Turnover
≈ €140,000 estimated
The micro format states no turnover.
OPTERA
Overview
Lifetime
2 annual accounts with figures on one time axispeak €34,381 (2025)
€34,381▲ 499%
peak €22,261 (2025)
€22,261▲ 450%
peak €27,307 (2025)
€27,307▲ 441%
€65,465▲ 95.1%
Board2 names since 2024
2 directorsMERTENS Maarten Maria Joris Paul and 1 other
Documentsfilings and deeds
23-07-20268 days before the deadline
2025micro format
Gross margin from €5,741 to €34,381Result from €4,046 to €22,261Appointment: Annelies Mertens (director) 22-12Equity from €5,046 to €27,307Debts from €33,553 to €65,465Investments €26,126
Key points
from the 2025 annual accountsDebts
€65,465 71% of the balance sheet
Suppliers 45%Taxes and wages 27%Other 29%
Investments
€26,126 17.7 × depreciation
Green is investment, beige is depreciation. Machinery stands 172.3% higher than in 2024.
Checked score
68
Healthy
Financially stronger than 66% of micro companies in civil engineering (NACE 42)
Probability in this band: 0.55% to 1.5%
Bankruptcy probability within 12 months
0.9% Low
0%0.5%1.5%4%10%≥ 25%
The dashed line is the sector median: 0.8% across 1,866 companies (NACE 42, micro).
About 9 in 1,000 comparable companies go bankrupt within 12 months (an estimate).
Last 24 months
07-2025: 1.1%
08-2025: 1.1%● unchanged vs 07-2025
09-2025: 1.1%● unchanged vs 08-2025
10-2025: 1.1%● unchanged vs 09-2025
11-2025: 1.1%● unchanged vs 10-2025
12-2025: 1.2%▲ +0.1 percentage points vs 11-2025
01-2026: 1.2%● unchanged vs 12-2025
02-2026: 1.2%● unchanged vs 01-2026
03-2026: 1.3%▲ +0.1 percentage points vs 02-2026
04-2026: 1.3%● unchanged vs 03-2026
05-2026: 1.4%▲ +0.1 percentage points vs 04-2026
06-2026: 1.5%▲ +0.1 percentage points vs 05-2026
07-2026: 1.6%▲ +0.1 percentage points vs 06-2026highest value
08-2026: 0.9%▼ -0.7 percentage points vs 07-2026lowest value
09-2026: 0.9%● unchanged vs 08-2026lowest value
10-2026: 0.9%● unchanged vs 09-2026lowest value
11-2026: 0.9%● unchanged vs 10-2026lowest value
Financial strengthStrong
Score breakdown
raises risk
Founded in 2024
Size: total assets €92,771
lowers risk
Liquidity: current ratio 1.02, cash €29,051
Figures for financial year 2025 (filed on 23-07-2026)
Calculation
The band follows from the bankruptcy probability. 10 more points roughly halve it.
| 75-100 | Excellent | under 0.55% |
| 60-74 | Healthy | 0.55% to 1.5% |
| 45-59 | Fair | 1.5% to 4.2% |
| 25-44 | Weak | 4.2% to 15.0% |
| 0-24 | Critical | over 15.0% |
Where the company stands within its band depends half on the bankruptcy probability and half on how it does against its sector peers (NACE 42, micro). It does better than 34% of them on solvency, 52% on liquidity, 81% on profitability and 98% on growth.
The bankruptcy probability was computed on 08-11-2026 by the bankruptcy model of 2 October 2026, which learns from Belgian bankruptcies and reads the registers, the annual accounts and the Belgian Official Gazette.
The probability rests on the annual accounts with balance sheet date 31-12-2025.
Of the companies with a bankruptcy probability in the low class on 30-06-2025, 0.8% went bankrupt within twelve months.
Some facts cap the score, however low the probability. With negative or zero equity, a heavy loss, a special status in the KBO, one missing filing or accounts filed more than 90 days late, the score is Fair at most (59). With two missing filings, it is Weak at most (44). During a judicial reorganisation or at the company's end (bankruptcy, dissolution, liquidation), it is Critical at most (24).
Comparable companies, two years later
In July 2024, 7,976 companies had the same profile as OPTERA has now. Each dot stands for 20 companies, two years later.
94.3%
were still trading
1.8%
stopped another way
3.6%
went bankrupt
Another 0.3% stopped without a precise date, possibly only after those two years.
That fits the bankruptcy probability of OPTERA itself: 0.9% within 12 months.
Test of the method
The method was tested on the 497,447 companies of July 2024. Each company was given the bankruptcy share of the same profile a year earlier, in July 2023. The expectation was that 1.6% would go bankrupt within 24 months. In fact 1.7% went bankrupt.
| Group | Expected | Actual |
|---|---|---|
| 1 | 0.2% | 0.2% |
| 2 | 0.3% | 0.5% |
| 3 | 0.5% | 0.6% |
| 4 | 0.7% | 0.8% |
| 5 | 0.9% | 0.9% |
| 6 | 1.3% | 1.5% |
| 7 | 1.6% | 1.8% |
| 8 | 1.8% | 1.8% |
| 9 | 3.0% | 3.1% |
| 10 | 5.6% | 6.2% |
A company that went bankrupt had a higher expected share than one that kept going in 74.5% of comparisons. The level depends on the economy. In a year with more bankruptcies than the year before, the actual share is higher than the expected one.
This is an observation about 7,976 companies, not a prediction for OPTERA. The sector does not count, because the KBO no longer lists a sector for a company that has stopped. By sector, mostly the survivors would count, which would paint too rosy a picture.
Credit verdict
Credit of up to €1,500 on 30-day terms is acceptable
Liquidity is tight, with a current ratio of 1.02 (1.23 in 2024), below the usual 1.5. Short-term debt is 70.6% and cash 31.3% of total assets. 70.6% of the assets are financed with debt and provisions.
Credit check for an amount and term of your choice
Show the recommended maximum and see how the verdict changes with amount, term and advance.
The scores and ratios are Checked's own calculations, not a credit decision.
Signals
Five signals.
lowers riskraises riskneutral
neutral · Latest accounts filed on time
The financial year that closed on 31-12-2025 was due by 31-07-2026 and was filed on 23-07-2026, 8 days ahead of the deadline.
NBB · 2 filingsDeviation from the deadline
2025
8 days early
2024
99 days early
← before the deadline
after the deadline →
tick = median of all Belgian filingsring = median in the sector
The company filed its last 2 accounts on average 54 days before the deadline. In the sector (NACE 42), the median for financial year 2024 was 2 days before the deadline, and 41% of those companies filed late.
Searched, nothing found (2)
neutral · Next filing not due yet
The next financial year closes on 31-12-2026 and is due by 31-07-2027. Nothing is late today.
Companies Code · seven monthsWhere today falls in the filing period
09-11-2026 today31-12-2026 year end31-07-2027 deadline
Recent changes
Appointment: Annelies Mertens (director)
General meeting of 14-10-2025 · Gazette deed
Registered in the Peppol Directory
Reachable for e-invoices through 0208:1010799089
Incorporation
Founding capital of €1,000, 100 shares · Founder: MERTENS Maarten · Appointment: MERTENS Maarten (director) · published on 28-06-2024 · Gazette deed
First establishment
Begijnhof 7, Aarschot
Comparable companies
same main activity, similar in size and age| Company | ||||
|---|---|---|---|---|
| OPTERA Aarschot | €92,771 | €34,381 | 29.4% | - |
| Rio Mor Schoten | €71,254 | €37,766 | 59.4% | - |
| DGN ENERGY Genk | €101,042 | €56,266 | 40.5% | - |
| Thomas Vermeiren Merksplas | €97,232 | €25,692 | 15.6% | - |
| KVtech Ittre | €84,529 | €27,752 | 21.6% | - |
| LEO Tessenderlo-Ham | €39,462 | €29,108 | 42.7% | - |
| B-PRO Retie | €136,215 | €73,655 | 57.9% | - |
These companies have the same main activity as OPTERA: civil engineering (NACE 42212). They are comparable in size and age: total assets between €39,500 and €136,000, founded between 2023 and 2024.
Official details
Source: KBO- Status
- Active since 26-06-2024Normal situation
- Activity
- Civil engineeringNACE 42212and 4 others
- Establishment unit
- 2.361.660.2853200 Aarschot, since 26-06-2024
- Financial year end
- 31 December
- Peppol
- Reachable since 01-01-2025
Annual accounts 2025
- €34,381▲ 499%
- €22,261▲ 450%
- €27,307▲ 441%
- €92,771▲ 140%
- Filing
- Filed on 23-07-2026, 8 days before the end of the filing period
Insights on OPTERA
OPTERA has been active since 2024 and the Belgian Official Gazette contains no insolvency or warning signals. The 2025 annual accounts show equity of €27,307 and a net result of €22,261.
Its solvency ranks better than 33% of 1,263 sector peers (NACE 42, financial year 2025). The computed 12-month bankruptcy probability is 0.9% (low).
Sources: KBO register, filings at the National Bank, Belgian Official Gazette.
Financials
Annual accounts 2025
micro format, filed on 23-07-2026, 8 days before the deadline€34,381
▲ 499%
€30,652
▲ 487%
€22,261
▲ 450%
€1,034
▼ 85.3%
29.4%
▲ 16.4 percentage points
1.02
▼ 0.22
Turnover and EBIT margin are not published. The micro format does not require them. The turnover shown is an estimate from the gross margin.
Turnover ≈ €140,000. Estimated: probably between €83,000 and €250,000.
Balance sheet
balance sheet total €92,771 on 31-12-2025What the company ownsHow it is paid for
in euro
in euro
Position in the sector
29.4%
Higher than 33% of 1,263 companies in 2025.
1.02
Higher than 23% of 1,222 companies in 2025.
24.0%
Higher than 77% of 1,227 companies in 2025.
OPTERA
Middle half of the sector
80% of the sector
Micro accounts in civil engineering (NACE 42)
Net result: middle half · Equity: middle half · Balance sheet total: middle half · Working capital: bottom quarter
Filed annual accounts
as filed with the National Bank, click a year to choose it| Line | Trend | 2025 | 2024 |
|---|---|---|---|
| Balance sheet: assets | |||
20/58 |
92,771 | 38,599 | |
21/28 |
26,273 | 1,622 | |
22/27 |
26,273 | 1,622 | |
23 |
4,415 | 1,622 | |
24 |
21,858 | - | |
29/58 |
66,498 | 36,977 | |
3 |
15,734 | 15,177 | |
30/36 |
15,734 | 15,177 | |
40/41 |
20,457 | 8,366 | |
40 |
17,942 | 6,322 | |
41 |
2,515 | 2,044 | |
54/58 |
29,051 | 12,248 | |
490/1 |
1,256 | 1,185 | |
| Balance sheet: equity and liabilities | |||
10/49 |
92,771 | 38,599 | |
10/15 |
27,307 | 5,046 | |
10/11 |
1,000 | 1,000 | |
13 |
26,307 | 4,046 | |
133 |
26,307 | 4,046 | |
17/49 |
65,465 | 33,553 | |
42/48 |
65,465 | 29,953 | |
44 |
29,365 | 9,528 | |
440/4 |
29,365 | 9,528 | |
45 |
17,438 | 1,104 | |
450/3 |
9,438 | 1,104 | |
454/9 |
8,000 | - | |
47/48 |
18,661 | 19,320 | |
492/3 |
0 | 3,600 | |
| Income statement | |||
9900 |
34,381 | 5,741 | |
630 |
1,474 | 293 | |
631/4 |
1,869 | - | |
640/8 |
385 | 227 | |
9901 |
30,652 | 5,222 | |
75/76B |
0 | - | |
75 |
0 | - | |
65/66B |
58 | 71 | |
65 |
58 | 71 | |
9903 |
30,594 | 5,150 | |
67/77 |
8,334 | 1,104 | |
9904 |
22,261 | 4,046 | |
9905 |
22,261 | 4,046 | |
| Appropriation of the result | |||
9906 |
22,261 | 4,046 | |
691/2 |
22,261 | 4,046 | |
6921 |
22,261 | 4,046 | |
| Document | |||
The notes to these accounts have 6 items, including the statement of assets and debts, the cost breakdown and rights and commitments. You find them in the accounts filed with the NBB.
Source: Annual accounts 2025 at the NBB, filed on 23-07-2026.
Filings
each dot is a set of accounts, on the day it reached the National BankKey figures and ratios
per financial year, computed from the annual accounts| Line | Trend | 2025 | 2024 |
|---|---|---|---|
| 32,126 | 5,514 | ||
| 23,735 | 4,339 | ||
| 26,126 | 1,914 | ||
| 16,803 | - | ||
| 1,034 | 7,024 | ||
| 29.4% | 13.1% | ||
| 1.02 | 1.23 | ||
| 0.78 | 0.73 | ||
| 2.40 | 6.65 | ||
| 81.5% | 80.2% | ||
| 24.0% | 10.5% | ||
| over 100 | 77.33 |
A Belgian filing has no cash-flow statement. Cash flow is therefore an approximation, derived from the income statement. Investment is the acquisitions in the notes and, without them, the balance-sheet move.
Investments
fixed assets acquired| Item | 2025 | 2024 |
|---|---|---|
| Tangible fixed assets | €26,126 | €1,914 |
| €1,474 | €293 |
Source: notes to the 2024 to 2025 annual accounts (statement of fixed assets)
Insights on OPTERA
The operating result for 2025 is nearly 5.9 times that of 2024.
Debt's share of the balance-sheet total falls from 86.9% to 70.6%. Equity and debt are higher.
Board & ownership
Board
2 directors, no change since 2025Director
appointed by deed of 28-06-2024
term without a fixed end
also on the board of 1 other company
listed in the 2025 annual accounts, filed on 23-07-2026
Director (not named in the articles)
since 14-10-2025
term without a fixed end
listed in the 2025 annual accounts, filed on 23-07-2026
- Signing authorityThe articles say who may bind the company, for example by signing a contract.
- Each director alonedeed of 28-06-2024
Mandates through the years
2 names, the dashed line is todayMERTENS Maarten Maria Joris Paul
Director
Director
Annelies Mertens
Director (not named in the articles)
Director (not named in the articles)
Board
Mandates as a list
- MERTENS Maarten Maria Joris Paul
- Director, appointed by deed of 28-06-2024, still in office
- Annelies Mertens
- Director (not named in the articles), from 14-10-2025 to date
Control
Founder
MERTENS Maarten
This company
OPTERA
Equity €27,307
Profit €22,261 in 2025
Capital
- Contribution
- €1,000
- Shares
- 100
- Contribution per share
- €10
- Equity per share
- €273 in 2025
- Source
- deed of 28-06-2024
Articles of association
deed of 28-06-2024 (in Dutch)- DurationMost companies exist for an unlimited period, until they are dissolved.
- Unlimited
- Board ruleThese rules set how the board is made up, meets and takes decisions.
- “Geboekt op algemene kosten los van representatie-,reis- en verplaatsingskosten, algemene vergadering beslist kosteloos of niet”
- Transfer restrictionThis rule says whether shareholders may sell their shares freely or need approval first.
- “Procedure- en expertisekosten helft overdrager helft koper(s) naar evenredigheid verworven aantal bij meer kopers, erfgenamen en…”
- Annual meetingThe shareholders approve the annual accounts, among other things, at the annual meeting.
- First Friday of June at 18:00
- Statutory auditorA statutory auditor is a registered auditor who checks the annual accounts. Small companies need not have one. According to the deed, the legal criteria do not require one here.
- No statutory auditor
Shareholders
At incorporation
deed of 28-06-2024 ↗
- MERTENS Maarten 100 shares (100%) · €1,000
Network & group
No group
OPTERA has no parent and no holdings in its annual accounts.
Connections & network
1 connected companyThe connected companies are in the list below.
This company
Company
Director
Shareholding
+N: links not shown yet
Click a node to look further, drag to arrange, zoom with the mouse wheel.
Linked via shared directors
ECO MOUNT
via MERTENS Maarten Maria Joris Paul · Director (not named in the articles) · deed of 23-03-2023
Founded in 2023 · total assets €4,303 (2025) · negative equity
→
Timeline
Timeline
6 events since 2024Board
Filings
Establishments
202420252026
Deadline for the 2026 accounts: 31-07-2027
2026
Annual accounts 2025 filed NBBmicro format · 8 days before the deadline
2025
- General meeting, 14-10-2025
- Director appointment, Annelies Mertens (director (not named in the articles))
Annual accounts 2024 filed NBBmicro format · 99 days before the deadline
Registered in the Peppol Directory Reachable for e-invoices through 0208:1010799089
2024
IncorporationFounding capital of €1,000, 100 shares · Founder: MERTENS Maarten · Appointment: MERTENS Maarten (director) · published on 28-06-20245 points ▸
- Founder, MERTENS Maarten
- Registered office clause, Begijnhof 7, 3200 Aarschot, mentioned twice in the deed
- Founding capital, €1,000, 100 shares
- Board rule, 1
- Director appointment, MERTENS Maarten
- The deed holds 5 more points.
First establishment Begijnhof 7, Aarschot
Sources: Publications in the Belgian Official GazetteFilings with the National Bank
History
Company details
Identity
- Enterprise number
- 1010.799.089
- VAT number
- BE 1010.799.089
- Peppol ID
- 0208:1010799089
- Other Peppol ID
- 9925:BE1010799089
- Legal form
- Private limited company
- Status
- Active, normal situation
- Founded
- 26-06-2024
- Financial year
- ends on 31 December
- Annual meetingThe shareholders approve the annual accounts, among other things, at the annual meeting.
- First Friday of June at 18:00deed of 28-06-2024 (in Dutch)
- Peppol
- Reachable since 01-01-2025Follow this company and you will hear the next morning if it leaves the Peppol register.
- Name
- OPTERA in Dutch
- Entity type
- Legal entity
- DurationMost companies exist for an unlimited period, until they are dissolved.
- Unlimiteddeed of 28-06-2024 (in Dutch)
- Registered office clauseThe articles name the region of the registered office. The language of official documents depends on that region, among other things.
- “Vlaams Gewest”deed of 28-06-2024 (in Dutch)
Activities
NACEBEL 202542212
Civil engineering main activity
43120
Site preparation
51100
Passenger air transport
Codes under NACEBEL 2008
42212
Civil engineering main activity
30300
Manufacture of other transport equipment
43120
Site preparation
51100
Passenger air transport
52230
Warehousing and support activities for transportation
- PurposeThe purpose describes the activities the company may carry out under its articles.
- “Het uitvoeren van onderhoud op bestaande installaties en het installeren van nieuwe installaties van regenwaterrecuperatie en…”deed of 28-06-2024 (in Dutch)
43 activities
- Het uitvoeren van onderhoud op bestaande installaties en het installeren van nieuwe installaties van regenwaterrecuperatie en dompelpompinstallaties
- Adviesverlening van het ontwerp van riolering.
- Diensten in verband met de luchtvaart
- Verkoop-, verhuur en lease van luchtvaartuigen
- Vervaardiging van luchtvaartuigen voor vervoer van goederen of passagiers
- Vervaardiging en assemblage van onderdelen en accessoires van luchtvaartuigen
- Activiteiten in verband met deltavliegen, zweefvliegen, vliegen met ULM’s, met sport-of toerisme vliegtuigen (inclusief het geven van les in voormelde materie)
- Personenvervoer door de lucht
- De aanleg van waterdistributienetten en rioleringen
- Projectontwikkeling voor woningbouw, voor de nieuwbouw van individuele woningen of voor renovatiewerken, voor de bouw van appartementsgebouwen, voor kantoorbouw en voor infrastructuurwerken
- Het toezien op de bouwwerkzaamheden (ruwbouw, installatie, afwerking,…)
- Technische studies en ingenieursactiviteiten
- De uitwerking en realisatie van projecten op het gebied van de elektriciteit en elektronica, mijnbouw, chemie, machine- en werktuigbouw, industriële systeemontwikkeling, veiligheid
- De uitwerking van projecten op het gebied van klimaatbeheersing, koeltechniek, zuivering en voorkomen van pollutie, akoestiek
- Overige zakelijke dienstverlening
- Afvalwaterinzameling en -behandeling
- Handel in eigen onroerend goed
- Verhuur en exploitatie van eigen of geleased niet-residentieel onroerend goed exclusief sociale woningen
- Verhuur en exploitatie van sociale woningen
- Verhuur en exploitatie van eigen of geleased niet-residentieel onroerend goed exclusief terreinen
- Verhuur en exploitatie van terreinen
- Bemiddeling bij aankoop, verkoop en verhuur van onroerend goed voor een vast bedrag of op contractbasis
- Beheer van residentieel onroerend goed voor een vast bedrag of op contractbasis
- Beheer van niet residentieel onroerend goed voor een vast bedrag of op contractbasis
- Bosbouw, tuinbouw en de exploitatie van bossen
- Vervaardiging van dranken
- Vervaardiging van producten van metaal, exclusief machines en apparaten
- Vervaardiging van elektrische apparatuur
- Vervaardiging van machines, apparaten, producten (samenstel) en werktuigen, n.e.g.
- Vervaardiging van meubelen
- Reparatie en installatie van machines en apparaten
- Groot- en detailhandel in en onderhoud en reparatie van motorvoertuigen en motorfietsen
- Groothandel en handelsbemiddeling, met uitzondering van de handel in motorvoertuigen en motorfietsen
- Eet- en drinkgelegenheden
- Ontwerpen en programmeren van computerprogramma’s, computerconsultancy- activiteiten en aanverwante activiteiten
- Exploitatie van en handel in onroerend goed
- Rechtskundige en boekhoudkundige dienstverlening
- Activiteiten van hoofdkantoren; adviesbureaus op het gebied van bedrijfsbeheer
- Reclamewezen en marktonderzoek
- Overige gespecialiseerde wetenschappelijke en technische activiteiten
- Verhuur en lease
- Creatieve activiteiten, kunst en amusement
- Reparatie van computers en consumentenartikelen
Registered office and establishments
1 establishment| Establishment | Since | Unit number |
|---|---|---|
| Begijnhof 7 registered office 3200 Aarschot | 26-06-2024 | 2.361.660.285 |
Buildings and parcels at the address
- Ground area
- 150 m²
- Buildings
- 90 m²
- Volume, LiDAR
- 831 m³
- Tallest building
- 14.5 m
Buildings to scale, each on its own parcel
Parcels
| Cadastral parcel | Area | Buildings | Height / floors |
|---|---|---|---|
| 24662H0123/00F000 | 150 m² | 1 · 90 m² | 14.5 m · 4 |
Invoicing and payment
Check the withholding obligation If you pay this company for building or cleaning work, check before every payment whether you must withhold part of the invoice. Use the enterprise number 1010.799.089