Investor listUpdated August 1, 2026

5 Pre-Seed Infrastructure investors in San Francisco

As of August 1, 2026, DryPowder lists 5 pre-seed Infrastructure venture funds in San Francisco. Their median published check range is $625K–$1.8M (4 of 5 funds publish one). None has filed a verified SEC Form D in the last 90 days.

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Which Pre-Seed Infrastructure funds in San Francisco are writing checks right now?

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funds listed: 5
median check (4 of 5 publish one): $625K–$1.8M
filed an SEC Form D in the last 90 days: 0
last updated, 2026: Aug 1

All 5 Pre-Seed Infrastructure funds in San Francisco

Y Combinator
$500K–$2MSeedPre-Seed
YC turns builders into formidable founders by providing structured mentorship, funding, and network access during a 12-week batch program. The…
1 partner listed
South Park Commons
$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
Basecase Capital
$1M–$5MSeedPre-Seed
Write the first check to builders who are still dreaming, tinkering, and exploring what they want to create. Work with founders pre-product,…
1 partner listed
Scribble Ventures
$750K–$1.5MSeedPre-Seed
Back the world's best AI native founders at pre-seed and seed stages with product and go-to-market expertise from OpenAI, Meta, Twitter, and a16z to…
Partners not yet listed
Greylock Partners
SeedPre-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

How this list is built

DryPowder lists every fund with a public profile tagged Pre-Seed and Infrastructure and headquartered in San Francisco. 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 4 funds that publish one.

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Frequently asked questions

How many Pre-Seed Infrastructure VCs in San Francisco are there?

As of August 1, 2026, DryPowder lists 5 pre-seed Infrastructure venture funds in San Francisco with a public profile. The first 5 on this page are Y Combinator, South Park Commons, Basecase Capital, Scribble Ventures and Greylock Partners.

Which Pre-Seed Infrastructure VCs in San Francisco are actively investing right now?

None of the 5 filed a verified SEC Form D in the last 90 days. A Form D is filed when a fund starts raising; SPVs and single-deal vehicles are not counted.

What check size do Pre-Seed Infrastructure VCs in San Francisco write?

The median published range is $625K–$1.8M, across the 4 of 5 funds that publish a check size. Published checks on this list run from $250K to $5M.

How does DryPowder build this list?

A fund is listed when its public profile is tagged Pre-Seed and Infrastructure and its headquarters is San Francisco. 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 August 1, 2026.

Sources

Updated August 1, 2026