Key Takeaways
- • Weil Gotshal & Manges is experiencing a significant exodus of senior partners across private equity and M&A, including the departure of its top US corporate dealmaker Michael Aiello and five other partners to Cravath, Swaine & Moore, plus the loss of its London M&A leader David Avery-Gee to Sullivan & Cromwell.
- • The firm's private equity practice—which advises over 300 PE clients globally including 8 of the 10 largest PE funds by PEI 300 2026 ranking—is under particular pressure, with Chris Machera and other PE co-chairs among those departing, raising questions about client retention and practice continuity.
- • Weil's leadership succession plan is under strain as newly appointed chair Ramona Nee, a 25-year PE specialist who assumed leadership following Barry Wolf's retirement in March 2026, faces accelerating departures described as "seismic changes" by rival firm partners.
- • Weil's leadership is exploring merger options to stabilize the firm, with executives acknowledging the departures have prompted internal discussions about strategic partnerships, though further defections could complicate such negotiations.
- • Rival firms are actively recruiting Weil talent, with law firms receiving CVs from Weil lawyers regularly and recruiters capitalizing on the internal turmoil to poach senior dealmakers.
Summary
The scale of the defections has been substantial. Michael Aiello, Weil's most prominent US corporate dealmaker and a close ally of outgoing chair Wolf, announced his departure in September 2026 with five additional partners, all moving to Cravath, Swaine & Moore. Separately, David Avery-Gee, the leader of Weil's London M&A practice, departed for Sullivan & Cromwell. Chris Machera, identified as a co-head of the firm's US private equity business, has also left along with three additional partners. In Germany, six private equity lawyers departed to rival firms, demonstrating the geographic breadth of the attrition. Rival firm partners have characterized Weil's situation as experiencing "seismic changes," with expectations that additional departures will follow in the coming weeks.
The departures carry particular strategic weight given Weil's dominant position in private equity. The firm currently advises more than 300 private equity clients worldwide, including 8 of the 10 largest global private equity funds as measured by PEI 300's 2026 rankings. The loss of senior PE partners and dealmakers threatens this client base and the firm's standing as a top-tier advisor to the largest institutional PE investors. According to Jonathan Soler, co-managing partner of Weil, while the firm characterizes the departures as reflective of broader industry churn, firm leadership is openly considering merger options to stabilize operations. Such discussions have grown more urgent given the talent flight; a merger could become increasingly difficult to execute if departures continue unchecked.
Externally, Weil faces a compounding competitive challenge. Other major law firms report receiving CVs from Weil lawyers on a regular basis, and recruiters are actively approaching Weil partners seeking to capitalize on the turmoil. The combination of an untested new leadership structure, the departure of the firm's most visible dealmakers, and external poaching efforts has created a critical moment for one of Big Law's most storied institutions. Weil's response—either through retention efforts, merger negotiations, or a combination thereof—will shape the firm's competitive position and may influence broader consolidation trends in elite legal practice.
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