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Germain Starck advises clients on all aspects of French and international taxation. His practice focuses on national and cross-border transactions (M&A, private equity, and real estate), and he also counsels clients on tax matters related to investment funds and on tax litigation.

Prior to joining Jones Day in 2021, Germain practiced tax law in New York and in Paris.


  • Waga Energy raises €52 million in accelerated bookbuilding offeringJones Day advised Waga Energy, an independent producer of renewable biomethane (RNG) from landfill gas with operations in Europe and North America, on its €52 million accelerated bookbuilding private placement.
  • Amolyt Pharma enters into definitive agreement to be acquired by AstraZenecaJones Day is advising Amolyt Pharma, a global, clinical-stage biopharmaceutical company specializing in developing therapeutic peptides for rare endocrine and related diseases, in its $1.05 billion acquisition by AstraZeneca.
  • Silicon Mobility sold to IntelJones Day advised Silicon Mobility SAS in the acquisition of the company by Intel Corporation.
  • Origine Partners forms Origine PME I fundJones Day advised Origine Partners in connection with the formation of the fund "Origine PME I", a private equity fund focusing on French companies operating in all sectors, but which generally have a B2B activity.
  • Arverne Group combines with Transition to publicly list on Euronext Paris the future French leader in geothermal and low-carbon lithium to drive energy transitionJones Day advised Arverne Group SAS, a French company ("Arverne"), in its business combination with Euronext listed Transition SA to create the future French leader in geothermal and low-carbon lithium production.
  • BNP Paribas, Bryan Garnier, and Natixis complete €141 million capital increase of CarbiosJones Day advised BNP Paribas, Bryan Garnier, and Natixis in connection with the €141 million capital increase with shareholders' preferential subscription rights of Carbios, a biotech company specialized in the development and industrialization of biological technologies used for plastic and textiles recycling.
  • Voltalia completes €490 million capital increase with shareholders' preferential subscription rightsJones Day advised Voltalia S.A. in the €490 million capital increase with shareholders’ preferential subscription rights on the regulated market of Euronext in Paris.
  • Content Square obtains $200 million revolving credit facilityJones Day advised Content Square, a digital experience analytics company and one of France's largest technology unicorns, in connection with a $200 million revolving credit facility provided by a syndicate of banks.
  • Eurobio Scientific acquires GenDxJones Day advised Eurobio Scientific SA in the acquisition and financing of the Dutch company Genome Diagnostics BV (GenDx) from its founder and its shareholders for €135 million (net of adjusted cash).
  • Deezer merges with and into I2PO S.A.Jones Day advised Deezer S.A. in the context of the SPAC transaction whereby Deezer S.A. merged with and into I2PO S.A., a French SPAC listed on the professional segment of the regulated market of Euronext Paris and the related PIPE financing.
  • TDF Fibre obtains sustainable project financing to roll-out and operate fiber optic networks in FranceJones Day represented TDF Fibre, a joint venture between TDF SAS and the Caisse des dépôts et consignations, in connection with a €735 million credit facility to (i) refinance and finance the rollout and operation of four fiber optic networks located in low-density areas in the departments of Val d'Oise, Yvelines, Loir-et-Cher, Indre-et-Loire, and Maine-et-Loire and (ii) finance the acquisition of additional fiber optic networks in France.
  • 360Learning raises $200 million in financing roundJones Day advised 360Learning, a French-based company having developed a collaborative learning SaaS platform to help companies unlock learning based on collective expertise, in connection with its $200 million round of financing led by Sumeru, Silver Lake, and Softbank.