# B# > B# is IBB Ventures' dedicated pre-seed fast lane for Berlin-based DeepTech founders. We back early-stage founders with €100K–400K in convertibles, fast. B# (B Sharp) is a pre-seed fund operated by IBB Ventures, focused exclusively on DeepTech. We invest in Berlin-based founders at the pre-seed stage with a bias to action: clear process, sharp decisions, no unnecessary gatekeeping. As part of IBB Ventures, B# is backed by 30 years of investing in Berlin's startup ecosystem. ## Investment Focus - **Sectors:** DeepTech only — Digital Tech · Climate & Energy · Industrial Transformation & Sustainability · Biotech & Life Sciences - **Ticket Size:** €100K–400K in Convertibles - **Stage:** Pre-Seed - **Location:** Berlin-based founders ## Why B# Deep tech, high impact. We believe visionary deep tech founders shape the future. As a catalyst for sharp ideas and bold visions, we empower founders with capital, guidance, and network to drive lasting global impact. ## What We Look For Sharp ideas. Bold visions. Berlin-based DeepTech founders at the pre-seed stage who are ready to turn a visionary idea into a sharp venture. ## How to Apply Founders can apply for funding via our application form. Every application is reviewed by our team. - Apply: https://ibbventures.typeform.com/to/yd1GFtF5 ## About IBB Ventures B# is operated by IBB Ventures, Berlin's leading venture capital firm with 30 years of investing experience. IBB Ventures has deployed over €300M in funding, backed 310+ startups, and supported 80+ successful exits across DeepTech, Creative, and Impact sectors. - Parent fund: https://www.ibbventures.de ## Pages - [Home](https://bsharp.vc): Single-page overview of B#'s investment focus, application process, and portfolio. - [Apply for funding](https://ibbventures.typeform.com/to/yd1GFtF5): Typeform-based application for DeepTech founders. ## Legal - [Legal Notice (Impressum)](https://www.ibbventures.de/en/impressum) - [Privacy Policy](https://www.ibbventures.de/en/privacy-policy) ## Contact To connect with the B# team or discuss your DeepTech venture, apply via the form linked above. All applications are reviewed personally by our team.