Gomez Luciano Fernandez - 15 Feb 2026 Form 4 Insider Report for Klaviyo, Inc. (KVYO)

Role: Co-Chief Executive Officer, Director
Signature: /s/ Landon Edmond, Attorney-in-Fact
Issuer symbol: KVYO
Transactions as of: 15 Feb 2026
Net transactions value: -$433,529
Form type: 4
Filing time: 18 Feb 2026, 16:13:52 UTC
Previous filing: 16 Jan 2026
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Fernandez Gomez Luciano	Co-Chief Executive Officer, Director	C/O KLAVIYO, INC. 125 SUMMER STREET, 6TH FLOOR, BOSTON	/s/ Landon Edmond, Attorney-in-Fact	18 Feb 2026	0001730978

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	KVYO	Series A Common Stock	Tax liability	$433,529	-23,308	-0.98%	$18.60	2,347,583	15 Feb 2026	Direct	F1, F2

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Represents shares of the Issuer's Series A Common Stock, par value $0.001 per share ("Series A Common Stock"), withheld by the Issuer to satisfy tax withholding obligations in connection with the vesting and settlement of restricted stock units ("RSUs").
F2	Consists of (i) 145,874 shares of Series A Common Stock; (ii) 1,008,471 unvested RSUs 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) 1,193,238 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.

Content

Represents shares of the Issuer's Series A Common Stock, par value $0.001 per share ("Series A Common Stock"), withheld by the Issuer to satisfy tax withholding obligations in connection with the vesting and settlement of restricted stock units ("RSUs").

Consists of (i) 145,874 shares of Series A Common Stock; (ii) 1,008,471 unvested RSUs 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) 1,193,238 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.