Klaviyo President Sells 7,105 Shares Under Trading Plan

Klaviyo, Inc. President Stephen Eric Rowland reported selling a total of 7,105 shares of Series A Common Stock on September 15, 2025, in two sale transactions priced around $31 per share.

Rhea-AI Filing Summary

Klaviyo, Inc. President Stephen Eric Rowland reported selling a total of 7,105 shares of Series A Common Stock on September 15, 2025, in two sale transactions priced around $31 per share. These trades were made under a Rule 10b5-1 trading plan adopted November 22, 2024. Following the sales, he holds 438,621 shares/RSUs of Series A Common Stock, consisting of 129,070 shares and 309,551 unvested restricted stock units.

Insights

Securities Analyst

TL;DR: Insider sold a small portion of holdings via a pre-established 10b5-1 plan; transaction is routine and non-material to outstanding shares.

The reported disposals total 7,105 Series A shares executed on 09/15/2025 under a Rule 10b5-1 plan adopted on 11/22/2024. The seller is the company President, which is material to note for governance transparency, but the filing does not indicate any change in role or unexpected event. The sales were executed across multiple prices with a disclosed weighted-average price and the filer committed to provide breakdowns on request, which supports transparency. No derivative transactions or amendments are reported.

Corporate Governance Expert

TL;DR: Use of a 10b5-1 plan signals preplanned, compliant selling; the disclosure is routine but relevant to monitoring insider behavior.

The reporting person used a documented 10b5-1 trading plan, reducing the likelihood that these sales reflect undisclosed, company-specific developments. The filing clearly states the composition of remaining holdings (issued shares plus unvested RSUs), aiding assessment of true economic ownership. There is no indication of accelerated vesting, option exercises, or other atypical compensation events in this Form 4.

Insider Trade Summary

Net Seller: 7,105 shares

Net Sell 2 txns

Insider Rowland Stephen Eric

Role President

Sold 7,105 shs ($227K)

Type	Security	Shares	Price	Value
Sale	Series A Common Stock	6,905	$31.90	$220K
Sale	Series A Common Stock	200	$31.24	$6K

Holdings After Transaction: Series A Common Stock — 438,621 shares (Direct)

Footnotes (3)

1. 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.
2. F2. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $31.43 to $32.27 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.
3. F3. Consists of (i) 129,070 shares of the Issuer's Series A Common Stock, par value $0.001 per share ("Series A Common Stock"), and (ii) 309,551 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.

Key Figures

Total shares sold: 7,105 shares First sale size and price: 6,905 shares at $31.90 per share Second sale size and price: 200 shares at $31.24 per share +5 more

8 metrics

Total shares sold 7,105 shares Combined sales of Series A Common Stock on September 15, 2025

First sale size and price 6,905 shares at $31.90 per share Primary sale of Series A Common Stock on September 15, 2025

Second sale size and price 200 shares at $31.24 per share Additional sale of Series A Common Stock on September 15, 2025

Trade price range $31.43–$32.27 per share Range of individual transaction prices noted in footnote F2

Post-transaction holdings 438,621 shares/RSUs Series A Common Stock and RSUs held after reported sales

Common share component 129,070 shares Portion of post-transaction position held as Series A Common Stock

RSU component 309,551 RSUs Unvested restricted stock units tied to Series A Common Stock

Trading plan adoption date November 22, 2024 Date the Rule 10b5-1 trading plan was adopted

Key Terms

Rule 10b5-1 trading plan, restricted stock units, weighted average price, contingent right

4 terms

Rule 10b5-1 trading plan regulatory

"Transactions were effected pursuant to a Rule 10b5-1 trading plan adopted on November 22, 2024"

A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.

restricted stock units financial

"Consists of 129,070 shares of Series A Common Stock and 309,551 unvested restricted stock units"

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.

weighted average price financial

"The price reported in Column 4 is a weighted average price"

Weighted average price is the average price of a security where each trade or component is counted according to its size, so bigger trades pull the average more than smaller ones. Think of it like calculating the average cost of a grocery haul where items you bought more of have greater influence on the final per-item cost. Investors use it to understand the true average price paid or received, judge execution quality, and compare trading performance against market movement.

contingent right financial

"Each RSU represents the contingent right to receive one share of Series A Common Stock"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

Who is the insider in Klaviyo (KVYO)'s Form 4 and what did he do?

The insider is Stephen Eric Rowland, President of Klaviyo, Inc., who reported selling 7,105 shares of Series A Common Stock on September 15, 2025. These transactions were executed under a Rule 10b5-1 trading plan adopted on November 22, 2024.

How many KVYO shares did Klaviyo's president sell in this Form 4?

He sold a total of 7,105 shares of Series A Common Stock. The sales occurred in two transactions: 6,905 shares at $31.90 per share and 200 shares at $31.24 per share, as reported for September 15, 2025.

What prices were received for the KVYO shares sold by Klaviyo's president?

Reported sale prices were $31.90 per share for 6,905 shares and $31.24 per share for 200 shares. A footnote adds that individual trades occurred at prices ranging from $31.43 to $32.27 per share, using weighted average reporting.

How many KVYO shares does Stephen Eric Rowland hold after these sales?

After the reported sales, he holds 438,621 shares/RSUs of Series A Common Stock. This consists of 129,070 shares of Series A Common Stock and 309,551 unvested restricted stock units, each RSU representing a contingent right to one share.

Was the KVYO stock sale by Klaviyo's president under a trading plan?

Yes. The Form 4 states the transactions were effected under a Rule 10b5-1 trading plan. That plan was adopted on November 22, 2024, indicating these September 15, 2025 sales followed a pre-arranged trading arrangement.

What type of security did Klaviyo (KVYO)'s president sell in this filing?

He sold Series A Common Stock of Klaviyo, Inc. The total disposition was 7,105 shares in two transactions, while he continues to hold a mix of common shares and 309,551 unvested restricted stock units tied to Series A Common Stock.

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

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Accepted by SEC EDGAR 09/17/2025 - 04:15 PM Learn about SEC filing dates

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

X

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Rowland Stephen Eric

(Last) (First) (Middle)

C/O KLAVIYO, INC.

125 SUMMER STREET, 6TH FLOOR

(Street)

BOSTON MA 02110

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Klaviyo, Inc. [ KVYO ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	President

3. Date of Earliest Transaction (Month/Day/Year)
09/15/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Series A Common Stock	09/15/2025		S(1)		6,905	D	$31.9(2)	438,821	D
Series A Common Stock	09/15/2025		S(1)		200	D	$31.24	438,621(3)	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. 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.

2. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $31.43 to $32.27 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.

3. Consists of (i) 129,070 shares of the Issuer's Series A Common Stock, par value $0.001 per share ("Series A Common Stock"), and (ii) 309,551 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.

Remarks:

	/s/ Landon Edmond, Attorney-in-Fact	09/17/2025
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.