Overview
Financials
Revenue history (in k)
From the notes
| Current income tax (CIT due) | $288,539 |
Filing timeliness
Financial statements were filed on time, on average 82 days early.
- 202501/06/2026
- 202430/04/2025
- 202319/04/2024
- 202203/04/2023
- 202105/05/2022
- 202025/06/2021
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, city, voivodeship and across Poland in 2025.
Results vs industry
Industry
Public procurement
14 tenders recorded as contractor: 6 national ($253,394) and 8 EU ($4,876,244).
| Publication date | Subject | Amount | Contracting authority | |
|---|---|---|---|---|
| Aug 7, 2026 | Supply of submersible drainage and slurry pumps and pump units for PGG S.A. branches for 18 months. | $3.1M$3,120,475 | Polska Grupa Górnicza S.A. | |
| Sep 12, 2025 | Supply of parts for portable pumps for the branches of Polska Grupa Górnicza S.A. - group No. 291-7 | $77,243$77,243 | Polska Grupa Górnicza S.A. | |
| Aug 14, 2025 | Submersible pump repair services for Południowy Koncern Węglowy S.A. | $389.4K$389,418 | Południowy Koncern Węglowy S.A. |
KSK has been a party to 1 case before the National Appeal Chamber (since 2015). In 1 case it joined the proceedings as a participant.
| Date | Subject of dispute | Outcome | Other party | |
|---|---|---|---|---|
| Mar 11, 2015 | Electronic auction | Dismissed | Tauron Wydobycie S.A. |
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 |
|---|---|---|---|
Grzegorz Ryszard Kostorzage 51 | 3 | $1,701.78 | 11.1111% |
Krzysztof Roman Kostorzage 59 | 3 | $1,701.78 | 11.1111% |
Michał Robert Kostorzage 61 | 9 | – | 25% |
Wojciech Damian Kostorzage 61 | 3 | $1,701.78 | 11.1111% |
Others | 36 | $10,210.70 | 66.6667% |
Beneficial owners
| Person | Rights |
|---|---|
Bank accounts
Registered as a VAT taxpayer on 1994-01-01.
10 1050 1331 1000 0023 3018 3225
92 1020 2401 0000 0902 0535 7035
56 1020 2401 0000 0602 0597 8145
Debt
No entries in the National Debtors Register (KRZ).
Real estate
| Type | Amount |
|---|---|
Land (incl. perpetual usufruct) | $49,455$49,455 |
Buildings and premises | $584.9K$584,930 |
Public aid
4 public aid cases recorded, with a total value of $50,295.
| Grant date | Purpose | Gross amount | Granting body | |
|---|---|---|---|---|
| Apr 28, 2021 | Other crisis aid | $38,164$38,164 | PREZYDENT MIASTA RUDA ŚLĄSKA | |
| Sep 20, 2020 | Aid compensating for the negative economic consequences of COVID-19, granted in limited amounts | $3,875$3,875 | Prezes Zakładu Ubezpieczeń Społecznych | |
| May 30, 2020 | Aid compensating for the negative economic consequences of COVID-19, granted in limited amounts | $4,794$4,794 | Prezes Zakładu Ubezpieczeń Społecznych |
Regulatory authorisations
| Authority | Type | Status | |
|---|---|---|---|
| BDO register entry | Active |
Competitors
| Name | Revenue | Website | ||
|---|---|---|---|---|
| Grupa Powen-WafapompS.A. | $33,392,009.88 | powen.com.pl | ||
| Przedsiębiorstwo Produkcji Sprężarek Airpolsp. z o.o. | $18,645,580.75 | airpol.com.pl | ||
| Zakład Techniki Próżniowej TeproS.A. | $11,739,741.06 | tepro.pl | ||
| Kielecka Fabryka Pomp BiałogonS.A. | $6,706,908.95 | kfp-bialogon.com.pl | ||
| Metalchem - WarszawaS.A. | $6,573,022.33 | metalchemsa.com.pl | ||
| TofamaS.A. | $1,527,324.53 | tofama.eu | ||
| Eko-Plussp. z o.o. | $714,247.46 | eko-plus.com | ||
| Falvesp. z o.o. | $323,494.92 | falve.pl | ||
| Komprexsp. z o.o. | $341,085.22 | komprex.pl | ||
| Fervorsp. z o.o. | $274,067.17 | fervor.eu |
Change history
| Date | Event | |
|---|---|---|
| 2020-01-14 | Name change ("ksk" → Ksk) | |
| 2020-01-14 | PKD change (Removed: 20 codes) | |
| 2013-11-08 | Address change (Chryzantem 23, 41-700, Ruda Śląska → Szyb Walenty 101, 41-700, Ruda Śląska) | |
| 2010-01-25 | Switch to PKD 2007 (9 PKD 1997 codes → 30 PKD 2007 codes) | |
| 2006-01-20 | Share capital increase (27,000.00 PLN → 56,700.00 PLN) |
FAQ
Last updated: 2026-06-02