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 2 fiscal years.
-
Two loss years in a row NBB
Negative result in 2024 and 2025.
Financials
Financial year 2025
SIRIUS SECURITY from Brussel, company number BE1002244877, closed financial year 2025 with a result of € -54,120 after tax. For that financial year SIRIUS SECURITY recorded a gross margin of € 2 million and equity of € -40,642. Compared with financial year 2024, the result moved from € -16,522 to € -54,120. 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 September 9, 2026.
€ -40,642
▼ € 54,120 vs 2024
Assets minus debts, by the books. What is left if everything were sold and paid today.
€ -54,120
▼ 228 % more loss than in 2024
Profit after tax over the fiscal year.
€ 91,570
▲ € 89,457 vs 2024
Cash and bank balances on the last day of the fiscal year.
Loss, nothing to pay out
Reserves fell to € -70,642.
People and assets in 2025
€ 2.1 million
Payroll staff only. What the director pays themselves is already netted into the gross margin and is not shown separately in the accounts.
€ 2,744
Book value of vehicles, furniture and equipment.
Debts at end 2025
None
No bank loans on the last day of the fiscal year.
€ 10,362
▲ 192% vs 2024
Supplier invoices still open on the last day of the fiscal year.
€ 775,717
Taxes, VAT and social contributions still to pay.
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| 2024 | 2025 | Change 2024 → 2025 | |
|---|---|---|---|
| Gross margin | € -13,922 | € 2,034,921 | ▲ € 2 million |
| Profit after taxes | € -16,522 | € -54,120 | ▼ € 37,599 |
| Equity | € 13,478 | € -40,642 | ▼ € 54,120 |
| Total debts | € 5,952 | € 1,342,028 | ▲ € 1.3 million |
| Cash | € 2,113 | € 91,570 | ▲ € 89,457 |
| Retained profit | € -16,522 | € -70,642 | ▼ € 54,120 |
| Balance sheet total | € 19,430 | € 1,301,385 | ▲ € 1.3 million |
Key figures of SIRIUS SECURITY, fiscal years 2024 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 SIRIUS SECURITY?
What happened at SIRIUS SECURITY in recent years, according to the Belgian Official Gazette, the CBE and the National Bank:
- New annual accounts for financial year 2025: loss of € 54,120. filed late Source: NBB ↗
- Boleslaw Borivoje Kostic became a director. NBB
- New establishment in Brussel. KBO
- Start of the company according to the CBE. KBO
In short
From € 16,522 loss in 2024 to € 54,120 loss in 2025.
Paid € 399 in corporate taxes since 2024.
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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 SIRIUS SECURITY is Boleslaw Borivoje Kostic.
Directors
According to the 2025 annual accounts
Boleslaw Borivoje Kostic
Administrator-manager
since 2024
Establishments
Establishment units
Physical locations of this company
Emile Bockstaellaan 155
1020 Brussel
Emile Bockstaellaan 155 box 0
1020 Brussel
Active since 1 January 2024
Who else lives here?
A building full of entrepreneurs or one very busy letterbox? Another 2 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
- 1002.244.877
- VAT number
- BE 1002.244.877
- Registered office
- Emile Bockstaellaan 155, 1020 Brussel
- Names & denominations
- SIRIUS SECURITY
- Enterprise type
- Rechtspersoon
- Legal form
- Private limited company
- Legal situation
- Normale toestand
- Start date
- 14 November 2023
- Peppol
- Active · Active since 24 Nov 2025
- Activities · NACE
Opsporings- en particuliere beveiligingsdiensten