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Stephan Cizmar

Stephan Cizmar

Partner atBlackhorn VenturesBrooklyn, New York
Full bioFirm profile

Stephan Cizmar is a Partner at Blackhorn Ventures, joining in 2022. He is also co-founder and CSO of Lang.ai and has held roles at Yext, IBM, and Unqork.

What Stephan can write

Writes checks ofNot reported
Comes in atSeed, Series ACan lead the round
Ownership target7-10%At first check
Pitch pageSubmit on their siteThe firm asks founders to apply here.

Career

  1. Unqork · senior role
  2. Lorimer Ventures · co-founder
  3. Lang.ai · co-founder and CSO
  4. Blackhorn Ventures · Partner
    Now
  5. IBM
  6. Unqork
  7. Yext
  8. Blackhorn Ventures · Operating Partner
    Now

Companies founded

Lang.aiLorimer Ventures

Focus

developer toolsmachine learning applicationsenergyindustry 4.0 softwareSaaS

Education

Colby College, dual degree in Economics and Science Technology and Society

Also at Blackhorn Ventures

Melissa Cheong
Melissa CheongManaging Partner
Philip O'Connor
Philip O'ConnorCo-Founder & Managing Partner
Micah Kotch
Micah KotchPartner
Amanda Rohrer
Amanda RohrerPrincipal
Cameron Carver
Cameron CarverSenior Associate
Omar SmithSenior Associate

Partners like Stephan

At firms with a similar stage, sector and check size.

Bill Carson
Bill CarsonPartner, Touchdown Ventures
Ryan Freedman
Ryan FreedmanCo-Founder, Executive Chairman, Alpaca VC
Blair Garrou
Blair GarrouManaging Partner, Mercury Fund
Josh LumerSenior Principal, Allstate Strategic Ventures
Michael PalmerGeneral Partner, Great Wave Ventures
Ginger Rothrock, Ph.D
Ginger Rothrock, Ph.DManaging Director, HG Ventures

Alert me when Blackhorn Ventures is active

One email when Stephan's firm raises a fund, adds a partner or shows new activity.

Founders and investors at a Mode VC gathering

Send Mode VC your deck

Raising a pre-seed or seed round? We write $1M to $5M first checks and help founders with distribution. A partner reads every deck.

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Questions

Who is Stephan Cizmar?

Stephan Cizmar is a Partner at Blackhorn Ventures, joining in 2022. He is also co-founder and CSO of Lang.ai and has held roles at Yext, IBM, and Unqork.

How much does Stephan Cizmar invest?

Blackhorn Ventures has not reported a check size. It invests at seed, series a.

How do I pitch Stephan Cizmar?

A warm intro from a founder Blackhorn Ventures backed works best.

What did Stephan Cizmar do before Blackhorn Ventures?

senior role at Unqork; co-founder at Lorimer Ventures; co-founder and CSO at Lang.ai; IBM; Unqork; Yext.

Last updated 2026-10-15. Is this you? Ask for a correction.