Stephen Eric Rowland - 15 Dec 2025 Form 4 Insider Report for Klaviyo, Inc. (KVYO)

Reporting relationship: President
Issuer ticker: KVYO
Reported as of: 15 Dec 2025
Net transaction value: -$209,217
SEC form: 4
Accepted by SEC: 17 Dec 2025, 17:21:20 UTC
Prior SEC filing: 18 Nov 2025
Source filing: View source filing
Reporting owner signature: /s/ Landon Edmond, Attorney-in-Fact

Key filing fact

Stephen Eric Rowland filed Form 4 for Klaviyo, Inc. (KVYO) on 17 Dec 2025.

Key facts

This page summarizes Stephen Eric Rowland's Form 4 filing for Klaviyo, Inc. (KVYO).
2 reported transactions and 0 derivative rows are listed below.
Accepted by SEC: 17 Dec 2025, 17:21.

Change

Previous filing in this sequence was filed on 18 Nov 2025.
Current net transaction value: -$209,217.

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 0001639368 Primary reporting owner

Rowland Stephen Eric

Relationship: President
Address: C/O KLAVIYO, INC., 125 SUMMER STREET, 6TH FLOOR, BOSTON
Signature: /s/ Landon Edmond, Attorney-in-Fact
Signature date: 17 Dec 2025

Reported non-derivative transactions

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

KVYO transaction

Series A Common Stock

Sale

Transaction value: $116,647
Shares: -3,913
Change %: -0.89%
Price: $29.81
Shares after: 437,485
Date: 15 Dec 2025
Ownership: Direct
Footnotes: F1, F2

KVYO transaction

Series A Common Stock

Sale

Transaction value: $92,571
Shares: -3,191
Change %: -0.73%
Price: $29.01
Shares after: 434,294
Date: 15 Dec 2025
Ownership: Direct
Footnotes: F1, F3, F4

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

Additional SEC filing notes

Filing notes and footnotes

Rule 10b5-1 trading plan

These transactions were reported as open-market trades under a Rule 10b5-1 plan. The plan lets an insider set trading instructions in advance, which can reduce the risk of trading while in possession of material nonpublic information.

Original filing language: transaction made pursuant to a contract, instruction, or written plan intended to satisfy Rule 10b5-1(c).

Explanation of responses 4 footnotes

Footnote F1

These transactions were effected by the Reporting Person pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 22, 2024.

Footnote F2

The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $29.38 to $30.35 per share. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

Footnote F3

The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $28.83 to $29.33 per share. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

Footnote F4

Consists of (i) 150,495 shares of the Issuer's Series A Common Stock, par value $0.001 per share ("Series A Common Stock"), and (ii) 283,799 unvested restricted stock units awarded under the Issuer's 2023 Stock Option and Incentive Plan, each representing the contingent right to receive one share of Series A Common Stock upon vesting and settlement.