EntrepreneurialCheck
Martin Kleppmann estimated net worth profile

Martin Kleppmann Net Worth (Estimated)

Founder at Rapportive · YC S10

est. wealth $5.2M

Quick answer

Martin Kleppmann's estimated net worth / paper wealth is $5.2M (range $3.7M–$7.9M) as of 2026.

Martin Kleppmann is Founder at Rapportive (YC S10). Independent Entrepreneurial Check model estimate from public YC data.

At a glance

NameMartin Kleppmann
RoleFounder
CompanyRapportive
YC batchS10
Est. company val$100.0M
Assumed ownership5%
Est. paper wealth / net worth$5.2M
$3.7M – $7.9M
  • Company status: Acquired
  • Education: PhD in Computer Science from the University of Cambridge
  • Region: United States of America
  • Industries: B2B, Productivity
  • Team size: 2
  • Website: http://rapportive.com

Who is Martin Kleppmann?

Martin Kleppmann is known for his work on distributed systems and data management, and has been involved with various startups including Rapportive.

Highlights:

  • University of Cambridge
  • Y Combinator
  • Rapportive

About Rapportive

Rapportive shows you everything about your contacts right inside your inbox.

You can immediately see what people look like, where they're based, and what they do. You can establish rapport by mentioning shared interests. You can grow your network by connecting on LinkedIn.

Imagine relationship management built into your email. For free.

Model inputs

  • Stage: acquired
  • Valuation tier: fallback-acquired
  • Valuation note: no_discovery_sources [scale: acquired/inactive raise amount not used as 10× input]
  • Research as-of: 2026-08-04
  • Funding input: no public raise amount found; stage fallback valuation

FAQ: Martin Kleppmann net worth and Rapportive valuation

What is Martin Kleppmann's net worth?

Martin Kleppmann's estimated net worth / paper wealth is $5.2M (range $3.7M–$7.9M) as of 2026. Entrepreneurial Check publishes an independent model-based estimate from public company and role data.

Martin Kleppmann net worth

Martin Kleppmann's estimated net worth / paper wealth is $5.2M (range $3.7M–$7.9M) as of 2026. This Martin Kleppmann net worth figure is estimated paper wealth, not a verified statement of assets.

How much is Martin Kleppmann worth?

Martin Kleppmann's estimated net worth / paper wealth is $5.2M (range $3.7M–$7.9M) as of 2026. How much Martin Kleppmann is worth here means estimated paper wealth from public company and role data — not financial advice.

How rich is Martin Kleppmann?

Martin Kleppmann's estimated net worth / paper wealth is $5.2M (range $3.7M–$7.9M) as of 2026. “How rich is Martin Kleppmann” here means estimated paper wealth from public company and role data — not verified net worth or financial advice.

Martin Kleppmann fortune

Martin Kleppmann's estimated net worth / paper wealth is $5.2M (range $3.7M–$7.9M) as of 2026. This Martin Kleppmann fortune figure is estimated paper wealth only, not a verified statement of assets.

Martin Kleppmann equity value

Martin Kleppmann's estimated net worth / paper wealth is $5.2M (range $3.7M–$7.9M) as of 2026. Martin Kleppmann equity value on this page is modeled paper wealth from estimated ownership — not a disclosed cap table or verified net worth.

What is Rapportive valuation?

Rapportive's estimated valuation on Entrepreneurial Check is $100.0M. Independent model output, not a verified appraisal or official mark.

What is Rapportive post-money valuation?

Rapportive's estimated valuation on Entrepreneurial Check is $100.0M. That figure is a modeled post-money mark when a public raise is available — not a verified appraisal or official mark.

What is Rapportive funding?

Rapportive funding, when a public raise is available, is a model input on this Entrepreneurial Check profile. How much Rapportive raised is not a complete cap table — figures are estimates only.

How much did Rapportive raise?

How much Rapportive raised, when disclosed, informs the estimated Rapportive valuation and founder paper-wealth figures on this page. Independent estimate only — not a complete cap table or financial advice.

How much money did Rapportive raise?

How much money Rapportive raised, when a public figure is available, is a model input for the estimated Rapportive valuation on this profile. Estimates only — not a complete cap table.

What is Rapportive series funding?

Rapportive series funding, when a public raise is disclosed, informs the estimated Rapportive valuation here. Not a complete financing history.

What company is Martin Kleppmann building?

Martin Kleppmann is Founder at Rapportive, a Y Combinator-backed startup (batch S10).

What does Rapportive do?

Rapportive — Add profiles to email.

What YC batch is Martin Kleppmann from?

Martin Kleppmann is associated with Y Combinator batch S10.

Where did Martin Kleppmann go to school?

Public profiles associate Martin Kleppmann with PhD in Computer Science from the University of Cambridge.

What other companies is Martin Kleppmann connected to?

Public associations for Martin Kleppmann include Rapportive, Y Combinator.

Where is Martin Kleppmann based?

Public directory data lists Martin Kleppmann's region as United States of America.

What industry is Martin Kleppmann in?

Martin Kleppmann is listed under B2B, Productivity.

How big is Rapportive?

Public data lists Rapportive's team size as 2.

What is Rapportive's status?

Rapportive is listed as Acquired in public company data.

What else is notable about Martin Kleppmann?

University of Cambridge.

Is Entrepreneurial Check affiliated with Y Combinator?

No. Entrepreneurial Check is an independent informational site and is not affiliated with, endorsed by, or sponsored by Y Combinator or the profiled companies.