Data from the official company registers of 12 countries. Not an official register.

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TMBYS

ActiveSIREN number 522 138 940Simplified joint-stock company (SAS)Est. 201042.91 · Construction of water projectsGuyancourt, Île-de-France
Official record (Annuaire des entreprises) ↗
Age16 years
older than 47% of its sector
Same activity, France275live companies · 147th oldest
In Guyancourt2,035live companies
At this address125live companies incl. this one

In brief

TMBYS is a simplified joint-stock company (SAS) registered in France on 1 April 2010. It is 16 years old; 53% of the 275 live companies whose main activity is construction of water projects are older. Its registered office is in Guyancourt, Yvelines, Île-de-France, at an address shared with 124 other live companies.

Register details

Registered nameTMBYS
SIREN number522 138 940
Company typeSimplified joint-stock company (SAS)
Registered office1 Avenue Eugene Freyssinet, 78280 Guyancourt
Nature of business (NACE Rev. 2.1 (French NAF 2025))42.91 Construction of water projects
International sector (ISIC Rev.4)F · 42 Civil engineering

Timeline

Register events, newest first.

  • Incorporated

Register entries

From the register.

Incorporated1 April 2010

Construction of water projects in France

Live companies whose main activity is 42.91: 275 in total, median age 17 years, 8 incorporated in the past 12 months.

All 275 companies
This company's decadeOther decades
0204060801900s: 441900s1940s: 111940s1950s: 221950s1960s: 441960s1970s: 661970s1980s: 19191980s1990s: 44441990s2000s: 64642000s2010s: 73732010s2020s: 58582020s
Incorporated per year, still live
051015202011: 620112012: 82013: 720132014: 122015: 620152016: 82017: 520172018: 82019: 820192020: 52021: 920212022: 62023: 820232024: 112025: 1120252026: 8

Location

Registered office in Guyancourt, Yvelines, Île-de-France.

Live companies in Guyancourt2,035
Same activity in Guyancourt1
Live companies in Yvelines151,787
New in Guyancourt, past 12 months120

Also registered at this address

124 other live companies share this registered office; shown are those incorporated closest in time to this one.

Similar companies

Live companies with the same main activity, nearest first.

Compare all
AP
ASSOCIATION POUR LA MISE EN VALEUR DE LA VALLEE DE LA RIVIERE SAMANSA (A.M.V.V.S)Montigny-le-Bretonneux, Île-de-France
Number 843 734 658Est. 2012
SD
SI DU BASSIN DU HAUT OPTONLa Hauteville, Île-de-France
Number 200 038 719Est. 2013
SA
SI AMENAGEMENT RURAL DE LA REGION D'ARNOUVILLE LES MANTESArnouville-lès-Mantes, Île-de-France
Number 200 039 139Est. 2013
ET
EIFFAGE TRAVAUX MARITIMES ET FLUVIAUXVélizy-Villacoublay, Île-de-France
Number 484 771 845Est. 2006
EG
EIFFAGE GENIE CIVIL INTERNATIONAL & MARINEVélizy-Villacoublay, Île-de-France
Number 830 961 538Est. 2017
R
RIVERSIDEVillennes-sur-Seine, Île-de-France
Number 442 993 507Est. 2002

Sources

Register data: Insee, Sirene database of companies and establishments (Licence Ouverte / Open Licence 2.0), delivery of 21 October 2026. Territories: Insee, Code officiel géographique 2026. Industry names: European Union, EU Vocabularies (NACE Rev. 2.1). Context figures are computed by FirmsDB from these sources. This page is not an official register; check the company's entry in the French government business directory before relying on it.