Gaëtan Gianasso is recognized as one of France’s leading M&A and private equity lawyers, advising global private equity clients in complex mergers, acquisitions, dispositions, and transaction financings. He brings deep experience in leveraged acquisitions (LBOs) and has advised on some of the most significant private equity and M&A transactions in France and across Europe.
Ranked in Chambers France for private equity, Gaëtan is known for being “very responsive, thoughtful in achieving commercial outcomes and able to drive a deal forward,” according to feedback in the publication. In 2025, he was named France’s private equity lawyer of the year by Option Finance and Option Droit & Affaires. Gaëtan is also recognized by Legal 500 EMEA.
Experience
Gaëtan’s experience includes advising:
- TA Associates in:
- the sale of a majority stake in Solabia Group, a global biotechnology ingredient solutions provider, to Astorg*
- the acquisition of 100% of CDPQ’s minority interest in QIMA, a leading provider of quality control and compliance solutions*
- the joint acquisition, alongside Montagu Private Equity, of Harvest, a leading fintech in France for software dedicated to the wealth and finance professions*
- Francisco Partners’ investment in Orisha, a European software publisher dedicated to companies in the retail, real estate, healthcare, construction, and agri-food sectors*
- the acquisition of a majority stake in Valoria, a French player in wealth management consulting*
- the sale of its 38% minority investment in the Vivacy group, a medical aesthetics devices company, to Bridgepoint*
- the sale of, and re-investment in, the Odéalim Group, a France-based insurance brokerage firm, to Ardian*
- the acquisition of a 25% stake in Foncia, a European leader in property management services*
- the acquisition of a majority stake in DL Software, followed by build-up acquisitions of Gercop Group, Jestimo and Sephira Group (software and IT services)*
- the sale of its minority stake in Zadig & Voltaire, a French luxury ready-to-wear company, to Peninsula*
- the sale of Hana Group, a global provider of freshly prepared sushi, to Permira*
- Ardian in:
- the carve out of Magimix from the Robot-Coupe and Magimix group, and sale to Lavafields Group*
- the acquisition of French appliance group Hameur, owner of Magimix, and Robot Coupe*
- the sale of Unither Pharma, a pharmaceutical CDMO, to a consortium composed of IK, Keensight, and GIC*
- the acquisition of BioClinic and BioFutur, France-based operators of medical biology laboratories*
- the acquisition of a minority stake in Inovie, a leading independent medical diagnostic provider in France*
- the sale of Photonis, a manufacturer of photomultiplier tubes, to HLD*
- the sale of the DRT Group (rosin and turpentine extracted from pine resin) to the Firmenich group*
- the sale of the Kersia Group, a global leader in biosecurity and food safety, to IK*
- the acquisition of a majority stake in the Santé Cie Group, a specialist in home medical assistance*
- the acquisition of Cérélia, a leading transatlantic provider of innovative bakery solutions, from IK*
- EQT in:
- its co-investment with PSP in Cerba HealthCare, a medical biology laboratories company*
- PSP Investments in:
- its reinvestment and minority investment in Ceva Santé Animale (Ceva), the world’s fifth-largest animal health and well-being company*
- its reinvestment in Cerba HealthCare (medical biology laboratories) alongside EQT*
- Ontario Teachers in:
- the sale of its stake in Diot-Siaci Group, a French and European leader in corporate insurance brokerage, to Ardian*
- its investment in the merger of Siaci Saint Honoré and the Burrus Group*
- Summit Partners in:
- the acquisition, alongside its portfolio company Doctrine, of Maite.ai, Spain’s leading legal AI platform*
- the acquisition, alongside its portfolio company Doctrine, of Predictice, a company specializing in AI-driven legal software and databases for legal professionals*
- the acquisition of Doctrine, a leading provider of legal intelligence solutions*
- the sale of its minority stake in Sipartech, a dark fiber provider in France, to Blackstone*
- the sale of its minority stake in Sezane (fashion industry) to General Atlantic*
- Intermediate Capital Group in:
- the cross-fund sale of Domus Vi, a leader in accommodation and services for dependent or autonomous seniors*
- the build-up acquisition through DomusVi of the Residalya group from Ackermans & van Haaren (flats and nursing homes for elderly people) *
- Peugeot Invest in:
- its minority investment in Novétude Group, a European healthcare education platform, alongside majority shareholder Charterhouse Capital Partners and the management team*
- its minority investment alongside Summit Partners in Doctrine, a leading provider of legal intelligence solutions*
- OneRock Capital Partners, LLC, in:
- the acquisition of Europe Snacks, a leading private label manufacturer of savory snacks for the European market*
- Platinum Equity in:
- the acquisition of Solo Group, a European market leader in business-to-business personalizable products*
- the acquisition of Biscuit International, a leading European manufacturer of private label sweet biscuits, from Qualium Investissement*
- Core Equity Holdings in:
- the acquisition of Provalliance, a European leading provider of haircare services and products*
- Cobepa in:
- the sale of its stake in Staci, a logistics solutions provider for companies, to Ardian*
- Ares in:
- the acquisition of Technicolor’s Trademark Licensing operations*
* Experience prior to joining Ropes & Gray
