Fundraising Fox

Adam Niewinski

Investor

Co-Founder and General Partner at OTB Ventures · Board director at Hydrosat

Poland

Writes $100K – $10M checks

About

Adam Niewinski leverages his founder experience—co‑founding one of Poland's first fintechs and taking it public on the Warsaw Stock Exchange—to help CEE space, AI, and cybersecurity founders expand internationally.

Contact· self-published, not guessed

Invests in

AI & Machine LearningCybersecurityDeep TechFintechHardwareSpace Tech

Board director at Hydrosat

Intro paths

→

In turn, Adam can intro founders to Hydrosat's investors below.

Hydrosat's investors · 11

Blue Bear Capital PartnersJacksonCultivation CapitalSt. Louis · $100K – $3.5M checksExpon CapitalLuxembourg · $550K – $1.6M checksFREEFLOWBerkeleyHemisphere Ventures LLCMckinneyIndustrious VenturesDenverNational Oceanic and Atmospheric Administration (NOAA)since 2023OTB VenturesAmsterdam · $1.1M – $7.7M checks · since 2025SpaceFundHoustonTechstarsBoulder · $220K checksU.S. Air Forcesince 2019

Co-founders at Hydrosat

PFPieter Fossel
Pieter FosselCEO

Experience

  1. OTB VenturesCo-Founder & Managing Partnercurrent2017 — present
  2. ICEYEBoard Membercurrent2019 — present
  3. Silent EightBoard Membercurrent2020 — present
  4. HydrosatBoard Membercurrent2021 — present
  5. University Technology Transfer Centre of the University of Warsaw (UOTT UW)Member of the Board of Advisorscurrent2022 — present
  6. FintechOSBoard Membercurrent2019 — present
  7. KYP.aiBoard Membercurrent2023 — present
  8. TonikBoard Membercurrent2024 — present
  9. CI GamesBoard Membercurrent2021 — present
  10. Desa UnicumMember Of The Supervisory Board2018 — 2025
  11. OrganOxAngel Investor2009 — 2025
  12. Cosmose, Inc.Board Member2018 — 2022
  13. UniCreditDeputy Chief Executive Officer @ Bank PEKAO SA2015 — 2017Bank PEKAO SA
  14. UniCreditMember of the Supervisory Board of Pekao Investment Banking2015 — 2017
  15. XelionChairman of Supervisory Board2015 — 2017Warsaw, Mazowieckie, Poland
  16. XelionCEO2004 — 2015
  17. Platinum Bank Украинаco-Founder and Member of Supervisory Board2005 — 2007Kiev
  18. Amundi PioneerDeputy Chairman of Supervisory Board2005 — 2006
  19. CDM Pekao SA (Centralny Dom Maklerski PEKAO SA)Deputy CEO2002 — 2004
  20. Expander Financial AdvisersFounder & CEO2000 — 2002
  21. The Boston Consulting GroupConsultant1997 — 2000

Skills & more

Investments98Private Equity65Business Strategy62Banking37Mutual Funds33Mergers13

From Adam's professional profile.

Deals · 1

HydrosatBoard seat

via OTB Ventures · filed Aug 2025 · $50M raise

Attribution from SEC filings, press coverage, and firm rosters.

Other disclosed investments

Board seats

FintechosIceye SAR satelliteKYP.aiSilent Eight

Sources: the firm's website · SEC Form D filings.

Colleagues at OTB Ventures

Alicja Glinka
Investment Manager at OTB Ventures
Anna Mleko
Investment Manager at OTB Ventures
Anna Ślotła
Head of Investor Relations at OTB Ventures
Ashley Cowher
Senior Executive Assistant at Northpond Ventures
Gregory Jankilevitsch
Co-Founder at OTB Ventures
Ignacy Drzewiecki
Investment Analyst at OTB Ventures
Jeremy Teboul
Partner at OTB Ventures
Johanna Guacide
Funds Accounting Manager at Sofinnova Partners

Frequently asked questions

Who is Adam Niewinski?
Adam Niewinski leverages his founder experience—co‑founding one of Poland's first fintechs and taking it public on the Warsaw Stock Exchange—to help CEE space, AI, and cybersecurity founders expand internationally.
Where does Adam Niewinski work?
Adam Niewinski is Co-Founder and General Partner at OTB Ventures and Board director at Hydrosat.
What does Adam Niewinski invest in?
Adam Niewinski invests in AI & Machine Learning, Cybersecurity, Deep Tech, Fintech, Hardware, Space Tech.
What check size does Adam Niewinski write?
Adam Niewinski typically writes checks of $100K – $10M.
What boards does Adam Niewinski sit on?
Adam Niewinski holds tracked board seats at Fintechos, Hydrosat, Hydrosat, Iceye SAR satellite, KYP.ai, Silent Eight.
Where did Adam Niewinski go to school?
Adam Niewinski studied at Stanford University Graduate School of Business (Alumni, Stanford Executive Program); Harvard Business School (Executive Education, Venture Capital and Private Equity); Singularity.

Same school

Also attended Stanford University Graduate School of Business1,384

Roelof BothaAdvisor & former Steward at Sequoia Capital; SpaceX board memberPeter FentonGeneral Partner at BenchmarkSteve JurvetsonCo-founder of Future VenturesDavid SzeAdvisory Partner at GreylockKatherine BoyleGeneral Partner at Andreessen Horowitz (American Dynamism)Hunter WalkCo-founder & Partner at Homebrew

+ 1,378 more

Also attended Harvard Business School2,000

Brad GerstnerFounder & CEO of Altimeter CapitalAileen LeeFounder & Managing Partner of Cowboy VenturesTim DraperFounder of Draper AssociatesMamoon HamidPartner at Kleiner PerkinsNeeraj AgrawalGeneral Partner at Battery VenturesHristo BorisovCo-founder & CEO of Payhawk

+ 1,994 more

Also attended SGH Warsaw School of Economics109

Pablo GoceAnalyst at Inveready Technology Investment GroupKonradInvestment Team at Hummingbird VenturesBenedict TanAssociate Director, Investment at Vertex Ventures Sea Management Pte. Ltd.Maciej SkarulGeneral Partner at Ff Venture CapitalMagda PoslusznyPrincipal at Partech VenturesTomasz KościelniakAssociate at SMOK Ventures

+ 103 more

Also attended ACS Athens (American Community Schools)1

Fernando GouveiaManaging Partner at Compa Capital

Shared employers

Also worked at University Technology Transfer Centre of the University of Warsaw (UOTT UW)1

Przemek KowalczykFounder at Ramp Network

Also worked at FintechOS8

Dan LupuInvestor at Earlybird Venture CapitalVinoth JayakumarPartner at Molten VenturesAbhijit BanerjeePartner at Decacorn CapitalRoland MangerPartner at Bek VenturesRoland DennertManaging Partner at Cipio PartnersThomas LenzPrincipal at Cipio Partners

+ 2 more

Also worked at OrganOx10

Pierre SochaPartner at Amadeus Capital PartnersMatthew FrohnManaging Partner and Co-Founder at Longwall Venture Partners LLPMurielle Thinard McLaneManaging Partner and President at Intuitive VenturesSamuel LevyCo-founding Partner at Lauxera Capital PartnersPauline RitterPrincipal at Lauxera Capital PartnersOern R. StugeVenture Advisor, MD, MBA at Intuitive Ventures

+ 4 more

Also worked at The Boston Consulting Group907

David SzeAdvisory Partner at GreylockDave MunichielloInvestor at GV (Google Ventures)Massimo PrelzInvestor at DN CapitalRasmus AreskougInvestor at DN CapitalRiccardo MontiOperating Advisor at P101 VenturesAntonio TurroniOperating Advisor at P101 Ventures

+ 901 more