SUM Ventures
Early-stage VC investing from pre-seed to seed+ in fintech, proptech, IoT, AI, medtech, and cleantech startups across the US.
Summit Partners
Global growth-equity firm since 1984 pairing proprietary sourcing with hands-on operational support for tech, healthcare and growth-sector leaders.
Sunflower Capital
Pre-seed and seed firm led by Sequoia alum Liu Jiang, backing the earliest-stage founders building enterprise infrastructure, AI, developer tools, and defense hardware.
Superangel
Solo-GP pre-seed and seed fund led by Ben Zises writing first checks into Consumer, PropTech, and Future of Work companies. US-focused with 125+ portfolio companies.
Surface Ventures
Pre-seed and seed fund focused on B2B software at low valuations
Susa Ventures
Seed-stage fund helping founders build billion-dollar companies
Susquehanna Sustainable Investments
Climate-focused early-stage fund backed by Susquehanna International Group, investing in mitigation, adaptation, and removal startups
Sutter Hill Ventures
Venture firm partnering with founders to build enduring companies
SV Angel
Investing long-term in founders to create impact beyond business
SVCI
Angel syndicate of 70+ practicing CISOs who personally back early cybersecurity startups, operating independently but powered by Notable Capital.
Swell VC
Pre-seed and seed VC backing founders rebuilding critical infrastructure with AI across enterprise, space, defense, biotech, industrial, and commerce. NYC-based, operator-led.
Swift Ventures
San Francisco-based early-stage VC led by former founders, investing in AI and automation companies with B2B business models from pre-seed through Series A.
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Get the Complete SaaS Investor Database →Swisscom Ventures
Corporate VC advising Swisscom's investment funds, specializing in Swiss university spin-offs from seed through Series C with an 18-year track record and 45 exits.
SYN Ventures
Cybersecurity-focused venture firm backing early growth companies
TA Associates
Boston-founded (1968) growth-equity firm sourcing deals via direct outreach, taking minority or majority stakes in profitable, high-growth companies.
Taihill Venture
Early-stage VC investing in tech startups
Taiwania Capital
Taiwan's National Development Fund-backed VC investing in AI, semiconductors, robotics, cybersecurity, biotech, and MedTech across global markets.
Tandem Venture Partners
Utah-based venture capital firm investing from pre-seed to Series B+, founded by a former unicorn startup founder to back emerging founders.
Tapestry VC
Seed-stage VC backing repeat founders across the US and Europe. Sector-agnostic; portfolio spans consumer tech, cybersecurity, fintech, SaaS, and robotics.
TAU Ventures
Palo Alto early-stage VC backing AI-driven companies in healthcare, enterprise software, and automation, from pre-seed to growth.
Taurus Ventures
Investing in people and technologies across USA and Asia
TCV
Growth-stage technology investor backing consumer internet, SaaS, fintech, and marketplace companies from Series B through IPO.
TDF Ventures
Early-stage VC firm investing a $150M permanent capital pool in enterprise infrastructure, software, and services startups (IaaS, SaaS, XaaS).
TDK Ventures
Global, founder-first corporate venture capital investing in deeptech and sustainability
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