John Serafini simultaneously serves as founder and CEO of HawkEye 360 while working as a partner at Shield Capital, giving him an active operator's perspective on building defense-tech companies while investing in the same space. As a West Point graduate and former Army Airborne Ranger who holds dual Harvard degrees in business and public policy, he brings military leadership experience and deep government market understanding to his investments in space-based and national security technologies.
About their Fund
Shield Capital
Sectors
AI, Cybersecurity, Defense, Space, Robotics
Rounds
Seed - Series B+
Avg Check Size
Notable Investments
Shield Capital is led by former Pentagon, Defense Innovation Unit, and Fortune 500 CEOs who have personally run both large defense organizations and major public companies, giving them a rare blend of national security and Wall Street operator experience. The fund has built a National Security Advisory Board composed of some of the highest-ranking recent U.S. defense leaders—including General CQ Brown, Jr. (Ret.), former Chairman of the Joint Chiefs of Staff—and includes the former head of the Defense Innovation Unit who literally designed many of the commercial first contracting pathways that startups now rely on.
Other partners at the fund
Notable Fund
Investments
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Popular Investors
investor name
Active in
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Links
Deeptech / Hardware
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Robotics
Biotech
+
12
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Unknown
Pre-Seed - Seed
Unknown
$400K - $2M
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Energy
+
7
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Unknown
Pre-Seed - Series A
Unknown
$100K - $5M
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Defense
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7
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Unknown
Pre-Seed - Series A
Unknown
$100K - $5M
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Biotech
Health
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+
2
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Unknown
Pre-Seed - Seed
Unknown
$250K - $2M
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Climate
Deeptech / Hardware
Materials
+
4
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Unknown
Pre-Seed - Seed
Unknown
$400K - $1.5M
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Deeptech / Hardware
Robotics
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7
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Unknown
Pre-Seed - Seed
Unknown
$400K - $2M
Unknown
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Deeptech / Hardware
Robotics
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+
2
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Unknown
Pre-Seed - Seed
Unknown
~$750K
Unknown
Fintech
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Devtools
+
2
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Unknown
Pre-Seed - Series A
Unknown
$250K-$1M
Unknown
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