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Data / France companies / Yvelines / Rosny-sur-Seine

Companies in Rosny-sur-Seine, Yvelines: 443 active companies by industry

Updated November 7, 2026. Source: INSEE, base Sirene des entreprises et de leurs établissements, on data.gouv.fr.

443 active companies have their head office in Rosny-sur-Seine, Yvelines, in the Sirene register stock dated 1 November 2026. 35 were registered in the last 12 months, 2 of them in October 2026, and 89 have employees.

The request: Every French company with head office in Rosny-sur-Seine, with SIREN, NAF code, registration date, address and employee band. $10 of work on sign-up, no card.

Get companies in Rosny-sur-SeineWatch new registrations in Rosny-sur-Seine

SpecStream is the live web data engine for teams and agents. It reads the Sirene register every month, and this page is that reading. Ask for the companies you track by industry, place or registration date and each new company arrives in your sheet, CRM, Slack or agent.

  • 443Active companies
  • 35Registered in the last 12 months
  • 2Registered in October 2026
  • 89 (20.1%)With employees
  • YvelinesDepartment
  • 78531Commune code

Registrations in the last 12 months

Active companies by the month their registration date falls in. The newest month is the last full month before the stock date.

MonthCompanies registered
October 20262
September 20261
August 20264
July 20262
June 20262
May 20262
April 20263
March 20264
February 20263
January 20265
December 20252
November 20255

Registrations per year

Companies registered in each year that are still active in the 1 November 2026 stock. Companies that closed earlier are not counted, so older years read low.

Year registeredActive companies
202230
202325
202442
202544
2026 so far29

By number of employees

The employee band the register holds for each company, as declared for its latest reference year.

EmployeesActive companiesShare
No employees or not declared35479.9%
1 to 9 employees7316.5%
10 to 49 employees143.2%
50 to 249 employees20.5%
250 employees or more00.0%

Biggest industries

A link opens the industry in this town where 80 or more companies list it.

IndustryNAF codeActive companies
Renting of land and other real estate68.20B108
Taxi operation49.32Z20
General masonry and building shell work43.99C14
Sale of cars and light motor vehicles45.11Z11
Renting of housing68.20A11
Fast-food restaurants56.10C10
Computer programming activities62.01Z9
Bakeries and bakery-pastry shops10.71C8
Business and other management consultancy activities70.22Z8
Maintenance and repair of light motor vehicles45.20A7
Fund management activities66.30Z7
Hairdressing96.02A7
Construction of detached houses41.20A6
Routine site preparation and earthworks43.12A5
Electrical installation in all premises43.21A5
Water and gas installation in all premises43.22A5
Traditional restaurants56.10A5
Computer systems and software consultancy62.02A5
Activities of head offices70.10Z5
Plastering43.31Z4
Floor and wall covering43.33Z4
Roof covering with tiles and slates43.91B4
Retail sale of food via stalls and markets47.81Z4
Landscape service activities81.30Z4
Legal vehicles for development programmes41.10D3
Construction of other buildings41.20B3
Heating and air conditioning installation43.22B3
Wood and PVC joinery installation43.32A3
Painting and glazing43.34Z3
Retail trade of motor vehicle parts and accessories45.32Z3
Other miscellaneous specialised retail sale47.78C3
Long-distance road freight transport49.41A3
Buying and selling of own real estate68.10Z3
Engineering and technical consultancy71.12B3
Other building completion and finishing43.39Z2
Other specialised construction activities43.99D2
Wholesale of miscellaneous industrial supplies and equipment46.69B2
Non-specialised wholesale trade46.90Z2
Event catering activities56.21Z2
Other activities auxiliary to financial services, except insurance and pension funding, n.e.c.66.19B2

Newest registered companies

Newest first. Only companies with a name that is clearly a business are listed; the counts above include every active company. Each row links to the public record.

CompanySIRENRegisteredNAF codeSource
Mega Food1319858141 November 202656.10Cannuaire-entreprises.data.gouv.fr
GK Batiment1312194387 October 202643.99Cannuaire-entreprises.data.gouv.fr
3V Capital10908091118 August 202666.19Bannuaire-entreprises.data.gouv.fr
RSS Istanbul Restaurant1084346894 August 202656.10Cannuaire-entreprises.data.gouv.fr
Ets.cavalli1084044923 August 202643.99Dannuaire-entreprises.data.gouv.fr
Apex Immobilier1080581086 July 202668.10Zannuaire-entreprises.data.gouv.fr
Groupe Grand Place10683968124 June 202670.10Zannuaire-entreprises.data.gouv.fr
Bati Expert Consulting1046299365 May 202674.90Aannuaire-entreprises.data.gouv.fr
Mvtc10502999529 April 202649.32Zannuaire-entreprises.data.gouv.fr
CBR Groupe10460900329 April 202643.12Aannuaire-entreprises.data.gouv.fr
Service Rapide1034586346 April 202645.32Zannuaire-entreprises.data.gouv.fr
LES Saveurs de l'Olivier10314404430 March 202647.81Zannuaire-entreprises.data.gouv.fr

Licence Ouverte / Open Licence 2.0 (Etalab), source INSEE. Counts are of active companies in the Sirene register stock dated 1 November 2026: commercial companies (SARL, SAS, SA and the like) and civil companies such as SCI property companies. Sole traders, associations and public bodies are not counted, and the register lists dormant holding and property companies as active, so a count is of companies on the register, not of trading businesses. A company is counted under its main activity (NAF rev. 2 code) and the commune of its head office; companies whose register entry holds no NAF rev. 2 code are in the totals only. "With employees" means the register holds an employee band of one or more. Industry titles are English renderings of the INSEE labels. Contains data from INSEE, reused under the Licence Ouverte 2.0. This page is not endorsed by INSEE. Free to reuse with credit to SpecStream under CC BY 4.0. Spot a wrong value? Write to [email protected] with the link to this page.