Fabian Silberer
About Fabian Silberer
Fabian Silberer is a co-founder and co-CEO of sevDesk, an accounting software company based in Offenburg, Germany. Tracxn lists the company as founded in 2007 by Silberer and Marco Reinbold, and as acquired. He studied at Hochschule Offenburg and completed a Master's degree there in 2015, according to Tracxn.
In a LinkedIn post he said he had been a founder and co-CEO of sevDesk for ten years. He also said he had been appointed to the advisory board (Kuratorium) of Hochschule Offenburg, which consists mostly of regional politicians and business leaders. His LinkedIn headline has listed a VP People role at sevDesk.
Public data on his angel activity is limited. Tracxn lists two investments from October 2023. One is the happyhotel seed round (October 4, 2023). The other is the DYNO round (October 10, 2023), which Tracxn labels as seed. Startbase describes the DYNO round as a 1.5 million euro pre-seed led by 468 Capital and LEA Partners, and names Silberer among the founders and business angels taking part.
CB Insights counts 7 investments for him, but only the HappySupport round is visible without a subscription.
His AI-related investment on record is HappySupport, a Stuttgart startup that raised a 200,000 euro pre-seed round in 2026. Startbase reports that the company is working on outdated documentation in modern AI systems. It was founded by Niklas Gysinn and Henrik Roth. Silberer invested alongside Flip CEO Benedikt Brand and the state bank L-Bank. Startbase notes that some of the investors already use the product in pilot operation.
The visible rounds are pre-seed and seed. Tracxn gives his investment geography as Germany and his sectors as Enterprise Applications, Consumer and two others it does not name. The HappySupport coverage presents him as an investor with operating experience from running a SaaS company. He has not published a check size or an investment thesis that we could find, so none is stated here.
- HappySupport: AI-focused help center and documentation startup in Stuttgart, 200,000 euro pre-seed in 2026.
- DYNO: German startup that raised a pre-seed round reported at 1.5 million euros, with Silberer among the angels (October 2023).
- happyhotel: German startup that raised a seed round in October 2023, per Tracxn.
- sevDesk: accounting software company he co-founded in 2007, not an angel investment.
- startbase.com/news/happysupport-holt-200-000-euro-pre-seed
- startbase.com/news/15-millionen-euro-pre-seed-investment-fuer-dyno
- tracxn.com/d/people/fabian-silberer/__19MxXpbJVeOxrSO26_ZF7VRKqzg06n2J
- tracxn.com/d/companies/sevdesk/__T0xZiK-Pht4Rxrcty958Ror3KxttXo_BFgXTx
- cbinsights.com/investor/fabian-silberer
- linkedin.com/in/fabian-silberer-8129568
- de.linkedin.com/posts/fabian-silberer-8129568_sevdesk-hso-innovation-a
Investing activity
Fabian Silberer appears in 1 AI deal tracked by the Lounge deals desk. The rounds are mostly Pre-seed, with a median round size of $225K. The most recent is HappySupport (Pre-seed, €200,000, Jun 2026).
Fabian Silberer most often invests alongside Benedikt Brand and L-Bank, and the companies they back on Lounge are mostly in AI.
Deals
Frequently asked questions about Fabian Silberer
Who is Fabian Silberer?
He is a co-founder and co-CEO of the accounting software company sevDesk in Offenburg, Germany. He also invests as an angel in early-stage startups.
Has Fabian Silberer invested in AI startups?
Yes. He took part in the 200,000 euro pre-seed round of HappySupport in 2026. The company works on keeping documentation up to date for AI systems.
What stage does Fabian Silberer invest in?
His publicly reported rounds are pre-seed and seed, including HappySupport, DYNO and happyhotel.
What is Fabian Silberer's check size?
It is not public. Only total round sizes are reported, and his individual amount is not disclosed.
Does Fabian Silberer invest outside Germany?
Tracxn lists Germany as his only investment location. We found no public record of investments elsewhere.
Which investors have co-invested with Fabian Silberer?
In HappySupport, they include Benedikt Brand and L-Bank. In DYNO, they include 468 Capital, LEA Partners and other angels such as Martin Trenkle and Marco Reinbold.
Is Fabian Silberer an angel investor?
Yes. Fabian Silberer invests personally as an angel.
What AI companies has Fabian Silberer invested in?
Fabian Silberer's AI investments include HappySupport. The 1 round on Lounge are listed on this page with amounts, dates and co-investors.
What stage does Fabian Silberer invest at?
In the rounds tracked on Lounge, Fabian Silberer has invested at Pre-seed, with a median round of $225K.
Who does Fabian Silberer co-invest with?
Fabian Silberer's most frequent co-investors on Lounge are Benedikt Brand (1 deal) and L-Bank (1 deal).