Pre-Seed Companies in South San Francisco

Explore 4 pre-seed startups based in South San Francisco, United States. Access verified founder contact information and fundraising data.

Total Companies

Total Funding

$7.3M

Avg Funding

$1.8M

Industries

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Playad.ai

Advertising

$5.4M

raised

Playad.ai develops an AI-native marketing platform for multi-agent ad workflows and interactive ad creatives.

Jan 2026

Pre-Seed

Founder Contacts

[email protected]

41,000+ verified contacts

Velorum Therapeutics

Biotechnology

$500K

raised

Velorum Therapeutics produces powerful cancer treatments that starve tumors.

Feb 2024

Pre-Seed

Founder Contacts

[email protected]

41,000+ verified contacts

OmniVis

AgTech

$100K

raised

Put the power of the lab in the palm of your hand

Apr 2023

Pre-Seed

Founder Contacts

[email protected]

41,000+ verified contacts

Woosh Air

Consumer Software

$1.3M

raised

Woosh is a tech company that focuses on the development of innovative air filtration products.

Apr 2022

Pre-Seed

Founder Contacts

[email protected]

41,000+ verified contacts

Pre-Seed in Other Cities

San Francisco5,994 companies New York4,787 companies London4,463 companies Singapore1,586 companies Paris1,532 companies Los Angeles1,355 companies Austin1,014 companies Toronto1,011 companies

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Other Funding Stages in South San Francisco

Seed23,619 companies Venture - Series Unknown10,588 companies Series A9,487 companies Grant4,956 companies Series B4,086 companies Debt Financing3,519 companies

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