Top Active Series A Investors & VCs Funding Startups in the US in 2025

Last update to database: August 17, 2026

Leading Growth-Stage Investors & Venture Capital Firms Funding Series A Startups Across the US

Series A funding continues to define a critical growth stage for US startups in 2025, helping founders scale proven products and expand into new markets. The top active Series A investors and VCs funding startups in the US are backing companies in AI, SaaS, fintech, health tech, and climate tech—sectors attracting the most venture capital activity this year.


These investors specialize in transforming early traction into sustainable growth, providing the capital, strategic guidance, and networks startups need to reach Series B and beyond. Many are headquartered in San Francisco, New York, Austin, and Boston, while others are global firms actively funding Series A rounds across the United States.


Our database highlights investors currently funding and supporting Series A startups in the US. Updated weekly, it offers founders, analysts, and business-development teams real-time visibility into who’s actively investing at the growth-stage level across America.

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Comprehensive Database of Active Series A Investors & VCs Funding US Startups – Updated Weekly

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Investor Name
Industry Focus Recent Investments Recent Investment Date Check Size Stage Focus Geography Focus Company Headquarters Firm Type Portfolio Size Portfolio Highlights Co-Investor Network
M13 Apps & Platforms, SaaS & Software, Artificial Intelligence, E-Commerce & Retail, Health Care & Wellness Subscribe to Unlock Subscribe to Unlock August, 2026 $500k–$1M Seed, Series A United States Santa Monica, California, United States Venture Capital 200 Subscribe to Unlock Subscribe to Unlock Bessemer Venture Partners, Fuel Capital, Compound, Homebrew, Union Square Ventures
Oak HC/FT Health Care & Wellness, Financial Services & FinTech Subscribe to Unlock Subscribe to Unlock August, 2026 $1M-$10M Seed, Series A, Series B, Series C, Series D United States Stamford, Connecticut, United States Venture Capital 100 Subscribe to Unlock Subscribe to Unlock Sapphire Ventures
Coinbase Blockchain & Cryptocurrency, Financial Services & FinTech, Apps & Platforms, Data & Analytics, SaaS & Software Subscribe to Unlock Subscribe to Unlock July, 2026 $1M-$10M Seed, Series A, Series B, Series C, Series D United States San Francisco, California, United States Corporate VC 461 Subscribe to Unlock Subscribe to Unlock Pantera Capital, Andreessen Horowitz, Polychain Capital, Dragonfly, Alameda Research
Tether.io Financial Services & FinTech, Blockchain & Cryptocurrency Subscribe to Unlock Subscribe to Unlock July, 2026 $1M-$10M Seed, Series A North America El Salvador, El Salvador Other 10 Subscribe to Unlock Subscribe to Unlock Unknown
Volition Capital SaaS & Software, Information Technology, Internet & Web Platforms, Consumer & Internet, Technology Subscribe to Unlock Subscribe to Unlock August, 2026 $1M-$10M Series A, Series B United States, Canada, Europe Boston, Massachusetts, United States Venture Capital 26 Subscribe to Unlock Subscribe to Unlock Unknown
Heavybit SaaS & Software, Artificial Intelligence, Information Technology, Cloud Infrastructure, Developer Tools Subscribe to Unlock Subscribe to Unlock July, 2026 $500k-$1M Pre-Seed, Seed, Series A United States, San Francisco San Francisco, California, United States Venture Capital 98 Subscribe to Unlock Subscribe to Unlock Redpoint Ventures, Uncork Capital, Felicis Ventures, Insight Partners, Chemistry VC
Owl Ventures EdTech and Training, SaaS & Software, Artificial Intelligence, Business & Professional Services Subscribe to Unlock Subscribe to Unlock July, 2026 $1M-$10M Seed, Series A, Series B, Series C United States, Europe, Asia San Francisco, California, United States Venture Capital 100 Subscribe to Unlock Subscribe to Unlock Sequoia Capital, Andreessen Horowitz, New Enterprise Associates, GSV Ventures, Reach Capital
Bain Capital Ventures Financial Services & FinTech, E-Commerce & Retail, Apps & Platforms, Artificial Intelligence, Health Care & Wellness Subscribe to Unlock Subscribe to Unlock August, 2026 $1M-$10M Seed, Series A, Series B, Series C United States San Francisco, California, United States Venture Capital 400 Subscribe to Unlock Subscribe to Unlock Unknown
Unusual Ventures Business & Professional Services, SaaS & Software Subscribe to Unlock Subscribe to Unlock July, 2026 $1M–$10M Pre-Seed, Seed, Series A United States Menlo Park, California, United States Venture Capital 30 Subscribe to Unlock Subscribe to Unlock Unknown
Index Ventures SaaS & Software, Enterprise, Consumer, Artificial Intelligence, Financial Services & FinTech Subscribe to Unlock Subscribe to Unlock August, 2026 $500k-$1M Seed, Series A, Series B United States, Europe, Israel London, England, United Kingdom Venture Capital 669 Subscribe to Unlock Subscribe to Unlock Sequoia Capital, Accel, Benchmark, Lightspeed Venture Partners
Castle Island Ventures Blockchain & Cryptocurrency, Financial Services & FinTech, Artificial Intelligence, SaaS & Software, Data & Analytics Subscribe to Unlock Subscribe to Unlock August, 2026 $100k-$500k Seed, Series A United States Boston, Massachusetts, United States Venture Capital 72 Subscribe to Unlock Subscribe to Unlock Andreessen Horowitz, Union Square Ventures, Polychain Capital, Paradigm
Kleiner Perkins Biotechnology, E-Commerce & Retail, Information Technology, SaaS & Software, Financial Services & FinTech Subscribe to Unlock Subscribe to Unlock July, 2026 $1M-$10M Seed, Series A, Series B, Series C United States, China, South Korea, Germany, United Kingdom, India Menlo Park, California, United States Venture Capital 300 Subscribe to Unlock Subscribe to Unlock Facebook, Zynga, Amazon.com
Standard Capital Artificial Intelligence, SaaS & Software, Business & Professional Services Subscribe to Unlock Subscribe to Unlock August, 2026 $1M-$10M Series A United States, San Francisco San Francisco, California, United States Venture Capital 2 Subscribe to Unlock Subscribe to Unlock Y Combinator, Ali Rowghani, Paul Buchheit, Paul Graham, SV Angel
First Round Capital Enterprise (mapped as Business & Professional Services), Artificial Intelligence, Hardware (mapped as Electronics & Devices), Health Care & Wellness, Financial Services & FinTech Subscribe to Unlock Subscribe to Unlock August, 2026 $1M–$10M Pre-seed, Seed, Series A United States San Francisco, California, United States Venture Capital 500 Subscribe to Unlock Subscribe to Unlock Unknown
CRV SaaS & Software, Financial Services & FinTech, Information Technology, Apps & Platforms, Enterprise Software Subscribe to Unlock Subscribe to Unlock July, 2026 $1M-$10M Seed, Series A, Series B United States Palo Alto, California, United States Venture Capital 750 Subscribe to Unlock Subscribe to Unlock Sequoia Capital, Andreessen Horowitz, Accel, Benchmark, Greylock Partners
FirstMark SaaS & Software, Financial Services & FinTech, Information Technology, Apps & Platforms, Artificial Intelligence Subscribe to Unlock Subscribe to Unlock August, 2026 $250k-$10M Seed, Series A, Series B North America, United States, New York City New York, New York, United States Venture Capital 130 Subscribe to Unlock Subscribe to Unlock Sequoia Capital, Accel, Andreessen Horowitz, Lightspeed Venture Partners
IndiaQuotient SaaS & Software, B2B Marketplaces, Financial Services & FinTech, Social & Lifestyle Networks, Media & Content Creation Subscribe to Unlock Subscribe to Unlock July, 2026 $500k-$1M Pre-Seed, Seed India, Global Bengaluru, Karnataka, India Venture Capital 100 Subscribe to Unlock Subscribe to Unlock Angel Investors, Various Seed and Series A investors
Glade Brook Capital Partners Enterprise Applications, Consumer, High Tech, SaaS & Software, Information Technology Subscribe to Unlock Subscribe to Unlock July, 2026 $10M-$20M Series B, Series C, Series D United States, China, India Greenwich, Connecticut, United States Venture Capital 42 Subscribe to Unlock Subscribe to Unlock Fidelity Investments, Bain Capital Ventures, General Catalyst, Nexus Venture Partners
Y Combinator Apps & Platforms, SaaS & Software, Artificial Intelligence, Biotechnology, EdTech and Training Subscribe to Unlock Subscribe to Unlock August, 2026 $500k-$1M Pre-Seed, Seed, Series A, Series B United States, North America United States Accelerator 5000 Subscribe to Unlock Subscribe to Unlock Top startup investors (network introduced by YC)
SJF Ventures Health Care & Wellness, GreenTech & Sustainability, SaaS & Software, Information Technology, Business & Professional Services Subscribe to Unlock Subscribe to Unlock July, 2026 $1M-$10M Series A, Series B, Series C United States Durham, North Carolina, United States Venture Capital 50 Subscribe to Unlock Subscribe to Unlock Unknown
Elevation Capital Consumer Tech, Financial Services & FinTech, SaaS & Software, Artificial Intelligence, Health Care & Wellness Subscribe to Unlock Subscribe to Unlock August, 2026 $1M-$10M Pre-Seed, Seed, Series A, Series B India Gurgaon, Haryana, India Venture Capital 50 Subscribe to Unlock Subscribe to Unlock Unknown
Zigg Capital Real Estate, Financial Services & FinTech, SaaS & Software, Developer Tools Subscribe to Unlock Subscribe to Unlock August, 2026 $250k-$2M Pre-Seed, Seed, Series A United States, New York New York, New York, United States Venture Capital 44 Subscribe to Unlock Subscribe to Unlock Unknown
Techstars Apps & Platforms, Artificial Intelligence, SaaS & Software, Financial Services & FinTech, Health Care & Wellness Subscribe to Unlock Subscribe to Unlock July, 2026 $250k-$500k Pre-Seed, Seed, Series A North America, Europe, Middle East, Africa, Asia, Australia New York City, New York, United States Accelerator 3700 Subscribe to Unlock Subscribe to Unlock Sequoia Capital, Accel, Bessemer Ventures, Lightspeed Venture Partners, First Round Capital
Breachway Capital SaaS & Software, Artificial Intelligence, Data & Analytics, Apps & Platforms, Business & Professional Services Subscribe to Unlock Subscribe to Unlock July, 2026 $1M-$10M Series A, Series B, Series C, Series D United States, North America Boston, Massachusetts, United States Venture Capital 20 Subscribe to Unlock Subscribe to Unlock Unknown
FCA Venture Partners Health Care & Wellness, Biotechnology, SaaS & Software, Artificial Intelligence, Financial Services & FinTech Subscribe to Unlock Subscribe to Unlock July, 2026 $1M-$10M Seed, Series A, Series B United States Nashville, Tennessee, United States Venture Capital 50 Subscribe to Unlock Subscribe to Unlock Unknown
Baruch Future Ventures Energy, GreenTech & Sustainability, Biotechnology, Manufacturing, Science & Engineering Subscribe to Unlock Subscribe to Unlock July, 2026 $1M-$10M Seed, Series A, Series B United States, San Francisco San Francisco, California, United States Venture Capital 54 Subscribe to Unlock Subscribe to Unlock Energy Impact Partners, Breakthrough Energy Ventures, The Westly Group
Mayfield Artificial Intelligence, Financial Services & FinTech, Health Care & Wellness, SaaS & Software, Information Technology Subscribe to Unlock Subscribe to Unlock July, 2026 $1M–$10M Seed, Series A, Series B United States, India Menlo Park, California, United States Venture Capital 150 Subscribe to Unlock Subscribe to Unlock Unknown
The House Fund Artificial Intelligence, SaaS & Software, Information Technology, Data & Analytics, Business & Professional Services Subscribe to Unlock Subscribe to Unlock July, 2026 $500k-$1M Pre-Seed, Seed, Series A United States, Berkeley Berkeley, California, United States Venture Capital 100 Subscribe to Unlock Subscribe to Unlock Sequoia Capital, Andreessen Horowitz, Lightspeed Venture Partners
Wing Venture Capital Artificial Intelligence, Data & Analytics, Autonomous apps & Platforms, Web3, Biotechnology Subscribe to Unlock Subscribe to Unlock July, 2026 $1M-$10M Pre-Seed, Seed, Series A United States Palo Alto, California, United States Venture Capital 22 Subscribe to Unlock Subscribe to Unlock Y Combinator, Uncork Capital, Greylock, Tiger Global Management, Madrona Venture Group, Google Ventures
Accel SaaS & Software, Information Technology, Financial Services & FinTech, Health Care & Wellness, Artificial Intelligence Subscribe to Unlock Subscribe to Unlock August, 2026 $1M-$10M Seed, Series A, Series B, Series C, Series D United States, United Kingdom, India, China Palo Alto, California, United States Venture Capital 1133 Subscribe to Unlock Subscribe to Unlock Y Combinator, Sequoia Capital, Tiger Global Management, Insight Partners, Lightspeed Venture Partners
FJ Labs Apps & Platforms, Marketplace, E-Commerce & Retail, Logistics & Transportation, Financial Services & FinTech Subscribe to Unlock Subscribe to Unlock August, 2026 $500k–$1M Pre-seed, Seed, Series A, Series B, Growth, Late-stage United States, Europe, Asia, Latin America New York, New York, United States Venture Capital 1000 Subscribe to Unlock Subscribe to Unlock Unknown
Mucker Capital SaaS & Software, Information Technology, Apps & Platforms Subscribe to Unlock Subscribe to Unlock July, 2026 $500k-$1M Seed, Series A United States, Canada Venice, California, United States Venture Capital 90 Subscribe to Unlock Subscribe to Unlock Unknown
Ibex Investors Mobility, Energy, Transportation, Technology, Financial Services & FinTech Subscribe to Unlock Subscribe to Unlock July, 2026 $1M-$10M Seed, Series A, Series B, Series C Israel, United States Denver, Colorado, United States Venture Capital 100 Subscribe to Unlock Subscribe to Unlock Cisco, Spire Capital, Intuit, LinkedIn, Checkpoint
Obvious Ventures GreenTech & Sustainability, Health Care & Wellness, Food & Drink, SaaS & Software, Science & Engineering Subscribe to Unlock Subscribe to Unlock July, 2026 $1M-$10M Seed, Series A, Series B United States, Europe San Francisco, California, United States Venture Capital 60 Subscribe to Unlock Subscribe to Unlock SOSV, Fifty Years, DBL Partners, Congruent Ventures
Taiwania Capital Technology, Artificial Intelligence, Cyber Security & Privacy, Robotics, Health Care & Wellness Subscribe to Unlock Subscribe to Unlock July, 2026 $1M-$10M Series A, Series B, Series C, Series D Asia, United States, Japan, Southeast Asia, Central East Europe Taipei, Taipei City, Taiwan Venture Capital 60 Subscribe to Unlock Subscribe to Unlock AWS, Arm, MediaTek, Lead Ventures, J&T Ventures
Companyon Ventures Artificial Intelligence, Cyber Security & Privacy, Financial Services & FinTech, SaaS & Software, Logistics & Transportation Subscribe to Unlock Subscribe to Unlock July, 2026 $1M-$10M Series A United States Boston, Massachusetts, United States Venture Capital 40 Subscribe to Unlock Subscribe to Unlock Unknown
Impellent Ventures SaaS & Software, Financial Services & FinTech, Healthcare & Wellness, Artificial Intelligence, Marketing, Advertising & Sales Subscribe to Unlock Subscribe to Unlock July, 2026 $500k-$1M Pre-Seed, Seed, Series A United States Rochester, New York, United States Venture Capital 14 Subscribe to Unlock Subscribe to Unlock NextView Ventures, Hubspot Ventures, Accomplice, BMC, Asymmetric Capital Partners
Headline Financial Services & FinTech, Consumer Services, SaaS & Software, Artificial Intelligence, E-Commerce & Retail Subscribe to Unlock Subscribe to Unlock July, 2026 $1M-$10M Seed, Series A, Series B, Series C, Series D United States, Europe, Asia, South America San Francisco, California, United States Venture Capital 40 Subscribe to Unlock Subscribe to Unlock Unknown
Samsung Catalyst Fund Artificial Intelligence, Hardware, Information Technology, SaaS & Software, Data & Analytics Subscribe to Unlock Subscribe to Unlock July, 2026 $1M-$10M Seed, Series A, Series B, Series C United States, Asia, Europe San Jose, California, United States Corporate VC 66 Subscribe to Unlock Subscribe to Unlock Y Combinator, National Science Foundation, New Enterprise Associates, Plug and Play
Bessemer Artificial Intelligence, Biotechnology, Cyber Security & Privacy, Financial Services & FinTech, SaaS & Software Subscribe to Unlock Subscribe to Unlock August, 2026 $1M–$10M Seed, Series A, Series B, Series C North America, Europe, Israel, India San Francisco, California, United States Venture Capital 390 Subscribe to Unlock Subscribe to Unlock Unknown
Aymo Ventures SaaS & Software, Financial Services & FinTech, Artificial Intelligence, Business & Professional Services, Marketing, Advertising & Sales Subscribe to Unlock Subscribe to Unlock July, 2026 $500k-$1M Seed, Series A, Series B Europe, Southeast Europe Zagreb, City of Zagreb, Croatia Venture Capital 40 Subscribe to Unlock Subscribe to Unlock Unknown
F-Prime Health Care & Wellness, Biotechnology, SaaS & Software, Artificial Intelligence, Financial Services & FinTech Subscribe to Unlock Subscribe to Unlock August, 2026 $1M-$10M Seed, Series A, Series B, Series C, Series D United States, Europe, Asia Cambridge, Massachusetts, United States Venture Capital 499 Subscribe to Unlock Subscribe to Unlock Eight Roads, Fidelity Ventures, Various global VC partners
Fundomo Artificial Intelligence, Biotechnology, Energy, Hardware, SaaS & Software Subscribe to Unlock Subscribe to Unlock July, 2026 $100k-$250k Seed, Series A, Series C United States New York, New York, United States Venture Capital 5 Subscribe to Unlock Subscribe to Unlock Fontinalis Partners
Founders Factory FinTech, Health Care & Wellness, GreenTech & Sustainability, Artificial Intelligence, Deep Tech Subscribe to Unlock Subscribe to Unlock July, 2026 $100k-$250k Pre-Seed, Seed Europe, North America, Asia, Africa, Australia London, United Kingdom Accelerator 400 Subscribe to Unlock Subscribe to Unlock Aviva, Rio Tinto, Vonovia, Fastweb, Nesta
Catalyst Investors Enterprise Applications, High Tech, Health Care & Wellness, SaaS & Software, Enterprise Infrastructure Subscribe to Unlock Subscribe to Unlock July, 2026 $10M-$20M Series A, Series B, Series C, Series D United States, Israel, Canada, United Kingdom New York, New York, United States Venture Capital 48 Subscribe to Unlock Subscribe to Unlock Citi, Battery Ventures, Blue Cloud Ventures, Pelion Venture Partners, QED Investors
MissionOG Financial Services & FinTech, Data & Analytics, SaaS & Software, Business & Professional Services, Software Subscribe to Unlock Subscribe to Unlock June, 2026 $5M-$10M Pre-Seed, Seed, Series A, Series B United States, Canada Philadelphia, Pennsylvania, United States Venture Capital 40 Subscribe to Unlock Subscribe to Unlock Curql Fund, Michigan Capital Network
Left Lane Capital Financial Services & FinTech, Health Care & Wellness, SaaS & Software, Media & Content Creation, Business & Professional Services Subscribe to Unlock Subscribe to Unlock June, 2026 $1M-$10M Seed, Series A, Series B United States Brooklyn, New York, United States Venture Capital 80 Subscribe to Unlock Subscribe to Unlock General Catalyst, Y Combinator, Coatue Management, 9FJ Labs
212 B2B technology, Apps & Platforms, SaaS & Software, Artificial Intelligence, Financial Services & FinTech Subscribe to Unlock Subscribe to Unlock June, 2026 $1M-$10M Seed, Series A, Series B Europe, Middle East, North America Istanbul, Turkey Venture Capital 42 Subscribe to Unlock Subscribe to Unlock Unknown
Xfund Consumer & Lifestyle, Enterprise Technology, Health Care & Wellness, SaaS & Software, Artificial Intelligence Subscribe to Unlock Subscribe to Unlock June, 2026 $100k-$250k Pre-Seed, Seed, Series A United States Cambridge, Massachusetts, United States Venture Capital 70 Subscribe to Unlock Subscribe to Unlock New Enterprise Associates, Accel Partners, Breyer Capital, Polaris Partners
Khosla Ventures Artificial Intelligence, Health Care & Wellness, GreenTech & Sustainability, SaaS & Software, Financial Services & FinTech Subscribe to Unlock Subscribe to Unlock August, 2026 $1M–$10M Pre-seed, Seed, Series A, Series B, Growth United States, Global Menlo Park, California, United States Venture Capital 100 Subscribe to Unlock Subscribe to Unlock Unknown

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