Andrew Bialecki - 30 Jun 2025 SCHEDULE 13G/A Report for Klaviyo, Inc. (the "Issuer") Series A common stock, par value $0.001 per share (the "Series A Common Stock") (KVYO)

Filing Manager: Andrew Bialecki
Reporting Manager: Bialecki Andrew
Security: Klaviyo, Inc. (the "Issuer") Series A common stock, par value $0.001 per share (the "Series A Common Stock")
Symbol: KVYO
Shares outstanding: 204,653,464 shares
Disclosed Ownership: 87,796,336 shares
Ownership: 43%
Form type: SCHEDULE 13G/A
Filing time: 05 Aug 2025, 16:24:50 UTC
Date of event: 30 Jun 2025
Next filing: 05 Nov 2025
SEC: View on sec.gov

Reporting Managers (1)

Name	Ownership	Shares Owned	sole voting power	shared voting power	Signature	Title	CIK
Bialecki Andrew	43%	87,796,336	87,796,336	0	/s/ Andrew Bialecki	Andrew Bialecki