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Warm Fund

Third Prime

www.thirdprime.vc · New York, New York

“Third Prime invests in companies rewiring how capital, assets, and operations move through the economy. We focus on three intersecting 'real-economy infrastructure' verticals—fintech, proptech, and crypto/blockchain—backing platforms that enable paradigm shifts in these sectors.”

$1M – $5M
Check Size
Leads & Follows
Lead Tendency
$500M
AUM
~2 Weeks
Timeline
01Investment Thesis

We believe technology should serve real economic activity, not replace it.

Exclusion Criteria

We avoid unfocused generalist approaches, consumer social media, pure gaming, non-core sectors, and teams without domain expertise. We focus on infrastructure that powers economic activity, not consumer experiences.

02Investment Team
KH
Keith Hamlin
Co-Founder and General Partner
WB
Wesley Barton
Co-Founder and General Partner
MK
Mike Kim
General Partner
JB
Jenny Bloom
General Counsel / COO
JL
Jason Lee
Operating Partner
KR
Kristen Rooney
Head of Business Development
CK
Christian Kaczmarczyk
Principal
BR
Benji Rosenblatt
Vice President
SP
Steve Parker, Jr.
Venture Partner
JA
Jeff Adelson-Yan
Venture Partner
03F4 Research Brief

Third Prime Research Document

Investment Thesis

Third Prime is a specialized venture capital fund focused exclusively on three intersecting "real-economy infrastructure" verticals: fintech, proptech, and crypto/blockchain. The firm believes that paradigm-shifting companies emerge at the intersection of these sectors, specifically backing platforms that rewire how capital, assets, and operations move through the economy rather than taking a broad multi-sector approach.

Founded in 2016 by Wes Barton and Keith Hamlin, Third Prime brings a unique philosophy grounded in patience, stewardship, and community building—principles Barton developed during his decade as a working farmer. This farmer-centric philosophy translates into long-horizon, relationship-driven capital partnerships that prioritize founder success alongside financial returns.

Sector Focus & Investment Thesis

Third Prime concentrates its time and capital across three primary verticals:

Fintech: Digital payments, earned wage access, embedded finance, open banking, credit infrastructure, and financial wellness platforms. The firm has backed companies like Paywatch (Asia payroll/financial wellness), Octane (alternative asset financing), and Circle (blockchain-based digital currency). They focus on financial infrastructure that democratizes access to capital and financial services globally.

PropTech: Real estate technology and operations software that transforms how property transactions, management, and valuation happen. Portfolio includes Latch (enterprise access solutions, exited via IPO), Cubby (self-storage operations software), and HouseAmp (renovation financing for home sellers). They believe technology can fundamentally improve how real estate operates at scale.

Crypto & Blockchain: Infrastructure, security, and financial applications built on blockchain technology. Portfolio includes Circle (USDC stablecoin), Nova Labs (decentralized 5G network), Chaos Labs (blockchain security), and Halborn (smart contract audits). The firm views blockchain as essential infrastructure for the next generation of financial and communication systems.

Recent Strategic Focus & Evolution

In recent years, Third Prime has expanded into emerging infrastructure plays while maintaining their core thesis. Notable recent investments signal expansion into:

  • Industrial Tech & Manufacturing: Everstar (AI for nuclear operations), First Resonance (manufacturing optimization), Stell (aerospace supply chain)
  • Compliance & Risk: ValidMind (AI model validation), Thoropass (compliance automation), Serent (healthcare RCM)
  • AI-Powered Operations: Datch (industrial operations intelligence), CalmWave (hospital automation), Autobiographer (AI-powered life narrative)
  • Robotics & Automation: Bone (autonomous robotics and AI systems)

These expansions remain consistent with their core "real-economy infrastructure" thesis—enabling businesses to operate more efficiently through technology.

Stage Focus & Ticket Size

Third Prime invests primarily at the Seed stage, with occasional pre-seed and Series A participation:

  • Pre-Seed: $250K-$500K for early product and initial traction
  • Seed: $1M-$5M (primary check size)
  • Series A: Selective follow-ons and co-leads for portfolio companies demonstrating strong product-market fit

Typical investment range: $1M-$5M, with flexibility for exceptional teams and market opportunities.

Lead Tendency

Third Prime exhibits a mixed approach: They frequently lead seed rounds for portfolio companies but also participate in co-led structures. They demonstrate strong conviction in their portfolio through multiple follow-on investments and provide operational support beyond capital. As of 2025, the firm has made 9 new investments in the last 12 months, with 130+ companies in their portfolio across multiple funds.

Fund Details & Activity

Assets Under Management: $500M+

Fund Status: Actively deploying. Recent activity data from Dec 2025 shows the firm continues to invest heavily:

  • Latest investments include Bone (robotics/AI, Nov 2025), Verisoul (fraud detection), and Cubby (Series A, Jan 2026)
  • Fund has deployed capital to 6+ new companies in last 12 months
  • Maintains active portfolio management with follow-on investments in existing companies

Geographic Focus: United States (primary), with selective international investments in Europe, Israel, and Asia for sector-specific opportunities.

Decision Process: Partnership-driven. The fund operates as a partnership of GPs and senior investment professionals, with decision-making distributed across multiple partners (GPs: Keith Hamlin, Wes Barton, Mike Kim).

Team & Key Personnel

Founders & Leadership:

  • Wes Barton (Co-Founder & GP): Decade at Trimaran/Trian in PE/hedge funds, tech investment banker at Skadden, J.D. from Duke Law. Brings "farmer" philosophy and long-term value creation mindset.
  • Keith Hamlin (Co-Founder & GP): 7 years as M&A lawyer at Skadden, SVP at Pan Am Equities managing alternative investments and real estate. J.D. from Harvard Law.
  • Mike Kim (General Partner): Partner at Valinor Management and Suvretta Capital, 10+ years investing in public/private markets, Georgetown graduate.

Key Operational & Investment Staff:

  • Jenny Bloom (General Counsel / COO): Former corporate associate at Wilson Sonsini and Skadden, Harvard Law graduate. Brings venture and M&A expertise.
  • Jason Lee (Operating Partner): Serial entrepreneur who founded DailyPay ($2B exit 2022) and Salt Labs ($200M Chime acquisition 2024). Recognized innovator and corporate board advisor.
  • Kristen Rooney (Head of Business Development): Former IR/Marketing lead at Engle Capital, investor relations specialist.
  • Christian Kaczmarczyk (Principal): Former builder at BlockFi, Bison Trails, FalconX; crypto ecosystem investor.
  • Benji Rosenblatt (Vice President): PE background at Macquarie Capital in software/services, Princeton graduate.

Venture Partners:

  • Steve Parker, Jr. (CEO & Co-Founder of Levelwing marketing firm)
  • Jeff Adelson-Yan (President & Co-Founder of Levelwing)

Portfolio Highlights

Notable Exits:

  • Chime Financial (IPO) - digital banking
  • Circle (IPO) - blockchain/USDC
  • Latch (IPO) - enterprise access solutions
  • WhoSay (Viacom acquisition) - influencer marketing
  • Spruce (Zillow acquisition) - title insurance tech
  • MoneyKit (M&A exit) - financial data aggregation
  • Rize (Fifth Third Bank acquisition) - embedded finance
  • Salt Labs (Chime acquisition, ~$200M) - workplace savings
  • ZipDrug (IngenioRx acquisition) - pharmacy delivery

Active Portfolio Highlights (130+ portfolio companies):

  • Everstar: AI-powered compliance for nuclear operations and energy
  • Moonware: Aviation ground operations automation
  • Octane: Lifestyle asset financing (powersports, RVs)
  • Paywatch: Earned wage access and financial wellness for Asia
  • GreenSpark: Metal recycling operations software
  • Cubby: Self-storage operations platform
  • FirstResonance: Manufacturing optimization (ION Factory OS)
  • Halborn: Smart contract security and blockchain audits
  • Nova Labs: Decentralized 5G and LoRaWan network
  • Monite: Embedded finance platform for SMBs
  • ValidMind: AI model validation and compliance
  • Bone: Autonomous robotics and AI systems
  • Verisoul: Fraud detection platform (bot/duplicate detection)

And 117+ additional portfolio companies across fintech, proptech, and blockchain verticals.

Investment Decision Process & Timeline

Decision Structure: Partnership governance with GP consensus required for investments above certain thresholds. Operating partners like Jason Lee provide strategic input on operational aspects.

Decision Timeline: Typical seed rounds 2-4 weeks from final meeting to term sheet, with flexibility for exceptional opportunities.

Warm Intro Preference: Strong preference for warm introductions through their network, though will consider cold outreach from exceptional founders.

Founder Preferences & Anti-Thesis

Ideal Founder Profile:

  • Technical or operations-focused founders with domain expertise
  • Teams that have demonstrated traction (MVP or early revenue)
  • Founders solving real problems in their three core sectors
  • Teams with coachability and genuine partnership orientation
  • Experienced operators with successful exits or scaling experience

Anti-Thesis:

  • Unfocused "everything to everyone" strategies
  • Teams without domain expertise in their chosen vertical
  • Non-core sectors outside fintech, proptech, or blockchain
  • Consumer/social media plays
  • Hard hardware without accompanying software/data moat

Competitive Advantages & Positioning

  1. Sector Specialization: Focused thesis attracts founders in target verticals who benefit from specialized expertise
  2. Multi-Sector Infrastructure Play: Unique positioning at intersection of fintech, proptech, and crypto creates cross-portfolio learning
  3. Operational Partnership: Access to successful founders (Jason Lee) and experienced operators (Jenny Bloom, Christian Kaczmarczyk)
  4. Track Record of Exits: Multiple IPO and strategic exits demonstrate ability to scale companies successfully
  5. Long-Term Capital: Patient capital and relationship-focused approach appeals to founders seeking true partners
  6. Global Network: Investments across US, Europe, Israel, and Asia provide international distribution and market insights

Recent Activity & Fund Momentum

  • 9 new investments in 2025 (through November) signal strong deployment pace
  • Recent closes: Cubby Series A (Jan 2026), Bone (Nov 2025), Verisoul integration
  • Co-investor relationships: Strong patterns of follow-on investments and portfolio company interconnectedness
  • Market positioning: Continues to lead or co-lead seed rounds in target verticals

Fund Strategy Observations

Third Prime's strategy reflects:

  • Concentrated conviction: Deep focus on three verticals enables them to build unique expertise
  • Pattern matching: Ability to connect portfolio companies for B2B partnerships and customer introductions
  • Patient capitalism: Long-horizon approach aligns with founder incentives for sustainable growth
  • Value-add beyond capital: Operational expertise, founder networks, and strategic introductions
  • Category leadership: Positioning as the "real-economy infrastructure VC" differentiates from generalist and pure-SaaS focused funds
04Selected Portfolio
Biotech & Life Sciences
Latch
Climate & Sustainability
Everstar
Crypto & Web3
Halborn·Chaos Labs
E-commerce & Marketplaces
UnityAI
Enterprise Software
Moonware·GreenSpark·ValidMind·First Resonance·Datch·Cubby·Croissant·ReSpark
Fintech & Payments
Octane·Paywatch·Chime·Monite·HouseAmp·MoneyKit·Climb Credit·January·Alternative·Finerio Connect·Prism Data·Limited
Healthcare & Digital Health
CalmWave
Insurance
Instnt
Marketing & Adtech
WhoSay
Real Estate & PropTech
Spruce
Robotics & Automation
Bone
Security & Cybersecurity
Verisoul
Other
Circle·Nova Labs·Kafene
Open the full portfolio→
05Recent Updates

Fresh signals from public announcements, essays, and portfolio activity.

See full activity (9) →
Portfolio company GreenSpark combined with ReMatter to form ReSpark, the metal recycling industry's definitive software platform.
MILESTONE·businesswire.com
APR 9, 2026
Recent investment in ReSpark, a software platform for metal scrapyards to streamline operations and material tracking.
INVESTMENT·thirdprime.vc
APR 2026
Led $8.5M Series A for UnityAI, an AI company building autonomous workflows for healthcare operations and patient coordination.
INVESTMENT·tallahassee.com
MAR 4, 2026
Invested in Croissant's seed round for a resale platform promoting circular economy in retail.
INVESTMENT·ffnews.com
FEB 2026
Led Series A investment in Cubby, a self-storage operating system for pricing, marketing, and operations management.
INVESTMENT·thirdprime.vc
JAN 2026
06Frequent co-investors
MV
MS&AD Ventures
Both backed 2 of the same companies
Instnt, ValidMind
PV
Point72 Ventures
Both backed 2 of the same companies
ValidMind, Monite
SV
Stage Venture Partners
Both backed 2 of the same companies
Datch, First Resonance
U
Upper90
Both backed 2 of the same companies
Octane, January
VV
Valar Ventures
Both backed 2 of the same companies
Octane, Monite
Find the investors for your round→
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Quick Reference
Check Size
$1M – $5M
Stages
Pre-Seed · Seed · Series A
AUM
$500M
Decision
Partnership · ~2 Weeks
Warm Intro
Preferred
Involvement
Board Seat
Location
New York, New York
Sector Focus
Fintech & PaymentsReal Estate & PropTechManufacturing & IndustrialRobotics & AutomationSecurity & Cybersecurity
Models
FinTechPropTechBlockchain/CryptoReal-Estate Tech
Technology
BlockchainAI/MLAutomationOperations Software
See all Fintech & Payments investors →See all Real Estate & PropTech investors →See all Manufacturing & Industrial investors →
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Focus Areas
Fintech & PaymentsReal Estate & PropTechManufacturing & IndustrialRobotics & AutomationSecurity & Cybersecurity

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F4 Intelligence Report · Last Researched July 19, 2026F4 Research Engine