Cumming Group Acquires RWBID Construction Management

Cumming Group Acquires PlanB Consultancy

July 4, 2020

Engineering Services

Cumming Group, a portfolio company of Tailwind Capital, has acquired Portland-based PlanB Consultancy, a specialist in cost management and quantity surveying for chip manufacturers, data centers and other high‑tech facilities. The transaction is an add-on that expands Cumming's project controls and quantity surveying capabilities across the Pacific Northwest and internationally.

Cumming Group Acquires Inici Group

March 1, 2021

Engineering Services

Cumming Group, a portfolio company of Tailwind Capital, has acquired Portland-based project management firm Inici Group as an add-on to expand Cumming’s capabilities in the Pacific Northwest. The transaction is Cumming’s eighth add-on since its 2016 investment by Tailwind and is intended to broaden regional capacity and specialized services for Cumming’s clients.

Cumming Group Acquires World Wide Professional Solutions (WWPS)

April 16, 2025

Engineering Services

Cumming Group has merged with World Wide Professional Solutions (WWPS), combining WWPS' ~230 professionals with Cumming's global project and cost-management capabilities to form the largest pure‑play service provider in the U.S. semiconductor construction market. The deal expands Cumming's expertise in semiconductor and advanced manufacturing facility program, project, construction, and equipment installation services and strengthens its position amid rising onshoring and capital investment in U.S. chip manufacturing.

New Mountain Capital Acquires Cumming Group from Tailwind Capital

December 1, 2021

Construction

New Mountain Capital has partnered with Seattle-based Cumming Group in a growth-oriented transaction in which Tailwind Capital sold its stake while retaining an equity interest alongside New Mountain. Terms were not disclosed; Cumming is an international project and cost management consultancy with 1,100+ employees across 41 offices and will use New Mountain's capital to pursue organic growth and acquisitions.

Cumming Group Merges with Seneca Group

October 17, 2025

Consulting

Cumming Group has merged with Seneca Group, bringing more than 70 Seneca professionals into Cumming’s platform to expand the firm’s Pacific Northwest capabilities. The combination strengthens Cumming Group’s owner-advisory, project management, and cost-consulting services for corporate, healthcare, and education clients and expands its regional and international footprint.

Ridgewood Infrastructure Acquires Waste Resources Management (WRM)

January 9, 2024

Environmental Services

Ridgewood Infrastructure LLC has acquired Waste Resources Management (WRM), a Houston-based provider of liquids and wastewater collection, treatment and disposal services that operates 13 treatment facilities across the U.S. Ridgewood said the acquisition expands its water-sector platform and will support WRM’s growth and service offering enhancements as the firm scales the business.