RE

RebelBio — Pre-Seed & Seed VC Firm ($250K–$2.0M Checks)

VC
San Francisco, CA

RebelBio is a Pre-Seed, Seed venture capital firm based in San Francisco, CA investing in Other, Healthcare. The firm typically writes $250K–$2.0M checks and has 1 portfolio company in our records.

Check size
$250K–$2.0M
Portfolio
1 company on record
Partners
1 listed
Stage
Pre-Seed, Seed
Sectors
Other, Healthcare
HQ
San Francisco, CA
AUM
Not in our records

Last verified: 2026-08-30

How to approach: warm intro preferred
Stage

Pre-Seed, Seed

Check Size

$250K – $2.0M

Portfolio

1+ companies

Team

1 partner

Investor activity
Investments in last 12 months: 0

Investment Thesis

Supports biotech startups that leverage biology-driven innovations like microbiome sequencing and diagnostics.

How RebelBio invests

RebelBio is a vc firm based in San Francisco, CA. The firm invests at the Pre-Seed, Seed stages, with a focus on Other, Healthcare.

RebelBio typically writes checks of $250K–$2.0M per investment.

RebelBio has backed 1 company in our records, including Biomesense.

Partners & Team

AT

Alex Twingly

Managing Director

Biotech
Microbiome
Diagnostics

Industry Focus

Invests In

Other
Healthcare

Portfolio Companies (1)

Other

BI

Biomesense

Microbiome diagnostics
How to pitch RebelBio
  • •Raising at Pre-Seed, Seed? You're squarely in their sweet spot.
  • •Lead with your fit in Other, Healthcare — the sectors they actively back.
  • •Size your ask to their typical $250K – $2.0M check.
  • •warm intro preferred
  • •Address your outreach to a specific partner, such as Alex Twingly, Managing Director.
  • •A warm introduction beats a cold email. Get matched and request an intro.

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