Allshares Acquires Stock & Option Solutions (SOS) to Expand U.S. Equity Plan Administration

Koch Companies Acquires Store Opening Solutions (SOS)

January 8, 2026

Logistics & Distribution

Koch Companies has acquired Store Opening Solutions (SOS) from Marmon Holdings, expanding Koch's warehousing, fulfillment and retail-oriented logistics capabilities. The acquisition, which brings SOS's Murfreesboro-based operations and multiple regional locations into Koch Logistics, doubles Koch's nationwide warehouse footprint and strengthens its retail services offering.

Custom Truck One Source Acquires SOS Fleet Services

April 7, 2024

Industrial Services

Custom Truck One Source, a Kansas City–based provider of specialty truck equipment, rentals and services, has acquired SOS Fleet Services, a full-service repair facility in Alexandria, Louisiana. The acquisition adds more than 30,000 sq. ft. of service space and expands Custom Truck's Gulf States footprint, increasing its branch network and enabling local repair and rental support for regional customers.

Auxo Investment Partners Acquires SOS Manufacturing

June 21, 2023

Manufacturing

Grand Rapids-based private equity firm Auxo Investment Partners acquired SOS Manufacturing, a Roberts, Wisconsin-based custom wire harness and cable assembly manufacturer. The deal is Auxo's fourth add-on to its growing wire harness and cable manufacturing platform and will expand the platform's capabilities (including work relevant to supercomputing), while SOS's management will remain in place.

E Source Acquires Water Systems Optimization (WSO)

November 2, 2021

Environmental Services

E Source has acquired Water Systems Optimization (WSO), a Nashville-based water-loss analytics and consulting firm, as a strategic add-on to expand E Source’s water market capabilities. The acquisition, announced by E Source’s owner Align Capital Partners, integrates WSO’s analytics, leak-simulation models, and program management services into E Source’s Technology Planning and Implementation unit to better serve utilities and municipalities.

Flex Technology Group Acquires Standard Office Systems of Atlanta

May 18, 2022

IT Services

Flex Technology Group (FTG), with backing from multi-family office Oval Partners, has acquired Standard Office Systems of Atlanta (SOS). SOS will become a platform company to anchor FTG's expansion into the Southeast; Bryan Ammons and the existing SOS leadership will remain as equity holders and continue to run the business.

RapidSOS Acquires Northern911

November 10, 2025

Telecommunications

RapidSOS has acquired Northern911, a Canada-based backup provider of 911 call-taking and dispatch services. The deal integrates Northern911’s APCO‑certified telecommunicators and backup/VoIP 911 capabilities into RapidSOS’ safety network to strengthen mutual aid, outage resilience, and AI-enabled data sharing for public safety agencies across North America.