Klaviyo (NYSE: KVYO) legal chief sells 9,623 shares in plan

Rhea-AI Filing Summary

Klaviyo, Inc. Chief Legal Officer Edmond Landon reported an open-market sale of 9,623 shares of Series A Common Stock at $20.00 per share. The transaction was executed pursuant to a Rule 10b5-1 trading plan adopted on August 21, 2025.

After this sale, Landon holds equity interests totaling 584,124 units, consisting of 74,332 shares of Series A Common Stock, 379,922 unvested restricted stock units, and 129,870 unvested performance stock units, each unit representing the contingent right to receive one share upon vesting and settlement.

Insider Trade Summary 10b5-1

Net Seller: 9,623 shares ($192,460)

Net Sell 1 txn

Insider Edmond Landon

Role Chief Legal Officer

Sold 9,623 shs ($192K)

Type	Security	Shares	Price	Value
Sale	Series A Common Stock	9,623	$20.00	$192K

Holdings After Transaction: Series A Common Stock — 584,124 shares (Direct, null)

Footnotes (1)

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. Consists of (i) 74,332 shares of the Issuer's Series A Common Stock, par value $0.001 per share ("Series A Common Stock"), (ii) 379,922 unvested restricted stock units awarded under the Issuer's 2023 Stock Option and Incentive Plan (the "Plan"), each representing the contingent right to receive one share of Series A Common Stock upon vesting and settlement, and (iii) 129,870 unvested performance stock units awarded under the Plan, each representing the contingent right to receive one share of Series A Common Stock upon vesting and settlement.

Key Figures

Shares sold: 9,623 shares Sale price: $20.00 per share Equity interests after transaction: 584,124 units +3 more

6 metrics

Shares sold 9,623 shares Series A Common Stock open-market sale on April 20, 2026

Sale price $20.00 per share Price for 9,623 Series A Common Stock shares sold

Equity interests after transaction 584,124 units Total equity interests following the reported sale

Direct shares held 74,332 shares Series A Common Stock held after the sale

Unvested RSUs 379,922 units Restricted stock units under the 2023 Stock Option and Incentive Plan

Unvested PSUs 129,870 units Performance stock units under the 2023 Stock Option and Incentive Plan

Key Terms

Rule 10b5-1 trading plan, restricted stock units, performance stock units, Series A Common Stock

4 terms

Rule 10b5-1 trading plan regulatory

"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."

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

"379,922 unvested restricted stock units awarded under the Issuer's 2023 Stock Option and Incentive Plan"

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.

performance stock units financial

"129,870 unvested performance stock units awarded under the Plan, each representing the contingent right to receive one share"

Performance stock units are a type of company award that grants employees shares of stock only if certain performance goals are met. They motivate employees to work toward specific company achievements, aligning their interests with those of shareholders. For investors, they can influence a company's future stock supply and reflect management’s confidence in reaching key targets.

Series A Common Stock financial

"74,332 shares of the Issuer's Series A Common Stock, par value $0.001 per share"

Series A common stock is a specific class of a company’s ordinary shares issued during an early formal funding round, carrying the ownership rights and voting power tied to that class. For investors it signals an early-stage equity claim with potential upside if the business grows, but also greater risk and typically less liquidity than shares in mature, publicly traded firms—imagine buying a seat on a startup’s team before the company has proven itself.

Form 4 Insider Transactions: What Each Field Means →

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 MASSACHUSETTS 02110

(City) (State) (Zip)

UNITED STATES

(Country)

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
04/20/2026

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

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

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

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	04/20/2026		S(1)		9,623	D	$20	584,124(2)	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. Consists of (i) 74,332 shares of the Issuer's Series A Common Stock, par value $0.001 per share ("Series A Common Stock"), (ii) 379,922 unvested restricted stock units awarded under the Issuer's 2023 Stock Option and Incentive Plan (the "Plan"), each representing the contingent right to receive one share of Series A Common Stock upon vesting and settlement, and (iii) 129,870 unvested performance stock units awarded under the Plan, each representing the contingent right to receive one share of Series A Common Stock upon vesting and settlement.

Remarks:

	/s/ Landon Edmond	04/22/2026
	** 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.
* Form 4: SEC 1474 (03-26)

FAQ

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

Edmond Landon, Klaviyo’s Chief Legal Officer, reported selling 9,623 shares of Series A Common Stock at $20.00 per share in an open-market transaction. The sale was disclosed on a Form 4 insider trading report.

Was Edmond Landon’s Klaviyo (KVYO) stock sale under a Rule 10b5-1 plan?

Yes. The Form 4 notes the sale was effected under a Rule 10b5-1 trading plan adopted by Edmond Landon on August 21, 2025. Such plans pre-schedule trades, making the timing more routine and less discretionary.

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

Following the reported sale, Edmond Landon holds 584,124 equity interests. These include 74,332 shares of Series A Common Stock, 379,922 unvested restricted stock units, and 129,870 unvested performance stock units tied to future vesting.

What type of security did Edmond Landon sell in Klaviyo (KVYO)?

He sold shares of Klaviyo’s Series A Common Stock at $20.00 per share. This is a non-derivative security, meaning it represents direct share ownership rather than options or other derivative instruments.

How significant is Edmond Landon’s Klaviyo (KVYO) stock sale relative to his holdings?

The reported transaction involved 9,623 shares sold, while his remaining equity interests total 584,124 units. This indicates he retains a substantial position in Klaviyo through both direct shares and unvested equity awards.