Person profile
Bartosz Kellner has been associated with Proxima-petrol Sp. z o.o. since the company was founded and is among its founders. He has stayed on the board and has held a management role for 10 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
Companies wound up
Age
Founded companies
Position vs peers
Among 715 people (Śląskie, 45-54)
Registry signals
Current and historical roles.
Companies total
3
2 active
Roles total
5
4 active
Years active
22 years and 10 months
First activity
October 17, 2003
Founded the company · Plant
Latest activity
March 11, 2026
Founded the company · Majcher TEAM Petrol
Selected highlights - full list on the Companies tab.
Bartosz Jan Kellner is listed in the Polish National Court Register (KRS) as Member / Partner at Proxima-petrol Sp. z o.o. 5 roles across 3 entities are on record. Time served on company bodies: 22 years and 10 months.
Bartosz Jan Kellner currently holds roles at: Proxima-petrol Sp. z o.o., Majcher TEAM Petrol Sp. z o.o. The full list, with appointment and termination dates, is on the Companies tab.
The current role is Member / Partner at Proxima-petrol Sp. z o.o., taken directly from the KRS register.
Most recent registry entries - full timeline on the History tab.
2026
March 11, 2026
Founds the company as a co-owner and takes the role of President of the Management Board
Majcher TEAM PetrolRate business credibility - Bartosz Jan Kellner.
No ratings
The first entry for this person dates from October 17, 2003 — 22 years and 10 months ago.
Companies and people connected to Bartosz Jan Kellner - click any node to open its profile.
Total: 3 · Active: 3