Klaviyo, Inc. filings document the operating results, governance, capital actions, and material events of a public SaaS company focused on autonomous B2C CRM. Its Form 8-K reports furnish quarterly and annual financial results, investor presentations, Regulation FD disclosures, and business updates related to the company’s customer-data platform, marketing automation, service workflows, and AI-enabled product strategy.
The company’s proxy materials cover board matters, executive compensation, equity awards, shareholder voting items, and corporate governance. Other filings disclose capital-structure matters such as Series A Common Stock repurchases, material agreements, compensatory arrangements, leadership-transition disclosures, exhibits, and Inline XBRL cover-page data.
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.
Klaviyo, Inc. insider activity: Co-Chief Executive Officer, director and 10% owner Andrew Bialecki converted 167,926 shares of Series B Common Stock into 167,926 shares of Series A Common Stock on 01/20/2026 at an exercise price of $0 per share. That same day, he sold 167,130 Series A shares at a weighted average price of $24.16 and 796 Series A shares at a weighted average price of $23.29, all pursuant to a Rule 10b5-1 trading plan adopted on May 20, 2025.
Following these transactions, Bialecki directly held 69,106,164 shares of Series B Common Stock, each convertible into one share of Series A Common Stock, and no Series A shares directly. Additional Series B holdings are reported as indirectly owned through several 2023 trusts and by his spouse, with stated disclaimers of beneficial ownership except to the extent of any pecuniary interest.
Klaviyo, Inc. reported that Co-Chief Executive Officer Luciano Fernandez Gomez received new equity awards in the form of Series A Common Stock-based units. On 01/15/2026 he was granted 1,093,801 restricted stock units (RSUs) at $0 per share, which will vest in twelve equal quarterly installments starting on February 15, 2026, as long as he remains co-CEO.
He was also granted 1,193,238 performance stock units (PSUs) at $0 per share. These PSUs can vest in up to four tranches over a five-year period if the stock price closes at or above $40.00, $55.00, $70.00, and $85.00 per share, each for at least sixty consecutive days, and if he continues in his role. After these awards, he beneficially owns 2,370,891 shares and units, including 78,032 shares of Series A Common Stock and unvested RSUs and PSUs.
Klaviyo, Inc.’s Chief Financial Officer Amanda Whalen reported a series of equity transactions in company stock. On January 15, 2026, she converted 4,045 shares of Series B Common Stock into 4,045 shares of Series A Common Stock at no cost, consistent with the Series B shares’ 1‑for‑1 convertibility and lack of expiration.
That same day, she sold 7,826 Series A shares at a weighted average price of $26.08 and 6,174 Series A shares at a weighted average price of $25.52, all under a pre‑arranged Rule 10b5‑1 trading plan adopted on August 21, 2025. Following these transactions, she beneficially owned 42,687 shares of Series A and 399,532 unvested RSUs tied to Series A, as well as 235,543 shares of Series B and 109,375 unvested RSUs tied to Series B.
Klaviyo, Inc. insider Edmond Landon, the Chief Legal Officer, reported planned sales of Series A Common Stock. On January 15, 2026, Landon sold 5,601 shares at a weighted average price of $26.08 and 4,399 shares at a weighted average price of $25.52, in open-market transactions coded as sales.
The filing states these trades were made under a Rule 10b5-1 trading plan adopted on August 21, 2025, which is designed to pre-schedule transactions. After these sales, Landon beneficially owned 343,882 shares, consisting of 90,284 shares of Series A Common Stock and 253,598 unvested restricted stock units that each represent the right to receive one share upon vesting and settlement.
Klaviyo Co-Chief Executive Officer Andrew Bialecki reported a planned share conversion and sale of common stock. On January 13, 2026, he converted 140,646 shares of Series B Common Stock into the same number of Series A Common Stock, then sold those 140,646 Series A shares in two transactions pursuant to a Rule 10b5-1 trading plan adopted on May 20, 2025. The weighted average prices were $27.62 per share for 50,319 shares and $27.29 per share for 90,327 shares, leaving him with no directly held Series A shares and 69,274,090 shares of Series B Common Stock reported as directly owned.
The filing also notes that Bialecki is a director, 10% owner, and Co-Chief Executive Officer, and that Series B shares are convertible one-for-one into Series A with no expiration date. He additionally reports indirect interests through several 2023 trusts and shares held by his spouse, while expressly disclaiming beneficial ownership of those indirect holdings except to the extent of any pecuniary interest.