Klaviyo holder plans sale of 182,210 shares

Klaviyo, Inc. has a shareholder planning to sell up to 182,210 shares of Series A common stock, par value $0.001 per share, through Goldman Sachs & Co. LLC on the NYSE.

Rhea-AI Filing Summary

Klaviyo, Inc. has a shareholder planning to sell up to 182,210 shares of Series A common stock, par value $0.001 per share, through Goldman Sachs & Co. LLC on the NYSE. The proposed sale, valued at $3,345,375.60, is indicated with a reference share count of 126,937,933 shares outstanding as of August 11, 2026.

The filing also lists 1,983,585 equity interests dated September 20, 2023, with a note stating that equity interests in the issuer were purchased pre-IPO.

Key Figures

Planned shares to be sold: 182,210 shares Indicated aggregate value: $3,345,375.60 Shares outstanding reference: 126,937,933 shares +2 more

5 metrics

Planned shares to be sold 182,210 shares Series A common stock covered by the Form 144 notice

Indicated aggregate value $3,345,375.60 Value associated with the 182,210 Series A shares

Shares outstanding reference 126,937,933 shares Series A common stock referenced as of 08/11/2026

Pre-IPO equity interests 1,983,585 Equity interests in the issuer purchased pre-IPO on 09/20/2023

Proposed sale date 08/11/2026 Date associated with the proposed sale on the NYSE

Key Terms

Form 144, Series A common stock, par value, pre-IPO

4 terms

Form 144 regulatory

"144: Filer Information | | | 144: Filer Information"

Form 144 is a document that investors must file with the government when they plan to sell a large number of shares of a company's stock. It helps ensure transparency so everyone knows how many shares are being sold and when, which can impact the stock's price.

Series A common stock financial

"Series A Common stock, par value $0.001 per share"

Series A common stock is a specific class of a company’s ordinary shares issued during an early formal funding round, carrying the ownership rights and voting power tied to that class. For investors it signals an early-stage equity claim with potential upside if the business grows, but also greater risk and typically less liquidity than shares in mature, publicly traded firms—imagine buying a seat on a startup’s team before the company has proven itself.

par value financial

"Series A Common stock, par value $0.001 per share"

Par value is the fixed amount printed on a bond or stock that represents its original value when issued. It’s like the face value of a coin or bill—what the issuer promises to pay back or the starting price of a stock—though it often doesn’t change with market prices. It matters because it helps determine certain financial details, like how much the company will pay back at maturity.

pre-IPO financial

"Equity interests in the Issuer were purchased pre-IPO."

Pre-IPO describes the stage when a privately held company offers shares or commitments to investors before its initial public offering. For investors, pre-IPO deals can provide a chance to buy equity at lower prices—like getting into a house before it goes on the market—but they come with higher uncertainty, limited ability to sell quickly, and the risk that the public listing may be delayed, changed, or never occur.

FAQ

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

What share sale is disclosed for Klaviyo (KVYO) in this Form 144?

A shareholder plans to sell up to 182,210 shares of Klaviyo Series A common stock. The planned sale is to be executed through Goldman Sachs & Co. LLC on the NYSE, with an indicated value of $3,345,375.60.

What is the aggregate value of Klaviyo (KVYO) shares covered by this Form 144?

The shares covered have an indicated aggregate value of $3,345,375.60. This value relates to the planned sale of 182,210 Series A common shares of Klaviyo, Inc., as referenced in the Form 144 disclosure.

How many Klaviyo (KVYO) shares are referenced as outstanding in the Form 144?

The Form 144 references 126,937,933 shares of Klaviyo Series A common stock as outstanding. This figure appears alongside the proposed sale details dated August 11, 2026, and provides context for the relative scale of the planned sale.

Which broker is involved in the proposed Klaviyo (KVYO) share sale?

The proposed sale involves Goldman Sachs & Co. LLC as broker. The firm is listed with its New York address in connection with the planned sale of 182,210 Klaviyo Series A common shares on the NYSE under the Form 144 filing.

What pre-IPO equity activity is mentioned for Klaviyo (KVYO)?

The filing lists 1,983,585 equity interests in Klaviyo dated September 20, 2023. A note states that equity interests in the issuer were purchased pre-IPO, indicating a significant pre-IPO transaction in the company’s equity.

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

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Accepted by SEC EDGAR 08/11/2026 - 06:34 PM EDT Learn about SEC filing dates

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	0001830877
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 ST, 6TH FLOOR BOSTON MASSACHUSETTS 02110
Phone	617-213-1788
Name of Person for Whose Account the Securities are To Be Sold	Summit Partners Co-Invest (Kiwi) L.P.
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	10% Stockholder

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 Common stock, par value $0.001 per share	Goldman Sachs & Co. LLC 200 West Street New York NY 10282	182210	3345375.60	126937933	08/11/2026	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 common stock, par value $0.001 per share	09/20/2023	Pre-IPO Transactions	Klaviyo, Inc.			1983585	09/20/2023	Equity interests in the Issuer were purchased pre-IPO.

* 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

Nothing to Report

144: Remarks and Signature

Remarks
Date of Notice	08/11/2026
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	Adam Hennessey
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)