
Lifeline Ventures is a Helsinki-based, sector-agnostic early-stage venture capital firm founded by serial entrepreneurs in 2009. The firm partners closely with resilient founders from the very beginning of their journey, investing at pre-seed and seed stages across technology sectors.
Deal activity increased 33% year-over-year (8 deals in the last 12 months). Their most common stage is seed (40% of deals). Average disclosed round size is $20.5M (across 49 rounds with reported amounts).
Portfolio
87
Fund Size
$470M
Top Stage
Seed
Last 12 Mo
9
Team
Teemu Mattila
PARTNER
Laura Hyry
FINANCE MANAGER
Sonja Seppälä
ADMIN AND OPERATIONS MANAGER
Tessa Tamminen
OPERATIONS
Portfolio Breakdown
Stage Distribution
Sector Distribution
Investment Activity
DealsAvg Round Size
Portfolio
108 investments
| Company | Round | Amount | Date |
|---|---|---|---|
| Series A | $14M | Jul 2026 | |
| Unknown | $117M | Apr 2026 | |
| Seed | $2.7M | Mar 2026 | |
| Series A | — | Mar 2026 | |
| Series A | $31M | Feb 2026 | |
| Series A | $31M | Feb 2026 | |
| Pre-Seed | — | Jan 2026 | |
| Series E | — | Dec 2025 | |
| TTime Atlas Labs | Seed | — | Sep 2025 |
| SSteady Energy | Growth | — | Jul 2025 |
| Series A | — | May 2025 | |
| TTILT Biotherapeutics | Series B | $25.6M | May 2025 |
| Unknown | $25.6M | May 2025 | |
| Seed | — | Jan 2025 | |
| Pre-Seed | $1.5M | Jan 2025 | |
| IIn Parallel | Seed | — | Nov 2024 |
| Seed | — | Oct 2024 | |
| Unknown | — | Oct 2024 | |
| Seed | — | Jan 2024 | |
| SSooma | Growth | — | Jan 2024 |
| Unknown | — | Jan 2024 | |
| Seed | — | Jan 2024 | |
| Seed | — | Sep 2023 | |
| MMeasurlabs | Seed | — | Sep 2023 |
| Seed | — | Sep 2023 |
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Top Co-Investors
Tesi18 shared
Business Finland7 shared
True Ventures6 shared
Joint Effects5 shared
Maki.vc4 shared
EQT Ventures4 shared
Earlybird Venture Capital4 shared
Reinventure Group4 shared
Wave Capital4 shared
High-Tech Gründerfonds4 shared
Foxconn3 shared
Draper Associates3 shared
VentureFriends3 shared
Morrow Ventures3 shared
Balderton Capital3 shared
Sunstone Partners3 shared
Voima Ventures3 shared
Stephen Industries3 shared
PROfounders Capital3 shared
Last updated: 9 September 2026