Klaviyorevenue, market cap & funding
Email Marketing SoftwareBoston, MassachusettsFounded 2012CEO Andrew Bialecki
Public companyKlaviyo is an American technology company that provides a marketing automation platform, used primarily for email marketing and SMS marketing. It is designed to help grow businesses with personalized newsletters and automated emails.
- Customers
- 146K
Klaviyo revenue
Klaviyo's annual revenue was $1.2B in December 2025 (Company Website). That is up 32% from $937.5M a year earlier.
All 4 revenue readings, with sources
| As of | Revenue | Source |
|---|---|---|
| Nov 2020 | $81.3M | – |
| Dec 2021 | $290.6M | SEC filing |
| Dec 2024 | $937.5M | Company Website |
| Dec 2025 | $1.2B | Company Website |
– source not recorded
Klaviyo market cap
Klaviyo is a public company. Its market capitalisation was $4.3B in September 2026.
Klaviyo funding rounds & investors
Klaviyo has raised $678.5M across five rounds since 2015. The latest was a $320M Series D in May 2021.
Rounds before the IPO
| Date | Round | Raised | Valuation |
|---|---|---|---|
| May 2021 | Series D | $320M | $9.2B |
| Nov 2020 | Series C | $200M | $4.2B |
| Apr 2019 | Series B | $150M | – |
| Aug 2017 | Series A | $7M | – |
| Aug 2015 | Seed | $1.5M | – |
| Total raised | $678.5M |
Klaviyo CEO, founders & employees
Andrew Bialecki founded Klaviyo in 2012 and runs it as CEO. Klaviyo had 2,875 employees (December 2024, Annual Report).
- Andrew BialeckiFounder & CEO
All 4 headcount readings, with sources
| As of | Employees | Source |
|---|---|---|
| Dec 2024 | 2,875 | Annual Report |
| May 2021 | 862 | – |
| Nov 2020 | 576 | – |
| Apr 2019 | 249 | – |
Klaviyo FAQ
What is Klaviyo's revenue?
Klaviyo's annual revenue was $1.2B in December 2025, according to the company's website.
Is Klaviyo publicly traded?
Yes. Klaviyo is a public company, with a market capitalisation of $4.3B in September 2026.
How much funding has Klaviyo raised?
Klaviyo raised $678.5M across five funding rounds. The last was a $320M Series D in May 2021.
How many employees does Klaviyo have?
Klaviyo had 2,875 employees in December 2024, according to the company's annual report.
Who is the CEO of Klaviyo?
Andrew Bialecki is the CEO of Klaviyo and founded the company in 2012.
Who founded Klaviyo?
Andrew Bialecki founded Klaviyo in 2012.
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How this page is sourced
4 from public sources. Founder figures link to the second they were said; public figures name their source; estimates are marked EST and say whose they are. Not financial advice.
Updated Oct 12, 2026Data disclaimerReport a correctionClaim this profileRun Klaviyo? Join the podcast