SHOPIFY INC. — Director's Dealing 2026

Jan 30, 2026

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Klaviyo, Inc. (KVYO)
CIK: 0001835830
Period of Report: 2026-01-29

Reporting Person: Shopify Strategic Holdings 3 LLC (N/A)
Reporting Person: SHOPIFY INC. (N/A)

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2026-01-29	Warrants to Purchase Series B Common Stock (Right to Buy)	$0.01	X	344383	Disposed	2032-07-28	Series B Common Stock (344383)	Direct
2026-01-29	Series B Common Stock	$	X	344383	Acquired		Series A Common Stock (344383)	Direct

Footnotes

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.