Law Firm Splits Operations in $700M Deal
Owners of professional-services firms can see how a management services organization lets outside capital in without giving up control of the legal practice.
Updated on Nov. 2, 2026 in Business Strategy
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Santa Monica-based law firm Wood Smith Henning & Berman, which has 600 attorneys and focuses on civil litigation and insurance defense, signed a deal with Boston buyout firm Charlesbank that values its new management services organization, WSHB Support Services, at $700 million. Operators in professional services should note the MSO structure, which lets outside capital enter a non-legal management company.
Why it matters
The partners said continuing to scale would mean taking on inorganic growth and leaning into AI-driven efficiency, and private equity backing was pursued to serve clients and grow market share. The MSO structure lets private equity inject capital without assuming control of the legal practice, a model that moves back-office functions into a separate entity.
The deal values WSHB Support Services at $700 million, an investment in a firm with 600 attorneys across 35 states and 43 offices. The new MSO absorbed roughly 550 non-legal staff, and the firm plans to grow from 600 lawyers to 1,200 over the next several years.
The players
Wood Smith Henning & Berman
A Santa Monica-based civil litigation and insurance defense firm with 600 attorneys and offices in 43 locations nationally.
Charlesbank
A Boston-based buyout firm managing $24 billion in assets that has made growth investments in Aprio and become the first private equity sponsor of Bridgepoint Technologies.
The details
Under the MSO model, a separate management company handles human resources, IT, and other non-legal operations, while the law practice itself remains with its attorneys. Charlesbank's capital flows into that management entity, which will bring on merger-and-acquisition and integration specialists to implement AI and other technology across operations. The arrangement is designed to help the firm address client demand it has sometimes struggled to meet.
Timeline
In the first quarter of 2026, the firm went to market to find a private equity partner.
On November 2, 2026, the WSHB private equity deal was announced.
Market Landscape
Private equity has increasingly used the MSO structure to invest in professional-services firms without controlling the legal practice. WSHB's deal with Charlesbank follows that pattern and sits alongside Charlesbank's earlier investments in Aprio and Bridgepoint Technologies, as well as Trive Capital's September investment in Century City-based Massumi + Consoli.
Professional-services firms weighing outside capital should understand the MSO structure and what it means for back-office control. Operators should watch how competitors in law and accounting respond to similar deals and track whether AI-driven efficiency measurably changes client service capacity.
The takeaway
Firms considering private equity should map which functions can move into a management services organization and which must stay with the practice. Consult qualified counsel on the regulatory and ethics rules that apply before restructuring any legal business.
Further reading
For more on how firms like this one approach growth and capital, see our Business Strategy coverage.
Source note: This article includes information reported by Los Angeles Business Journal.
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