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
