What 400 Partners does

400 Partners is a Paris-based interim management (management de transition) firm operating a curated network of 400+ vetted executive managers and an intermediation platform that matches these managers with companies, recruitment cabinets, and private equity/investment funds needing temporary senior leadership. The firm targets use cases spanning crisis management, leadership relay, digital/international/M&A transformation, restructuring, carve-out, and performance improvement, addressing a French market that generated €430M in 2023 with 253 actors and grew 13.5% year-over-year. The core technology is the 'App 400' web and mobile application, which enables manager profile visibility, communication, event/workshop participation, and mission sharing, supplemented by a free public-facing manager profile search on the company's website. The firm differentiates through a rigorous co-optation-based selection process, the Bureau Veritas 'Référentiel Management de Transition' certification held by only ~10% of market actors, and its institutional linkage to the France Transition federation co-founded in 2007 by Bruno Calbry.

Name

400 Partners

Legal name

SAS 400

Website

https://400.partners

Company type

Private

Founded year

2018

Operating status

Operating

Headcount range

11–50 employees

Ownership category

akta.pro rank

Product category

Executive Interim Management Services

NAICS

Management Consulting Services (54161), Administrative Management and General Management Consulting Services (541611), Human Resources Consulting Services (541612)

SIC

Services-Management Consulting Services (8742), Services-Management Services (8741)

akta.pro primary industry

Strategic Partnerships, Alliances & JVs Advisory (BPAHADAI)

akta.pro secondary industry

Local & Regional Generalist Staffing Agencies (BPACACAH)

Keywords

• Interim executive management
• Management de transition
• Executive interim placement
• Crisis management consulting
• Transformation consulting services

Headquarters

HQ city

Paris

HQ country

France

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Technology or R&D, Marketing or Sales, Operations, Others

Revenue model

1. Intermediation / Commission on Mission Fees: 400 Partners acts as an intermediary between companies needing interim executive management and a curated network of 400+ independent manager-members. The firm charges a commission on daily rates (industry standard 20-30% of daily rate). Managers can also be engaged via portage salarial (5-10% fee structure). Revenue flows from the margin between the rate billed to the client and the rate paid to the manager.
2. Membership & Community Services: Managers pay to join the 400 network and receive a label ('Membre 400'), visibility promotion, access to a proprietary app, events, workshops, and peer ecosystem. Members are also eligible to become shareholders of the SAS à capital variable.

Pricing tiers

Go-to-market motion2 records

Distribution channels4 records

Marketing channels7 records

Core offering

400 Partners is an interim executive management (management de transition) firm that operates a curated network of 400+ vetted senior managers—Directeurs Généraux, DAF, DRH, DSI, Direction Industrielle, Supply Chain, Marketing, and other C-suite functions—and matches them with French companies, recruitment cabinets, and investment funds needing temporary executive leadership. The firm bills clients at interim-manager daily rates and earns a commission (industry-standard 20–30%) on the gross daily rate, supplemented by recurring membership fees from managers joining the network. Service is delivered through a hybrid model combining a proprietary web/mobile platform (App 400) for profile visibility and mission matching with human advisory and quality follow-up.

Product overview

400 Partners is a management de transition (interim executive management) services firm that operates a network platform connecting experienced executive managers (members) with companies, cabinets, and investment funds needing temporary leadership. The core offering consists of the 400 Partners member network and matchmaking platform, supported by a web and mobile application (App 400), a body of published practical guides (the 'Guides 400 c'est possible' collection), and a labelled certification process (Label Membre 400). The company does not offer a software-as-a-product in the traditional SaaS sense; its 'products' are service offerings structured around its network of interim executives, its platform for profile visibility and mission matching, and its knowledge-content library.

Differentiator

Problem solved

Functional benefit

Products and services

• 400 Partners Network & Platform Curated network of 400+ interim executive managers (Managers de Transition) recruited by cooptation, accessible via the App 400 web and mobile application, enabling companies and funds to search and match with available senior managers for operational transformation, crisis, relay, and project missions.
• App 400 Web and mobile application enabling 400 Partners members to view each other, communicate, organize and participate in workshops and events, share mission opportunities, access tools and training, and maintain profile visibility on the web.
• Label Membre 400 (Member Certification) Quality certification awarded to interim managers upon validation of competencies covering savoir-faire, savoir-être, and faire-savoir, providing assurance to client organizations and professional intermediaries.
• Guides 400 c'est possible (Collection) Collection of seven illustrated practical guides written collectively by 400 Partners transition managers, covering purchasing, business valuation, leadership, relocalisation, cash management, turnaround, and impact missions, designed for business leaders and managers outside their own field of expertise.
• Manager Profile Search (Recherche de Profils) Public-facing search tool allowing companies and funds to browse a selection of interim manager profiles by expertise area, without requiring registration, to identify available candidates matching specific functional or sector needs.
• Mission Matching & Intermediation Services Intermediation services pairing client organizations with suitable interim managers, including mission framing, quality follow-up, and exit evaluation, backed by the Bureau Veritas label and France Transition federation membership.

Quantifiable outcome

• France Transition 2023 barometer: average daily billing rate 1,280 €/HT (+4% YoY); 7% increase in missions above 1,500 €/day
• +3 more outcomes

Named customers32 records

Segments4 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature1 record

Partnerships

Four partnerships are on record, tiered core, secondary and minor.

• France TransitioncoreStrategic or Co-development PartnerFrance Transition is the federation of interim management actors in France. 400 Partners is a member, and its cofounder Bruno Calbry co-founded the federation in 2007. The federation publishes the annual market barometer (covering 63% of the intermediated market), sets quality standards, and promotes the profession. Membership provides legitimacy, market intelligence, and a collective voice for the industry.
• Bureau VeritascoreStrategic or Co-development PartnerBureau Veritas Certification awarded 400 Partners the Veritas label for the Management de Transition reference framework. The certification covers ethics, competence guarantees, labor law compliance, contractual clarity, personalized service delivery, and client satisfaction. Only ~10% of market actors hold this certification. 400 Partners was re-certified in subsequent years.
• Ôhm - La Maison du DirigeantsecondaryGTM or Marketing PartnerÔhm - La Maison du Dirigeant is a collective of expert partners serving company leaders. 400 Partners collaborates with Ôhm on networking events (e.g., 'Fêtons 2022 ensemble', 'Fêtons 2023 ensemble'), seminars on topics like human capital in M&A, and provides logistical and professional community support for joint events aimed at members and industry peers.
• SIACI SAINT HONOREminorStrategic or Co-development PartnerSIACI SAINT HONORE (HR and executive consulting firm) partnered with 400 Partners on a table ronde (roundtable) about collective transitions and employee retraining. Myriam El Khomri (former French Minister of Labor) and Bertrand Martinot (economist) participated alongside Bruno Calbry of 400 Partners, demonstrating cross-industry collaboration on labor transition topics.

Scale indicators9 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• Progressium: French interim management firm operating a comparable executive network and intermediation model. Targets the same ETI/large-group/PE buyer segment for transformation and management-relay mandates.
• Valtus: Recognized French market leader in management de transition / interim executive management, named alongside 400 Partners as a top-tier cabinet. Competes directly for the same C-suite interim mandates with a larger, more established network.
• EIM (Executive Interim Management): Paris-based interim management cabinet serving C-level transformation and crisis mandates. Comparable network-based intermediation model and target buyer profile to 400 Partners.
• Delville Management: French interim management cabinet explicitly co-named with 400 Partners as a top player in the France Transition federation. Directly comparable mission types (transformation, crisis, M&A, relay) and target clients (ETI, large groups, PE funds).
• Actiss: French interim management cabinet co-named with 400 Partners as a leading market actor. Same intermediation/commission model serving ETI and large groups across transformation and crisis mandates.

Broad incumbents

• Korn Ferry: Global organizational consulting firm with executive search and interim placement capabilities. Overlaps with 400 Partners on C-suite interim mandates but as part of a much broader HR/consulting portfolio.
• Heidrick & Struggles: Global executive search and leadership advisory firm with French presence. Competes at the C-suite level for senior interim and transformation mandates alongside 400 Partners.
• Robert Walters: Global listed executive search and recruitment firm with a French presence and dedicated interim management practice. Operates broader portfolio beyond interim but directly competes for senior-level interim mandates in France.
• Michael Page / PageGroup: Global listed executive search firm with significant French operations. Competes for senior interim and transformation mandates as part of a wider recruitment portfolio rather than specializing in interim management.
• Hays: Global listed recruitment and workforce solutions firm with substantial French operations across multiple specializations. Provides interim and executive search capabilities that overlap with 400 Partners' offerings.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/400partners

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about 400 Partners