J12 is a Stockholm-based, thesis-driven venture capital firm partnering early with technical founders across Europe to build category-defining data and AI companies. While its headquarters is in Stockholm, the firm also has offices in London and Paris. It typically invests €100K–€2M at the pre-seed and seed stages.
Average disclosed round size is $8.4M (across 10 rounds with reported amounts).
Portfolio
18
Fund Size
—
Top Stage
Seed
Last 12 Mo
1
Team
Portfolio Breakdown
Stage Distribution
Sector Distribution
Investment Activity
DealsAvg Round Size
Portfolio
21 investments
| Company | Round | Amount | Date |
|---|---|---|---|
 Validio | Series A | $30M | Mar 2026 |
| CCamphouse | Series A | $17M | Jan 2026 |
 Volve | Seed | $3M | Jan 2026 |
 Ostrom | Series B | — | Jun 2025 |
 Jeff App | Seed | $2M | Jul 2024 |
 Leetify | Seed | $2.5M | Oct 2023 |
| Ostrom | Series A | — | Sep 2023 |
 Treyd | Series A | $12M | Jan 2023 |
| Treyd | Series A | $10M | Jan 2022 |
 Kovant | Seed | — | — |
 Formulate Labs | Seed | $3M | — |
 iPercept | Unknown | — | — |
| Leetify | Pre-Seed | — | — |
 Ayora | Pre-Seed | $1.6M | — |
 Mediatool | Unknown | — | — |
 Inex One | Unknown | $3M | — |
 Galdera | Pre-Seed | — | — |
 Buddywise | Seed | — | — |
 Northfork | Unknown | — | — |
| MMVision AI | Seed | — | — |
 Spaak | Pre-Seed | — | — |
Top Co-Investors
Antler4 shared
Union Square Ventures2 shared
Adjacent2 shared
SE Ventures2 shared
eEquity2 shared
Newion2 shared
private angel investors2 shared
Cencora Ventures1 shared
Menlo Ventures1 shared
Founders Fund1 shared
Startup Wise Guys1 shared
Presto Ventures1 shared
Lakestar1 shared
Plural Platform1 shared
henQ1 shared
Industrifonden1 shared
Acorn Pacific Ventures1 shared
Luminar Ventures1 shared
Luminar1 shared
RunwayFBU1 shared
Last updated: 20 October 2026