Flex Capital

$200M early-stage venture firm led by founder-CEOs investing in bold technical teams

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Updated: Dec 2, 2025 ·

About

$200M early-stage venture firm led by founder-CEOs investing in bold technical teams

Financial History

Total Raised

N/A

Valuation

N/A

Investments Made

Date	Company	Round	Lead Investor(s)	Co-Investor(s)
Oct 3, 2025	Supabase	$100.0M Series E	—	Accel, Figma Ventures, Peak XV Partners, Coatue, Felicis Ventures, Lightspeed India Partners, Preston-Werner Ventures, Y Combinator, Augusto Marietti, Ben Tossell, Christopher Golda, Kevin Weil, Scott Belsky
Oct 1, 2025	Tensormesh	$5.0M Seed	—	AIX Ventures, C2 Investment, DTCP, Innovation Endeavors, IVP, Maven Ventures, The Hit Forge, Y Combinator, Amjad Masad, Balaji Srinivasan, Bob Muglia, Dylan Field, Jeff Bezos, Mattia Astori, Shane Neman, Stanley Druckenmiller, Tobias Lutke, Yann LeCun
Oct 1, 2025	SiC Systems	$3.0M Seed	—	Altair Capital Management, Alumni Ventures, Amino Capital, Array Ventures, Ascend Vietnam Ventures, B Capital Group, Brainstorm Ventures, Canvas Ventures, Chapter One Ventures, Climate Capital, Dreamers VC, f7 Ventures, Foundation Capital, FreeSky Capital, Frontier Ventures, Gaingels, Ideas & Capital, Infinite Niches, LombardStreet Ventures, Long Journey Ventures, Mindset Ventures, Modern Venture Partners, Peak State Ventures, Plug & Play Ventures, Safar Partners, Sequoia Capital, UpHonest Capital, Virginia Venture Partners, Adam D'Angelo, Christopher Nguyen, Clark Landry, Eric Bunting, Faizan Khan (Unchained Capital), Gokul Rajaram, Jed Ng, Jeff Morris, Kintan Brahmbhatt, Marat Kichikov, Sahin Boydas, Scott Banister, Siqi Chen, Sue Xu
Sep 1, 2025	Flex	$15.0M Series A	—	BoxGroup, First Round Capital, Insight Partners, Y Combinator, Arash Ferdowsi, Ayush Sood, John Griffin, Kulveer Taggar, Matt Macinnis, Shivaas Gulati
Sep 1, 2025	Gravity	$3.0M Seed	—	645 Ventures, Boost VC, Draper Associates, Foundry Group, Freestyle Capital, Lobby Capital, Recursive Ventures, Redpoint Ventures, Marco DeMeireles, Trajectory Ventures, True Ventures, Upfront Ventures, Thomas Noonan
Sep 1, 2025	Hello Patient	$23.0M Series A	—	8VC, Alumni Ventures, Coughdrop Capital, Harlem Capital, Innovation Endeavors, Max Ventures, Next Play Ventures, Scale Venture Partners, Andrew Berman, Julius Genachowski, Russell Fradin, Russ Fradin
Sep 1, 2025	bitrig	$500K Seed	—	BoxGroup, Insight Partners, Y Combinator, Shivaas Gulati
Sep 1, 2025	Anything	$11.0M Series A	—	Bessemer Venture Partners, CRV, Footwork, Stellar Capital, Uncork Capital, Adam D'Angelo, Ben Tossell, Mathilde Collin, Tobias Lutke, Travis May
Sep 1, 2025	InCountry	$10.0M Venture Round	—	Arbor Ventures, CRV, Team Builder Ventures, Andy Rankin
Sep 1, 2025	CHARM Therapeutics	$80.0M Series B	—	Andreessen Horowitz, Bowery Capital, Creandum, EQT Partners, F-Prime Capital Partners, General Catalyst, Hyperplane Venture Capital, Khosla Ventures, Matthew McAviney, New Enterprise Associates, OrbiMed, Silence, Roger Ehrenberg, Shervin Pishevar, Susanna Campbell
Sep 1, 2025	Cacao	$500K Seed	—	Y Combinator
Sep 1, 2025	CodeRabbit	$60.0M Series B	—	Alpine Ventures, CRV, Engineering Capital, Scale Venture Partners
Sep 1, 2025	Inversion	$27.0M Seed	—	6th Man Ventures, Adjacent, Day One Ventures, DST Global, Embedded Ventures, Emergence Capital, Aniq Kassam, Felicis Ventures, Friends & Family Capital, Global Founders Capital, Greenoaks Capital, Iterative, Kohala Ventures, Lockheed Martin Ventures, Matrix, Otherwise Fund, Paradigm, Spark Capital, Summit Partners, SV Angel, Theory Forge Ventures, Tribe Capital, Y Combinator, Andrew Steinwold, Azeem Azhar, Balaji Srinivasan, Ben Tossell, Kulveer Taggar, Kyle Vogt, Mathilde Collin, Paul Graham, Paul Stahura, Siqi Chen, Thijn Lamers
Sep 1, 2025	Rainforest	$29.0M Series B	—	Accel, CRV, Heavybit, Infinity Ventures, Matrix, TenOneTen Ventures, Uncork Capital, Chris McKillop, George Kurtz
Sep 1, 2025	Evolve Platform	$1.0M Seed	—	Altair Capital Management, Alumni Ventures, Amino Capital, Array Ventures, Ascend Vietnam Ventures, B Capital Group, Brainstorm Ventures, Canvas Ventures, Chapter One Ventures, Climate Capital, Dreamers VC, f7 Ventures, Foundation Capital, FreeSky Capital, Frontier Ventures, Gaingels, Ideas & Capital, Infinite Niches, LombardStreet Ventures, Long Journey Ventures, Mindset Ventures, Modern Venture Partners, Peak State Ventures, Plug & Play Ventures, Safar Partners, Sequoia Capital, UpHonest Capital, Virginia Venture Partners, Adam D'Angelo, Christopher Nguyen, Clark Landry, Eric Bunting, Faizan Khan (Unchained Capital), Gokul Rajaram, Jed Ng, Jeff Morris, Kintan Brahmbhatt, Marat Kichikov, Sahin Boydas, Scott Banister, Siqi Chen, Sue Xu
Aug 1, 2025	Protege	$25.0M Series A	—	Kevin Hartz, CRV, Energize Ventures, Footwork, Gradient Ventures, Greylock, InterWest, Stellar Capital, Techstars, Adam D'Angelo, Akshay Kothari, Allison Pickens (Allison Pickens Ventures), Dylan Field, Ed Baker, Julia Hartz, Scott Belsky, Travis May
Jul 1, 2025	Knox	$7.0M Seed	—	Accel, Coatue, Felicis Ventures, Lightspeed India Partners, Shailendra Singh, Preston-Werner Ventures, Todd and Rahul's Angel Fund, Y Combinator, Augusto Marietti, Ben Tossell, Christopher Golda, Kevin Weil, Scott Belsky
Jul 1, 2025	Felt	$15.0M Venture Round	—	Kevin Hartz, AirAngels, Alt Capital, Astanor Ventures, Blackbird Ventures Australia, Energize Ventures, Footwork, Forerunner Ventures, Gradient Ventures, Greylock, InterWest, Lightspeed Venture Partners, Rainfall Ventures, Techstars, Twelve Below, Akshay Kothari, Allison Pickens (Allison Pickens Ventures), Dylan Field, Ed Baker, Julia Hartz, Scott Belsky
Jul 1, 2025	Lovable	$200.0M Series A	—	Accel, byFounders, Creandum, CRV, Heavybit, Hummingbird Ventures, La Famiglia, Operator Collective, Pareto Holdings, RTP Global, TenOneTen Ventures, Uncork Capital, Adam D'Angelo, Ben Tossell, Charlie Songhurst, Chris McKillop, Christian Reber, Dharmesh Shah, Fredrik Hjelm, George Kurtz, Job Van Der Voort, Melissa Tan, Robert Muñoz, Stefan Lindeberg, Stewart Butterfield
Jul 1, 2025	Helical Fusion	$16.0M Series A	—	Altair Capital Management, Alumni Ventures, Amino Capital, Array Ventures, Ascend Vietnam Ventures, B Capital Group, Brainstorm Ventures, Canvas Ventures, Chapter One Ventures, Climate Capital, Dreamers VC, f7 Ventures, Foundation Capital, FreeSky Capital, Frontier Ventures, Gaingels, Ideas & Capital, Infinite Niches, LombardStreet Ventures, Long Journey Ventures, Mindset Ventures, Modern Venture Partners, Peak State Ventures, Plug & Play Ventures, Safar Partners, Sequoia Capital, UpHonest Capital, Virginia Venture Partners, Adam D'Angelo, Christopher Nguyen, Clark Landry, Eric Bunting, Faizan Khan (Unchained Capital), Gokul Rajaram, Jed Ng, Jeff Morris, Kintan Brahmbhatt, Marat Kichikov, Sahin Boydas, Scott Banister, Siqi Chen, Sue Xu
Jul 1, 2025	ZeroEntropy	$4.0M Seed	—	Day One Ventures, DST Global, Emergence Capital, Felicis Ventures, Friends & Family Capital, Global Founders Capital, Greenoaks Capital, Initialized Capital, Matrix, Otherwise Fund, Pioneer Fund, Runa Capital, Spark Capital, Summit Partners, SV Angel, Theory Forge Ventures, XFactor Ventures, Y Combinator, Aayush Phumbhra, Azeem Azhar, Ben Tossell, Chris Smoak, Klaus von Sayn-Wittgenstein, Krishna Mehra, Kulveer Taggar, Mathilde Collin, Paul Graham, Paul Stahura, Siqi Chen, Thijn Lamers
Jul 1, 2025	Heron Data	$17.0M Series A	—	Alumni Ventures, Andreessen Horowitz, Axiom Partners, BoxGroup, Ali Tamaseb, G2VP, Insight Partners, Project A, Tribe Capital, Valar Ventures, Y Combinator, Gokul Rajaram, Jeremy Yap, Keri Gohman, Sahin Boydas, Shivaas Gulati, Tom Blomfield
Jun 1, 2025	Laurel	$80.0M Series C	—	5Y Capital, ACME Capital, Alumni Ventures, General Catalyst, Granite Asia, Frederique Dame, GV, Infinite Capital, IVP, Monozukuri Ventures, Hans Tung, Notable Capital, Paradigm, Pareto Holdings, Runa Capital, S28 Capital, Seven Seven Six, Slow Ventures, Soma Capital, Summit Partners, The General Partnership, The House Fund, Tribe Capital, Ulu Ventures, Workday Ventures, Zeev Capital, Arash Ferdowsi, Casey Neistat, Ding Zhou, Gokul Rajaram, Kevin Weil, Marc Benioff, Ravi Grover, Shay Banon, Tom Blomfield
Jun 1, 2025	Glean	$150.0M Series F	—	Kevin Hartz, Addition, Amplify Partners, Andreessen Horowitz, Banana Capital, Battery Ventures, BITKRAFT Ventures, CapitalG, Cedar Capital Group, Coatue, Convective Capital, Coughdrop Capital, CRV, Daft Capital, Day One Ventures, DST Global, Emergence Capital, Felicis Ventures, FirstMark Capital, Founders Fund, Friends & Family Capital, General Catalyst, Global Founders Capital, Goat Capital, Greenoaks Capital, Greylock, Dave Munichiello, Infinite Niches, In-Q-Tel, Insight Partners, Invariantes Fund, IVP, Jetstream, Kleiner Perkins, Lightspeed Venture Partners, Mantis VC, Matrix, MS&AD Ventures, Otherwise Fund, Pareto Holdings, Pioneer Fund, QBE Ventures, Ride Ventures, Salesforce Ventures, Sand Hill Angels, Sapphire Ventures, Sequoia Capital, Singular, Snowflake Ventures, Spark Capital, Summit Partners, SV Angel, Telescope Partners, The Hit Forge, Theory Forge Ventures, Thirty Five Ventures, Todd and Rahul's Angel Fund, Tribe Capital, Wellington Management, Y Combinator, YOBE Ventures, Andre Iguodala, Azeem Azhar, Ben Tossell, Bradley Horowitz, Brandon Philips, Jonathan Swanson, Joshua Reeves, Joshua Webster, Kulveer Taggar, Mathilde Collin, Paul Graham, Paul Stahura, Ryan Shea, Sahin Boydas, Scott Belsky, Siqi Chen, Suhail Doshi, Thijn Lamers
Jun 1, 2025	Harmony (tryharmony.ai)	$2.0M Seed	—	Alt Capital, Browder Capital, Day One Ventures, DST Global, Emergence Capital, Felicis Ventures, Founders Fund, Friends & Family Capital, FTX Ventures, Global Founders Capital, Greenoaks Capital, Matrix, Meritech Capital Partners, Mischief Venture Capital, Otherwise Fund, Redpoint Ventures, Saga, Spark Capital, Summit Partners, SV Angel, TCV, The Hit Forge, Theory Forge Ventures, Y Combinator, Azeem Azhar, Ben Tossell, Christina Cacioppo, Dharmesh Shah, Dylan Field, Fidji Simo, Immad Akhund, Jason Lemkin, Jonathan Neman, Joshua Reeves, Julian Shapiro, Justin Mateen, Kulveer Taggar, Mathilde Collin, Max Mullen, Parker Conrad, Paul Graham, Paul Stahura, Scott Belsky, Sean Rad, Siqi Chen, Thijn Lamers

Financial History

Total Raised

N/A

Valuation

N/A

Leadership Team

Key people at Flex Capital.

Leadership Team

Key people at Flex Capital.

Deep Dive

High-Level Overview

Flex Capital is a $200 million early-stage venture capital firm led by founder-CEOs that invests in bold technical teams with big visions pushing the boundaries of what is technically possible. Their mission is to back world-class founders at the seed stage and support them through future rounds, emphasizing founder-friendly terms such as pledging voting shares back to founders and minimizing legal burdens. They invest broadly across sectors as generalists but focus on technically ambitious startups. Flex Capital provides not only capital but also operational support, introductions to customers, strategic angels, and top-tier investors, positioning themselves as deeply invested partners in their portfolio companies’ success[2][5].

Origin Story

Founded by experienced entrepreneurs who have built companies like LiveRamp, Brightroll, Lemonaid Health, SafeGraph, and Pipedream, Flex Capital was created to be a venture fund by founders for founders. Their approach emerged from firsthand founder experience, aiming to offer more empathetic, founder-aligned support than traditional VC firms. The fund has grown to $200 million, with a significant portion reserved for follow-on investments, reflecting a commitment to long-term partnership. Their quick decision-making process (under a week) and hands-on involvement have helped them build trust and early traction with startups[2].

Core Differentiators

Founder-Led Investment Model: Founded and led by former CEOs, Flex Capital understands founder challenges deeply and aligns incentives by pledging voting shares back to founders.
Operational Support: Beyond capital, they provide hands-on help including customer introductions, recruiting executive talent, and strategic advice.
Speed and Simplicity: Decisions are made in under a week, minimizing delays and legal complexities for startups.
Generalist with Technical Focus: While sector-agnostic, they prioritize bold technical innovation and visionary founders.
Follow-On Capital: A significant portion of their $200M fund is reserved for future rounds, ensuring sustained support.

Role in the Broader Tech Landscape

Flex Capital rides the trend of founder-centric venture capital that emphasizes empathy, operational partnership, and long-term support rather than transactional funding. This approach is timely as startups increasingly seek investors who add strategic value and reduce bureaucratic friction. The firm’s focus on bold technical innovation aligns with the growing demand for breakthrough technologies across industries. By supporting early-stage founders with deep operational experience and network access, Flex Capital influences the ecosystem by helping startups scale efficiently and attract further investment.

Quick Take & Future Outlook

Looking ahead, Flex Capital is well-positioned to continue expanding its influence by doubling down on founder-friendly practices and technical innovation. As technology sectors evolve rapidly, their model of combining founder empathy with strategic insight will likely attract more visionary entrepreneurs. Their reserved capital for follow-ons suggests a commitment to nurturing companies through multiple growth phases, potentially increasing their impact on the startup ecosystem. Flex Capital’s blend of operational expertise and founder alignment may set a new standard for early-stage venture investing.

This founder-led, founder-focused approach ties back to their core mission of investing in bold technical teams and supporting them as true entrepreneurial partners.

Sources

High-Level Overview

Origin Story

Core Differentiators

Founder-Led Investment Model: Founded and led by former CEOs, Flex Capital understands founder challenges deeply and aligns incentives by pledging voting shares back to founders.
Operational Support: Beyond capital, they provide hands-on help including customer introductions, recruiting executive talent, and strategic advice.
Speed and Simplicity: Decisions are made in under a week, minimizing delays and legal complexities for startups.
Generalist with Technical Focus: While sector-agnostic, they prioritize bold technical innovation and visionary founders.
Follow-On Capital: A significant portion of their $200M fund is reserved for future rounds, ensuring sustained support.

Role in the Broader Tech Landscape

Quick Take & Future Outlook

This founder-led, founder-focused approach ties back to their core mission of investing in bold technical teams and supporting them as true entrepreneurial partners.