Klaviyo (KVYO) Form 144 Files to Sell 12,425 Shares on NYSE

Rhea-AI Filing Summary

Form 144 notice indicates a proposed sale of 12,425 shares of Series A common stock on the NYSE with an aggregate market value of $412,510, scheduled approximately for 09/08/2025. The securities were acquired on 09/20/2023 in pre-IPO transactions from Klaviyo, Inc., with the filer reporting acquisition of 169,076 shares on that date. The issuer outstanding share count is listed as 116,897,730. The filing shows no sales in the past three months and includes the standard representation that the seller is not aware of undisclosed material adverse information. Several identifying fields for the filer and issuer are not populated in the provided content.

Positive

• Proposed sale disclosed with specific share count and market value, supporting regulatory transparency
• Acquisition details provided (acquired 09/20/2023 in pre-IPO transactions from Klaviyo, Inc.), which clarifies provenance of the securities
• No sales in past three months reported, simplifying aggregation considerations under Rule 144

Negative

• Filer identification fields are not populated in the provided extract, limiting traceability of the seller
• Issuer name and certain issuer contact fields are missing from the supplied content, reducing context
• Filing does not include a visible signature or dated acknowledgement in the provided text, which hampers verification

Insights

Securities Analyst

TL;DR: Small planned disposition relative to total shares; likely non-material market impact.

The filing reports a proposed sale of 12,425 shares valued at $412,510 against an outstanding base of 116,897,730 shares, representing roughly 0.0106% of outstanding shares, which implies the sale is unlikely to move the market. The shares were acquired in a pre-IPO transaction on 09/20/2023 and no sales were reported in the prior three months. The filing lacks explicit filer identification fields in the provided content, which limits traceability of the selling party and context about lock-up or insider status.

Corporate Governance Expert

TL;DR: Form 144 filed to comply with Rule 144; governance implications are routine, not material here.

The notice documents compliance with Rule 144 for an intended sale on 09/08/2025 and includes the standard seller certification regarding undisclosed material information. From a governance perspective, the absence of filer identifying details in the supplied content constrains assessment of insider status, potential trading plans, or whether a 10b5-1 plan applies. No adverse disclosures or listed related-party transactions are present in the extract.

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 common stock, par value $0.001 per share	Barclays Capital Inc. 745 7th Avenue New York NY 10019	12425	412510.00	116897730	09/08/2025	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 common stock, par value $0.001 per share	09/20/2023	Pre-IPO transactions.	Klaviyo, Inc.			169076	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

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 securities is KVYO proposing to sell?

The filing proposes sale of 12,425 shares of Series A common stock on the NYSE with aggregate market value of $412,510.

When is the approximate sale date listed in the Form 144?

The approximate date of sale is listed as 09/08/2025.

When and how were the shares being sold originally acquired?

The shares were acquired on 09/20/2023 in pre-IPO transactions from Klaviyo, Inc., with 169,076 shares noted as acquired.

Does the filing report any sales in the past three months?

The filing states Nothing to Report for securities sold during the past three months.

How large is the outstanding share base noted in the filing?

The filing lists 116,897,730 shares outstanding for the issuer.