Person profile
Jacek Sychowicz has been associated with Mastab Sp. z o.o. since the company was founded and is among its founders. After divesting his shares he stayed on the board and has held a management role for 14 years. This continuity suggests strong trust from the current owners and tangible value he brings to the company.
Management experience
Anchor company
Average tenure per company
Active board load
Profile type
Active business scale
Historical companies
Age
Founded companies
Position vs peers
Among 74 people (Szczecin, 45-54)
Registry signals
Current and historical roles.
Companies total
4
3 active
Roles total
6
3 active
Years active
17 years and 7 months
First activity
September 26, 2008
Founded the company · Konstrukcja Spółka z Ograniczoną Odpowiedzialnością
Latest activity
January 5, 2026
Left the company - Wspólnik · Konstrukcja Spółka z Ograniczoną Odpowiedzialnością
Selected highlights - full list on the Companies tab.
Most recent registry entries - full timeline on the History tab.
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Data from the Polish Central Register of Beneficial Owners (CRBR).
Companies and people connected to Jacek Jerzy Sychowicz - click any node to open its profile.
Total: 3 · Active: 3