First In
Washington, District of Columbia · Invests in US · Website
Check size
$500K-$5M
Thesis
Security technology is a necessity independent of economic cycles. We back technical experts who have seen over the horizon as security practitioners across commercial, military, or intelligence sectors. We invest in entrepreneurs who are on a mission to secure our freedom.
Likely not a fit for
We do not invest in consumer-only security products, pure hardware plays without software differentiation, or founders without domain expertise in their vertical.
How they invest
- Lead or follow
- Usually leads
- Typical decision
- ~2 months
- Warm intro
- Not required
- Involvement
- Takes a board seat
- Fund status
- Actively deploying
- Decision process
- Partnership vote
Partners & team
4 contacts on file
Renny McPherson
Managing Partner · Primary contact
Arthur Karell
Partner
Claudius E. Watts IV
Senior Advisor
Ish Boyle
Advisor, Go-to-Market
Portfolio
Castelion designs, tests, and manufactures next-generation military systems rapidly and at massive scale to deter future wars.
Adlumin provides advanced cybersecurity solutions including Extended Detection and Response (XDR) and Managed Detection and Response (MDR) services, focusing on protecting organizations from cyber threats.
AnySignal is a pioneering company specializing in advanced RF technologies for aerospace and defense applications. Their platform offers unbreakable connectivity and unmatched signal superiority, engineered for mission-critical operations in Earth, orbit, and beyond.
RedZone builds ruggedized, connected portable medical equipment for frontline emergency response teams, transforming outdated hardware into a modern, data-driven infrastructure. Their connected medical data platform enables real-time patient monitoring and equipment readiness, targeting military, EMS, and federal incident preparedness.
Shift5 provides operational intelligence solutions for defense and transportation systems, focusing on cybersecurity, predictive maintenance, and compliance for cyber-physical systems.
360 Privacy provides digital executive protection and real-time risk mitigation for executives, organizations, board members, and high-net worth individuals by removing personal information from data broker websites and conducting daily scans on the deep and dark web.
Twosense offers a Continuous Authentication platform that eliminates the need for passwords by continuously verifying user identity through behavioral biometrics, particularly in high-stakes environments like healthcare and financial services.
Immuta transforms the way organizations share and govern data through a collaborative platform that includes services for data discovery, classification, and access governance.
Portal Space Systems develops advanced spacecraft that redefine what’s possible in space, focusing on high delta-v maneuverability and multi-orbit operations.
Pryzm is the AI command center for federal business development growth and accelerated acquisitions. Pryzm eliminates the information silos that cost federal contractors opportunities, revenue, and critical relationships. By giving every team a unified, real-time view of where money is moving, who influences decisions, and which programs are truly worth chasing, Pryzm helps organizations align faster and capture more revenue.
Tidal Cyber is a leader in Threat-Led Defense, providing tools and services that help organizations defend against real-world cyber threats by operationalizing the MITRE ATT&CK framework.
Dapple Security creates cutting-edge technology utilizing responsible biometrics that protects people and privacy through first-of-its-kind passwordless authentication.
Recent activity
- Apr 2026
Rilian Technologies
Seed · Co-Lead
- Apr 2026
SCATR
Series A · Lead
- Apr 2026
Hybron
Seed · Participated
- Mar 2026
Vanguard Defense
Seed · Lead
- Mar 2026
Smack Technologies
Series A · Participated
- Dec 2025
Pryzm
Seed · Portfolio
- Dec 2025
AnySignal
Series A · Portfolio
- Dec 2025
Shift5
Series C · Portfolio
First In in the news
CnEVPost
Chery-JLR's Freelander brand to begin pre-sales of first model on August 10
11 hours ago
Fairfield University
Fairfield Team Places 1st in CT Collegiate Business Plan Competition
16 hours ago
Cryptonews.net
A First in the US: Grayscale Applies for ETF for Controversial Altcoin!
2 days ago
Pulse 2.0
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InnovationMap
London AI startup selects Houston for first U.S. office after $20M raise
3 days ago
TechBuzz News
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8 days ago
Insider NJ
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16 days ago
Big Island Now
Hawaiʻi becomes first state in nation to fund savings accounts for eligible foster children
17 days ago
Governor Bob Ferguson (.gov)
WA Cares Fund benefits open, launching nation’s first public long-term care insurance program
23 days ago
The Office of Governor Wes Moore (.gov)
Governor Moore Announces Maryland Community Investment Venture Fund Awards and Maryland Opportunity Accounts to Expand Financial Opportunity in Maryland Communities
2 months ago
University of Pittsburgh
Pitt-Founded Startup Achieves First-in-Human Implant of Nerve Pain Device
2 months ago
Venture Capital Journal
First In raised nearly 7x more for Fund III with help from Uncle Sam
4 months ago
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Research briefRead more
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