United States · Funded startup

Who invested in Klaviyo

3 rounds we have observed, with the 6 investors named in them. Every figure came from a named source, and where the company reported a raise to the SEC itself, that is shown beside it.

Advertising & AdtechMartech

Valuation: $9.0B, Apr 2022

Funding summaryUpdated 26 Oct 2026

$347Mraised across 3 rounds since 2015, from 3 sources

$1.5MSeed$150MRound$195MSecondary
Latest round
Secondary, $195MAug 2025
Step-upi
1.3×
Investors
6
See who backed them

The funding story

Each circle is a round, placed by date and sized by amount. The line above is the running total.

201520172019202120232025
$1.5MSeed$150MRound$195MSecondary
First round
Seed, $1.5M
Aug 2015
Biggest round
$195M
Secondary · Aug 2025
Usual gap between rounds
6.3 years
the median of 2

The rounds

  1. Aug 2025
    Secondary$195M2 new1 returning

    Source recorded

  2. Apr 2019
    Round$150M1 new

    Reported by FinSMEs

  3. Aug 2015
    Seed$1.5M3 new

    From a historical funding record

Founders and team

From the SEC filings it signed: 4 on the team.

  • Amanda WhalenExecutive Officeri
  • Andrew BialeckiExecutive Officer, Directori
  • Edward HallenExecutive Officer, Directori
  • Landon EdmondExecutive Officeri

On the board, as filediJennifer CerenMichael MediciPing LiTony Weisman

Who was in which round

The busiest backers across the latest rounds. A filled square is a round they joined; a dark one, a round they led.

Seed2015Round2019Secondary2025Summit PartnersAccompliceSands Capital VenturesBlue OwlDavid CancelTJ Mahony

Everyone who backed them

Summit PartnersPrivate equity2rounds
AccompliceVC firm1round
Sands Capital VenturesPrivate equity1round
Blue OwlAsset manager1round
David CancelAngel1round
TJ MahonyAngel1round

Missing a round, or an investor who was in one? Tell us.

Also claim to have backed them

These 8 firms list Klaviyo as a portfolio company on their own websites, but no report of a round names them. They are the firms' own claims, kept apart from the rounds above.

Glynn Capital ManagementVC firmPer its own site
Cross CreekVC firmPer its own site
Harmony PartnersVC firmPer its own site
HighSage VenturesVC firmPer its own site
Irregular ExpressionsAngel networkPer its own site
SpearheadVC firmPer its own site
ConduitAcceleratorPer its own site
W Ventures GmbHVC firmPer its own site

Quick answers about Klaviyo

Who invested in Klaviyo?

Klaviyo's investors include Summit Partners, Accomplice, Sands Capital Ventures, Blue Owl and David Cancel, and 1 more on record.

How much has Klaviyo raised?

Klaviyo has raised $347M across 3 rounds since 2015.

When did Klaviyo last raise?

Klaviyo's most recent round was a Secondary of $195M in Aug 2025.

What was Klaviyo's biggest round?

Its most recent round, $195M in Aug 2025, is also its largest on record.

Who backed Klaviyo first?

Klaviyo's first round on record, in Aug 2015, was backed by Accomplice, David Cancel and TJ Mahony.

What stage is Klaviyo at?

Klaviyo's latest named round is a Secondary, in Aug 2025.

Where is Klaviyo based?

Klaviyo is based in the United States.

Companies like Klaviyo

In the same sector, and raised in the last eighteen months.

Kevel$75M · Oct 2026Whop$400M · Oct 2026Different$48M · Oct 2026Gradient$24M · Oct 2026OuterSignal$22M · Sept 2026Pipedrive$90M · Sept 2026

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