The story
Founded by Claude Lartigue, Hervé Laurent and Philippe Forgues in 1991.1
Private company
In Extenso
Logo: Ruben Sebag, Public domain, via Wikimedia Commons3
In Extenso is a French accounting and advisory firm based in Lyon, founded in 1991.1 It was founded by Hervé Laurent, Philippe Forgues and Claude Lartigue.1 Its chief executive is Frank Lamotte.1 Its revenue was €650 million in 2025.1
In Extenso est un cabinet d’expertise-comptable français, fondé en 1991 à Lyon, par Hervé Laurent, Philippe Forgues et Claude Lartigue, présent en France, en Suisse et en Belgique, spécialisé dans les services aux TPE-PME et aux professions libérales.2 From the French Wikipedia, CC BY-SA 4.0
Last updated Oct 21, 2026.
Overview
1991Founded1
- Industryaccounting activities1
- HeadquartersLyon, France1
- Websitewww.inextenso.fr
- Legal formsociété par actions simplifiée1
Leadership
Who has led In Extenso, and when. Pick a name to see everywhere that person has worked.
- FounderClaude Lartigue1
- FounderHervé Laurent1
- FounderPhilippe Forgues1
- Chief executive officerFrank Lamotte1
- ChairAntoine de Riedmatten1
Revenue over time
As stated on Wikidata, in the currency reported.
Revenue
Timeline
- 1991Founded Founded1
Links
- Websitewww.inextenso.fr1
- Facebookwww.facebook.com/inextenso.fr1
- Instagramwww.instagram.com/inextenso.fr1
- YouTubewww.youtube.com/channel/UCW0Wvet2u-gQy9Zj5g9i1Mw1
- LinkedInwww.linkedin.com/company/in-extenso1
- WikidataQ126758927
Sources
The numbers on this page point here. Each one links to the record it came from.
- 1WikidataIn Extenso on Wikidata
- 2WikipediaIn Extenso on the French Wikipedia
- 3Wikimedia CommonsIn Extenso logo by Ruben Sebag, Public domain