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John Serafini

Investor

Venture Partner at Shield Capital · Executive Officer, Director at HawkEye 360

Boston, Massachusetts

Writes $100K – $5M checks · typically $1.5M

Find your path to John

698 people in our graph can introduce you to John.

Each arrow is one introduction. Sign up to fill in the first one.

Ask George Barnes to introduce you to John

You →George · together at HawkEye 360 (2026) →John

Ask Jamie Chen to introduce you to John

You →Jamie · 6 people · together at HawkEye 360 →John

Ask Sam Okafor to introduce you to John

You →Sam · 5 people · together at Shield Capital →John

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About

John Serafini, founder and CEO of HawkEye 360 and a partner, brings operator perspective to defense-tech and space investing, with West Point, Army Ranger background and dual Harvard degrees.

Contact· self-published, not guessed

Invests in

AI & Machine LearningCybersecurityDefense TechQuantum ComputingRoboticsSpace Tech

Executive Officer, Director at HawkEye 360

Intro paths

→

In turn, John can intro founders to HawkEye 360's investors below.

HawkEye 360's investors · 23

Alumni VenturesManchester · $100K – $10M checksBlackRockNew YorkCenter15 CapitalLos AngelesEdgeReston · since 2026GICSingaporeGula Tech AdventuresFulton · $100K – $5M checksHemisphere Ventures LLCMckinneyIceNineInsight PartnersNew York · $120M – $350M checksLockheed Martin VenturesBethesda · since 2023Manhattan Venture PartnersNew YorkNew North VenturesPortsmouth · $1M checks · since 2021NightDragonSan Francisco · since 2026Paladin Capital GroupWashington · $100K – $5M checksRazor's Edge VenturesReston · $2M – $4M checks · since 2025Saints CapitalSan FranciscoSalica InvestmentsLondonSeraphim SpaceLondon · $1.3M – $3.8M checksShield CapitalSan Francisco · since 2021Sixty Degree CapitalNorth York · since 2026Trajectory VenturesNew York · since 2025U.S. Air Forcesince 2023Winklevoss CapitalNew York · $100K – $5M checks

Co-founders at HawkEye 360

CB
Christopher Bradley DeMayExecutive Officer

Experience

  1. HawkEye 360Founder & CEOcurrent2015 — presentWashington D.C. Metro Area
  2. Shield CapitalVenture Partnercurrent2021 — presentBoston, Massachusetts, United States
  3. BridgeSat, Inc.Board Member2015 — 2018San Francisco Bay Area
  4. Allied Minds Federal InnovationsBoard Advisor2011 — 2018Greater Boston Area
  5. Percipient NetworksCEO & Board Member2014 — 2017Boston, MA
  6. Whitewood Encryption Systems, Inc.General Manager & Board Member2014 — 2016Greater Boston Area
  7. Foreland TechnologiesGeneral Manager & Board Member2013 — 2016Greater Boston Area
  8. Federated WirelessBoard Member2012 — 2016
  9. Optio LabsBoard Member2012 — 2016Baltimore, Maryland Area
  10. Allied MindsSenior Vice President2011 — 2016Boston, Massachusetts

Skills & more

Enterprise Software22SaaS5Strategic Planning55Management42Strategy27Leadership30Venture Capital99Start-ups99Private Equity59Government32Mergers & Acquisitions89Corporate Development17
+12 moreEquitiesInvestmentsMergersSecurityMobile DevicesBusiness PlanningDefenseStrategic PartnershipsProduct ManagementResearchDue DiligenceProgram Management

From John's professional profile.

Investments

Per curated public sources.

Colleagues at Shield Capital

Akhil Iyer
Principal at Shield Capital
Caroline Aertker
Investor Relations Analyst at Shield Capital
Dan Holland
COO at Shield Capital
Dan Razin Caine
Venture Partner at Shield Capital
David DeRuff
Chief Financial Officer (fractional, part-time) at Shield Capital
David Goldfein
National Security Advisory Board at Shield Capital
David Rothzeid
Principal at Shield Capital
Denis Bovin
Senior Advisor at Shield Capital

Network2

Akhil Iyer
Principal at Shield Capital
David Rothzeid
Principal at Shield Capital

Investors connected to John in public investor directories — a warm-intro map.

Frequently asked questions

Who is John Serafini?
John Serafini, founder and CEO of HawkEye 360 and a partner, brings operator perspective to defense-tech and space investing, with West Point, Army Ranger background and dual Harvard degrees.
Where does John Serafini work?
John Serafini is Venture Partner at Shield Capital.
What does John Serafini invest in?
John Serafini invests in AI & Machine Learning, Cybersecurity, Defense Tech, Quantum Computing, Robotics, Space Tech.
What check size does John Serafini write?
John Serafini typically writes checks of $100K – $5M.
What companies has John Serafini invested in?
Investments tracked here include Bridgecomm, HawkEye 360, Star Catcher.
Where did John Serafini go to school?
John Serafini studied at Harvard Business School (MBA, Venture Capital & Private Equity); Harvard Kennedy School (MPA, International Security Policy & Political Economy); United States Military Academy at West Point (BS, English & Systems Engineering).

Founder mafias

Same school

Shared employers