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Cumul.iorevenue & funding

Embedded Business Intelligence SoftwareLeuven, BelgiumFounded 2015

Cumul.io rebranded and is now Luzmo.

Cumul.io is a Belgian embedded analytics company founded in 2016 that provides a building block for web platforms seeking to offer customer-facing dashboards and analytics to their end users.

cumul.ioLinkedInUpdated Nov 2, 2026
Annual revenue
$9.8M
Oct 2024EST
Total raised
$4.8M
3 rounds
Employees
59
Oct 2024

Cumul.io revenue

Cumul.io has not published its revenue. GetLatka estimates it at about $9.8M a year (October 2024).

$0
$2.5M
$5M
$7.5M
$0
–
$2.3M
–
$5.7M
$9.8M
20152016–1920202021–2220232024
ReportedEstimateFounded 2015 at $0; every reading has its own bar
All 3 revenue readings, with sources
As ofRevenueSource
Nov 2020$2.3M–
Dec 2023$5.7MESTGetLatka estimate
Oct 2024$9.8MESTGetLatka estimate

– source not recorded

Cumul.io funding rounds & investors

Cumul.io has raised $4.8M across three rounds since 2016. The latest was a $4.2M funding round in November 2020.

DateRoundRaised
Nov 2020Funding round$4.2M
Oct 2017Funding round$602K
Apr 2016Funding round$60.2K
Total raised$4.8M

Interviews with Karel Callens

Nathan Latka has interviewed Cumul.io once, speaking with Karel Callens.

Watch: How Cumul.io Helps SaaS Platforms Deliver Customer-Facing Analytics at Scale (Interview with Founder and CEO Karel Callens)

March 2023 · Karel Callens, Founder and CEO

How Cumul.io Helps SaaS Platforms Deliver Customer-Facing Analytics at Scale (Interview with Founder and CEO Karel Callens)

  • Cumul.io is a building block that any web platform can add to offer customer-facing dashboards and analytics to end users
  • Karel Callens has spent fifteen years in business intelligence before founding Cumul.io
  • Cumul.io was founded approximately seven years before the March 2023 talk

Read the interviewWatch

Cumul.io competitors

Cumul.io competes most directly with Sisense.

CompanyRevenueFundingEmployeesCustomersFounded
Sisense$140M$269.5M5982K2004
Cumul.io$9.8M$4.8M59–2015

Cumul.io CEO, founders & employees

Thomas De Clerck founded Cumul.io in 2015 with Karel Callens and runs it as CEO. Cumul.io had 59 employees (October 2024, LinkedIn), up from 49 a year earlier.

0
20
40
26
39
40
49
59
20202021202220232024
ReportedOne figure per year; a reported figure wins over an estimate
All 5 headcount readings, with sources
As ofEmployeesSource
Oct 202459LinkedIn
Dec 202349LinkedIn
Dec 202240LinkedIn
Dec 202139LinkedIn
Nov 202026–

Cumul.io FAQ

Is Cumul.io still in business?

Yes. Cumul.io now operates as Luzmo.

What is Cumul.io's revenue?

GetLatka estimates Cumul.io's revenue at about $9.8M a year (October 2024). The company hasn't published its own figure.

How much funding has Cumul.io raised?

Cumul.io has raised $4.8M across three funding rounds. The latest was a $4.2M funding round in November 2020.

How many employees does Cumul.io have?

Cumul.io had 59 employees in October 2024, according to LinkedIn.

Who founded Cumul.io?

Karel Callens and Thomas De Clerck founded Cumul.io in 2015.

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How this page is sourced

4 from public sources · 2 estimates. 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 Nov 2, 2026Data disclaimerReport a correctionClaim this profile