S28 Capital — Seed & Series A VC Firm ($250K–$2.0M Checks)
S28 Capital is a Seed, Series A venture capital firm based in San Francisco, California investing in Enterprise, AI / ML, Developer Tools. The firm typically writes $250K–$2.0M checks and has 6 portfolio companies in our records.
- Check size
- $250K–$2.0M
- Portfolio
- 6 companies on record
- Partners
- 7 listed
- AUM
- $500M
- Stage
- Seed, Series A
- Sectors
- Enterprise, AI / ML, Developer Tools, Security
- HQ
- San Francisco, California
Last verified: 2026-11-13
Seed, Series A
$250K – $2.0M
$500M
6+ companies
7 partners
Investment Thesis
S28 is a newer software-focused fund that backs enterprise technology and data-heavy companies. It is a sensible discovery target for companies selling into operational leaders and technical buyers.
How S28 Capital invests
S28 Capital is a vc firm based in San Francisco, California. The firm invests at the Seed, Series A stages, with a focus on Enterprise, AI / ML, Developer Tools, Security.
S28 Capital typically writes checks of $250K–$2.0M per investment, backed by approximately $500M in assets under management. Our records include 3 funds raised by the firm.
S28 Capital has backed 6 companies in our records, including Plangrid, Mattermost, Reflektive.
Partners & Team
Industry Focus
Invests In
Funds
Fund III
Fund II
Fund I
Recent Activity
Raised Fund III ($150M)
2022 · fund records
Raised Fund II ($200M)
2021 · fund records
Raised Fund I ($150M)
2019 · fund records
Portfolio Companies (6)
Other
Plangrid
Construction productivity software.
Mattermost
Open-source messaging platform.
Reflektive
Performance management software.
Gravitational
Access management software.
Social Construct
Construction technology company.
Perpetua
E-commerce advertising optimization.
- •Raising at Seed, Series A? You're squarely in their sweet spot.
- •Lead with your fit in Enterprise, AI / ML, Developer Tools — the sectors they actively back.
- •Size your ask to their typical $250K – $2.0M check.
- •cold outreach ok
- •Address your outreach to a specific partner, such as Shvet Jain, General Partner.
- •A warm introduction beats a cold email. Get matched and request an intro.
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Frequently Asked Questions
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