fos4x
GermanyWho owns fos4x?
fos4x is a German ClimateTech company, now owned by Polytec Group, which acquired it in 2021 from High-Tech Gruenderfonds (HTGF).
Hand-verified · updated 2026-09-30
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Key facts
- ·Fully exited in 2021 to Polytec Group.
- ·Average hold across 3 realized cycles: 8 years.
Ownership history
3 ownership periods · co-invest detected
Bayern Kapital sold fos4X to Polytec in 2020 after 8 years.
High-Tech Gruenderfonds (HTGF) sold fos4x to Polytec Group in 2021 after 9 years.
Unternehmertum Venture Capital Partners sold fos4x to PolyTech in 2020 after 8 years.
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Who owns fos4x?
fos4x is now owned by Polytec Group, which acquired it in 2021 from High-Tech Gruenderfonds (HTGF).
When did Polytec Group acquire fos4x?
Polytec Group acquired fos4x in 2021, buying from High-Tech Gruenderfonds (HTGF).
Who did fos4x sell to?
High-Tech Gruenderfonds (HTGF) sold fos4x to Polytec Group in 2021 (Trade Sale). Bayern Kapital sold fos4x to Polytec in 2020 (Trade Sale). Unternehmertum Venture Capital Partners sold fos4x to PolyTech in 2020 (Trade Sale).
Who has owned fos4x over time?
fos4x has been through 3 private-equity ownership periods: Bayern Kapital · via Seedfonds Bayern · 2012–2020 · sold to Polytec · (Trade Sale); Unternehmertum Venture Capital Partners · via UVC Fund I · 2012–2020 · sold to PolyTech · (Trade Sale); High-Tech Gruenderfonds (HTGF) · via HTGF II · 2012–2021 · sold to Polytec Group · (Trade Sale).