10-Q: Klaviyo Reports Strong Q1 2026 Growth, Revenue Up 27.9%

Klaviyo, Inc. announced its first quarter 2026 financial results, showcasing a significant 27.9% year-over-year revenue increase to $358.0 million, driven by new customer acquisition and expanded existing customer usage.

Summary

• Klaviyo reported a 27.9% increase in revenue for the first quarter of 2026, reaching $358.0 million compared to $279.8 million in the same period of 2025.
• The company achieved net income of $9.0 million for the quarter, a significant improvement from a net loss of $14.1 million in Q1 2025.
• Operating income turned positive at $1.7 million, a substantial swing from an operating loss of $23.8 million in the prior year's first quarter.
• Customers generating over $50,000 in Annual Recurring Revenue (ARR) grew by 38% year-over-year to 4,175.
• Dollar-Based Net Revenue Retention Rate (NRR) was 110% as of March 31, 2026, up from 108% in the prior year, indicating strong expansion from existing customers.
• The company repurchased $100 million of its Series A common stock as part of a new $500 million share repurchase program authorized in March 2026.

Sentiment

Score: 8

Explanation: StockSavvy.ai views this filing positively due to strong revenue growth, a significant turnaround to profitability, and improved customer metrics, despite increased operating expenses.

Positives

• Revenue growth of 27.9% year-over-year to $358.0 million.
• Positive net income of $9.0 million, a substantial improvement from a net loss in the prior year.
• Turnaround to operating income of $1.7 million from a significant operating loss.
• Strong growth in high-value customers, with those generating over $50,000 ARR increasing by 38%.
• Improving Dollar-Based Net Revenue Retention Rate (NRR) to 110%, signaling effective customer expansion.
• Successful international expansion, with 41.5% of revenue generated outside the Americas.
• Initiation of a $500 million share repurchase program, demonstrating confidence in financial health and commitment to shareholder returns.

Negatives

• Cost of revenue increased by 31.6%, outpacing revenue growth, primarily due to higher outbound communication sending costs and personnel expenses.
• Selling and marketing expenses increased by 8.5%, driven by personnel costs and partnership expenses, though it decreased as a percentage of revenue.
• Research and development costs increased by 15.4%, reflecting continued investment in platform development.
• General and administrative expenses increased by 23.4%, largely due to stock-based compensation and technology expenses.
• The company has a history of net losses, and while profitable in this quarter, future profitability is not guaranteed.
• The company continues to maintain a valuation allowance against its U.S. deferred tax assets.

Risks

• The company's historical rapid revenue growth may not be sustainable in the future.
• Failure to effectively manage rapid growth could adversely affect operations and financial condition.
• Intense competition in the highly dynamic SaaS and marketing technology industry.
• Dependence on third-party platform integrations, particularly with Shopify, and potential disruptions to these relationships.
• Potential for unfavorable economic conditions or reductions in marketing spending impacting customer demand.
• The company's reliance on its senior management team and the ability to attract and retain key personnel.
• Risks associated with collecting, processing, and securing personal data, including potential cybersecurity incidents and data breaches.
• The evolving nature of AI technology and its integration into products may expose the company to additional risks.
• Volatility in the trading price of Series A common stock and the potential for it to decline regardless of operating performance.
• The dual-class stock structure concentrates voting control, potentially limiting minority stockholder influence.
• Potential for significant future operating expenses related to innovation, international expansion, and sales and marketing efforts.
• The company's ability to adapt to technological changes, evolving industry standards, and changing customer needs.
• The risk that investments in research and development may not yield new products or enhancements.
• Potential for disruptions in the operations of third-party cloud infrastructure providers.
• Exposure to foreign currency exchange rate fluctuations as international operations expand.
• Changes in tax laws and regulations could adversely affect the business.
• The company may require additional capital in the future, which may not be available on acceptable terms.
• Potential liability from customer activities, content, or data stored on the platform.
• Compliance with stringent and evolving privacy, data security, and data protection laws globally.
• The impact of new and evolving data processing and interoperability regulations, such as the EU Data Act.

Future Outlook

The company expects continued investment in platform development, international expansion, and selling and marketing efforts. While gross margin is expected to decline modestly due to increased text and WhatsApp message usage, overall gross profit dollars are anticipated to increase. Selling and marketing expenses are expected to increase in dollar amount but decrease as a percentage of revenue over the longer term.

Management Comments

• Klaviyo enables over 196,000 businesses to efficiently drive revenue growth by making it easy to bring their first-party data together and use it to create and deliver highly personalized, omnichannel consumer experiences at scale.
• The company's evolution from a leading marketing automation platform to a comprehensive consumer engagement solution, powered by AI, combines marketing, service, analytics, and its data platform into a single solution.
• International sales outside of the Americas accounted for 36.6% of revenue for the three months ended March 31, 2026, indicating significant global growth opportunities.

Industry Context

StockSavvy.ai notes that Klaviyo's performance aligns with the broader trend of businesses prioritizing first-party data and personalized customer experiences in the digital marketing landscape. The company's expansion into AI-powered CRM and customer service solutions positions it to capitalize on the growing demand for integrated customer engagement platforms.

Legal Proceedings

• The company is not presently subject to any pending or threatened litigation, individually or taken together, for which it is reasonably possible to have a material effect on its consolidated financial position or results of operations.

Related Party Transactions

• The company incurred $8.9 million in fees under a revenue sharing agreement with Shopify during the three months ended March 31, 2026.
• As of March 31, 2026, the company had $2.9 million and $3.0 million in accrued expenses and accounts payable owed to Shopify, respectively.

Stakeholder Impact

• Shareholders may benefit from the company's strong revenue growth, improved profitability, and the initiation of a share repurchase program.
• Customers are likely to benefit from continued investment in platform innovation, AI capabilities, and expanded offerings.
• Employees may see continued investment in R&D and sales, potentially leading to growth opportunities, but also face risks related to managing rapid growth and potential workforce changes.
• Partners, such as Shopify, benefit from the ongoing collaboration and revenue sharing agreements.

Next Steps

• Continue to invest in platform development, AI and machine learning capabilities.
• Expand international operations and product offerings.
• Grow the customer base, particularly in mid-market and enterprise segments.
• Continue to cross-sell additional use cases and marketing channels to existing customers.
• Complete the final settlement of the Accelerated Share Repurchase (ASR) agreement by the second quarter of 2026.
• Monitor and adapt to evolving technological changes, industry standards, and regulatory requirements.

Key Dates

Recommendation

The company demonstrated robust revenue growth, a significant turnaround to profitability, and positive trends in key performance indicators like NRR and high-value customer growth. The initiation of a share repurchase program further signals financial strength and management confidence. While risks related to competition and operational scaling exist, the strong execution in the first quarter of 2026 suggests a positive outlook.

Keywords

Klaviyo, 10-Q, SEC Filing, Quarterly Report, E-commerce Marketing, Customer Engagement, SaaS, Email Marketing, SMS Marketing, WhatsApp Marketing, Data Platform, AI, Financial Results, Revenue Growth, Net Income, Share Repurchase