Klaviyo (NYSE: KVYO) officer plans $163K company stock sale

Rhea-AI Filing Summary

Klaviyo, Inc. (KVYO) received a Rule 144 notice from officer Landon Ramon Edmond covering planned sales of up to 8,103 shares of common stock, to be effected through Morgan Stanley Smith Barney LLC. The notice lists an aggregate market value of about $163,275.45 for these shares and reports that 126,937,933 shares of common stock were outstanding as of 08/31/2026. During the prior three months, the reporting person sold 53,473 shares of KVYO common stock for approximately $1,070,178.31 under a Rule 10b5-1 trading plan.

Key Figures

Planned shares to be sold: 8,103 shares of common stock Aggregate market value of planned sale: $163,275.45 Shares outstanding: 126,937,933 shares +4 more

7 metrics

Planned shares to be sold 8,103 shares of common stock Shares covered by the Rule 144 notice for Landon Ramon Edmond

Aggregate market value of planned sale $163,275.45 Indicated value for the 8,103 shares to be sold

Shares outstanding 126,937,933 shares Klaviyo common stock outstanding as of 08/31/2026

Shares sold in past 3 months 53,473 shares 10b5-1 sales for Landon Ramon Edmond on 08/28/2026

Value of shares sold in past 3 months $1,070,178.31 Aggregate value of 53,473 shares sold over the last three months

Planned sale date reference 08/15/2026 Date associated with Restricted Stock Units underlying the planned sale

Filing date 08/31/2026 Date associated with issuer share count and signature

Key Terms

Rule 144, Restricted Stock Units, 10b5-1, Form 144, +1 more

5 terms

Rule 144 regulatory

"See the definition of "person" in paragraph (a) of Rule 144."

Rule 144 is a U.S. securities regulation that sets conditions under which restricted or insider-held shares can be legally resold to the public, such as required holding periods, availability of public information, limits on how much can be sold at once, and certain filing requirements. For investors it matters because it determines when previously locked-up shares can enter the market — like a release valve that can increase supply, affect share price, and signal insider intent.

Restricted Stock Units financial

"Common | 08/15/2026 | Restricted Stock Units | Issuer"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

10b5-1 regulatory

"10b5-1 Sales for LANDON RAMON EDMOND"

A 10b5-1 plan is a pre-set schedule that lets company insiders buy or sell shares according to written instructions made when they do not possess material, nonpublic information. Think of it as a timed automatic payment for stock trades: it helps insiders avoid accusations of trading on secret information and gives outside investors a clearer signal about whether sales are routine or potentially informative about the company’s prospects.

Form 144 regulatory

"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.

Executive Financial Services financial

"Morgan Stanley Smith Barney LLC Executive Financial Services"

FAQ

What does the Form 144 filing disclose for Klaviyo, Inc. (KVYO)?

It discloses that officer Landon Ramon Edmond filed a Rule 144 notice to sell up to 8,103 shares of Klaviyo common stock, with an indicated aggregate market value of about $163,275.45, and reports prior sales over the last three months.

How many KVYO shares are covered by the planned Rule 144 sale?

The notice covers a planned sale of up to 8,103 shares of Klaviyo, Inc. common stock. These shares are tied to Restricted Stock Units and are expected to be sold through Morgan Stanley Smith Barney LLC.

What prior KVYO share sales did Landon Ramon Edmond report in this Form 144?

The filing reports that over the past three months, 53,473 shares of Klaviyo common stock were sold for approximately $1,070,178.31, described as 10b5-1 sales for Landon Ramon Edmond dated 08/28/2026.

What is the reported market value of the KVYO shares to be sold under this Form 144?

The Form 144 lists an aggregate market value of about $163,275.45 for the 8,103 shares of Klaviyo common stock covered by the planned Rule 144 sale.

How many Klaviyo (KVYO) shares were outstanding as referenced in this Form 144?

The filing states that 126,937,933 shares of Klaviyo, Inc. common stock were outstanding as of 08/31/2026; this is a baseline figure, not the amount being sold under the notice.

Through which broker will the KVYO shares in this Form 144 be sold?

The planned sales of Klaviyo, Inc. common stock are to be executed through Morgan Stanley Smith Barney LLC Executive Financial Services, located at 1 New York Plaza, New York, NY.

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

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Available on EDGAR 08/31/2026 - 04:31 PM Accepted by SEC EDGAR 08/31/2026 - 04:30 PM 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	0001991399
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, 6th Floor Boston MASSACHUSETTS 02110
Phone	6172131788
Name of Person for Whose Account the Securities are To Be Sold	LANDON RAMON EDMOND
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

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
Common	Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza 8th Floor New York NY 10004	8103	163275.45	126937933	08/31/2026	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 *
Common	08/15/2026	Restricted Stock Units	Issuer			8103	08/15/2026	N/A

* 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
10b5-1 Sales for LANDON RAMON EDMOND 125 Summer Street, 6th Floor Boston MA 02110	Common	08/28/2026	53473	1070178.31

144: Remarks and Signature

Remarks
Date of Notice	08/31/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	06/01/2026
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	/s/ Landon Ramon Edmond
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)