Jakub Adam Sierakowski

age 46

Currently 8 roles in 6 KRS entities. In the KRS since 2013.

Roles

EntityRole
Radicube sp. z o.o.
  • President of the Management Board
  • Partner (33.33% of shares worth PLN 2,000)
since Mar 16, 2026
Sierra Holding sp. z o.o.
  • President of the Management Board
  • Partner (100% of shares worth PLN 5,000)
since Sep 18, 2026
Fast Growth S.A.
  • Supervisory Board Member
since Jan 8, 2020
Centrum Ochrony Środowiska sp. z o.o.
  • Partner (50% of shares worth PLN 3,000)
since Mar 8, 2013
Retail Media House sp. z o.o.
  • Partner (25% of shares worth PLN 1,250)
since Oct 6, 2026

Connections graph

Change history

EventDetails
Company founded

Partner (34% of shares worth PLN 1,700)

Retail Media House sp. z o.o.
Company founded

President of the Management Board, Partner (100% of shares worth PLN 5,000)

Sierra Holding sp. z o.o.
Company founded

President of the Management Board, Partner (33.33% of shares worth PLN 2,000)

Radicube sp. z o.o.
Company founded

Supervisory Board Member

Fast Growth S.A.
Left

Management Board Member

Sunport Ekomarina sp. z o.o.
Left

Management Board Member

Centrum Ochrony Środowiska sp. z o.o.
Shareholding changed

Partner: 33.33% of shares worth PLN 2,000 → 50% of shares worth PLN 3,000

Centrum Ochrony Środowiska sp. z o.o.
Shareholding changed

Partner: 24 shares worth PLN 1,200 → 40 shares worth PLN 2,000

Sunport Ekomarina 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

SignalDetails
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
Ewelina Anna Szczelińskaage 45
Karolina Szymanikage 41
Kinga Flisage 38
Anita Muśnickaage 39
Maciej Tadeusz Szczęśniakage 43