Since joining Kirkland, Guillaume has worked on the following matters, advising:
- Hg on significant minority investment by Téthys Invest and GIC in Septeo Group
- SK Capital Partners on the sale of Ipackchem
- Warburg Pincus and ArchiMed on the €2.4 billion sale of Polyplus
- Platinum Equity on the agreement to acquire HarbisonWalker International, Inc.
- Platinum Equity on the acquisition of High Temperature Solutions Business
- Ares on the acquisition of a majority stake in Point Vision Group from Abenex
- SK Capital Partners on the acquisition of Ipackchem
- iCIMS, a portfolio company of Vista Equity Partners, on its acquisition of EASYRECRUE
- Appfire, a portfolio company of Silversmith Capital Partners, on its acquisition of Innovalog
- Vitruvian Partners on the sale of Technogroup to 3i-backed Evernex
- Warburg Pincus on its investment in Polyplus, a developer of innovative and cost-effective technology used in gene and cell therapy
- Vista Equity Partners-backed Mediaocean, on the acquisition of MBS, the leading media management software provider in France
- Goldman Sachs Merchant Banking Division on its acquisition of B&B Hotels
Prior to joining Kirkland, Guillaume worked on the following matters, advising:
- PAI Partners on its acquisition of Areas, a global leader in the food and beverage and travel retail markets
- Apax Partner-backed Unilabs, on the acquisition of France-based medical biology laboratory operators Biopath, Polibio and SFMTBIO
- STOA, on its acquisition from the International Finance Corporation (IFC) of a minority stake in the Nachtigal Hydro Power Company
- Sumitomo Corporation, on its acquisition of a minority stake in the offshore wind projects of Dieppe Le Tréport and Les Iles d’Yeu Noirmoutier
- Temasek, the Singaporean investment company, in connection with its acquisition of a minority stake in the investment management company/asset manager, Tikehau Capital
- Société Générale (acting through Lyxor Asset Management) on the sale of its 49% stake in Fortune, its investment management joint venture with Baosteel in the PRC and Hong Kong
