Overview
Financials
Revenue history (in m)
Filing timeliness
1 of 6 financial statements was filed late (for 2023, 4 days late), 1 not filed. All were audited by a statutory auditor.
- 202514/07/2026
- 202427/06/2025
- 202319/07/2024
- 2022not filed
- 202127/04/2022
- 202028/05/2021
Data and insights are generated automatically from financial statements – they may contain errors and are neither a credit assessment nor business advice.
Statistics
How the company ranks by revenue within its industry, region and across Poland in 2025.
Results vs industry
Industry
Public procurement
5 tenders recorded as contractor, with a total value of $313,381.
| Publication date | Subject | Amount | Contracting authority | |
|---|---|---|---|---|
| Dec 17, 2025 | Purchase of a representative car | $71,236$71,236 | Ambasada Rp w Tallinnie | |
| Sep 1, 2025 | Delivery of a brand-new 9-seat vehicle for Książnica Podlaska im. Łukasza Górnickiego in Białystok | $44,927$44,927 | Książnica Podlaska Im. Łukasza Górnickiego w Białymstoku | |
| Oct 23, 2024 | Delivery of a delivery van to Powiatowy Inspektorat Weterynarii w Sokółce | $44,072$44,072 | Powiatowy Inspektorat Weterynarii w Sokółce |
Authorized Representatives
Manner of representation
In the case of a multi-member management board, each member of the management board may represent the company independently.
Ownership
| Owner | Shares | Share value | Stake |
|---|---|---|---|
Elżbieta Bogumiła Sieńkoage 63 | 700 | $189,086.98 | 17.5% |
Jacek Sieńkoage 63 | 2,376 | $641,815.24 | 59.4% |
Mateusz Piotr Sieńkoage 32 | 462 | $124,797.41 | 11.55% |
Zofia Agata Sieńkoage 36 | 462 | $124,797.41 | 11.55% |
Jacek Sieńko, Elżbieta Bogumiła Sieńko, Mateusz Piotr Sieńko and Zofia Agata Sieńko hold a combined 100% – the ownership structure indicates family control.
Beneficial owners
| Person | Rights |
|---|---|
Bank accounts
Registered as a VAT taxpayer on 2002-12-30.
92 1020 1068 0000 1702 0339 9961
25 2130 0004 2001 0851 3012 0002
Debt
No entries in the National Debtors Register (KRZ).
Public aid
8 public aid cases recorded, with a total value of $1,026,963.
| Grant date | Purpose | Gross amount | Granting body | |
|---|---|---|---|---|
| Jul 31, 2020 | Aid compensating for the negative economic consequences of COVID-19, granted in limited amounts | $23,424$23,424 | Prezes Polskiej Agencji Rozwoju Przedsiębiorczości | |
| May 13, 2020 | Other crisis aid | $86,139$86,139 | STAROSTA POWIATU BIAŁYSTOCKIEGO | |
| May 4, 2020 | Aid compensating for the negative economic consequences of COVID-19, granted in limited amounts | $897.5K$897,482 | Polski Fundusz Rozwoju S.A. |
European Funds
| Start | Project | EU co-financing | Programme | |
|---|---|---|---|---|
| 2020-07-01 | Working capital grant for Sieńko i syn sp. z o.o. | $23,424$23,424 | Operational Programme Eastern Poland |
Regulatory authorisations
| Authority | Type | Status | |
|---|---|---|---|
 KNF | Consumer credit intermediary | Active | |
 BDO | Waste generation | Inactive |
Competitors
| Name | Revenue | Website | ||
|---|---|---|---|---|
| Stefczyk FinanseS.A. | $80,862,324.73 | pmsa.pl | ||
| Krajowy Integrator PłatnościS.A. | $26,378,247.19 | tpay.com | ||
| MbankS.A. | $22,569,311.90 | mbank.pl | ||
| Mobilum Paysp. z o.o. | $21,368,215.01 | pay.mobilum.com | ||
| BillbirdS.A. | $20,714,489.25 | billbird.pl | ||
| Aventus Groupsp. z o.o. | $16,703,994.24 | aventusgroup.pl | ||
| Giełda Dewizsp. z o.o. | $13,639,092.38 | gieldadewiz.pl | ||
| MelementsS.A. | $9,260,544.62 | melements.pl | ||
| Wealth Management Servicessp. z o.o. | $20,392.92 | wealthmanagementservices.eu | ||
| BWFsp. z o.o. | $0.00 | bwfinanse.pl |
Change history
| Date | Event | |
|---|---|---|
| 2026-03-16 | Switch to PKD 2025 (10 PKD 2007 codes → 10 PKD 2025 codes) | |
| 2026-03-02 | Address change (Wysockiego 65, 15-168, Białystok → Ul. Suraska 1/205, 15-093, Białystok) | |
| 2022-11-28 | PKD change (Removed: 20 codes) | |
| 2011-07-01 | PKD change (Added: 47.91.Z, 64.92.Z, 71.20.B) | |
| 2009-05-22 | Switch to PKD 2007 (24 PKD 1997 codes → 26 PKD 2007 codes) |
FAQ
Last updated: 2026-07-17