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First In

Washington, District of Columbia · Invests in US · Website

Check size

$500K-$5M

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Pre-SeedSeedSeries AAI & Machine LearningDeveloper ToolsCybersecuritySpace & DefenseRoboticsSecurity & CybersecurityAerospace & DefenseDeveloper Tools & InfrastructureRobotics & Automation

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

RM

Renny McPherson

Managing Partner · Primary contact

AK

Arthur Karell

Partner

CE

Claudius E. Watts IV

Senior Advisor

IB

Ish Boyle

Advisor, Go-to-Market

Portfolio

CastelionAerospace Defense

Castelion designs, tests, and manufactures next-generation military systems rapidly and at massive scale to deter future wars.

AdluminSecurity Cyber

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.

AnySignalEnterprise Software

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.

AndurilAerospace Defense

RedZone builds ruggedized, connected portable medical equipment for frontline emergency response teams, transforming outdated hardware into a modern, data-driven infrastructure.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.

Shift5Security Cyber

Shift5 provides operational intelligence solutions for defense and transportation systems, focusing on cybersecurity, predictive maintenance, and compliance for cyber-physical systems.

360 PrivacySecurity Cyber

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.aiSecurity Cyber

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.

ImmutaEnterprise Software

Immuta transforms the way organizations share and govern data through a collaborative platform that includes services for data discovery, classification, and access governance.

Portal SystemsAerospace Defense

Portal Space Systems develops advanced spacecraft that redefine what’s possible in space, focusing on high delta-v maneuverability and multi-orbit operations.

PryzmEnterprise Software

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 CyberSecurity Cyber

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 SecuritySecurity Cyber

Dapple Security creates cutting-edge technology utilizing responsible biometrics that protects people and privacy through first-of-its-kind passwordless authentication.

Recent activity

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Research briefRead more
First In Ventures - Research Document Overview First In Ventures is a seed-stage venture capital firm headquartered in Washington, D.C., focused exclusively on security technology companies, defense innovation, and dual-use technologies. Founded with a mission to empower entrepreneurs who secure America's freedom, the firm was purpose-built by former Marine Corps intelligence officers, CIA operatives, and national security practitioners. Investment Thesis First In believes that security technology is a necessity independent of economic cycles and invests in technical experts who have seen over the horizon as security practitioners across commercial, military, or intelligence sectors. The firm's thesis emphasizes: (1) Mission-Driven Founders - First In partners with teams on a mission, seeking founders with shared values of integrity, hard work, and execution focus. (2) Security as Essential - Security technology companies solve critical challenges for commercial and government enterprise customers. (3) Data as Competitive Advantage - The firm seeks companies leveraging data as a competitive advantage and bending the cost curve. (4) Military/Intelligence Domain Expertise - First In has significant experience investing in founders who are military or intelligence community veterans. (5) Early Product Validation - The firm invests in companies with working products or near-term product readiness. Sector and Technology Focus First In invests across three interconnected security domains: (1) Cybersecurity including zero trust architecture, threat detection, supply chain security, and data access control. (2) Defense Technology including hypersonic weapons, autonomous systems, directed energy weapons, and operational technology (OT) security. (3) Data and Intelligence including data governance, privacy, policy intelligence, and threat intelligence. Notable portfolio company categories include: Cybersecurity Infrastructure (Adlumin acquired by N-able, Tidal Cyber, Phylum, Caveonix), Defense and Aerospace (Castelion hypersonic missiles, Anduril autonomous systems, Shift5 OT security, AnySignal radio systems), Data and Privacy (Immuta data access control, Precog data integration, 360 Privacy), Testing and Software Security (Antithesis deterministic testing, Dapple Security), and Supply Chain and Infrastructure (ZeroTier, Portal Systems space technology, Rilian Technologies). Investment Strategy Primary focus is Seed stage investments with secondary focus on Pre-seed for exceptional teams and Series A follow-ons. Typical entry is companies with working products or imminent product launch. Check sizes range from 500K to 5M for seed rounds, with pre-seed at 500K to 2M, and selective Series A participation. First In leads seed rounds in their core focus areas, having demonstrated this through numerous portfolio companies where they are noted as lead investors including Castelion, Shift5, AnySignal, and Pryzm. Recent Activity and Fund Status Recent 2025 investments include: December 2025 - Portfolio company Pryzm raised 12M seed for federal procurement AI. December 2025 - Portfolio company AnySignal raised 24M Series A for multi-domain radio platform. December 2025 - Portfolio company Shift5 raised 75M Series C. August 2025 - Portfolio company Rilian Technologies signed major contract with UAE for OT security. First In appears to be actively deploying capital and supporting portfolio companies through follow-on rounds. Team and Governance Renny McPherson is Managing Partner. He is a former startup founder of RedOwl Analytics (security company acquired by Forcepoint/Raytheon in 2017), extensive enterprise tech investing background, former Principal at Brown Advisory with 75B+ AUM, Marine Corps intelligence officer, Harvard College graduate, and published in Washington Post, NPR, and Inc.com. Arthur Karell is Partner leading investments in defense, dual-use technologies, industrial automation, and digital asset security. He is former General Counsel and Head of Corporate Development at FiscalNote (NYSE: NOTE), former legal and corporate development leader at Anduril Industries, Marine Corps officer who served in Afghanistan, Harvard University graduate, and University of Virginia J.D. The firm has assembled an advisory board including Claudius E. Watts IV (Carlyle Group veteran and fighter pilot), Ish Boyle (CEO of Caveonix, former Zscaler VP, Marine Corps veteran), Matthew Thomas (30+ years CIA and Marine Corps service), Bobby Tuohy (Naval Academy graduate, Harvard MBA), Maggie Engler (Microsoft security researcher, Stanford PhD), and Brian O'Keefe (20+ years Army intelligence/special ops experience). The decision structure is partnership-based with active advisors providing domain expertise. The team includes founders, operators, and military/intelligence veterans. Core values are integrity, hard work, and 'get it done' attitude with confidence tempered by humility, performance first, and mission always. Founder and Company Preferences Ideal founder profile includes: Technical excellence with deep domain expertise in security, defense, or intelligence. Military or intelligence background preferred. Mission-driven mindset focused on solving critical security challenges. Execution focus with teams adaptable and brilliant at execution. First-hand pain points where founders are solving problems they've personally experienced. Prior exits or scale experience preferred. First In does NOT invest in consumer-focused security without dual-use applications, pure hardware without software differentiation, companies without clear security/defense applications, or teams without domain expertise in their vertical. Geographic Focus Primary focus is United States with emphasis on Washington D.C. and Northern Virginia but nationwide reach. Secondary focus is selective investments in allied nations with defense tech focus. The firm has demonstrated international reach through portfolio companies serving U.S. government with global operations. Notable Portfolio Achievements Exits include: RedOwl Analytics acquired by Forcepoint (Raytheon) 2017, Adlumin acquired by N-able 2024, and Syncurity acquired by Swimlane. High-growth companies include Anduril Industries (14B valuation), Shift5 (75M Series C), Castelion (350M+ funding), Immuta (169M+ raised), and Phylum (15M Series A). Unicorn potential exists with Anduril already at 14B, Shift5 trajectory, and Castelion 350M+ raised. Market Position and Competitive Advantage First In's differentiation includes: (1) Unique Operator Network providing unmatched domain expertise and credibility with defense ecosystem. (2) Commercial-Defense Bridge connecting Silicon Valley venture capital with defense/national security procurement. (3) Mission Alignment with fund by founders for founders solving national security challenges. (4) Active Support as operational partners with deep domain knowledge beyond just capital. (5) Government Relationships providing direct access to DoD, intelligence community, and military procurement. (6) Portfolio Synergies where companies benefit from cross-connections in defense/intelligence ecosystem. Investment Pace and Deployment Based on news and portfolio activity, First In is an active seed investor making multiple investments per quarter, participates in Series A rounds for portfolio companies, and takes a long-term hold patient capital approach suited to defense/cybersecurity development cycles. Broader Ecosystem Role First In has positioned itself as a thought leader in security technology investing through regular research publications on emerging themes in cybersecurity and defense tech, industry commentary with partners authoring pieces on zero trust and defense tech trends, serving as a venture community bridge helping Silicon Valley understand defense/national security opportunities, and providing advisory services where executives work with portfolio companies on GTM, scaling, and government relations. Summary First In Ventures is a specialized mission-driven seed-stage investor focused on security technology, defense innovation, and dual-use technologies. The firm's competitive advantage stems from its founding team's deep military, intelligence, and national security expertise combined with venture capital discipline and operational support. The portfolio spans cybersecurity infrastructure, defense platforms, data governance, and emerging dual-use technologies. With strong recent exits, high-growth portfolio companies, and continued active deployment, First In has established itself as the premier early-stage investor at the intersection of Silicon Valley innovation and national security needs.

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