Guillaume Fornier advises companies, whether listed or unlisted, in their strategic acquisitions and disposals, capital transactions, shareholder relations or partnerships. Guillaume also acts on international M&A transactions.
He is the author of several articles on Corporate Law and teaches Corporate Law at the University of Paris-Saclay.
Skills
Lawyer since : 2010
Bar. : Paris
Language(s) : French - English - German
Training :
- École de formation du barreau, CAPA – 2009
- ESSEC, Master of Business Administration – 2009
- University Paris 1 Panthéon-Sorbonne, Master 2 Financial Law – 2008
Publications
- Imprevision and transfer of shares: constitutionality of Article L. 211-40-1 of the CMF – Option finance, 03/07/2023
- In the silence of the statutes, the director of SAS is revocable as nutum…-Option finance, 30/05/2022
- Clause de non-concurrence et contrepartie financière : quelques précisions complémentaires par la chambre commerciale de la Cour de cassation – Option Finance, 15/10/2021
- Le contrôle des investissements étrangers se cherche un avenir européen, Magazine Reflets, novembre 2020
- Un an après la réforme du droit des obligations, Option Finance, février 2017 (avec R. Ducatez)
- Loi Sapin 2 – Vers une adoption d’un dispositif de prévention de la corruption à la charge des sociétés, Option Finance, septembre 2016 (avec Ph. Portier)
- Loi Sapin 2 – L’imminente révolution du dispositif de lutte anticorruption en France ?, Magazine des Affaires, septembre 2016 (avec Ph. Portier)
- La société libre de partenariat : le « Limited Partnership » à la française, Option Finance, octobre 2015 (avec N. Goetz)
Jeantet advises Oxylabs in connection with its acquisition of Scrapingbee
Paris, July 4, 2025 – Jeantet advised Oxylabs, one of the market-leading companies in web scraping solutions, in connection with its acquisition of ScrapingBee, a French fast-growing web scraping company known for its developer-friendly solutions. Through this strategic acquisition, Oxylabs significantly expands the Oxylabs group’s ecosystem as well as its target clientele, now addressing direct […]
Paris | CORPORATE – M&A – PRIVATE EQUITY
Jeantet advises AEQUITA on the acquisition of european olefins et polyolefins assets from chemicals group LYONDELLBASELL
Paris, June 27, 2025 – Jeantet acted as French legal counsel to AEQUITA SE & Co. KGaA, a global industrial group headquartered in Munich, in connection with the signing of an agreement and entry into exclusive negotiations to acquire four European olefins and polyolefins assets from chemicals group LyondellBasell. The transaction covers plants located in […]
Paris | CORPORATE – M&A – PRIVATE EQUITY
JEANTET ASSISTS SIRIUS SPACE SERVICES IN ITS ACQUISITION OF S.E.R.M FROM THE FIVES GROUP
Paris, June 19, 2025 – Jeantet advises Sirius Space Services, a player in the space sector, on the acquisition of S.E.R.M (Société d’Études et de Réalisations Mécaniques), a historic precision machining site, accompanied by a strategic partnership with the Fives group and its subsidiary AddUp, a specialist in metal additive manufacturing. With this strategic acquisition, […]
Paris | CORPORATE – M&A – PRIVATE EQUITY
JEANTET ADVISES CENTREON IN CONNECTION WITH ITS ACQUISITION OF QUANTA IO
Paris, June 13, 2025 – Jeantet is advising Centreon, a trusted partner in digital performance monitoring, in connection with its acquisition of Quanta.io, a French software company renowned for its expertise in Web Performance and Green IT. Through this strategic acquisition, Centreon becomes the only private and independent vendor to offer an end-to-end observability platform […]
Paris | CORPORATE – M&A – PRIVATE EQUITY
JEANTET ADVISES THE DLF GROUP IN ITS JOINT-VENTURE WITH THE FLORIMOND DESPREZ GROUP
Paris, April 25, 2025 – Jeantet advised the DLF group in its joint venture with the Florimond Desprez group to create United Beet Seeds, a global player in the sugar beet seed industry. DLF Seeds A/S, a farmers’ cooperative headquartered in Denmark and present in 22 countries, the world’s leader in the breeding and production […]
Paris | CORPORATE – M&A – PRIVATE EQUITY | COMPETITION AND ECONOMIC LAW | TAX | EMPLOYMENT
Jeantet advised the LOOPING GROUP in its acquisition of PARC SAINT-PAUL
Paris, 24 March 2025 – Jeantet advised the Looping Group, the leading European operator of regional leisure parks, announced the acquisition of Parc Saint-Paul, one of the most iconic theme parks of the region of Oise in France and ranking amongst the 10 most important theme parcs in France. Created in 2011, the Looping Group […]
Paris | CORPORATE – M&A – PRIVATE EQUITY
Jeantet advised TIS Inc. in the context of the Series B fundraising of Alice & Bob
Paris, February 3, 2025 – Jeantet advised TIS Inc. in the context of the Series B fundraising of Alice & Bob. Jeantet’s team was composed of Guillaume Fornier (Partner, Corporate/M&A), Georges-Dominic Sardi and Emma Rouhaud (Associates, Corporate/M&A). TIS was also advised by the law firm Nishimura & Asahi (Gaikokuho Kyodo Jigyo), with a team led […]
Paris | CORPORATE – M&A – PRIVATE EQUITY
Jeantet advises SBV and SMBV in connection with the Paris FC sale
Paris, 9 December, 2024 – Jeantet has advised Sports Bridge Ventures (SBV) and Sports Bridge Media Ventures (SBMV), in connection with the sale of their respective stakes in Paris Football Club to Alter Paris, holding company of Mr. Pierre Ferracci (current chairman of the Paris FC), in the context of the transaction with the Arnault […]
Paris | CORPORATE – M&A – PRIVATE EQUITY
Jeantet advises JIN in its acquisition of LJ COMMUNICATION
Paris, October 21 2024 – Jeantet has advised JIN, an independent public relations group, in its acquisition of LJ Communication, a consulting agency specialising in communications, public relations, media and influence in the health and environment sectors. Founded in 2000, LJ Communication is a Paris-based public relations consultancy specialising in the healthcare sector. It joins […]
Paris | CORPORATE – M&A – PRIVATE EQUITY | LISTED COMPANIES AND CAPITAL MARKETS LAW
Jeantet advises GROUPE ELIOR in its acquisition of DEMOULIN TRAITEUR
Paris, 19 July, 2024 – Jeantet has advised the Elior group, one of the world’s leading contract caterers, on its acquisition of Démoulin Traiteur, a high-end catering services company. Growing rapidly since its creation in 1991 and its takeover by the Derichebourg group in 2023, Elior, a publicly listed French group specializing in contract catering, […]
Paris | CORPORATE – M&A – PRIVATE EQUITY
Jeantet advised ANANDA IMPACT VENTURES and CONTRARIAN VENTURES on the EUR 3.6 million SSED round of DECADE ENERGY
Jeantet advised Ananda Impact Ventures and Contrarian Ventures on the EUR 3.6 million seed round of Decade Energy. Decade Energy is a French start-up providing logistics companies with holistic, reliable and cost-efficient solutions that enable the electrification of commercial electric vehicle fleets, aiming to the decarbonation of logistic fleets. The company is headquartered in Paris, […]
Paris | CORPORATE – M&A – PRIVATE EQUITY
Jeantet advised “K” Line in connection with the takeover of Airseas start-up’s business as part of a prepack sale
Paris, February 20, 2024 – Jeantet advised the shipping company KAWASAKI KISEN KAISHA LTD “K” Line (Tokyo, Japan), on the prepack sale takeover of Airseas’ business activity (Nantes, France), which develops a propulsion technology for freight transportation ships. On February 14, 2024, following negotiations under the conciliation procedure, the Nantes Commercial Court ruled in favor […]
Paris | RESTRUCTURING – LAW OF COMPANIES IN DIFFICULTY