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KVYO - Klaviyo, Inc.

Insider Sale by Bialecki Andrew (Co-CEO, 10%)

1 Month
After Trade
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Trade Summary

6 days ago, Bialecki Andrew, serving as Co-CEO, 10% owner at Klaviyo, Inc. (KVYO), sold 200,000 shares at $19.37 per share, for a total transaction value of $3,873,821.00.

This sale represents a 100.00% decrease in Bialecki Andrew's stake in the company. This is considered a high-conviction trade given the significant change in ownership.

The trade was executed on Tuesday, March 17, 2026 and publicly disclosed via SEC Form 4 filing on Thursday, March 19, 2026, 2 days after the trade was made.

Klaviyo, Inc. operates in the TECHNOLOGY sector, specifically within the SOFTWARE - INFRASTRUCTURE industry. Insider selling activity in this sector can provide valuable signals about industry trends and company-specific developments.

Bialecki Andrew

Co-CEO, 10%

Andrew Bialecki is a tech entrepreneur and co-founder of Klaviyo, Inc. (NYSE: KVYO), where he served as Chief Executive Officer from September 2012 to December 2025, and currently holds the role of Co-Chief Executive Officer.[[1]](https://www.saastr.com/who-is-andrew-bialckei-ceo-of-saas-and-ecommerce-leader-klaviyo/)[[2]](https://investors.klaviyo.com/governance/board-of-directors/person-details/default.aspx?ItemId=aff4caba-2eb8-4c16-80fd-1f9c93ea514b)[[6]](https://investors.klaviyo.com/governance/board-of-directors/default.aspx) Born and raised in Massachusetts, he earned dual degrees in mechanical engineering and economics from the Massachusetts Institute of Technology (MIT).[[1]](https://www.saastr.com/who-is-andrew-bialckei-ceo-of-saas-and-ecommerce-leader-klaviyo/) His early career included roles as Lead Engineer at Applied Predictive Technologies (acquired by Mastercard), Senior Engineer at Performable (acquired by HubSpot), and Chief Technology Officer at RockTech.[[1]](https://www.saastr.com/who-is-andrew-bialckei-ceo-of-saas-and-ecommerce-leader-klaviyo/)[[2]](https://investors.klaviyo.com/governance/board-of-directors/person-details/default.aspx?ItemId=aff4caba-2eb8-4c16-80fd-1f9c93ea514b) In 2012, Bialecki co-founded Klaviyo in Boston with Ed Hallen, bootstrapping the marketing automation platform focused on e-commerce data-driven personalization, which grew to support over 143,000 brands and went public via IPO in September 2023.[[1]](https://www.saastr.com/who-is-andrew-bialckei-ceo-of-saas-and-ecommerce-leader-klaviyo/)[[3]](https://www.accel.com/podcast-episodes/klaviyo-andrew-bialecki) Under his leadership, Klaviyo expanded from email marketing to comprehensive CRM solutions, emphasizing sustainable growth, customer insights, and AI innovations, while forging key partnerships like with Shopify.[[1]](https://www.saastr.com/who-is-andrew-bialckei-ceo-of-saas-and-ecommerce-leader-klaviyo/)[[3]](https://www.accel.com/podcast-episodes/klaviyo-andrew-bialecki)[[4]](https://www.klaviyo.com/blog/author/andrew-bialecki)[[5]](https://www.youtube.com/watch?v=nTV3U1CTpJ8) As a corporate insider, he has recently engaged in 10% trading activity at Klaviyo.[user query]

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Trade Price

$19.37

Quantity

200,000

Total Value

$3,873,821.00

Shares Owned

0

Trade Date

Tuesday, March 17, 2026

6 days ago

SEC Filing Date

Thursday, March 19, 2026

Filed 2 days after trade

TECHNOLOGYSOFTWARE - INFRASTRUCTURE

About Klaviyo, Inc.

Company Overview

No company information available
View news mentioning KVYO

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