Sake Bosch
About Sake Bosch
Sake Bosch is based in Amsterdam. He founded Prime Ventures in 1999 and is its Managing Partner. Prime describes itself as a European technology venture firm.
Before Prime he was a senior principal at Holland Venture, where he managed technology investments. Prime's site says he worked on Applicare Medical Imaging (acquired by GE Medical Systems), BWise (acquired by Nasdaq), SQL Systems and Freecom. He joined Holland Venture in 1994 after working as an independent corporate finance consultant for early-stage companies. He started his career in 1989 as a strategic market analyst at VNU and holds an MSc in Business Administration.
Aggregators such as Tracxn and Shizune list him as an angel investor. His public profiles describe his work through Prime Ventures.
Databases list him as an individual investor in companies including Redefine Meat (Series A, Feb 2021), Remilk (Dec 2020), Mermade Seafoods (seed, 2022), Faircraft (seed Jul 2021, Series A Nov 2024) and FononTech (seed, May 2025).
Profiles show he has served on boards, including SlimPay, Takeaway.com, Greetz and Civolution. Investment counts differ by source, so treat them as approximate.
In July 2026 he led Alfa AI's £1M seed round. Alfa AI is a London recruitment startup that automates candidate sourcing and screening. Press coverage names FirstDegree, Golden Egg Check and Black Green Capital as participants. Press names the lead only as "Sake Bosch". Crunchbase and NFX Signal attribute the deal to this Sake Bosch.
He is also listed as an investor in Magentiq Eye (AI-assisted colonoscopy, Series A, Jul 2025). He led FononTech's seed round. FononTech makes 3D integration technology for semiconductors used in edge AI devices.
Prime's page for him lists SaaS, marketplaces, fintech and consumer as interests. His recent deals also include semiconductors, medical AI, food technology and materials. Most of his companies are in Europe, and some are in Israel. He invests at seed and Series A, and databases also list pre-seed rounds.
He has not publicly stated a personal check size. Third-party estimates differ, so none is given here.
- Alfa AI: AI recruiting platform in London. He led the £1M seed in July 2026.
- FononTech: semiconductor 3D integration for edge AI devices. He led the seed round in 2025.
- Magentiq Eye: AI for colonoscopy. Series A participant, July 2025.
- Faircraft: seed in July 2021 and Series A in November 2024, per NFX Signal.
- Redefine Meat: Series A in February 2021, per Startup Nation Central.
- Remilk: animal-free dairy. Round in December 2020, per Startup Nation Central.
- Mermade Seafoods: cultured seafood. Seed round in 2022.
- primeventures.com/people/sake-bosch
- pitchbook.com/profiles/person/39026-17P
- crunchbase.com/person/sake-bosch
- crunchbase.com/organization/alfa-ai
- signal.nfx.com/investors/sake-bosch
- thecaptable.co.uk/article/alfa-ai-raises-1m-seed-led-by-sake-bosch-as-
- businesscloud.co.uk/news/former-dragons-den-star-joins-alfa-ai-followi
- tracxn.com/d/people/sake-bosch/__Iv3qV93Qx6SDzTFaHJzrpkqCeuinycpMco3KP
Investing activity
Sake Bosch appears in 1 AI deal tracked by the Lounge deals desk, and led 1 of them. The rounds are mostly Seed, with a median round size of $1M. The most recent is Alfa AI (Seed, £1M, Aug 2026).
Sake Bosch most often invests alongside Black Green Capital, Golden Egg Check and FirstDegree, and the companies they back on Lounge are mostly in AI.
Deals
Frequently asked questions about Sake Bosch
Who is Sake Bosch?
Sake Bosch is the founder and Managing Partner of Prime Ventures in Amsterdam. He has worked in venture capital since the 1990s and is also listed as an individual investor in several startups.
What AI startups has Sake Bosch invested in?
He led Alfa AI's £1M seed round in July 2026. He is also listed as an investor in Magentiq Eye (AI colonoscopy) and FononTech (semiconductors for edge AI).
What stage does Sake Bosch invest in?
His recent deals are mostly seed and Series A. Some databases also list pre-seed rounds.
What is Sake Bosch's check size?
He has not stated a check size publicly. Third-party databases give conflicting ranges, so founders should ask him directly.
Does Sake Bosch invest outside Europe?
Most of his listed investments are in Europe, with some in Israel. Prime Ventures describes its focus as European technology companies.
How can founders contact Sake Bosch?
He is on LinkedIn at linkedin.com/in/sakebosch and on X as @sakebosch. Prime Ventures also has a page for him.
Is Sake Bosch an angel investor?
Yes. Sake Bosch invests personally as an angel.
What AI companies has Sake Bosch invested in?
Sake Bosch's AI investments include Alfa AI. The 1 round on Lounge are listed on this page with amounts, dates and co-investors.
What stage does Sake Bosch invest at?
In the rounds tracked on Lounge, Sake Bosch has invested at Seed, with a median round of $1M. Sake Bosch led 1 of those rounds.
Who does Sake Bosch co-invest with?
Sake Bosch's most frequent co-investors on Lounge are Black Green Capital (1 deal), Golden Egg Check (1 deal) and FirstDegree (1 deal).