Formation and structure·FindingConfirmed

Companies involved in a merger or demerger are more than eight times as likely to change the purpose in their articles

Of the 4,377 companies with a merger or demerger, 7.0% also had a change of business purpose within nine months, against 0.8% among similar companies.

New business purpose within nine months of the event

Both measurements combined · 4,377 companies

After a merger or demerger7.0%

Similar companies0.8%

8.4×

as often as among similar companies.

95% interval: 7.5× to 9.4×
Companies: 4,377
Measurements: 2, independent

Source: Hunch Lab, cohort study of 1,141,228 Belgian companies. Compared within sector, size and age, with companies active in the same period.hunchleads.com/en/lab

Does it hold up?

Each measurement uses different companies and a different period. A link only counts if it shows up in both.

Measurement	Period	With the event	Similar	Factor
Measurement 1	event Feb–Jun 2025, outcome Jul 2025–Mar 2026	9.1%	1.0%	9.5×
Measurement 2	event Jul–Dec 2025, outcome Jan–Sep 2026	5.4%	0.7%	7.3×

When does it happen?

Cumulative share by month after the first event. Half of the cases in the first year occur within 3 months.

By sector

The sectors with the most companies in the test, both measurements combined.

Sector	Companies	With the event	Similar	Factor
Wholesale and retail	671	6.6%	0.8%	7.9×
Professional services	662	10.0%	1.1%	9.0×

By size class

Full-time equivalents from the latest annual accounts. Employer: staff registered with the NSSO, headcount unknown.

Size	Companies	With the event	Comparable	Factor
No staff	2,075	6.6%	0.7%	9.6×
Employer, headcount unknown	1,110	6.2%	0.9%	7.2×

How often does this happen?

Belgian companies with the event, per month, over the last twelve complete months.

Merger or demerger672 a month on average

New business purpose571 a month on average

More on merger or demerger

7 other findings

FindingWith the eventSimilarFactorResult

Companies involved in a merger or demerger are more than five times as likely to change their nameFormation and structure5.1%1.0%5.2×Confirmed Companies involved in a merger or demerger are almost four times as likely to change their legal formFormation and structure1.99%0.55%3.6×Confirmed Companies involved in a merger or demerger are twice as likely to change their share capitalFormation and structure6.2%3.0%2.1×Confirmed Companies involved in a merger or demerger are twice as likely to open a site in another municipalityFormation and structure3.5%1.7%2.1×Confirmed Companies involved in a merger or demerger are 1.8 times as likely to open a new establishmentFormation and structure3.9%2.2%1.8×Confirmed

All findings on merger or demerger

Technical note

Methodology

Design: Retrospective cohort study
Population studied: 1,141,228 Belgian companies (the full business register)
Comparison group: Companies without the event that had another publication or event in the same entry period (active group), from the same stratum: NACE section, size class and age class; indirect standardisation
Cohorts: event Feb–Jun 2025, outcome Jul 2025–Mar 2026; event Jul–Dec 2025, outcome Jan–Sep 2026
Observed and expected: 305 cases, 36 expected
Factor (95% interval): 8.4× (7.5× to 9.4×)
Multiple testing: q < 0.001 (Benjamini-Hochberg)
Second measurement: p < 0.001
Other comparison groups: economically active companies 9.7× (8.6× to 11×); all companies 10× (9.2× to 12×)
Absolute difference: 6.1 percentage points; following 16 companies with the event yields one extra case
Size of the groups: active 120,261, economically active 370,738, all 1,141,228 companies
Strata: 131 strata of at least 300 companies (section × size × age; smaller strata merged)
Data up to: September 2026

Cite this findingFree to reuse with attribution (CC BY 4.0).

Hunch Lab (2026). Companies involved in a merger or demerger are more than eight times as likely to change the purpose in their articles. Data up to September 2026. https://hunchleads.com/en/lab/herstructurering-doelwijziging

Figures for this finding (CSV)

About Hunch Lab

Hunch Lab is the research programme of Hunch. Every finding is free to reuse with attribution. Questions are welcome.

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