The round was led by new investor Sands Capital. Other new investors include Counterpoint Global (Morgan Stanley), Whale Rock Capital Management, ClearBridge Investments, Lone Pine Capital, Owl Rock Capital, Glynn Capital, and Keith Block (former co-CEO of Salesforce), with participation from existing investors Accel and Summit Partners. Following the company's $200 million Series C financing in November 2020, this new financing valued the company at $9.15 billion on a pre-money basis and brings Klaviyo's total funding to date to over $675 million.

Klaviyo is a world-leading marketing automation platform dedicated to accelerating revenue and customer connection for online businesses. Klaviyo makes it easy to store, access, analyze and use transactional and behavioral data to power highly-targeted customer and prospect communications. The company's hybrid customer-data and marketing-platform model allows companies to grow by fostering direct relationships with customers, without giving up their valuable data to popular big-tech ad platforms. Over 265,000 innovative companies like Unilever, Custom Ink, Living Proof and Huckberry sell more with Klaviyo. Learn more at www.klaviyo.com.