notice lists several recent Series A sales: Hodgkins Trust sold 8572 shares for 257604.18 and Hodgkins Llc sold 50920 shares for 1529816.71 on 11/10/2025; Hodgkins Trust sold 545 shares for 16350.54 and Hodgkins Llc sold 2266 shares for 67981.00 on 11/11/2025; and on 12/15/2025 Hodgkins Trust sold 157 shares for 4731.06 while Hodgkins Llc sold 600 shares for 18091.50.

What representation does the seller make about KVYO's information in this notice?

By signing, the seller represents that they do not know any material adverse information about the issuer’s current or prospective operations that has not been publicly disclosed.

Which broker is designated to handle the planned KVYO share sales?

The notice designates Fidelity Brokerage Services LLC, located at 900 Salem Street, Smithfield, RI 02917, as the broker for the planned sale of the Series A shares.

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

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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	117550	3568942.25	137856147	12/17/2025	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	Founder Shares	Issuer			117550	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 Trust 125 Summer Street 6th Floor Boston MA 02110	Series A	11/10/2025	8572	257604.18
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	11/11/2025	545	16350.54
Hodgkins Llc 125 Summer Street 6th Floor Boston MA 02110	Series A	11/11/2025	2266	67981.00
Hodgkins Trust 125 Summer Street 6th Floor Boston MA 02110	Series A	12/15/2025	157	4731.06
Hodgkins Llc 125 Summer Street 6th Floor Boston MA 02110	Series A	12/15/2025	600	18091.50

144: Remarks and Signature

Remarks	Today's sale includes 82,672 shares sold from Hodgkins Llc (of which Edward W Hallen is an authorized individual and account stake order) and 34,878 shares sold from Hodgkins Trust (of which Edward W Hallen is an account stakeholder). Sales from the past 3 months also occurred in these accounts.
Date of Notice	12/17/2025
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/ Gerardo Ibarra-Munoz, 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)