Klaviyo, Inc. SEC Filings

Klaviyo, Inc. director and Co‑Chief Executive Officer Luciano Fernandez Gomez reported a tax-related share disposition. On the reported date, 23,308 shares of Series A Common Stock were withheld by Klaviyo to cover tax obligations tied to vesting and settlement of restricted stock units, rather than sold in the open market. Following this withholding, his holdings consist of 145,874 shares of Series A Common Stock, plus 1,008,471 unvested RSUs and 1,193,238 unvested performance stock units, each representing the right to receive one share upon vesting and settlement.

Klaviyo, Inc.’s Chief Financial Officer Amanda Whalen reported a mix of share conversions, sales, and tax-related dispositions in company stock. On February 13, she converted 14,000 Series B Common shares into Series A Common and sold 9,281 Series A shares at a weighted average price of $19.01, plus 4,719 shares at a weighted average of $18.63, with actual sale prices ranging from $18.52 to $19.75 per share.

On February 15, she converted an additional 29,513 Series B shares into Series A in connection with tax withholding on vested RSUs and had 45,307 Series A shares withheld to cover tax obligations. After these transactions, she held 426,425 shares of Series A Common Stock and 301,405 shares of Series B Common Stock, along with unvested RSUs, all under pre-arranged Rule 10b5-1 trading and equity plans.

Klaviyo, Inc. director Jennifer Ceran reported an open-market purchase of Series A Common Stock. On February 12, 2026, she bought 16,339 shares of Klaviyo’s Series A Common Stock at a weighted average price of $18.38 per share, through multiple trades between $18.36 and $18.38.

After this purchase, she beneficially owned 30,691 securities, consisting of 24,871 shares of Series A Common Stock and 5,820 unvested restricted stock units granted under Klaviyo’s 2023 Stock Option and Incentive Plan, each RSU representing the right to receive one share upon vesting and settlement.

Capital International Investors has disclosed a significant stake in Klaviyo, Inc. The institutional investor reports beneficial ownership of 12,788,846 shares of Klaviyo common stock, representing 9.3% of the company’s outstanding 137,856,147 shares as of 12/31/2025.

Capital International Investors, a division of Capital Research and Management Company and its affiliated investment management entities, has sole voting and sole dispositive power over all reported shares. The securities are described as acquired and held in the ordinary course of business, not for the purpose of changing or influencing control of Klaviyo.

Klaviyo, Inc. (KVYO) received an updated ownership report showing that co-founder Andrew Bialecki beneficially owns 78,163,529 shares of Series A common stock on an as-converted basis, representing 35.1% of the class as of December 31, 2025.

This stake includes shares underlying Series B common stock held directly by Bialecki, his spouse, and several 2023 family trusts for which he or his spouse serve as trustee. He is reported to have sole voting and dispositive power over all 78,163,529 shares and no shared voting or dispositive authority.

Klaviyo, Inc. files its annual report outlining strong growth in its data-driven marketing and customer experience platform for B2C companies. Revenue rose to $1,234.0 million in 2025 from $937.5 million in 2024, a 31.6% increase, driven by more customers, higher usage, and expanded products.

The company still reported a net loss of $31.8 million for 2025, narrower than the $46.1 million loss in 2024, as scale improved profitability. Gross profit grew to $921.5 million with margins of 74.7%. Klaviyo served over 193,000 customers as of December 31, 2025 and emphasizes AI-powered marketing, service, and analytics as key growth drivers.

Klaviyo reported strong fourth-quarter and full-year 2025 results, highlighted by rapid growth and improving profitability. Q4 revenue reached $350.2 million, up 30% year over year, while full-year revenue was $1.234 billion, a 32% increase.

Q4 GAAP net income was $7.0 million after a loss a year earlier, and full-year GAAP net loss narrowed to $31.8 million. On a non-GAAP basis, 2025 operating income was $169.2 million with a 13.7% operating margin, and non-GAAP net income was $205.2 million. Free cash flow for 2025 was $200.4 million, and cash and cash equivalents were $1.065 billion as of December 31, 2025.

The customer base expanded to over 193,000 paying customers, up from over 167,000, with dollar-based net revenue retention of 110%. For 2026, Klaviyo guides revenue to $1.501–$1.509 billion, implying 21.5–22.5% growth, and expects non-GAAP operating income of $218–$224 million with margins of 14.5–15.0%.

Shopify Strategic Holdings 3 LLC, a wholly owned subsidiary of Shopify Inc. and a 10% owner of Klaviyo, Inc., reported a derivative transaction involving Klaviyo shares. The Shopify affiliate exercised warrants covering 344,383 shares of Klaviyo’s Series B Common Stock at an exercise price of $0.01 per share.

After this transaction, the Shopify affiliate beneficially owned 2,066,293 warrants to purchase Series B Common Stock and 16,628,727 shares of Series B Common Stock. Each share of Series B is convertible at any time into one share of Klaviyo’s Series A Common Stock and will automatically convert upon certain events described in Klaviyo’s certificate of incorporation.

Klaviyo Co-CEO Andrew Bialecki reported a planned stock sale under a Rule 10b5-1 trading plan. On January 27, 2026, he converted 155,219 shares of Series B Common Stock into 155,219 shares of Series A Common Stock at a conversion price of $0.

He then sold 150,689 Series A shares at a weighted average price of $25.34 and 4,530 Series A shares at a weighted average price of $24.94, leaving no Series A shares held directly afterward. He continues to hold 68,950,945 Series B shares directly, while additional Series B shares are held indirectly through several 2023 trusts and by his spouse, for which he disclaims beneficial ownership except to the extent of any pecuniary interest.