Massumi + Consoli Launches PE-Backed Management Services Unit to Attract Talent
Massumi + Consoli launched ElevenHundred+, a private equity-backed MSO with equity incentives.
Why it matters: This launch shows how midsize firms use private equity-backed business units to enhance legal and operational talent retention, a key concern for in-house counsel and legal ops professionals managing legal spend and vendor relationships.
- ElevenHundred+ MSO launched by Massumi + Consoli on September 24, 2026, to manage operational infrastructure.
- Private equity backs ElevenHundred+; equity incentives offered to lawyers and staff to boost retention.
- Shon Glusky, former Sheppard Mullin M&A attorney, joined as partner and Chief Strategy Officer.
- Massumi + Consoli, founded in 2015, has five U.S. offices and focuses on middle market private equity clients.
On September 24, 2026, Massumi + Consoli officially launched ElevenHundred+, a management services organization (MSO) backed by private equity. The MSO is tasked with overseeing the firm's business, technology, and operational functions to support growth and competitiveness. This model lets the firm separate legal services from business operations—which remain privately equity-owned—enabling strategic investment without directly selling legal practice ownership.
The new MSO offers equity incentives to both lawyers and support staff, aiming to strengthen retention and align employee performance with the firm's growth objectives. Such equity participation is becoming more common as mid-size firms face competitive talent markets and expensive recruitment challenges.
To lead ElevenHundred+’s growth strategy, Massumi + Consoli brought on Shon Glusky, a seasoned mergers and acquisitions lawyer with over 15 years at the Am Law 50 firm Sheppard Mullin. Joining as partner and Chief Strategy Officer in New York, Glusky’s experience includes driving previous firm expansions and private equity transactions.
Founded in 2015, Massumi + Consoli operates five offices across the U.S. and covers 17 practice areas, including private equity, debt finance, and litigation. Their focus on middle market private equity clients aligns with the MSO model’s goal of scalable, efficient service delivery.
This launch reflects a growing trend reported by Law.com and analyzed by the Legal Executive Institute: mid-sized law firms increasingly create PE-backed management services organizations to access capital without breaching professional ownership rules. This approach helps firms secure operational agility and compete in talent recruitment, critical for in-house counsel when selecting legal providers and managing firm relationships.
By the numbers:
- September 24, 2026 — ElevenHundred+ MSO launch date by Massumi + Consoli
- Five U.S. offices — Massumi + Consoli's footprint
- 17 practice areas — Focus areas including private equity and litigation
Yes, but: While private equity backing enables operational investment, law firms must carefully navigate legal ethics restrictions on ownership to maintain client trust and regulatory compliance.
What's next: Massumi + Consoli plans to expand ElevenHundred+ offerings nationwide and introduce new technology platforms in 2027 to further enhance operational efficiency.