Klaviyo (KVYO) Chief Legal Officer sells 14,366 shares in 10b5-1 trade

Rhea-AI Filing Summary

Klaviyo, Inc.'s Chief Legal Officer Edmond Landon sold 14,366 shares of Series A Common Stock in an open-market transaction. The sale on March 12, 2026 was at a weighted-average price of $20.15 per share, with individual trade prices ranging from $20.00 to $20.45.

These transactions were made under a pre-arranged Rule 10b5-1 trading plan adopted on August 21, 2025. After the sale, Landon holds 312,362 equity-based interests, consisting of 83,955 shares of Series A Common Stock and 228,407 unvested restricted stock units that each represent the right to receive one share upon vesting and settlement.

Insights

Equity Markets Analyst

Routine 10b5-1 sale by Klaviyo CLO, small versus remaining stake.

Edmond Landon, Chief Legal Officer of Klaviyo, Inc., executed an open-market sale of 14,366 Series A Common shares at a weighted-average price of $20.15 on March 12, 2026. Trade prices ranged from $20.00 to $20.45 per share.

The sale was carried out under a pre-established Rule 10b5-1 trading plan adopted on August 21, 2025, indicating it was pre-planned rather than opportunistic. Following the transaction, Landon retains 83,955 shares plus 228,407 unvested RSUs, for a total visible position of 312,362 equity interests.

Given the relatively modest number of shares sold compared with his remaining holdings and the 10b5-1 framework, this looks like a routine liquidity event with limited informational value about management’s outlook. Future company filings may provide additional context on any further plan-driven sales.

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^*

Edmond Landon

(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)
	Chief Legal Officer

3. Date of Earliest Transaction (Month/Day/Year)
03/12/2026

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	03/12/2026		S(1)		14,366	D	$20.15(2)	312,362(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 August 21, 2025.

2. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $20.00 to $20.45 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) 83,955 shares of the Issuer's Series A Common Stock, par value $0.001 per share ("Series A Common Stock"), and (ii) 228,407 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	03/13/2026
	** 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.

FAQ

What insider transaction did Klaviyo (KVYO) report for Edmond Landon?

Klaviyo reported that Chief Legal Officer Edmond Landon sold 14,366 shares of Series A Common Stock. The open-market sale occurred on March 12, 2026 at a weighted-average price of $20.15 per share, with individual trades ranging from $20.00 to $20.45.

Was the Klaviyo (KVYO) insider sale made under a Rule 10b5-1 trading plan?

Yes. The filing states the transactions were executed under a Rule 10b5-1 trading plan adopted by Edmond Landon on August 21, 2025. Such plans are pre-arranged trading programs, typically designed to allow scheduled share sales independent of day-to-day market conditions.

How many Klaviyo (KVYO) shares did Edmond Landon hold after the reported sale?

After the sale, Edmond Landon’s reported position totaled 312,362 equity-based interests. This consists of 83,955 shares of Klaviyo’s Series A Common Stock and 228,407 unvested restricted stock units, each RSU representing the contingent right to receive one share upon vesting and settlement.

What price range did the Klaviyo (KVYO) insider sale cover?

The weighted-average sale price was reported as $20.15 per share. Footnote disclosure explains the 14,366 shares were sold in multiple transactions at prices ranging from $20.00 to $20.45 per share, with full trade-by-trade details available on request from relevant parties.

What role does Edmond Landon hold at Klaviyo (KVYO) in this Form 4 filing?

Edmond Landon is identified as an officer of Klaviyo, serving as Chief Legal Officer. The Form 4 records his direct ownership transaction in the company’s Series A Common Stock and provides updated post-transaction holdings, including both common shares and unvested restricted stock units.