Addison Group Acquires ArcLight Consulting

Accenture Acquires The Highlands Consulting Group

August 18, 2025

Consulting

Accenture has acquired The Highlands Consulting Group, a Sacramento-based management consulting firm with expertise in healthcare, transportation, social services and organizational change management. The acquisition strengthens Accenture’s capabilities serving California state agencies and expands its public sector consulting footprint in the state; financial terms were not disclosed.

Addison Group Acquires DLC Group

January 30, 2019

Staffing & HR

Addison Group, backed by Odyssey Investment Partners, has acquired DLC Group, a Los Angeles–based finance and accounting consulting and staffing firm; financial terms were not disclosed. Gryphon Investors exited its investment in DLC Group as part of the transaction. The deal expands Addison's finance and accounting capabilities and strengthens its presence in Los Angeles and Southern California.

ArcLight Capital Partners Acquires Advanced Power

July 24, 2025

Energy

ArcLight Capital Partners has acquired Advanced Power and committed an initial $1 billion equity investment to accelerate development of modern power infrastructure. The partnership could deploy more than $5 billion over five years to support over 20 GW of new generation and 10+ GWh of storage, targeting utilities, data center developers and hyperscalers across North America.

Addison Group Acquires Harmony Healthcare

July 11, 2022

Healthcare Services

Addison Group has acquired Harmony Healthcare, a Tampa-based human capital management firm that provides non-clinical healthcare staffing and consulting solutions nationwide. The acquisition expands Addison's non-clinical healthcare capabilities and reinforces its strategy of growth through targeted acquisitions to better serve health systems, physician practices, payers and government clients.

CBIZ Acquires ARC Consulting LLC and ARC Placement Group LLC

September 1, 2020

Accounting & Tax

CBIZ, Inc. acquired substantially all of the assets of ARC Consulting LLC and ARC Placement Group LLC (collectively "ARC") of San Francisco, effective September 1, 2020. The deal expands CBIZ's presence in Northern California and adds specialized accounting, IPO readiness and finance/talent placement capabilities to its advisory services.

Trilantic North America Acquires Addison Group from Odyssey Investment Partners

January 4, 2021

Staffing & HR

Trilantic North America has acquired Addison Group, a Chicago-based professional services firm specializing in talent solutions and consulting, from Odyssey Investment Partners. Financial terms were not disclosed; Addison operates across technology, finance & accounting, healthcare and digital marketing and employs over 2,200 professionals across more than 32 U.S. offices.