Shopify Strategic Holdings 3 LLC - 28 Jul 2025 Form 4 Insider Report for Klaviyo, Inc. (KVYO)

Role: 10%+ Owner
Signature: SHOPIFY STRATEGIC HOLDINGS 3 LLC, By: /s/ Jason Kilpela, Director
Issuer symbol: KVYO
Transactions as of: 28 Jul 2025
Net transactions value: +$3,444
Form type: 4
Filing time: 29 Jul 2025, 16:53:02 UTC
Previous filing: 29 Apr 2025
Next filing: 14 Nov 2025
SEC: View on sec.gov

Reporting Owners (2)

Name	Relationship	Address	Signature	Signature date	CIK
Shopify Strategic Holdings 3 LLC	10%+ Owner	103 FOULK ROAD, SUITE 218-A, WILMINGTON	SHOPIFY STRATEGIC HOLDINGS 3 LLC, By: /s/ Jason Kilpela, Director	29 Jul 2025	0001993562
SHOPIFY INC.	10%+ Owner	151 O'CONNOR STREET, GROUND FLOOR, OTTAWA, ONTARIO, CANADA	SHOPIFY INC, By: /s/ Michael L. Johnson, Corporate Secretary	29 Jul 2025	0001594805

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	KVYO	Warrants to Purchase Series B Common Stock (Right to Buy)	Exercise of in-the-money or at-the-money derivative security	$0	-344,383	-11%	$0.000000	2,755,057	28 Jul 2025	Series B Common Stock	344,383	$0.0100	Direct	F1, F2
transaction	KVYO	Series B Common Stock	Exercise of in-the-money or at-the-money derivative security	$3,444	+344,383	+2.2%	$0.0100	15,939,963	28 Jul 2025	Series A Common Stock	344,383		Direct	F2, F3

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

Explanation of Responses:

Id	Content
F1	25% of the shares subject to the warrants vested on July 28, 2022, and the remaining shares vest quarterly in equal amounts through July 28, 2027. Notwithstanding the foregoing, in connection with the Issuer's initial public offering ("IPO"), 25% of the total number of shares subject to the warrants vested immediately prior to the completion of the IPO.
F2	Reflects securities held directly by Shopify Strategic Holdings 3 LLC, a wholly-owned subsidiary of Shopify Inc. ("Shopify"). Shopify is an indirect beneficial owner and disclaims beneficial ownership except to the extent of its pecuniary interest therein.
F3	Each share of Series B Common Stock is convertible at any time at the option of the holder into one share of Series A Common Stock of the Issuer, and will automatically convert into Series A Common Stock upon the occurrence of certain events as set forth in the Issuer's certificate of incorporation. The Series B Common Stock has no expiration date.