Fundraising Fox

America's Frontier Fund

Venture capital

Arlington · Pre-Seed–Growth · 13 people tracked

Also known as AFF FUNDS, LLC · AMERICA'S FRONTIER MANAGEMENT, LLC

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Investment thesis

America's Frontier Fund invests in founders solving hard problems in deep tech, framing this as a moment of global strategic competition driven by science and technology. It targets domains others avoid — too regulated, capital-intensive, or far from consensus — where complexity hides scale and progress comes in decisive advances. The firm focuses on compute (microelectronics, infrastructure, networks), biology platforms, energy generation/storage/delivery, and manufacturing that rebuilds domestic production capacity. Beyond capital, it addresses demand as a key constraint, helping form markets through relationships, partnerships, and pathways to procurement. It highlights that government-backed companies have produced roughly a quarter of unicorns and positions founders to benefit from that tailwind.

Source: firm website, verified Aug 25, 2026.

Stage
Pre-Seed–Growth
Check
$500K – $10M
HQ
Arlington, Virginia, US
Leads rounds
Follows
Instruments
Equity
Founded
2021
Last 12 months
1 investment
Private fund assets
$38.2M
VC funds
1
Tracked investments
17

Team · 13 people

from the firm's website & public directories
Adam Hammer· General Partner
Marianne Winkler· CFO & General Partner
Mike Mettler· General Partner
Kevin McGinnis· Partner
John Watters· Venture Partner
Aneesh Mdhekar· Analyst
Brian Connor· Operations Manager
Sabrina Rosahan· Executive Director, AFF

What they invest in

from 13 of 17 portfolio companies

Deep Tech ×5Advanced Manufacturing ×4Energy ×3Healthtech ×3New Materials ×3AI & Machine Learning ×2Biotech ×2Cleantech ×2

HQs:United States×8

Investments · 17 tracked

founders shown can be your intro path

By year:2026 · 12024 · 12 dated

→ Foundation Alloyfoundationalloy.comin𝕏

Foundational Alloy develops engineering alloys through a solid-state process called MetalsFIRST, in which metal is produced without melting to create microstructures unreachable by conventional metallurgy while controlling oxygen and contaminants.

Advanced ManufacturingDeep TechNew Materials

Jasper Lienhard(Cofounder)Jake(Co-founder (company strategy, operations, financing, commercialization))

Co-investorsAlumni VenturesBasecamp FundCastor Ventures (an Alumni Ventures Fund)El Cap EquityMaterial ImpactSafar Partners+3 more

Antheia, Inc.antheia.bioin𝕏Jan 2026 · $24M

Antheia uses a yeast-based biosynthesis and fermentation platform to manufacture Key Starting Materials (KSMs) and Active Pharmaceutical Ingredients (APIs) for essential medicines, offering an alternative to fragile agricultural sourcing.

Advanced ManufacturingBiotechHealthtechMenlo Park, US

Christina D. Smolke(Executive Officer, Director)Christina Smolke(Co-Founder & CEO)inKristy Hawkins(Co-Founder & CSO)inEric d'Esparbes(Chief Financial Officer)inZack McGahey(Chief Operating Officer)inHeidi Pucel(Chief People Officer)in

Co-investorsCivilization Ventures Management, LlcLam CapitalSherpalo VenturesGlobal Health Investment Corporation

Bluexindustriesbluexindustries.com

BlueX Industries coordinates a network of vetted U.S.-based contract manufacturers to provide sourcing, production, assembly, testing, and distribution as a single accountable partner.

Advanced ManufacturingDefense TechLogistics & Supply Chain

Braintrancebraintrance.net

Braintrance is a platform for sharing and viewing immersive 3D and spatial media, including Gaussian splats, 360 and 180 photos and videos, GLB scenes, and panoramas.

ConsumerDeep TechMedia & Entertainment

Co-investorsEvolution VC Partners

Green Abundancegreenabundance.com

Co-investorsRipple VenturesDeep Checks

Halo Materialshalomaterials.comin

Halo Materials produces high-purity battery-grade and nuclear-grade graphite from domestic hydrocarbon feedstocks using a proprietary synthesis process, aiming for cost-parity with overseas incumbents.

CleantechEnergyNew Materials

Co-investorsRoadrunner Ventures

Heatflowheatflow.io

Heatflow develops advanced turbine and power conversion technology to enable the trilateral flash cycle, extracting more electricity from geothermal brine at existing plants.

CleantechClimate TechEnergy

iCOUNTER AI-driven Cyber Defenseicounter.comin

iCOUNTER provides CTOS (Counter Threat Operating System), a platform that detects active threats targeting an organization's third-party vendors, suppliers, MSPs, SaaS providers, and broader digital ecosystem in near real-time.

CybersecurityEnterprise SoftwareSaaS

Co-investorsJ2 Ventures

ModRetromodretro.comin

Irvine, US

Palmer Lucky(Executive Officer, Director)John Robertson(Founder)Torin Herndon(Executive Officer, Director)

Co-investorsHuman CapitalMVP VenturesTrousdale Ventures

Omnibudsomnibuds.techin

OmniBuds is developing an earbud platform that combines premium audio with continuous cardiovascular sensing, using ear-based signals such as PPG, acoustics, motion, and temperature to track patterns related to blood pressure, heart rhythm, vascular tone, stress, and circadian rhythm.

Digital HealthHardwareHealthtech

Path Powerpath-power.com

Reimagining underground power transmission through self-propelled cable systems.

Zac Judkins(Founder)in

Co-investorsBlindspot Ventures Management CoNucleation Capital

Perseus Materialsperseusmaterials.comin

Perseus Materials manufactures large-scale composite parts without molds or tooling using fast-curing resins and continuous fibers.

Advanced ManufacturingHardwareNew Materials

Co-investorsRoadrunner VenturesLockheed Martin Ventures

Revalia Bio, Inc.revaliabio.comin𝕏Oct 2024

Revalia Bio uses AI to convert donated human organs and tissues into multi-modal biological datasets and decision-ready insights for drug and device development.

AI & Machine LearningBiotechHealthtechNew Haven, US

Greg Tietjen(Co-Founder & Chief Executive Officer)inJenna DiRito(Co-Founder)Kourosh Saeb-Parsy(Co-Founder)Helen Hughes(Co-Founder & Chief People Officer)Peter Buniak(Co-Founder & Advisor)Jenna DiRito, PhD(Founder)in

Co-investorsConnecticut InnovationsDniproSierra VenturesBoxOne VenturesEntrepreneur First

Roadrunnerventurestudiosroadrunnerventurestudios.com

Roadrunner Venture Studios is a venture studio that builds and invests in deep tech startups across energy, advanced manufacturing, quantum, and advanced materials.

Deep TechEnergyQuantum Computing

Tacta Systemstactasystems.com

Tacta Systems is a robotics company building "Dextrous Intelligence," a control system that lets robots perform delicate, variable, human-like tasks with flexibility and autonomy.

AI & Machine LearningDeep TechRobotics

Co-investorsB Capital GroupB4 CapitalWoven CapitalMatter Venture PartnersSoftBank Group

Thunderstonethunderstone.rocksin

Extracting critical metals using high-voltage physics without moving the mountain.

Co-investorsDeep Science VenturesRoadrunner VenturesDangerous Ventures

Venus Aerospace Hypersonic Transportationvenusaero.comin𝕏

Venus Aerospace develops rotating detonation rocket engine (RDRE) technology and a detonation ramjet system for space, defense, and commercial high-speed and hypersonic flight.

Deep TechDefense TechSpace TechTexas, US

Sassie Duggleby(CEO & Co-founder)inAndrew Duggleby(CTO & Co-founder)inSarah "Sassie" Duggleby(Founder)inTom Barron(Chief Operating Officer)Nick Cardwell(Chief Product Officer)inSheila Menz(General Counsel)in

Co-investorsDraper AssociatesHalogen Ventures Management Company LlcHelios CapitalMercury FundPrime Movers LabRed Beard Ventures+8 more

Portfolio news

latest coverage across their companies

Frequently asked questions

How many investments has America's Frontier Fund made?
America's Frontier Fund has 17 tracked investments, including 2 dated in the last 24 months.
What stage does America's Frontier Fund invest at?
America's Frontier Fund invests at the Pre-Seed, Seed, Series A, Series B, Series C, Growth stages.
What is America's Frontier Fund's typical check size?
America's Frontier Fund typically writes checks of $500K – $10M.
What sectors does America's Frontier Fund focus on?
America's Frontier Fund focuses on Advanced Manufacturing, AI & Machine Learning, Biotech, Deep Tech, Defense Tech, Energy, Hardware, Semiconductors.
Where is America's Frontier Fund located?
America's Frontier Fund is headquartered in Arlington, US.
Does America's Frontier Fund lead rounds?
America's Frontier Fund typically participates in rounds rather than leading them.
Who does America's Frontier Fund co-invest with?
America's Frontier Fund most often shares deals with Roadrunner Ventures, B Capital Group, Connecticut Innovations, among 35 tracked co-investors.

Images

America's Frontier Fund photo

Co-investors · 10

Sierra Ventures

Sierra Ventures is an early-stage venture capital firm that invests in first-principles founders, backing companies from inception through Series A across AI infrastructure, applied/vertical AI, deep tech, and physical/embodied AI.

Both backed · 1
$10M
Matter Venture Partners

Matter Venture Partners is a venture capital firm focused on HardTech, combining deep operational experience and relationships with industry leaders to help HardTech startups scale.

Both backed · 1
New Enterprise Associates (NEA)

New Enterprise Associates (NEA) is a venture capital firm that invests in and provides long-term support to founders building new companies.

$200K – $40M
Norwest Venture Partners

Norwest Venture Partners is an investment firm whose growth equity team backs private, profitable, fast-growing companies, providing capital and hands-on support through its 'invited guest' approach.

$10M – $30M
Afore Capital

Afore Capital is a $500M pre-seed venture fund that invests in pre-traction, early-stage companies, leveraging product and investment expertise to support founders from day zero.

$500K – $2M
Two Sigma Ventures

Two Sigma Ventures has rebranded and is now known as Deviation Capital; the page directs visitors to the new website.

$2M – $15M
Vibe Capital

Vibe Capital is a $10M venture fund investing in Web3, AI, and Deep Science startups at the pre-seed and seed stage.

$250K – $500K
Comcast Ventures

Comcast Ventures is the venture capital arm of Comcast NBCUniversal, backing early- to growth-stage companies in sectors relevant to Comcast's future, and offering portfolio companies access to Comcast NBCUniversal's expertise, scale, network, and resources.

$2M – $15M
House

The House Fund is a pre-seed and early-stage venture capital fund backing startups founded by UC Berkeley alumni, faculty, students, and affiliates.

$1M – $2M
Neotribe Ventures

Neotribe Ventures is a venture capital firm that invests in early and growth-stage entrepreneurs solving complex, high-impact problems, backing bold and unconventional 'category-defining' ideas.

$250K – $2M

Firms observed investing alongside America's Frontier Fund, from public investor directories. Shared companies are the overlap with America's Frontier Fund's recorded portfolio.

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