source:[1] Klaviyo Announces Launch of Proposed Secondary Offering of Series A Common Stock (https://finance.yahoo.com/news/klaviyo-announ ...)[2] Klaviyo Announces Pricing of Secondary Offering of 6,500,000 Shares of Series A Common Stock by Certain Selling Stockholders - Business Wire (https://vertexaisearch.cloud.google.com/groun ...)[3] Klaviyo to Hold Investor Day at K:BOS on September 25, 2025 - Business Wire (https://vertexaisearch.cloud.google.com/groun ...)