Warning lights
Signals from the annual accounts, the CBE and the Official Gazette, each with its threshold and source. No score, no verdict.
-
Two loss years in a row NBB
Negative result in 2023 and 2024.
Financials
Financial year 2024
SIDERK from Ukkel, company number BE0761387246, closed financial year 2024 with a result of € -6,908 after tax. For that financial year SIDERK recorded a gross margin of € -710 and equity of € 1,305. Compared with financial year 2023, the result moved from € -9,684 to € -6,908. The company made a loss. The buffer shrank hard: equity is 84 % below last year. High debts against a small own buffer. The most recent annual accounts were filed with the National Bank of Belgium on September 24, 2025.
€ 1,305
▼ 84% vs 2023
Assets minus debts, by the books. What is left if everything were sold and paid today.
€ -6,908
▲ 29 % less loss than in 2023
Profit after tax over the fiscal year.
€ 3,303
▼ 35% vs 2023
Cash and bank balances on the last day of the fiscal year.
Loss, nothing to pay out
Reserves fell to € -695.
People and assets in 2024
≈ 1
No payroll staff. One director, so that person most likely runs the business.
Debts at end 2024
None
No bank loans on the last day of the fiscal year.
€ 42,981
▲ 30% vs 2023
Supplier invoices still open on the last day of the fiscal year.
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| 2021 | 2022 | 2023 | 2024 | Change 2023 → 2024 | |
|---|---|---|---|---|---|
| Gross margin | € 23,752 | € 5,442 | € -2,958 | € -710 | ▲ € 2,248 |
| Profit after taxes | € 16,916 | € -1,020 | € -9,684 | € -6,908 | ▲ € 2,776 |
| Equity | € 18,916 | € 17,896 | € 8,213 | € 1,305 | ▼ 84% |
| Total debts | € 35,800 | € 55,933 | € 40,503 | € 50,614 | ▲ 25% |
| Cash | € 6,757 | € 8,853 | € 5,117 | € 3,303 | ▼ 35% |
| Retained profit | € 16,916 | € 15,896 | € 6,213 | € -695 | ▼ € 6,908 |
| Balance sheet total | € 54,716 | € 73,830 | € 48,716 | € 51,919 | ▲ 7% |
Key figures of SIDERK, fiscal years 2021 to 2024, from the annual accounts filed with the National Bank of Belgium.The annual account for fiscal year 2025 has not been filed yet; it was expected before 31 July 2026.
What happened to SIDERK?
What happened at SIDERK in recent years, according to the Belgian Official Gazette, the CBE and the National Bank:
- New annual accounts for financial year 2024: loss of € 6,908. filed late Source: NBB ↗
- New establishment in Overijse. KBO
- Start of the company according to the CBE. KBO
In short
From € 16,916 profit in 2021 to € 6,908 loss in 2024.
Paid € 3,257 in corporate taxes since 2021.
Best year ever: 2021, with € 16,916 profit.
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De Lijn 8 June 2026 New annual account 2025
filed on 8 June 2026
What was left
€ 20 k ▼ 91%
Money in the bank
€ 178 k ▼ 98%
Open the dossier →
NMBS 8 June 2026 New annual account 2025 What was left ▼ 80%
bpost 18 May 2026 New annual account 2025 What was left from loss to profit
Management
Behind SIDERK is Andrzej LAPINSKI. Andrzej LAPINSKI is also behind CABOX.
Directors
According to the 2024 annual accounts
Establishments
Establishment units
Physical locations of this company
Balkanstraat 7 box 4
1180 Ukkel
Brusselsesteenweg 315 box B
3090 Overijse
Active since 8 January 2021
Who else lives here?
A building full of entrepreneurs or one very busy letterbox? Another 1 companies are registered at this address.
All companies at this address →What is an establishment unit? An establishment unit is a geographically identifiable place where activities of the enterprise are carried out.
Details
- Company number
- 0761.387.246
- VAT number
- BE 0761.387.246
- Registered office
- Balkanstraat 7 bus 4, 1180 Ukkel
- Names & denominations
- SIDERK
- Enterprise type
- Rechtspersoon
- Legal form
- Private limited company
- Legal situation
- Normale toestand
- Start date
- 8 January 2021
- Peppol
- Active · Active since 19 Dec 2025
- Activities · NACE
Schrijnwerk
Installatie van isolatie
Glaszetten
Isolatiewerkzaamheden