Clifford Chance advises Viking Global Investors on a majority stake investment in Callstack
July 31, 2025
- Neil Barlow, Mark Sheehy, Wojciech Polz, Carla Ruggero (She/Her), Joshua Higgins, Jack Weymer, Philip Wagman, Paweł Zawiślak, Brian Concklin, Santi Roca Arribas (He/Him), Katia Gauzès, Arkadiusz Walkowicz, Lauren Harris, Aleksandra Ulatowska, Maxime Majerus, Daryl Fairbairn (He/Him), Xanadu Halkias, Dunja Pralong-Damjanovic
- New York
Clifford Chance advises Viking Global Investors on a majority stake investment in Callstack
Global law firm Clifford Chance has advised Viking Global Investors on a majority stake investment in Callstack, a company in React Native and cross-platform app development.
The transaction was led by private equity partner Neil Barlow and counsel Mark Sheehy alongside partners Wojciech Polz and Carla Ruggero, senior associate Joshua Higgins, associate Jack Weymer and trainee solicitor Atiah Zohura. This matter highlights the firm's strength in advising global investors on complex cross-border private equity M&A in the technology sector.
The wider team included:
- Tax: partner Philip Wagman (New York), counsel Tomasz Szymura (Warsaw), associate Gil Shauly (New York), and advocate Paweł Zawiślak (Warsaw)
- Antitrust: partner Brian Concklin and counsel Santiago Roca Arribas (Washington, DC)
- Corporate: partner Katia Gauzes (Luxembourg), legal advisor Arkadiusz Walkowicz (Warsaw), counsels Dunja Pralong-Damjanovic and Lauren Harris, associate Kenza Boudjema (Luxembourg), legal advisor Aleksandra Ulatowska (Warsaw), associate Maxime Majerus (Luxembourg), legal advisor trainee Grzegorz Serafin (Warsaw) and trainee solicitor Will Hanley (London)
- IP: Counsel Daryl Fairbairn and associate Xanadu Halkias (New York).
Viking is a global investment firm that manages over US$50 billion of capital across public equity, private equity, and credit and structured capital strategies. Viking has more than 275 employees, including more than 40 investment professionals, across five offices: Stamford, New York, Hong Kong, London, and San Francisco.
