[144] Klaviyo, Inc. SEC Filing

Rhea-AI Filing Summary

Klaviyo, Inc. (KVYO) filed a Form 144 reporting a proposed sale of restricted shares by an insider. The notice covers 3,413 Series A shares with an aggregate market value of $109,898.60 against 116,897,730 shares outstanding. The filing lists an approximate sale date of 09/10/2025 on the NYSE. The shares were acquired on 06/10/2025 through restricted stock vesting as compensation and payment was recorded on that date. The filer reports no securities sold in the past three months and includes the standard representational statement about material nonpublic information.

Positive

• Full disclosure of acquisition date, nature of acquisition, and intended sale date, meeting Rule 144 requirements
• Securities arose from restricted stock vesting, indicating compensation-related issuance rather than unexpected liquidation

Negative

• None.

Insights

Securities Compliance Officer

TL;DR: Routine insider sale notice for recently vested restricted shares; complies with Rule 144 disclosure requirements.

The Form 144 documents a proposed sale of 3,413 Series A shares arising from restricted stock vesting and reported as compensation. The filing specifies the NYSE as the intended venue and states there were no prior sales in the last three months, which aligns with aggregation rules. From a compliance perspective, the notice appears complete for Rule 144 purposes: acquisition date, nature of acquisition, amount, and intended sale date are provided, plus the representational language regarding material nonpublic information.

Financial Analyst

TL;DR: Small insider sale relative to outstanding shares; immaterial to company capitalization or market impact.

The 3,413-share proposed sale represents a negligible portion of the 116,897,730 shares outstanding and an aggregate value of $109,898.60. Given the small size relative to total float, this transaction is unlikely to affect market dynamics or company valuation. The shares were acquired via restricted stock vesting as compensation on 06/10/2025, suggesting routine employee equity realization rather than a material disposition.

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

144: Issuer Information

Name of Issuer

SEC File Number

Address of Issuer

Phone

Name of Person for Whose Account the Securities are To Be Sold

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

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	3413	109898.60	116897730	09/10/2025	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	06/10/2025	Restricted Stock Vesting	Issuer			3413	06/10/2025	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

Nothing to Report

144: Remarks and Signature

Remarks

Date of Notice

Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1

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

ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)

FAQ

What did Klaviyo (KVYO) report on this Form 144?

The filing reports a proposed sale of 3,413 Series A shares valued at $109,898.60 with an approximate sale date of 09/10/2025 on the NYSE.

How were the securities acquired according to the filing?

The securities were acquired on 06/10/2025 through restricted stock vesting and the payment nature is listed as compensation.

Does the Form 144 show prior sales by the filer in the past three months?

No. The filing states "Nothing to Report" for securities sold during the past three months.

What exchange is listed for the proposed sale?

The filing lists the NYSE as the securities exchange where the sale is intended.

Is there any representation about material nonpublic information?

Yes. The person for whose account the securities are to be sold represents they do not know any material adverse information about the issuer that has not been publicly disclosed.