Insights

Strategic partnerships Geostock is a VINCI Construction Grands Projets subsidiary with global reach and long-standing expertise in underground storage solutions, presenting collaboration opportunities with suppliers and technology providers already embedded in large-scale energy projects.

Energy transition ties Recent partner announcements with Vallourec, Fluxys, and Air Liquide indicate active collaboration across piping, gas, and industrial gas sectors, signaling demand for storage infrastructure upgrades, maintenance services, and integration of new storage technologies.

Lifecycle services Geostock offers end-to-end services from consultancy to operation and maintenance for underground storage facilities, suggesting upsell potential in long-term service contracts, risk assessments, retrofit design, and monitoring solutions.

Diverse storage tech Expertise spans salt caverns, mined caverns, and porous reservoirs, opening opportunities to tailor offerings for varied geologies with multi-tech sensors, control systems, and simulation tools to optimize storage capacity and safety.

Growth indicators Revenue range of several tens of millions USD and a multi-region footprint imply scalable projects and potential for larger enterprise deals, especially through partnerships with energy operators seeking reliable underground storage capabilities.

Geostock Tech Stack

Geostock uses 8 technology products and services including Open Graph, Microsoft Active Directory, Lenis, and more. Explore Geostock's tech stack below.

  • Open Graph
    Content Management System
  • Microsoft Active Directory
    Identity And Access Management
  • Lenis
    Javascript Libraries
  • Office 365
    Office Suites
  • LinkedIn
    Online Community Software
  • Python
    Programming Languages
  • X-XSS-Protection
    Security
  • Cloudflare Bot Management
    Security

Geostock's Email Address Formats

Geostock uses at least 2 format(s):
Geostock Email FormatsExamplePercentage
First.Last@geostock.frJohn.Doe@geostock.fr
89%
FL@geostock.frJD@geostock.fr
4%
Last.First@geostock.frDoe.John@geostock.fr
3%
First.Middle@geostock.frJohn.Michael@geostock.fr
4%

Frequently Asked Questions

What is Geostock's phone number?

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You can contact Geostock's main corporate office by phone at . For more prospecting data, LeadIQ has access to up-to-date and accurate contact information within our platform. Find, capture, and sync contact data to your CRM and sales tools in one click.

What is Geostock's official website and social media links?

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Geostock's official website is geostockgroup.com and has social profiles on LinkedIn.

What is Geostock's SIC code NAICS code?

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Geostock's SIC code is 7299 - Miscellaneous Personal Services, Not Elsewhere Classified NAICS code is 211 - Oil and Gas Extraction.

How many employees does Geostock have currently?

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As of July 2026, Geostock has approximately 259 employees across 4 continents, including EuropeNorth AmericaAsia. Key team members include Ceo Of Geostock: P. B.President & Ceo: J. N.Deputy Ceo - Directeur Général Délégué: D. L.. Explore Geostock's employee directory with LeadIQ.

What industry does Geostock belong to?

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Geostock operates in the Oil and Gas industry.

What technology does Geostock use?

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Geostock's tech stack includes Open GraphMicrosoft Active DirectoryLenisOffice 365LinkedInPythonX-XSS-ProtectionCloudflare Bot Management.

What is Geostock's email format?

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Geostock's email format typically follows the pattern of First.Last@geostock.fr. Find more Geostock email formats with LeadIQ.

When was Geostock founded?

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Geostock was founded in 1965.
Geostock logo

Geostock

Oil and GasÎle-de-France, France201-500 Employees

Geostock is an international firm based in Rueil-Malmaison, Île-de-France, specializing in underground energy storage. With around five decades of experience, it delivers services across the full lifecycle of storage facilities—from concept and design to construction management, operation and maintenance—regardless of storage method or product. Its multi-skilled staff work with salt caverns, mined caverns and porous reservoirs, and the company operates globally as a subsidiary of Vinci Construction Grands Projets.

The company serves clients in the oil and gas sector by addressing technical and operational challenges throughout a storage project's life. A recent development is a January 2026 partnership with Vallourec to develop infrastructure solutions for the energy transition, underscoring its role in the evolving energy landscape.

Section iconCompany Overview

Phone number
SIC Code
7299 - Miscellaneous Personal Services, Not Elsewhere Classified
NAICS Code
211 - Oil and Gas Extraction
Founded
1965
Employees
201-500

Section iconFunding & Financials

  • $10M$25M

    Geostock's revenue is estimated to be in the range of $10M$25M

Section iconFunding & Financials

  • $10M$25M

    Geostock's revenue is estimated to be in the range of $10M$25M

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