Castor Ventures
Castor Ventures is a Seed venture capital firm based in Boston, MA investing in SaaS, Other, Enterprise. The firm typically writes $250K–$2.0M checks and has 73 portfolio companies in our records.
- Check size
- $250K–$2.0M
- Portfolio
- 73 companies on record
- Partners
- 11 listed
- Stage
- Seed
- Sectors
- SaaS, Other, Enterprise
- HQ
- Boston, MA
- AUM
- Not in our records
Last verified: 2026-05-28
Seed
$250K – $2.0M
73+ companies
11 partners
Investment Thesis
Focused on B2B SaaS and technology-enabled solutions driving efficiency for sales and marketing teams.
How Castor Ventures invests
Castor Ventures is a vc firm based in Boston, MA. The firm invests at the Seed stage, with a focus on SaaS, Other, Enterprise. It does not invest in Consumer, Media.
Castor Ventures typically writes checks of $250K–$2.0M per investment.
Castor Ventures has backed 73 companies in our records, including AirOps, Atmoslabs, Axoft.
Partners & Team
Industry Focus
Invests In
Does Not Invest In
Portfolio Companies (73)
Other
AirOps
Atmoslabs
Axoft
Ayar Labs
Bit Fry Game Studios
BlockFi
Bloomfilter
Boldin
Brio Systems
Briq
- •Raising at Seed? You're squarely in their sweet spot.
- •Lead with your fit in SaaS, Other, Enterprise — 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 David Beazley, Managing Partner.
- •A warm introduction beats a cold email. Get matched and request an intro.
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