Klaviyo shareholders re-elect three Class III directors, approve say-on-pay, ratify Deloitte

Proposal One: Election of Directors The Company’s stockholders elected each of Jennifer Ceran, Chano Fernández, and Susan St. Ledger to serve as a Class III director of the Company’s board of directors, each to hold office until the Company’s annual meeting of stockholders in 2029 and until their successor is duly elected and qualified, or until their earlier death, resignation, or removal. The results of such vote were as follows: Nominee For Withhold Broker Non-Votes Jennifer Ceran 1,491,231,986 21,503,416 25,244,610 Chano Fernández 1,510,072,875 2,662,527 25,244,610 Susan St. Ledger 1,509,767,602 2,967,800 25,244,610

Proposal Two: Approval, on a Non-Binding Advisory Basis, of the Compensation of the Company’s Named Executive Officers The Company’s stockholders approved, on a non-binding advisory basis, the compensation of the Company’s named executive officers. The results of such vote were as follows: For Against Abstain Broker Non-Votes 1,494,346,600 18,300,389 88,413 25,244,610

Proposal Three: Ratification of Appointment of Independent Registered Public Accounting Firm The Company’s stockholders ratified the appointment of Deloitte & Touche LLP as the Company’s independent registered public accounting firm for the fiscal year ending December 31, 2026. The results of such vote were as follows: For Against Abstain 1,537,384,843 428,789 166,380