48 Seed Cybersecurity investors
As of October 25, 2026, DryPowder lists 48 seed Cybersecurity venture funds. Their median published check range is $500K–$5M (25 of 48 funds publish one). 1 has filed an SEC Form D in the last 90 days: Squared Circle (Oct 8, 2026).
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Which Seed Cybersecurity funds are writing checks right now?
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- funds listed
- 48
- median check (25 of 48 publish one)
- $500K–$5M
- filed an SEC Form D in the last 90 days
- 1
- last updated, 2026
- Oct 25
Filed a Form D in the last 90 days
- $100M offeringFORM D
All 48 Seed Cybersecurity funds
- South Park CommonsSan Francisco$250K–$1MSeedPre-Seed
South Park Commons helps talented technologists and founders turn 'illegible into the inevitable' by providing a home for figuring out what's next,…
2 partners listed - BOLDstart VenturesSan Francisco$250K–$5MSeedSeries A
Partner with bold technical founders from inception, before product or first check, backing AI-native infrastructure, security, apps, and models to…
1 partner listed - Primary Venture PartnersSan Francisco$250K–$2MSeed
We back founders building things the world hasn't seen yet, at the moment before the world believes. We are a specialized and scaled seed fund…
9 partners listed - Amplify PartnersSan Francisco$500K–$3MSeedSeries A
Amplify invests in technical founders building the next generation of applications, models, tools, and infrastructure. For almost 15 years they have…
2 partners listed - HeavybitSan Francisco$500K–$5MSeed
Heavybit invests from Day 0 with high conviction in unique, transformative technical startups that build enterprise infrastructure, providing…
Partners not yet listed - SignalFireSan Francisco$500K–$5MSeedSeries ASeries B
SignalFire is a VC firm built like a tech company that combines AI tools, data infrastructure, and deep sector expertise with portfolio support to…
Partners not yet listed - OverlineAtlanta$250K–$1.5MSeedPre-SeedSeries A
Invest from inception through seed in founders building across the Southeast, providing first checks before the deck is polished and before anyone…
Partners not yet listed - Pioneer FundSan Francisco$250K–$2MSeed
A fund of 500+ Y Combinator alumni investing in and supporting top startups from Y Combinator, the world's top accelerator.
Partners not yet listed - Menlo VenturesMenlo Park$500K–$5MSeedSeries ASeries BGrowth
Menlo Ventures backs transformative technology companies at the intersection of AI, healthcare, and consumer by being operationally invested—doing…
Partners not yet listed - Notion CapitalLondon$500K–$5MSeedSeries ASeries B
Europe's leading early-stage business software investor, backing founders on the journey from $1M to $100M+ in revenue with deep software expertise…
Partners not yet listed - $250K–$1.5MSeedPre-Seed
Panache Ventures backs visionary founders from day one with conviction and courage, providing hands-on support from pre-seed through Series A with…
Partners not yet listed - $125K–$625KSeedSeries A
We support visionary founders across Europe as they build the next generation of B2B software companies. We invest early in B2B software companies…
Partners not yet listed - $500K–$1.5MSeed
Investing in transformative early-stage cybersecurity startups with deep domain expertise, extensive partner networks, and a platform approach to…
Partners not yet listed - Cowboy VenturesSan Francisco$250K–$2MSeedPre-Seed
Seed-stage fund that helps founders build generational companies by providing connections, experience, hands-on support, and human-centered…
8 partners listed - $1M–$5MSeed
Invest early in foundational deep tech that solves the world's toughest problems across defence, space, quantum computing, AI/cybersecurity, and…
2 partners listed - AccompliceBoston$250K–$2MSeedGrowth
High conviction, concentrated, patient investors operating as a venture firm and contemporary family office. Believers in the federated VC model…
Partners not yet listed - $250K–$2MSeedSeries A
We back gritty, early, conviction-driven founders building the next generation of enterprise, SaaS, and infrastructure software. We believe GTM is…
Partners not yet listed - $100K–$2MSeedPre-SeedSeries A
We partner at the earliest stages with founders building the future of the Internet across crypto, AI, and other frontier technologies.
Partners not yet listed - SeedFORM D
Funding the next generation of cyber defense at the earliest stage, alongside founders and managers who define the category.
1 partner listed - Vertex VenturesSan Francisco$500K–$10MSeedSeries A
We are founders and operators who partner with early-stage founders building infrastructure and SaaS companies, leveraging our experience to help…
6 partners listed - Sequoia CapitalSan Francisco$500K–$50MSeedSeries ASeries BSeries CGrowth
Help the daring build legendary companies through capital, expertise, and network.
18 partners listed - Argon VenturesSan FranciscoSeedPre-Seed
Pre-seed venture fund leading investments in Intelligent Industry Solutions, focused on AI-led innovation that delivers radical productivity,…
2 partners listed - Jump CapitalChicagoSeedSeries A
Jump Capital backs early-stage founders chasing the leapfrog moments AI is creating across industries. The fund positions itself as an active…
12 partners listed - 645 VenturesNew York and San Francisco$1M–$15MSeedSeries AGrowth
645 Ventures invests in exceptional founders with purity of motivation, earned secrets, and non-consensus thinking who defy convention to change the…
Partners not yet listed - Glasswing VenturesBoston$4M–$15MSeedSeries A
Glasswing invests in visionary, early-stage founders using AI and frontier technology to reinvent enterprise and security markets. They go first and…
Partners not yet listed - Balderton CapitalLondon$1M–$20MSeedSeries ASeries B
Build world-changing businesses with Europe's best founders over two decades. Support founders as complete people, not just CEOs, through deliberate…
Partners not yet listed - Hoxton VenturesLondonSeed
European venture with Silicon Valley mindset; deliberately anti-thematic, backing founders building in non-obvious market categories early with focus…
Partners not yet listed - Wing Venture CapitalPalo AltoSeedSeries ASeries B
Wing is an early-stage investor and long-term company builder equipping founders with resources and unwavering partnership to build products that…
Partners not yet listed - Mayfield FundSan FranciscoSeedSeries A
First institutional investor for early-stage AI founders, with 70% of investments beginning at inception. People-first approach to building…
Partners not yet listed - $1M–$100MSeedSeries ASeries BGrowth
Invests in companies using technology to solve important problems in healthcare, artificial intelligence, cybersecurity, agriculture, transportation,…
17 partners listed - Greylock PartnersSan FranciscoSeedPre-SeedSeries A
First-check investor (pre-seed, seed, series A) deeply focused on AI-first companies. Partners selectively, cares deeply, and strives for excellence…
Partners not yet listed - $500K–$15MSeed
We back bold companies across sectors. What unites them isn't industry — it's a clear thesis for technological transformation, and founders we…
3 partners listed - SeedSeries ASeries B
Multi-strategy tech investment platform backing Europe's next leaders in Digital and Green transformation, providing Seed to Series B investments…
Partners not yet listed - SeedGrowth
Early-stage venture capital fund backing the best tech entrepreneurs across Europe and the US, investing in technology companies that enable or…
Partners not yet listed - SeedSeries A
Early stage, global investors backing ambitious founders from inception through seed with high-conviction investments in foundational technology,…
Partners not yet listed - SeedSeries ASeries B
Rally Ventures invests exclusively in early-stage business technology at the epicenter of B2B transformation, focusing on AI/ML, cybersecurity,…
Partners not yet listed - SeedSeries ASeries B
Icon Ventures applies 22 years of proven venture capital expertise to foundational AI companies across Seed through Series B, focusing on creating…
Partners not yet listed - SeedSeries A
Day one partner for industry-defining cybersecurity companies. Cyberstarts founders build transformational, enduring cybersecurity companies.
Partners not yet listed - SeedSeries ASeries BSeries C
Bringing visions of entrepreneurs and innovators to life through venture capital investment.
Partners not yet listed - DaphniParisSeedSeries ASeries BGrowth
Daphni backs visionary entrepreneurs with deep conviction, supporting startups where vision meets conviction across diverse sectors.
Partners not yet listed - Bain Capital VenturesSan FranciscoSeedSeries ASeries BGrowth
Use tightly focused expertise and an unparalleled global network to help founders realize their potential across all stages, from incubation to…
Partners not yet listed - Newfund CapitalSilicon ValleySeed
Invest in exceptional entrepreneurs building companies that are good for people and the planet, with a focus on early-stage startups in Silicon…
Partners not yet listed - SeedPre-SeedSeries A
Back engineers and researchers surfing new computing waves (robotics, genomics/CRISPR, GenAI) as they transform massive industries. Computing keeps…
Partners not yet listed - SeedSeries ASeries B
Early-stage companies need more than capital—they need partners with deep domain expertise and conviction to help them build functional, thriving…
Partners not yet listed - Seed
Early believers in technical founders. We invest in essential software used by engineering and security teams to build and protect our digital world.
Partners not yet listed - Seed
F2 partners with bold Israeli founders to build iconic companies from 0 to 1, offering trust, boldness, and efficiency through early-stage venture…
Partners not yet listed - SeedSeries ASeries BSeries C
Straightforward honesty is the best support a VC can bring to enable founders to react faster and execute with relentless focus.
Partners not yet listed - Opus CapitalPalo AltoSeed
Early-stage funding of technology companies leveraging deep operating experience from market-leading tech companies. Focus on committed entrepreneurs…
Partners not yet listed
How this list is built
DryPowder lists every fund with a public profile tagged Seed and Cybersecurity. Funds whose largest published check is $5M or less come first; inside each group, funds with a verified SEC Form D in the last 30 days lead, then profile quality decides. Form D dates come from SEC EDGAR, and SPV and single-deal filings are dropped. Check sizes are what each fund publishes; the median uses only the 25 funds that publish one.
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Frequently asked questions
How many Seed Cybersecurity VCs are there?
As of October 25, 2026, DryPowder lists 48 seed Cybersecurity venture funds with a public profile. The first 5 on this page are South Park Commons, BOLDstart Ventures, Primary Venture Partners, Amplify Partners and Heavybit.
Which Seed Cybersecurity VCs are actively investing right now?
1 of the 48 filed a verified SEC Form D in the last 90 days, a sign of a new fund being raised: Squared Circle (Oct 8, 2026). Each filing links to its record on SEC EDGAR.
What check size do Seed Cybersecurity VCs write?
The median published range is $500K–$5M, across the 25 of 48 funds that publish a check size. Published checks on this list run from $100K to $100M.
Where are Seed Cybersecurity VCs based?
Of the 48 seed Cybersecurity venture funds, 14 are in San Francisco, 3 are in London, 2 are in Boston and 2 are in Palo Alto. The rest are elsewhere or have no headquarters city on file.
How does DryPowder build this list?
A fund is listed when its public profile is tagged Seed and Cybersecurity. Funds whose largest published check is $5M or less come first; within each group, funds that filed a Form D in the last 30 days lead, then profile quality decides. Form D dates come from SEC EDGAR, with SPVs excluded. Data as of October 25, 2026.
Sources
- SEC EDGAR: Form D, Squared Circle ($100M offering), filed
- Website: South Park Commons website
- Website: BOLDstart Ventures website
- Website: Primary Venture Partners website
- Website: Amplify Partners website
- Website: Heavybit website
- Website: SignalFire website
- Website: Overline website
- Website: Pioneer Fund website
- Method: How DryPowder builds its data
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