Thomas D.

Managing Partner @ 4D Ventures | Patient Capital + Vision

📍 Bruges Metropolitan Area, Belgium🔄 Updated September 2026💼 22 investments📅 24 years investing🗓 Last invested May 2024
VC🌍 Belgium20+ investments
22
Total investments
10
Early stage
5
Mid stage
3
Late stage
24y
Years active

Portfolio

20 investments · sorted by recency
All investments
Early stage
Mid stage
Late stage
co-owner/ early investor
May 2024
At Outfund, were driven by a simple belief: every growing business deserves access to the capital needed for expansion while retaining ownership and control. Whether its for marketing, inventory, hiring, or other growth initiatives, we provide the resources to help your business thrive. Since 2017, weve teamed up with hundreds of budding brands across sectors like e-commerce, tech, and consumer goods (were fans of them all!). From the UK to Australia, Spain to the USA, we’re here to provide non-dilutive funding at great rates.
co-owner/ early investor
Jan 2023
Odin lets anyone, anywhere launch and run a private investment firm online - think Shopify for Venture Capital and Private Equity. We handle the full back office stack end to end, flexibly: legal structuring, investor onboarding, KYC/AML, payments, tax, reporting, and exits. We administer over $500m in assets, covering investments from pre-seed to pre-IPO. This includes household names like OpenAI and SpaceX but also new companies focusing on tons of cool things like: - Next-gen micronuclear reactors - Atmospheric CO₂ removal at gigaton scale - Asteroid mining - Space-based manufacturing (fiber, alloys, pharmaceuticals) - Crazy biotech eg. wet computers based on human neurons We believe capital is one of the most powerful tools for shaping the world - and more people should be putting it to work. We also have a strong conviction that some of the best capital allocators do not fit the “traditional mould” of a VC or private equity investor. If youve got sector expertise in an interesting field, youve never been an VC / PE investor before but youve thought about it, feel free to reach out.
co-owner/ early investor
Nov 2022
HVN is the leading professional marketplace for premium home and villa rentals, on a mission to help everyone find their haven and feel at home in the world. Through our award-winning B2B2C booking portal and 360° TripDesign™ technology, HVN empowers trip designers to seamlessly discover, book, and coordinate unique residential stays around the world — partnering with the most trusted brands in luxury, managed, and corporate travel to help travelers experience the joy of living anywhere in the world, for any length of stay. HVN was recently named the fastest-growing travel accommodations marketplace in America by the Inc. 5000, winner of the top Travel Weekly Magellan Gold Award for “Best Overall Online Booking Interface," and by Skift as one of the Top Industry Innovators in Short Term Rentals defining the future of travel. Through it all, we strive to deliver a better way to stay for travelers, families, and groups seeking the best of hospitality and home: a haven to come home to, wherever your journey takes you. If youre interested in learning more or partnering with HVN, please reach out to info@stayhvn.com. Were excited to hear from you! #FindYourHaven #StayHVN
co-owner/ early investor
Nov 2022
IntelliProve is a fast growing MedTech start-up based in Ghent, Belgium. The company is developing a computer technology capable of accurately determining health parameters within a few seconds, based on an optical measurement of the face. A combination of novel signal processing and computer vision technology is at the heart of IntelliProve's technology. IntelliProve measures physiological and mental health parameters with one click on a smartphone. All within the healthcare platform. - fast - contactless - no hardware - seamlessly integrated Connect to IntelliProve’s API and power up your healthcare platform or app with the future of biomarker technology. Deliver quantitative and real-time health insights to your users! Find out more about IntelliProve on the website! https://www.intelliprove.com/
co-owner/ early investor
Sep 2022
Sizebay was born with the objective of solving one of the biggest problems of those who sell clothes over the internet: consumer distrust of the size and fit of the clothes. Through a technological platform, which relates the modeling of brands/manufacturers, e-commerce products and user measurements, we deliver a powerful tool for recommending sizes and analyzing clothing suitability (virtual fitting room) that makes it possible to buy clothes at internet with more confidence and assertiveness. Simple to use and super easy to integrate, Sizebay's Size and 3D Fit Advisor Platform is an innovative service that improves the user experience in the process of buying clothes in your e-commerce. From information (gender, height, weight and age), we deduce the body measurements of the user and compared with measurements of the chosen piece, suggesting the most appropriate size and allowing comparison with other trim available.
co-owner/ early investor
Jun 2022
At Palqee, we are changing the way companies operationalise Data Governance and AI Compliance by building intuitive technologies that give peace-of-mind about your most important data. Our mission is to create trusted relationships between businesses and people around the world. With a passion to solve global privacy concerns, our team is building the most advanced Privacy Management ecosystem yet. Learn more at Palqee.com
co-owner/ early investor
Mar 2022
Oto builds digital therapy apps for overlooked and underserved chronic conditions. Backed by Y Combinator.
co-owner/ early investor
Mar 2022
AI Operating System for Venture
co-owner/ early investor
Mar 2022
Media accessibility. Enabling accessible and inclusive media, not just reachable, but also fully understandable for everyone, regardless of their abilities. Try Subly. Be inclusive and improve engagement. > Provide accessibility for individuals with disabilities. > Speed up your workflow with simple and controlled editing. > Enhance the experience for viewers who prefer to read along with the audio. > Increase engagement by adding subtitles for those scrolling with sound off. > Ensure compliance with multiple standards and regulations (EAA, WCAG, ADA). Women-founded, Women-led.
co-owner/ early investor
Dec 2021
Fourth Wall is a UK-based producer of animated kids and family entertainment, as well as a publisher of children’s books. The company is based in the heart of Liverpool’s bustling Ropewalks district and creates evergreen characters and compelling stories for a global audience.
angel investor 2020 cohort
Jun 2020
Collider is the accelerator driving the future of marketing and sales technology for startups, corporates and investors. We find the very best startups to invest in and scale, bring the right startups solutions at the right time to corporates, and ultimately deliver impressive investor returns. Founded in London in 2012 and also active in Amsterdam since 2017. With over five years of in depth, first-hand experience, one exit and over £13m going into the next generation of marketing and sales startups, we’ve since been listed as one of Europe’s Top Five Seed Accelerators. Our experience means we’ve built the expertise to make the very best investment decisions and add incredible value to our portfolio, to our community of corporates and investors, and to our ecosystem.
co-owner/ early investor
Aug 2019
Cambri is a plug-and-play consumer insights and concept testing tool that incorporates the most advanced market research methods and technology into a super easy to use interface. We make advanced consumer research easy, accelerate learning and amplify innovation. Our goal is to make people and brands shine.
co-owner/early investor
Aug 2019
Oppobot is a smart digital tool that streamlines concept creation and testing process. It provides instant access to global audiences through our panel provider Research Now SSI. Our clients are mainly international consumer goods and services companies. It is a perfect match for businesses who want to identify winning growth opportunities with less time and fewer resources, yet more systematically. Concept test results are available even in 24 hours, max within a week. Oppobot allows businesses to focus their energy on the most value-creating tasks: crystallizing ideas according to design-thinking principles, choosing the right target audiences and analyzing test results. Oppobot does the rest: creates valid and reliable test questions, and generates test results and comparisons. On a mission to save the world from pointlessness.
co-owner/ early investor
Jun 2019
A free simple tool for business proposals that helps you stand out from the crowd. Never miss out on another deal. Start now!
business angel
Apr 2019
We are a group of Business Angels, established in Portugal to support and fund the internationalization of Brazilian start-ups, willing to come to Europe via Portugal. Our main goal is to deliver a great Business Angels experience by empowering those involved in the entrepreneurial world. We truly believe that sharing knowledge is the key ingredient to success. Our group of angels is very diversified, transparent, open-minded and involved. We want our startups to be the best version of themselves, in order for them to bring innovative solutions to our societys problems and demands. So, if you are a star-up in Brazil, with more than one year of revenues, a great team, a relevant opportunity and need help, you came to the right place. Applications on https://gust.com/organizations/coreangels-atlantic/funding_applications/responses/sessions/new
Show all 20 investments ↓
Experience · 26 entries
All (26)
Investments (3)
Founder (21)
2024
co-owner/ early investor
May 2024
At Outfund, were driven by a simple belief: every growing business deserves access to the capital needed for expansion while retaining ownership and control. Whether its for marketing, inventory, hiring, or other growth initiatives, we provide the resources to help your business thrive. Since 2017, weve teamed up with hundreds of budding brands across sectors like e-commerce, tech, and consumer goods (were fans of them all!). From the UK to Australia, Spain to the USA, we’re here to provide non-dilutive funding at great rates.
2023
co-owner/ early investor
Jan 2023
Odin lets anyone, anywhere launch and run a private investment firm online - think Shopify for Venture Capital and Private Equity. We handle the full back office stack end to end, flexibly: legal structuring, investor onboarding, KYC/AML, payments, tax, reporting, and exits. We administer over $500m in assets, covering investments from pre-seed to pre-IPO. This includes household names like OpenAI and SpaceX but also new companies focusing on tons of cool things like: - Next-gen micronuclear reactors - Atmospheric CO₂ removal at gigaton scale - Asteroid mining - Space-based manufacturing (fiber, alloys, pharmaceuticals) - Crazy biotech eg. wet computers based on human neurons We believe capital is one of the most powerful tools for shaping the world - and more people should be putting it to work. We also have a strong conviction that some of the best capital allocators do not fit the “traditional mould” of a VC or private equity investor. If youve got sector expertise in an interesting field, youve never been an VC / PE investor before but youve thought about it, feel free to reach out.
2022
co-owner/ early investor
Nov 2022
Automate your people management processes with HRLocker's smart, cost-efficient HR cloud solution. HRLocker does the heavy lifting for you, manage holiday planning and requests, timesheets, CPD/training management, HR document distribution & digital signing, and a performance management system. HRLocker has excellent reporting capability across all modules and all Premium plans include a full end-to-end applicant tracking system, with social and employee referral campaigns with over 20 job board integrations. *Awesome backup, excellent support *Safe, secure and easy to setup & use *Built by HR professionals *Works anywhere, anytime - great for management of remote workers *Cost-effective, scales as your business grows
co-owner/ early investor
Nov 2022
HVN is the leading professional marketplace for premium home and villa rentals, on a mission to help everyone find their haven and feel at home in the world. Through our award-winning B2B2C booking portal and 360° TripDesign™ technology, HVN empowers trip designers to seamlessly discover, book, and coordinate unique residential stays around the world — partnering with the most trusted brands in luxury, managed, and corporate travel to help travelers experience the joy of living anywhere in the world, for any length of stay. HVN was recently named the fastest-growing travel accommodations marketplace in America by the Inc. 5000, winner of the top Travel Weekly Magellan Gold Award for “Best Overall Online Booking Interface," and by Skift as one of the Top Industry Innovators in Short Term Rentals defining the future of travel. Through it all, we strive to deliver a better way to stay for travelers, families, and groups seeking the best of hospitality and home: a haven to come home to, wherever your journey takes you. If youre interested in learning more or partnering with HVN, please reach out to info@stayhvn.com. Were excited to hear from you! #FindYourHaven #StayHVN
co-owner/ early investor
Nov 2022
IntelliProve is a fast growing MedTech start-up based in Ghent, Belgium. The company is developing a computer technology capable of accurately determining health parameters within a few seconds, based on an optical measurement of the face. A combination of novel signal processing and computer vision technology is at the heart of IntelliProve's technology. IntelliProve measures physiological and mental health parameters with one click on a smartphone. All within the healthcare platform. - fast - contactless - no hardware - seamlessly integrated Connect to IntelliProve’s API and power up your healthcare platform or app with the future of biomarker technology. Deliver quantitative and real-time health insights to your users! Find out more about IntelliProve on the website! https://www.intelliprove.com/
Show all 26 entries ↓
Investment activity
2002–2024 · 22 investments
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