Investment thesis
Active, full-stack partners helping founders turn visionary ideas into transformational businesses across AI and intelligent apps, AI-enabled biotech, consumer and marketplace, data infrastructure, developer platforms and enterprise software.
Madrona invests at Series A. Sesamers tracks 1 portfolio company across 1 round. Its most recent tracked deal: Jack & Jill, Sep 2026.
Portfolio
Past investments
| Company | Round | Role | Date | Round size |
|---|---|---|---|---|
| Jack & Jill London, United Kingdom Read the announcement → | Series A | Participant | Sep 2026 | €34.9M |