What does Justin Zeefe invest in?

Justin Zeefe at Green Flag Ventures (Greater Los Angeles Area, California, United States) — sector focus: Defense.

How do I contact Justin Zeefe?

Justin Zeefe's published profile links (website, LinkedIn or X where available) are listed on the StartupFundraising.com investor profile.

Where is Justin Zeefe based?

Justin Zeefe is based in Greater Los Angeles Area, California, United States.

Justin Zeefe, Green Flag Ventures

About Justin Zeefe

Justin Zeefe is the Founding Partner of Green Flag Ventures, a Los Angeles-based venture capital firm he co-founded in March 2023, drawing on a prior decade of U.S. Government service in countering state-sanctioned digital adversaries and as co-founder of the managed intelligence firm Nisos. His investment thesis targets early-stage Ukrainian startups developing artificial intelligence, cybersecurity, and dual-use technologies with applications in both civilian and defense sectors. The firm typically invests check sizes ranging from $100,000 to approximately $1.2 million, focusing on bridging Ukrainian battlefield-proven tech to NATO and Fortune 500 markets. Notable portfolio companies include Kara Dag, Himera, Swarmer, and AstraNav. Zeefe also founded the Ukraine Defense Investors Network and serves as an advisor to NATO DIANA, guiding founders in defense and emerging technologies. He frequently speaks on cybersecurity and frontier-market investments, emphasizing the need for real-world traction and operational validation in high-stakes environments.

Justin Zeefe at a glance

Role: Founding Partner
Organization: Green Flag Ventures
Location: Greater Los Angeles Area, California, United States
Investor type: Individual/Angel
Focus areas: Defense

Frequently asked about Justin Zeefe

What does Justin Zeefe invest in?: Justin Zeefe at Green Flag Ventures (Greater Los Angeles Area, California, United States) — sector focus: Defense.
How do I contact Justin Zeefe?: Justin Zeefe's published profile links (website, LinkedIn or X where available) are listed on the StartupFundraising.com investor profile.
Where is Justin Zeefe based?: Justin Zeefe is based in Greater Los Angeles Area, California, United States.

StartupFundraising tracks this investor record from SEC filings and announced rounds, updating focus, location and portfolio history as new data lands. Use it to gauge fit before an outreach, then widen the search to investors in Greater Los Angeles Area.

Justin Zeefe, Green Flag Ventures

About Justin Zeefe

Justin Zeefe at a glance

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