Marc Griefahn

Business Owner - Founder, Investor and Business Angel

📍 Greater Hamburg Area, Germany🔄 Updated September 2026💼 2 investments📅 15 years investing🗓 Last invested Jan 2014
Operator-angel🌍 Germany
2
Total investments
1
Early stage
0
Mid stage
0
Late stage
15y
Years active

Portfolio

2 investments · sorted by recency
All investments
Early stage
Mid stage
Late stage
Investor
Jan 2014
Tech2go is specialized in the development of solutions for the digital documentation and support for emergency medical services (EMS) with our products MedicalPad, FirePad and Billing.
Investor
May 2011
We believe healthcare should be accessible, dependable and affordable for everyone. Now part of Hims & Hers Health, Inc., one of the fastest-growing digital health companies in the world, we’re entering an exciting new chapter as we expand our reach and accelerate our impact. Our team of Doctors, Engineers, Patient Care Advisors, Marketers, Product Managers, UX Designers, Pharmacists and Commercial and Operations Specialists works together to build digital healthcare that truly fits around our patients’ lives. The pandemic changed how people access care, and we’ve led the way by providing millions of consultations across the UK, Germany, France and Ireland. More patients than ever turn to us for help with weight loss and other conditions that can be safely treated online. We’re evolving our service to make care even more personal, supportive and effective. We’re doing more than providing healthcare. We’re empowering people to take control of their health, and with the support of Hims & Hers, we’re scaling our vision to become a global leader in digital healthcare. It’s an exciting time to join. If you want to be part of our journey, make an impact, grow with us and help us define and influence the future of digital healthcare, check out our current vacancies now.
Experience · 5 entries
All (5)
Investments (2)
Founder (3)
2014
Investor
Jan 2014
Tech2go is specialized in the development of solutions for the digital documentation and support for emergency medical services (EMS) with our products MedicalPad, FirePad and Billing.
2013
JuMaJo GmbH
Owner / CEO
Apr 2013
2011
Investor
May 2011
We believe healthcare should be accessible, dependable and affordable for everyone. Now part of Hims & Hers Health, Inc., one of the fastest-growing digital health companies in the world, we’re entering an exciting new chapter as we expand our reach and accelerate our impact. Our team of Doctors, Engineers, Patient Care Advisors, Marketers, Product Managers, UX Designers, Pharmacists and Commercial and Operations Specialists works together to build digital healthcare that truly fits around our patients’ lives. The pandemic changed how people access care, and we’ve led the way by providing millions of consultations across the UK, Germany, France and Ireland. More patients than ever turn to us for help with weight loss and other conditions that can be safely treated online. We’re evolving our service to make care even more personal, supportive and effective. We’re doing more than providing healthcare. We’re empowering people to take control of their health, and with the support of Hims & Hers, we’re scaling our vision to become a global leader in digital healthcare. It’s an exciting time to join. If you want to be part of our journey, make an impact, grow with us and help us define and influence the future of digital healthcare, check out our current vacancies now.
2003
Owner
Jan 2003
Defibrillation solutions. Faster. Corscience develops effective and affordable defibrillation solutions for manufacturers and distributors worldwide. In doing so, we draw on extensive, decade-long market and technology expertise and support you in bringing your solutions to market faster. For our defibrillation solutions, we combine sophisticated electronics and software with premium mechanics. Whether engineering services or approved OEM modules and products, we tailor our solutions to our customers’ preferences. With around 120 employees at our headquarters in Erlangen, Germany, we have already successfully completed more than 300 projects for medical technology companies in Europe, Asia and the US. Trust the support of an independent technology partner – and reach the market faster. Imprint https://www.corscience.com/imprint/ Privacy Policy https://www.corscience.com/privacy-policy/
early stageMedical Device
1972
Owner
Feb 1972
We Simplify Saving Lives WEINMANN Emergency is a family-owned, internationally active medical technology company. With our mobile system solutions for emergency, transport and disaster medicine, we set standards for saving human lives. In close collaboration with professional users in emergency medical services, hospitals and military medical corps, we develop innovative medical products for ventilation, monitoring/defibrillation and data management. For more than 100 years we have offered our customers a high degree of reliability, extensive experience and quality made in Germany. Legal: https://www.weinmann-emergency.com/legal/