Catalyst Bioventures — Pre-Seed & Seed VC Firm ($300K–$1.5M Checks)
Catalyst Bioventures is a Pre-Seed, Seed venture capital firm based in Boston, MA investing in Healthcare, AI / ML, Other. The firm typically writes $300K–$1.5M checks and has 3 portfolio companies in our records.
- Check size
- $300K–$1.5M
- Portfolio
- 3 companies on record
- Partners
- 1 listed
- Stage
- Pre-Seed, Seed
- Sectors
- Healthcare, AI / ML, Other, SaaS
- HQ
- Boston, MA
- AUM
- Not in our records
Last verified: 2026-09-03
Pre-Seed, Seed
$300K – $1.5M
3+ companies
1 partner
Investment Thesis
Investing in breakthrough biotechnologies that enhance health and sustainability.
How Catalyst Bioventures invests
Catalyst Bioventures is a vc firm based in Boston, MA. The firm invests at the Pre-Seed, Seed stages, with a focus on Healthcare, AI / ML, Other, SaaS. It does not invest in Software, Media.
Catalyst Bioventures typically writes checks of $300K–$1.5M per investment.
Catalyst Bioventures has backed 3 companies in our records, including Catalyst Biosciences, Catalyst Pharmaceuticals, Catalyst Investors VI, L.P..
Partners & Team
John Miller
Managing Partner
Industry Focus
Invests In
Does Not Invest In
Portfolio Companies (3)
Other
Catalyst Biosciences
A biotechnology company focused on developing protease therapeutics.
Catalyst Pharmaceuticals
A biopharmaceutical company focused on developing and commercializing therapies for rare neuromuscular and neurological diseases.
Catalyst Investors VI, L.P.
A private equity fund focused on growth-stage investments.
- •Raising at Pre-Seed, Seed? You're squarely in their sweet spot.
- •Lead with your fit in Healthcare, AI / ML, Other — the sectors they actively back.
- •Size your ask to their typical $300K – $1.5M check.
- •cold outreach ok
- •Address your outreach to a specific partner, such as John Miller, Managing Partner.
- •A warm introduction beats a cold email. Get matched and request an intro.
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