Keystone Fund — Pre-Seed VC Firm ($250K–$2.0M Checks)
Keystone Fund is a Pre-Seed venture capital firm based in Tallinn, Estonia investing in Other, Healthcare, Real Estate. The firm typically writes $250K–$2.0M checks and has 9 portfolio companies in our records.
- Check size
- $250K–$2.0M
- Portfolio
- 9 companies on record
- Partners
- 1 listed
- Stage
- Pre-Seed
- Sectors
- Other, Healthcare, Real Estate, AI / ML
- HQ
- Tallinn, Estonia
- AUM
- Not in our records
Last verified: 2026-09-28
Pre-Seed
$250K – $2.0M
9+ companies
1 partner
Investment Thesis
Keystone Fund focuses on early-stage investments in blockchain-based RegTech and identity management solutions leveraging decentralized protocols.
How Keystone Fund invests
Keystone Fund is a vc firm based in Tallinn, Estonia. The firm invests at the Pre-Seed stage, with a focus on Other, Healthcare, Real Estate, AI / ML. It does not invest in Consumer Tech.
Keystone Fund typically writes checks of $250K–$2.0M per investment.
Keystone Fund has backed 9 companies in our records, including MERGE, BarkleyOKRP, Cherry Hill Programs.
Partners & Team
Juhan Paabo
GP
Industry Focus
Invests In
Does Not Invest In
Portfolio Companies (9)
Other
MERGE
Operating-company investment by Keystone Capital.
BarkleyOKRP
Operating-company investment by Keystone Capital.
Cherry Hill Programs
Operating-company investment by Keystone Capital.
Foundation Dental Partners
Operating-company investment by Keystone Capital.
Pinchin
Operating-company investment by Keystone Capital.
Onset Financial, Inc.
Debt/credit position by Keystone Private Income Fund.
AE Green Mountain, LLC
Debt/credit position by Keystone Private Income Fund.
Phygital Digital Global FX LLC
Debt/credit position by Keystone Private Income Fund.
Zoe Lakeview, LLC
Debt/credit position by Keystone Private Income Fund.
- •Raising at Pre-Seed? You're squarely in their sweet spot.
- •Lead with your fit in Other, Healthcare, Real Estate — 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 Juhan Paabo, GP.
- •A warm introduction beats a cold email. Get matched and request an intro.
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