| Company | Timeline | Status | |
| Bookshop Bartek & Szymon Limited Director • Director | 7 Feb 2025←11 Months→Current | Active | |
| Quattro Solutions Limited Director • Director | 23 Aug 2023←1 Year 5 Months→10 Feb 2025 | Active | |
| Ksiegarnia Bartek Limited Director • Managing Director | 1 Jun 2021←4 Years→Current | Liquidation | |
