Service providers

A&O Shearman hires Sarah de Ste Croix and Gabriel Boghossian from Stephenson Harwood as global co-heads of secondaries practice, expanding coverage of continuation vehicles, GP stakes, and LP portfolio secondaries.

73 Strings, a valuation and portfolio-monitoring platform for alternative asset managers, acquired Callisto, a Paris-based AI due diligence tool for PE/credit firms. Callisto co-founders join 73 Strings as co-heads of AI product; 73 Strings raised $55M Series B in Feb 2025 from Goldman Sachs Alternatives, Blackstone Innovations, Golub Capital, and Hamilton Lane.

Mayer Brown announces Chris Harvey, real estate group co-leader, as next London managing partner, succeeding Dominic Griffiths.

Peter Feist, former head of Cravath's private equity practice, rejoins Weil as US co-head of its PE practice after 20 years there previously. His client base includes Advent International, Hayfin Capital, and OMERS Private Equity.