0001470831-26-000720.txt : 20260717 0001470831-26-000720.hdr.sgml : 20260717 20260717200117 ACCESSION NUMBER: 0001470831-26-000720 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20260716 FILED AS OF DATE: 20260717 DATE AS OF CHANGE: 20260717 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: Whalen Amanda CENTRAL INDEX KEY: 0001991131 ORGANIZATION NAME: FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-41806 FILM NUMBER: 261184944 MAIL ADDRESS: STREET 1: KLAVIYO, INC. STREET 2: 125 SUMMER STREET, 6TH FLOOR CITY: BOSTON STATE: MA ZIP: 02110 ISSUER: COMPANY DATA: COMPANY CONFORMED NAME: Klaviyo, Inc. CENTRAL INDEX KEY: 0001835830 STANDARD INDUSTRIAL CLASSIFICATION: SERVICES-PREPACKAGED SOFTWARE [7372] ORGANIZATION NAME: 06 Technology EIN: 000000000 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 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 4 1 wk-form4_1784332874.xml FORM 4 X0609 4 2026-07-16 0 0001835830 Klaviyo, Inc. KVYO 0001991131 Whalen Amanda false C/O KLAVIYO, INC. 125 SUMMER STREET, 6TH FLOOR BOSTON MA 02110 0 1 0 0 Chief Financial Officer 1 Series A Common Stock 2026-07-16 4 S 0 14000 17.75 D 838192 D These transactions were effected by the Reporting Person pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on August 21, 2025. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $17.43 to $18.05 per share. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. Consists of (i) 59,302 shares of the Issuer's Series A Common Stock, par value $0.001 per share ("Series A Common Stock"); (ii) 551,618 unvested restricted stock units 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) 227,272 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. /s/ Landon Edmond, Attorney-in-Fact 2026-07-17