Sebastian F Eiseler

General Partner Private Equity

📍 United Kingdom🔄 Updated September 2026💼 11 investments📅 13 years investing🗓 Last invested Jan 2024
VC🌍 United Kingdom
11
Total investments
2
Early stage
4
Mid stage
2
Late stage
13y
Years active

Portfolio

8 investments · sorted by recency
All investments
Early stage
Mid stage
Late stage
Investor & Board Member
2024
Lunar X is a future-forward media company that invests in digital-first content brands to elevate them into globally loved franchises. We believe that the most successful content brands of the future will emerge not from boardrooms but from creators who are able to expand their reach and transcend their platforms, to better connect with the communities who love their work. Lunar X partners with creators by providing access to capital, entrepreneurial excellence and global networks - with the aim of delivering content and experiences that are educational, innovative and entertaining.
Investor & Senior Advisor
Jun 2021
DEX prime GmbH ist die Pionierplattform für B2B Drittsicherheiten: eine neue Ertragsquelle zur Deckung der gestiegenen Refinanzierungskosten, Sanierungskosten und CO2-Steuer für Immobiliengesellschaften sowie ein neuer Katalysator zur Schließung der Finanzierungslücke für Projektentwickler.
Investor & Board Member
2021
tink is the leading e-commerce platform for smart home hardware and services. Since the company was founded in 2016, we have helped over a million customers to create a smart and climate-friendly home. What sets us apart is that we not only offer the best hardware from renowned brands like Google, Apple, SONOS and Bosch. At tink, we provide holistic solutions for the use cases of our customers. Our team of >150 tinkies from over 25 nationalities is located in the heart of Berlin and covers our markets in Germany, Austria, the Netherlands, Belgium and Sweden with >100 Million € in revenue. tink is the right place for you if you are a motivated and highly skilled person that wants to accelerate our growth together.
Investor & Board Member
2021
Everphone is the one-stop solution for company smartphones and tablets. As pioneer and leading device-as-a-service provider, Everphone handles everything from sourcing, configuration, device administration, security as well as the handling of broken devices and returns for companies and organizations. This saves companies’ internal IT departments up to two working hours during device set-up. DaaS allows companies and their employees to choose their preferred smartphones by manufacturers like Apple, Google, Samsung, and Fairphone. Everphone already manages more than 350,000 devices for more than 1,000 companies, among them international consulting firms and multiple DAX companies. The company was founded by Jan Dzulko in 2016 and employs about 250 people in Berlin, Munich (both Germany), and Miami, Florida. Investors are, among others, Alleycorp, ApolloCapital, Cadence Growth Capital, signals Venture Capital, and T.Capital. Everphone received the Ecovadis silver medal in 2023, making it a part of the most sustainable 25 percent of the companies assessed.and T.Capital. In 2023, Everphone received the Ecovadis Silver Medal, placing it among the most sustainable 25 percent of companies evaluated.
Investor & Board Member
2021
PLENTICON – ein Name, der den Kern unserer Unternehmensgruppe auf den Punkt bringt. Während PLENTI für Fülle und Vielschichtigkeit steht und auf ein komplementäres, umfangreiches Leistungsspektrum hindeutet, steht CON für „zusammen“, „mit“. Es steht für die Gemeinschaft innerhalb unserer PLENTICON GROUP und zugleich für die Gemeinschaft mit unseren Kunden, Geschäftspartnern und Herstellern. Eine Gemeinschaft, die uns die besten Voraussetzungen bietet, Sie in die digitale Zukunft zu begleiten. Seite an Seite. Sind Sie bereit? Wir sind es! Mit rund 420 Mitarbeitenden an 13 Standorten und einem leistungsfähigen Netzwerk der besten Technologiepartner stehen wir sowohl bei regionalen als auch bundesweiten IT-Projekten eng an Ihrer Seite und bieten Ihnen alle Lösungen für das Büro der Zukunft aus einer Hand. Unsere PLENTICON GROUP vereint dazu die Kompetenzen erfahrener und auf alle zukunftsweisenden Segmente der Unternehmens-IT spezialisierter Systemhäuser unter einem Dach.
Investor & Board Observer
2020
PlusDental wants to give everyone the chance to show their most beautiful smile by democratizing the access to state-of-the-art dental care. We are one of the fastest-growing and most invested-in MedTech companies in Europe. Since our launch in 2017, we transitioned from being a startup to becoming a scaleup and want to continue using our momentum to grow our brand. With a strong foundation in the European startup scene and dynamic partners in dentistry we meet the highest medical standards and close the gap between aesthetic dentistry and modern technology. Our Headquarter in Berlin is not only home to our Dental Lab with a team of over 150 dentists, dental technicians, and production staff, we also combine this medical excellence with almost 250 professionals with experience in fast scaling environments. We have a strong focus on our tech, data, and product teams which are active drivers in our success and a huge factor in our customer experience and the quality of our product. We pride ourselves by building broad teams in marketing and hr, having honest and authentic relationships with our patients and employees alike. We are in touch with our quality management, having an inhouse customer care and sales team, making sure we are constantly aware of the needs of our patients. In 2020 we not only raised €32 million in additional funding, we also conquered COVID-19 and still managed to maintain our growth. We treated over 35.000 patients and our clinic management and business development team supports 4 flagship clinics in Berlin, Düsseldorf, Hamburg, and Frankfurt am Main and over 200 partner clinics in Germany, Switzerland, Austria, Spain, France, Sweden, the Netherlands and the United Kingdom. Constantly expanding our network and building one of the biggest digital dentistry plattforms in Europe and China. We secured an addional €35 million in 2021. https://plusdental.de/impressum https://plusdental.de/datenschutz
Member of the Board
2014
RAILPOOL is one of the leading railway vehicle leasing companies offering real expertise for full service from a single source. The company was founded in Munich in 2008 and now operates in 18 European countries. RAILPOOL is one of the largest providers in Europe with around 400 locomotives and 148 passenger vehicles and an investment total of over one billion euro. The RAILPOOL fleet covers 85,000,000 kilometers every year and makes an important contribution to the modal shift to rail. RAILPOOL has its own warehouse with more than 3,100 different spare parts and components of an investment value of around 20 million Euros. RAILPOOL. Flexibility For Rent
Member of the Board
2013
Missie en visie In het Dental Clinics teamconcept werken tandartsen, preventieassistentes, mondhygiënistes, mondzorgkundigen, assistentes en andere tandheelkundige specialisten onder één dak samen aan de zorg voor de patiënt. Dit heeft grote kwaliteits- en doelmatigheidsvoordelen. Tandheelkundig specialisten kunnen nu beter inspelen op de toenemende complexiteit en omvang van de zorgvragen. Ook krijgen zij de handen vrij om zich te richten op meer complexe specialismen en geavanceerde behandelmethoden. Modern ingerichte behandelkamers, geavanceerde apparatuur, optimale praktijkondersteuning, mentoring, opleiding, collegiale kruisbestuiving en overleg zorgen voor continue kwaliteitsimpulsen. Lachen is leven Lachen is altijd verbonden met positieve emoties. Niet voor niets zeggen we vaak dat lachen gezond is. Of het nu gaat om bleken, een prothese, een beugel of kronen, wij helpen u graag aan een mooie, spontane lach die bij uw persoonlijkheid past. Complete, optimale mondzorg Door onder één dak samen te werken kunnen tandheelkundige specialisten u meer behandelmogelijkheden en optimale zorg bieden. Bij iedere Dental Clinics groepspraktijk staat een compleet een team hoogopgeleide tandheelkundige medewerkers tot uw dienst: 1. We bespreken complexe problematiek in teamverband; een second opinion is altijd mogelijk 2. Onze groepspraktijken zijn uitgerust met de modernste apparatuur 3. Alle tandheelkundige specialisten doen veel aan (na)scholing
Experience · 16 entries
All (16)
Investments (11)
Founder (1)
Board (10)
2025
Managing Partner
2025
YSE Capital Management is a European Private Equity Investment platform focused on partnering with high-quality businesses across Europe providing bespoke capital solutions.   YSE invests in growing and profitable B2B businesses with a focus on market-leading companies operating in attractive niches and a long-term perspective. We pursue a partnership-driven approach, working closely with management teams and founders to support active value creation and strong corporate governance.   YSE follows a pan-European investment strategy with an on-the-ground presence across key Western European markets and provides access to the best deals in Europe for institutional and private investors. 
2024
Investor & Board Member
2024
Lunar X is a future-forward media company that invests in digital-first content brands to elevate them into globally loved franchises. We believe that the most successful content brands of the future will emerge not from boardrooms but from creators who are able to expand their reach and transcend their platforms, to better connect with the communities who love their work. Lunar X partners with creators by providing access to capital, entrepreneurial excellence and global networks - with the aim of delivering content and experiences that are educational, innovative and entertaining.
2021
Investor & Senior Advisor
Jun 2021
DEX prime GmbH ist die Pionierplattform für B2B Drittsicherheiten: eine neue Ertragsquelle zur Deckung der gestiegenen Refinanzierungskosten, Sanierungskosten und CO2-Steuer für Immobiliengesellschaften sowie ein neuer Katalysator zur Schließung der Finanzierungslücke für Projektentwickler.
Investor & Board Member
2021
tink is the leading e-commerce platform for smart home hardware and services. Since the company was founded in 2016, we have helped over a million customers to create a smart and climate-friendly home. What sets us apart is that we not only offer the best hardware from renowned brands like Google, Apple, SONOS and Bosch. At tink, we provide holistic solutions for the use cases of our customers. Our team of >150 tinkies from over 25 nationalities is located in the heart of Berlin and covers our markets in Germany, Austria, the Netherlands, Belgium and Sweden with >100 Million € in revenue. tink is the right place for you if you are a motivated and highly skilled person that wants to accelerate our growth together.
Investor & Board Member
2021
Everphone is the one-stop solution for company smartphones and tablets. As pioneer and leading device-as-a-service provider, Everphone handles everything from sourcing, configuration, device administration, security as well as the handling of broken devices and returns for companies and organizations. This saves companies’ internal IT departments up to two working hours during device set-up. DaaS allows companies and their employees to choose their preferred smartphones by manufacturers like Apple, Google, Samsung, and Fairphone. Everphone already manages more than 350,000 devices for more than 1,000 companies, among them international consulting firms and multiple DAX companies. The company was founded by Jan Dzulko in 2016 and employs about 250 people in Berlin, Munich (both Germany), and Miami, Florida. Investors are, among others, Alleycorp, ApolloCapital, Cadence Growth Capital, signals Venture Capital, and T.Capital. Everphone received the Ecovadis silver medal in 2023, making it a part of the most sustainable 25 percent of the companies assessed.and T.Capital. In 2023, Everphone received the Ecovadis Silver Medal, placing it among the most sustainable 25 percent of companies evaluated.
Show all 16 entries ↓
Investment activity
2013–2024 · 11 investments
201312014320181202012021420241
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