Warning lights
Signals from the annual accounts, the CBE and the Official Gazette, each with its threshold and source. No score, no verdict.
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Busy address KBO
13 other companies have their registered office at the same address; threshold 10.
Financials
Financial year 2025
Institut interuniversitaire des Silicates, Sols et Matériaux from Mons, company number BE0413106271, closed financial year 2025 with a result of € 9,906 after tax. For that financial year Institut interuniversitaire des Silicates, Sols et Matériaux recorded revenue of € 7.3 million and equity of € 1.4 million. Compared with financial year 2024, the result moved from € -162,563 to € 9,906. Profitable, and profit is growing. The company holds a healthy buffer. Debts are under control. The most recent annual accounts were filed with the National Bank of Belgium on July 27, 2026.
€ 1.4 million
▼ 40% vs 2024
Assets minus debts, by the books. What is left if everything were sold and paid today.
€ 9,906
▲ still € 162,563 loss in 2024
Profit after tax over the fiscal year.
€ 555,722
▲ 70% vs 2024
Cash and bank balances on the last day of the fiscal year.
People and assets in 2025
19
▼ 1.2 vs 2024
Average over the fiscal year, from the social balance sheet.
€ 1.7 million
▼ 6% vs 2024
€ 88,600 per full-time equivalent. Payroll staff only. What the director pays themselves is already netted into the gross margin and is not shown separately in the accounts.
Debts at end 2025
None
No bank loans on the last day of the fiscal year.
€ 136,161
▲ 11% vs 2024
Supplier invoices still open on the last day of the fiscal year.
€ 234,581
▼ 12% vs 2024
Taxes, VAT and social contributions still to pay.
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| 2022 | 2023 | 2024 | 2025 | Change 2024 → 2025 | |
|---|---|---|---|---|---|
| Revenue | € 7,717,102 | € 7,745,368 | € 7,030,290 | € 7,347,679 | ▲ 5% |
| Gross margin | € 1,696,460 | € 1,393,022 | € 1,636,463 | € 1,722,541 | ▲ 5% |
| Profit after taxes | € 1,402 | € -352,535 | € -162,563 | € 9,906 | ▲ € 172,469 |
| Equity | € 776,603 | € 650,506 | € 2,369,094 | € 1,431,081 | ▼ 40% |
| Total debts | € 3,833,090 | € 3,736,406 | € 3,792,223 | € 3,731,754 | ▼ 2% |
| Cash | € 560,188 | € 336,574 | € 327,319 | € 555,722 | ▲ 70% |
| Retained profit | € 65,030 | € -287,505 | € -450,068 | € -440,162 | ▲ € 9,906 |
| Balance sheet total | € 4,609,693 | € 4,386,912 | € 6,161,317 | € 5,162,835 | ▼ 16% |
| Employees (FTE) | 20.9 | 19.9 | 20.2 | 19 | ▼ 1.2 |
Key figures of Institut interuniversitaire des Silicates, Sols et Matériaux, 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 Institut interuniversitaire des Silicates, Sols et Matériaux?
What happened at Institut interuniversitaire des Silicates, Sols et Matériaux in recent years, according to the Belgian Official Gazette, the CBE and the National Bank:
- New annual accounts for financial year 2025: profit of € 9,906. Source: NBB ↗
- New establishment in Mons. KBO
- New establishment in Bertrix. KBO
- Start of the company according to the CBE. KBO
In short
From € 1,402 profit in 2022 to € 9,906 profit in 2025.
Paid € 1,393 in corporate taxes since 2022.
Best year ever: 2025, with € 9,906 profit.
On average € 90,700 of value added per employee in 2025.
A new publication or filing at Institut interuniversitaire des Silicates, Sols et Matériaux? We notify you, reason included.
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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 Institut interuniversitaire des Silicates, Sols et Matériaux are Christoph Mattheeuws, David Charlet, Véronique Feldheim, Marie-George Olivier, Rony Snyders and Michel Lemaire. Christoph Mattheeuws is also behind INSTITUT NATIONAL DES SILICATES and Centre de Recherches de l'Industrie Belge de la Ceramique. Véronique Feldheim is also behind INSTITUT NATIONAL DES SILICATES.
Directors
According to the 2025 annual accounts
Christoph Mattheeuws
Director
Also active at: INSTITUT NATIONAL DES SILICATES, Centre de Recherches de l'Industrie Belge de la Ceramique
David Charlet
Director
Marie-George Olivier
Director
Rony Snyders
Director
Michel Lemaire
Chairman of the board
Also active at: INSTITUT NATIONAL DES SILICATES, Centre de Recherches de l'Industrie Belge de la Ceramique, LA FERME DU COLOMBIER
Maïté Dufrasne
Director
Also active at: CENTRE DE RESSOURCES TECHNOLOGIQUES EN CHIMIE, EURO-MULTITEL
Michel Voué
Director
Establishments
Establishment units
Physical locations of this company
Av. du Gouverneur E. Cornez 4
7000 Mons
Rue de la Bruyère 31
6880 Bertrix
Active since 29 July 1994
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 →Institut interuniversitaire des Silicates, Sols et Matériaux same network
€ 6.7 million revenue · 2025
FEDERATION DES INDUSTRIES CERAMIQUES DE BELGIQUE, en néerlandais VERBOND DER KERAMISCHE NIJVERHEID VAN BELGIE
Belgian Ceramic Society
Centre de Recherches de l'Industrie Belge de la Ceramique same network
€ 1.4 million revenue · 2025
EUROPEAN CERAMIC SOCIETY
+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
- 0413.106.271
- VAT number
- BE 0413.106.271
- Registered office
- Av. du Gouverneur E. Cornez 4, 7000 Mons
- Names & denominations
- Institut interuniversitaire des Silicates, Sols et Matériaux · INISMa
- Enterprise type
- Rechtspersoon
- Legal form
- Non-profit association
- Legal situation
- Normale toestand
- Start date
- 19 March 1973
- Peppol
- Active · Active since 14 Nov 2025
- Contact
- [email protected]
- Activities · NACE
Overig speur- en ontwikkelingswerk op natuurwetenschappelijk gebied
Speur- en ontwikkelingswerk op natuurwetenschappelijk gebied
Overig speur- en ontwikkelingswerk op natuurwetenschappelijk gebied