Warning lights
Signals from the annual accounts, the CBE and the Official Gazette, each with its threshold and source. No score, no verdict.
-
Negative equity NBB
More debt than assets in 1 of the last 4 fiscal years.
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Tight liquidity NBB
Cash and receivables cover 39 % of short-term debt in 2025; threshold 65 %.
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Busy address KBO
13 other companies have their registered office at the same address; threshold 10.
Financials
Financial year 2025
SISSAU INVEST from Middelkerke, company number BE0567924904, closed financial year 2025 with a result of € -50,279 after tax. For that financial year SISSAU INVEST recorded a gross margin of € 37,602 and equity of € -7,020. Compared with financial year 2024, the result moved from € 30,666 to € -50,279. The company made a loss. More debts than assets. High debts against a small own buffer. The most recent annual accounts were filed with the National Bank of Belgium on July 23, 2026.
€ -7,020
▼ € 50,279 vs 2024
Assets minus debts, by the books. What is left if everything were sold and paid today.
€ -50,279
▼ still € 30,666 profit in 2024
Profit after tax over the fiscal year.
€ 100,184
▲ 256% vs 2024
Cash and bank balances on the last day of the fiscal year.
Loss, nothing to pay out
Reserves fell to € -25,620.
People and assets in 2025
€ 18,760
▼ 12% vs 2024
Book value of vehicles, furniture and equipment.
Debts at end 2025
€ 1.6 million
▼ 3% vs 2024
€ 14,000 is repaid this year. At this pace the long-term loan is gone in ≈ 114 years.
€ 25,144
▲ € 24,599 vs 2024
Supplier invoices still open on the last day of the fiscal year.
€ 22,543
Corporate tax and VAT still to pay. No wage debt: nothing outstanding to staff or social security.
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| 2022 | 2023 | 2024 | 2025 | Change 2024 → 2025 | |
|---|---|---|---|---|---|
| Gross margin | € 40,292 | € 57,782 | € 126,312 | € 37,602 | ▼ 70% |
| Profit after taxes | € 13,067 | € -24,332 | € 30,666 | € -50,279 | ▼ € 80,945 |
| Equity | € 36,925 | € 12,593 | € 43,259 | € -7,020 | ▼ € 50,279 |
| Total debts | € 347,196 | € 1,848,413 | € 1,654,148 | € 2,130,584 | ▲ 29% |
| Cash | € 1,167 | € 5,260 | € 28,155 | € 100,184 | ▲ 256% |
| Land & buildings | € 241,100 | € 1,698,645 | € 1,450,522 | € 1,426,897 | ▼ 2% |
| Retained profit | € 18,325 | € -6,007 | € 24,659 | € -25,620 | ▼ € 50,279 |
| Bank debt | € 163,000 | € 1,299,000 | € 1,639,269 | € 1,592,269 | ▼ 3% |
| Balance sheet total | € 389,248 | € 1,861,005 | € 1,697,407 | € 2,123,564 | ▲ 25% |
Key figures of SISSAU INVEST, fiscal years 2022 to 2025, from the annual accounts filed with the National Bank of Belgium.Next annual account (fiscal year 2026) expected before 31 July 2027.
What happened to SISSAU INVEST?
What happened at SISSAU INVEST in recent years, according to the Belgian Official Gazette, the CBE and the National Bank:
- New annual accounts for financial year 2025: loss of € 50,279 (▼ € 80,945 vs 2024). Source: NBB ↗
- Martine De Nie became a director. NBB
- Karel Sissau became a director. NBB
- New establishment in Middelkerke. KBO
- Start of the company according to the CBE. KBO
In short
From € 13,067 profit in 2022 to € 50,279 loss in 2025.
Paid € 6,467 in corporate taxes since 2022.
Best year ever: 2024, with € 30,666 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 SISSAU INVEST are Martine De Nie and Karel Sissau. The same people are also behind AGENCE SISSAU, SISSAU CONSTRUCT and DERMUL VASTGOED EN BEHEER. Martine De Nie is also behind IMMO DE Nie, DENIMMO, DENIBAUW and DE NIE CONSTRUCT. Karel Sissau is also behind SISSAU - IMMOBILIEN, MIDDELKERKSE IMMOBILIENMAATSCHAPPIJ, MIM-INVEST, COOPERATIEVE INVESTERINGS-EN BELEGGINGSMAATSCHAPPIJ VOOR VASTGOEDMAKELAARS and IMMO MID-WEST.
Directors
According to the 2025 annual accounts
Martine De Nie
Director
Also active at: IMMO DE Nie, DENIMMO, AGENCE SISSAU, DENIBAUW, SISSAU CONSTRUCT, DERMUL VASTGOED EN BEHEER, DE NIE CONSTRUCT
since 2023
Karel Sissau
Director
Also active at: SISSAU - IMMOBILIEN, AGENCE SISSAU, MIDDELKERKSE IMMOBILIENMAATSCHAPPIJ, SISSAU CONSTRUCT, DERMUL VASTGOED EN BEHEER, MIM-INVEST, COOPERATIEVE INVESTERINGS-EN BELEGGINGSMAATSCHAPPIJ VOOR VASTGOEDMAKELAARS, IMMO MID-WEST
since 2023
Establishments
Establishment units
Physical locations of this company
Zeedijk 127
8430 Middelkerke
Who else lives here?
A building full of entrepreneurs or one very busy letterbox? Another 13 companies are registered at this address.
All companies at this address →SISSAU - IMMOBILIEN same network
€ 1 million gross margin · 2025
DENIBAUW same network
€ -8,537 gross margin · 2025
SISSAU CONSTRUCT same network
€ 1.4 million gross margin · 2025
TRINITY
Vision I
+8 more
What is an establishment unit? An establishment unit is a geographically identifiable place where activities of the enterprise are carried out.
Details
- Company number
- 0567.924.904
- VAT number
- BE 0567.924.904
- Registered office
- Zeedijk 127, 8430 Middelkerke
- Names & denominations
- SISSAU INVEST
- Enterprise type
- Rechtspersoon
- Legal form
- Private limited company
- Legal situation
- Normale toestand
- Start date
- 19 November 2014
- Peppol
- Active · Active since 24 Nov 2023