Sebastian Kamil Siejko
age 50Currently 3 roles in 3 KRS entities. In the KRS since 2021.
Roles
| Entity | Role | Since | Address |
|---|---|---|---|
Navigator Debt Advisory sp. z o.o. |
since Dec 10, 2025 | ul. Twarda 18, 00-105 Warszawa | |
Mercaton Ssf sp. z o.o. |
since Apr 13, 2023 | ul. Januszowicka 5, 53-135 Wrocław | |
Miszkolc sp. z o.o. |
since Jun 16, 2021 | ul. Solec 81B/A-51, 00-382 Warszawa |
Connections graph
Change history
| Date | Event | Details | Entity |
|---|---|---|---|
| Appointed | Management Board Member Navigator Debt Advisory sp. z o.o. | Navigator Debt Advisory sp. z o.o. | |
| Left | President of the Management Board Miszkolc sp. z o.o. | Miszkolc sp. z o.o. | |
| Company founded | Partner (10% of shares worth PLN 500) Mercaton Ssf sp. z o.o. | Mercaton Ssf sp. z o.o. | |
| Appointed | President of the Management Board, Partner (76.94% of shares worth PLN 47,700) Miszkolc sp. z o.o. | Miszkolc sp. z o.o. |
Business scale
Total for the entities where the person sat on the management board or held shares, for the years in office.
Risk signals
| Signal | Details |
|---|---|
Politically exposed person (PEP) | None |
Person on a sanctions list | None |
Bankruptcy or restructuring | None |
Liquidation | None |
Sanctions list | None |
Inactive entity | None |
Connected people
| Person | Shared entity | Period | |
|---|---|---|---|
Elżbieta Maria Chadaage 73 | Navigator Debt Advisory sp. z o.o. | since Dec 10, 2025 | |
Magdalena Maria Tuzimekage 46 | Navigator Debt Advisory sp. z o.o. | since Dec 10, 2025 | |
Jakub Wiktor Bartkiewiczage 53 | Miszkolc sp. z o.o. | since Jun 16, 2021 | |
Tomasz Witold Nietubyćage 44 | Mercaton Ssf sp. z o.o. | since Apr 13, 2023 |