
Overview
Sierant was founded in 1984 in Piotrków Trybunalski by Stanisław and Aldona Sierant. For 30 years, the company has specialized in producing and selling window shading systems, including facade blinds, aluminium, wooden and bamboo horizontal blinds, external roller shutters and insect screens, as well as providing advice and installation.
Industry
Offer
- External venetian blinds
- Aluminium blinds
- Wooden blinds
- Bamboo blinds
- External roller shutters
- Insect screens
- Window covering installation
Website technology
- Website
- WordPress
Public procurement
No recorded participation in tenders.
Sierant is the contractor in 4 public sector contracts, worth USD 70.89 in total. They were signed with 4 public buyers.
| Signed on | Subject | Amount | Public buyer | |
|---|---|---|---|---|
| Oct 20, 2026 | Zakup materiałów do katalogowania edukacyjnych zbiorów bibliotecznych | $24.71 | Muzeum Łazienki Królewskie w Warszawie | |
| Sep 28, 2026 | Brackets for wooden blinds for DPS | $10.54 | DOM Pomocy Społecznej | |
| Sep 17, 2026 | Roller blind spring | $8.50 | Wojewódzki Ośrodek Ruchu Drogowego w Bydgoszczy |
Authorized Representatives
Manner of representation
In the case of a one-person management board, the member of the management board makes declarations on behalf of the company. In the case of a management board consisting of two or more persons, joint action by two members of the management board or by one member of the management board jointly with a commercial proxy is required to make declarations on behalf of the company.
Ownership
| Owner | Shares | Share value | Stake |
|---|---|---|---|
Aldona Sierantage 67 | 500 | $6,753.11 | 25% |
Radosław Sierantage 50 | 400 | $5,402.49 | 20% |
Stanisław Sierantage 73 | 600 | $8,103.73 | 30% |
Katarzyna Sierant Oliwaage 46 | 400 | $5,402.49 | 20% |
Others | 100 | $1,350.62 | 5% |
Stanisław Sierant, Aldona Sierant and Radosław Sierant hold a combined 75% – the ownership structure indicates family control.
Beneficial owners
| Person | Rights |
|---|---|
Bank accounts
Registered as a VAT taxpayer on 1993-07-05.
58 1090 2590 0000 0001 3662 6654
46 1090 2705 0000 0001 2353 5022
48 1090 2705 0000 0001 2353 4986
Debt
No entries in the National Debtors Register (KRZ).
Public aid
32 public aid cases recorded, with a total value of $1,025,527.
| Grant date | Purpose | Gross amount | Granting body | |
|---|---|---|---|---|
| May 20, 2026 | De minimis aid (in accordance with Commission Regulation 2023/2831) | –– | Prezes Banku Gospodarstwa Krajowego | |
| Mar 13, 2026 | De minimis aid (in accordance with Commission Regulation 2023/2831) | –– | Prezes Zakładu Ubezpieczeń Społecznych | |
| Feb 17, 2026 | De minimis aid (in accordance with Commission Regulation 2023/2831) | –– | Prezes Banku Gospodarstwa Krajowego |
European Funds
| Start | Project | EU co-financing | Programme | |
|---|---|---|---|---|
| 2025-04-01 | Implementation of an innovative façade blind for self-assembly based on R&D results | $429.8K$429,834 | European Funds for Łódzkie 2021-2027 | |
| 2023-02-01 | Implementation in production of an external venetian blind with an innovative top box in the MKS system for self-assembly, with improved thermal properties | $176.2K$176,250 | Regional Operational Programme of the Łódź Voivodeship for 2014–2020 | |
| 2020-05-01 | Increasing the international market recognition of the Sierant brand | $9,647$9,647 | Operational Programme Smart Growth |
Regulatory authorisations
| Authority | Type | Status | |
|---|---|---|---|
| BDO register entry | Active |
Competitors
| Name | Revenue | Website | ||
|---|---|---|---|---|
| Ecoprof Radosław Sidorowiczsp. k. | $4,343,414.53 | ecoprof.pl | ||
| Komsta Stolarka Aluminiowasp. z o.o. | $3,130,759.14 | komsta.pl | ||
| Budtrans Systemy Aluminiowesp. z o.o. | $3,040,725.06 | budtrans.com | ||
| Jkaluminiumsp. z o.o. | $2,687,167.14 | jkaluminium.pl | ||
| Sobrimasp. z o.o. | $1,772,348.76 | sobrima.pl | ||
| Vobitechsp. z o.o. | $1,261,573.06 | vobitech.pl | ||
| Stryjeks Aluminiumsp. z o.o. | $855,375.03 | stryjeks.com.pl | ||
| Alustal Systemsp. z o.o. | $222,198.49 | alustalsystem.com | ||
| Silesia Balustradysp. z o.o. | $100,672.15 | silesiabalustrady.pl |
FAQ
Last updated: 2026-10-20