The firms announced merger intent in November 2025 and expect to close in Q3 or autumn 2026, subject to standard conditions. They will operate independently until closing. The specific terms of the partnership agreement and any conditions precedent to closing have not been disclosed.
The merger reflects ongoing consolidation in BigLaw and Ashurst's decades-long search for a U.S. partner. Perkins Coie brings strength in technology, IP, litigation, fintech, and privacy; Ashurst contributes expertise in cross-border transactions, energy, infrastructure, and financial services. The combination positions the firm to compete for large-scale, integrated cross-border mandates at a time when clients increasingly demand global reach and AI-driven capabilities. The deal also follows recent transatlantic combinations including A&O Shearman (2023) and Herbert Smith Freehills-Kramer Levin, signaling a trend toward scale-driven consolidation in the elite legal market.