Stefan Wenzel
About Stefan Wenzel
Stefan Wenzel advises businesses on digital commerce and AI, and also works as a speaker and author. His site describes three decades of professional experience, 25 years in leadership roles and more than 25 years in digital commerce, including nine years in England and the Netherlands. His LinkedIn profile lists Hamburg as his location and Helmut Schmidt University (Universität der Bundeswehr Hamburg) as his education.
ShopAgentic's press page describes him as a former CEO of eBay, OTTO and Tom Tailor. The Next Web calls him a former eBay Germany and OTTO chief. ShopAgentic co-founder Alexander Ringsdorff says the two first worked together in 2009, when they built McLaren's e-commerce business.
His site lists him as Executive Advisor and Operating Partner at SW3. He is the author of a book on agentic commerce, published in April 2026, and hosts the podcast Zwei mit Schuss. He gives keynotes on agentic commerce, for example at SCORE! in Switzerland.
The only AI round we can confirm is the ShopAgentic pre-seed. ShopAgentic raised €1.9M, co-led by May Ventures and Greenfield Capital. The Next Web lists Wenzel among the commerce veterans who joined as angels, alongside Spryker founder Boris Lokschin and Exciting Commerce's Jochen Krisch. The Lounge deals desk records the round in June 2026.
He is also a strategic advisor to ShopAgentic. The company announced this on March 23, 2026. ShopAgentic was founded in December 2025 by Alexander Ringsdorff and Kai-Thomas Krause, who previously co-founded NewStore. It builds what it calls a native agentic commerce system.
Wenzel has not published a check size, fund size or formal investment thesis that we could find. His public work points to one theme: AI agents in commerce, covering how products are discovered, compared and bought, and how that shifts power between platforms, brands and consumers. On LinkedIn he has described ideas he calls Liquid Demand and Demand Exchange, in which agents turn customer demand into something tradable. He says he is looking for retailers, brands and founders to discuss these ideas with.
The one investment we can confirm is a pre-seed round in Germany.
- ShopAgentic: agentic commerce infrastructure for AI shopping agents, built by the founders of NewStore. He took part as an angel in its €1.9M pre-seed, co-led by May Ventures and Greenfield Capital, and he is also a strategic advisor.
Investing activity
Stefan Wenzel appears in 1 AI deal tracked by the Lounge deals desk. The rounds are mostly Pre-seed, with a median round size of $2M. The most recent is ShopAgentic (Pre-seed, €1.9M, Jun 2026).
Stefan Wenzel most often invests alongside Greenfield Partners, May Ventures, Peter Wolff and Peter McCoy, and the companies they back on Lounge are mostly in AI.
Deals
Frequently asked questions about Stefan Wenzel
Does Stefan Wenzel invest in AI startups?
Yes. He was one of the angels in ShopAgentic's €1.9M pre-seed, an AI agentic commerce startup. We found no other confirmed AI investments.
What is Stefan Wenzel's angel check size?
It is not public. We found no stated check size or fund size, so we do not list one.
What is Stefan Wenzel's background?
He is a digital commerce executive and advisor based in Hamburg. ShopAgentic describes him as a former CEO of eBay, OTTO and Tom Tailor. He now works as an advisor, speaker and author on digital commerce and AI.
What kind of founders should pitch Stefan Wenzel?
His public work centres on agentic commerce, meaning AI agents that research, compare and buy products for consumers. Founders working on retail, brand or marketplace problems in that area are closest to what he writes and speaks about. He has not published formal investment criteria.
Is Stefan Wenzel connected to ShopAgentic beyond investing?
Yes. He joined ShopAgentic as a strategic advisor in March 2026, and his book on agentic commerce features the company as a reference.
Is Stefan Wenzel an angel investor?
Yes. Stefan Wenzel invests personally as an angel.
What AI companies has Stefan Wenzel invested in?
Stefan Wenzel's AI investments include ShopAgentic. The 1 round on Lounge are listed on this page with amounts, dates and co-investors.
Where is Stefan Wenzel based?
Stefan Wenzel is based in Hamburg, Hamburg, Germany.
What stage does Stefan Wenzel invest at?
In the rounds tracked on Lounge, Stefan Wenzel has invested at Pre-seed, with a median round of $2M.
Who does Stefan Wenzel co-invest with?
Stefan Wenzel's most frequent co-investors on Lounge are Greenfield Partners (1 deal), May Ventures (1 deal), Peter Wolff (1 deal), Peter McCoy (1 deal) and Jochen Krisch (1 deal).