WGNSTAR Acquires Principal Service Solutions (PSS)

Westerwood Global Acquires NSTAR Global Services

February 1, 2023

Industrial Services

Westerwood Global acquired NSTAR Global Services effective February 1, 2023. The acquisition combines Westerwood's managed workforce solutions with NSTAR's asset relocation, facility and equipment services to create a broader asset lifecycle management and workforce solutions provider for the semiconductor and high-technology manufacturing industries.

Partners Warehouse Acquires PSS Distribution Services

December 12, 2024

Logistics & Distribution

Partners Warehouse, a portfolio company of Red Arts Capital, has acquired PSS Distribution Services, a Northeast third-party logistics (3PL) provider headquartered in Jamesburg, New Jersey. The add-on expands Partners Warehouse's East Coast footprint, strengthens its food- and ingredients-focused warehousing capabilities, and broadens its service offering for retail, grocery and e-commerce customers.

Agilent Technologies Acquires Polymer Standards Service (PSS)

August 2, 2022

Manufacturing

Agilent Technologies has acquired Polymer Standards Service GmbH (PSS), a Germany-based specialist in polymer characterization instruments, reference materials and GPC/SEC software. The acquisition expands Agilent's liquid chromatography and polymer analysis capabilities and enables broader global distribution of PSS products and services.

PSS Industrial Group and Cross Country Combine to Form PSS Cross Country Infrastructure Solutions

February 9, 2026

Industrial Services

PSS Industrial Group has combined with Cross Country Infrastructure Services to form PSS Cross Country Infrastructure Solutions, creating a national provider of equipment rental, supplies and services for critical infrastructure projects. The combination expands the companies' geographic footprint and capabilities across energy, renewables, utilities and civil construction markets.

Platform Partners Completes Minority Investment in Process Service Specialists

August 4, 2020

Industrial Services

Platform Partners LLC completed a minority equity investment in Process Service Specialists, LLC (PSS), a specialty mechanical contractor and turnaround services provider headquartered in Gonzales, Louisiana. Platform partnered with strategic co-investors Bruce Ross (OFS Energy Fund), Adam Zylman (Grey Owl Partners) and Dave Fanta to support PSS's continued growth, infrastructure investment and capability expansion while co-founders Keith Harrison and Roy Stilley remain in leadership roles.

PSST Acquires Paragon Compliance

April 11, 2025

Professional Services

PSST, a PennSpring Capital-backed provider of integration and compliance solutions for K‑12 and other organizations, has acquired Paragon Compliance, a provider of ACA compliance and consulting services that serves schools, municipalities and private employers with emphasis in New York, Ohio and Connecticut. The deal establishes PSST as a platform for complementary add-on acquisitions to consolidate ACA compliance capabilities and expand service reach.