0001959173-24-003790.txt : 20240522 0001959173-24-003790.hdr.sgml : 20240522 20240522105528 ACCESSION NUMBER: 0001959173-24-003790 CONFORMED SUBMISSION TYPE: 144 PUBLIC DOCUMENT COUNT: 1 FILED AS OF DATE: 20240522 DATE AS OF CHANGE: 20240522 SUBJECT COMPANY: COMPANY DATA: COMPANY CONFORMED NAME: Klaviyo, Inc. CENTRAL INDEX KEY: 0001835830 STANDARD INDUSTRIAL CLASSIFICATION: SERVICES-PREPACKAGED SOFTWARE [7372] ORGANIZATION NAME: 06 Technology IRS NUMBER: 000000000 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: 144 SEC ACT: 1933 Act SEC FILE NUMBER: 001-41806 FILM NUMBER: 24972094 BUSINESS ADDRESS: STREET 1: 125 SUMMER STREET, FLOOR 6 CITY: BOSTON STATE: MA ZIP: 02110 BUSINESS PHONE: 800-338-1744 MAIL ADDRESS: STREET 1: 125 SUMMER STREET, FLOOR 6 CITY: BOSTON STATE: MA ZIP: 02110 REPORTING-OWNER: COMPANY DATA: COMPANY CONFORMED NAME: Ceran Jennifer CENTRAL INDEX KEY: 0001652155 ORGANIZATION NAME: FILING VALUES: FORM TYPE: 144 MAIL ADDRESS: STREET 1: C/O QUOTIENT TECHNOLOGY INC. STREET 2: 400 LOGUE AVE CITY: MOUNTAIN VIEW STATE: CA ZIP: 94043 144 1 primary_doc.xml 144 0001652155 XXXXXXXX LIVE 0001835830 Klaviyo, Inc. 001-41806 125 SUMMER STREET, FLOOR 6 BOSTON MA 02110 800-338-1744 Ceran Jennifer Director Series A Fidelity Brokerage Services LLC

900 Salem Street Smithfield RI 02917

13000 320450.00 70349399 05/22/2024 NYSE Series A 05/21/2024 Restricted Stock Vesting Issuer N 13000 05/21/2024 Compensation Y 05/22/2024 12/14/2023 /s/ Jennifer Ruchti, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Jennifer E. Ceran