Klaviyo, Inc.
Leadership History
3 leaders · 2012 to present
Andrew Bialecki & Chano Fernández (co-CEOs) is the CEO of Klaviyo, in the role since 2012.
| Name | Role | From | To | Years in role |
|---|---|---|---|---|
| Chano Fernández | Co-Chief Executive Officer | 2026 | Present | < 1 |
| Andrew Bialecki | Co-Founder & Co-Chief Executive Officer | 2012 | Present | 14 |
| Ed Hallen | Co-Founder & Director | 2012 | Present | 14 |
If a shopper abandons a cart and gets a reminder email or text a little later, there is a good chance Klaviyo sent it. The company stores each brand's customer and event data and lets marketers build automated flows, campaigns and, increasingly, AI agents on top of it. It began with Shopify merchants and now also sells to larger brands such as Warner Music Group, the San Francisco 49ers and Claire's. The company is headquartered in Boston, Massachusetts.
Klaviyo sells software subscriptions to consumer brands. Email plans are priced mainly by the number of active profiles a brand stores; SMS and WhatsApp are sold as message credits; and add-ons such as Klaviyo CDP, Reviews, Customer Hub/service tools and AI agents raise spend per account. A free tier lets small stores start without a sales call, and pricing rises automatically as a merchant's list and send volume grow. Revenue expansion comes from three levers: customers growing, customers adding channels, and customers adopting more products. At June 30, 2026, 20% of ARR came from customers using three or more products and net revenue retention was 109%.
Co-Chief Executive Officer
2026 – Present
0 years (current)
Fernández was brought in to aggressively scale the company's global sales operations, explicitly tasked with pushing Klaviyo 'upmarket' from small Shopify stores to massive, highly lucrative enterprise clients.
As Co-CEO (joining from Workday), he provides the critical enterprise software experience required to effectively battle massive marketing titans like Salesforce and Adobe.
Co-Founder & Co-Chief Executive Officer
2012 – Present
14 years (current)
Bialecki orchestrated the absolute masterstroke of deeply, seamlessly integrating Klaviyo directly into the Shopify ecosystem, riding Shopify's explosive global growth to capture massive market share from legacy email providers.
As Co-Founder and CEO, he successfully guided the company through its massive 2023 IPO, transforming a highly niche email tool into a multi-billion dollar marketing automation behemoth.
Co-Founder & Director
2012 – Present
14 years (current)
Hallen led the early product strategy, heavily focusing on building a proprietary, high-speed database that could ingest billions of customer data points (like browsing history) in real-time without crashing.
As Co-Founder and Chief Product Officer, he ensures Klaviyo remains vastly technologically superior to basic email senders, effectively turning it into a lightweight Customer Data Platform (CDP).
These officers report to the chief executive and are not part of the CEO timeline above.
Klaviyo faces slowing growth (26% in Q2 2026 versus 30%+ in 2025), persistent GAAP operating losses driven by stock-based compensation, gross margin pressure from carrier pass-through costs on SMS and WhatsApp (gross margin was 73% in Q2 2026), dependence on the Shopify ecosystem, and crowded competition from Mailchimp (Intuit), Salesforce, HubSpot, Braze, Attentive and Omnisend. Its stock fell by roughly half over the 12 months to September 2026 as investors questioned how AI agents will reshape marketing software.
Klaviyo has co-CEOs: Andrew Bialecki, co-founder and CEO since 2012, and Chano Fernández, appointed co-CEO effective January 1, 2026.
Chano Fernández is a former co-CEO of Workday who joined Klaviyo's board in 2023. As co-CEO he leads go-to-market, operations and G&A.
Since the co-CEO structure began, Bialecki focuses on product, engineering and Klaviyo's long-term vision.
Amanda Whalen is Klaviyo's Chief Financial Officer and led finance through the 2023 IPO.
Elias Torres, co-founder and CEO of Agency, is set to become Chief Product Officer once Klaviyo's acquisition of Agency's team and technology closes.
Compare executive leadership tenures and strategic transitions
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