Hallen Ed - 11 Sep 2025 Form 4 Insider Report for Klaviyo, Inc. (KVYO)

Reporting relationship: Director, 10%+ Owner
Issuer ticker: KVYO
Reported as of: 11 Sep 2025
Net transaction value: $0
SEC form: 4
Accepted by SEC: 12 Sep 2025, 18:08:57 UTC
Prior SEC filing: 20 Sep 2023
Next SEC filing: 17 Sep 2025
Source filing: View source filing
Reporting owner signature: /s/ Landon Edmond, Attorney-in-Fact

Key filing fact

Hallen Ed filed Form 4 for Klaviyo, Inc. (KVYO) on 12 Sep 2025.

Key facts

This page summarizes Hallen Ed's Form 4 filing for Klaviyo, Inc. (KVYO).
5 reported transactions and 1 derivative row are listed below.
Accepted by SEC: 12 Sep 2025, 18:08.

Change

Previous filing in this sequence was filed on 20 Sep 2023.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001991125 Primary reporting owner

Hallen Ed

Relationship: Director, 10%+ Owner
Address: C/O KLAVIYO, INC. 125 SUMMER STREET, 6TH FLOOR, BOSTON
Signature: /s/ Landon Edmond, Attorney-in-Fact
Signature date: 12 Sep 2025

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

KVYO transaction

Series A Common Stock

Conversion of derivative security

Transaction value
Shares: +990,000
Change %
Price
Shares after: 990,000
Date: 11 Sep 2025
Ownership: Direct
Footnotes: F1

KVYO transaction

Series A Common Stock

Gift

Transaction value: $0
Shares: -990,000
Change %: -100%
Price: $0.000000
Shares after: 0
Date: 11 Sep 2025
Ownership: Direct
Footnotes: F2

KVYO transaction

Series A Common Stock

Gift

Transaction value: $0
Shares: +200,000
Change %
Price: $0.000000
Shares after: 200,000
Date: 11 Sep 2025
Ownership: By Hodgkins Trust
Footnotes: F2, F3

KVYO transaction

Series A Common Stock

Gift

Transaction value: $0
Shares: +790,000
Change %
Price: $0.000000
Shares after: 790,000
Date: 11 Sep 2025
Ownership: By Hodgkins LLC
Footnotes: F2, F4

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

KVYO transaction Derivative

Series B Common Stock

Conversion of derivative security

Transaction value: $0
Shares: -990,000
Change %: -3%
Price: $0.000000
Shares after: 31,999,106
Date: 11 Sep 2025
Ownership: Direct
Underlying class: Series A Common Stock
Underlying amount: 990,000
Exercise price
Footnotes: F1

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 4 footnotes

Footnote F1

Each share of the Issuer's Series B Common Stock, par value $0.001 per share ("Series B Common Stock"), is convertible at any time at the option of the holder into one share of the Issuer's Series A Common Stock, par value $0.001 per share ("Series A Common Stock"), and will automatically convert into one share of Series A Common Stock upon the occurrence of certain events as set forth in the Issuer's certificate of incorporation. The Series B Common Stock has no expiration date.

Footnote F2

On September 11, 2025, the Reporting Person transferred 200,000 shares of Series A Common Stock to Hodgkins Trust and 790,000 shares of Series A Common Stock to Hodgkins LLC for estate planning purposes, in each case for no consideration.

Footnote F3

Shares are owned directly by Hodgkins Trust for the benefit of the Reporting Person and the Reporting Person's family, and of which the trustee is an independent institution. The Reporting Person disclaims Section 16 beneficial ownership of such shares except to the extent of his pecuniary interest therein, if any, and this report shall not be deemed to be an admission that he has beneficial ownership of such shares for Section 16 or any other purpose.

Footnote F4

Shares held by Hodgkins LLC, of which the Reporting Person serves as manager. The Reporting Person disclaims Section 16 beneficial ownership of such shares except to the extent of his pecuniary interest therein, if any, and this report shall not be deemed to be an admission that he has beneficial ownership of such shares for Section 16 or any other purpose.