Nonantum Capital Partners Acquires Helix Traffic Solutions

Helix Traffic Solutions Acquires Highway Safety Services

August 4, 2025

Infrastructure

Helix Traffic Solutions, majority-owned by Nonantum Capital Partners, has acquired Highway Safety Services of Lafayette, Indiana. The add-on expands Helix's footprint in Indiana's traffic safety market (traffic control, pavement marking, flagging and equipment sales/rentals); transaction terms were not disclosed.

Helix Traffic Solutions Acquires Mels Electric

February 3, 2025

Infrastructure

Helix Traffic Solutions, a portfolio company majority-owned by Nonantum Capital Partners, has acquired Mels Electric of Wilmer, Texas. The add-on expands Helix's traffic safety infrastructure capabilities and strengthens its footprint in the Dallas–Fort Worth market; transaction terms were not disclosed.

Helix Traffic Solutions Acquires IDAX Data Solutions

September 18, 2025

Data & Analytics

Helix Traffic Solutions has acquired IDAX Data Solutions, a Renton, Washington–based provider of multimodal traffic data and analytics, to expand Helix's transportation analytics and data-driven service offerings. The acquisition integrates IDAX's data-collection and analytics capabilities into Helix's traffic control and work-zone management services to deliver more comprehensive solutions for municipal, state, and private-sector clients.

Nonantum Capital Partners Acquires Ross-Simons

December 10, 2020

E-Commerce

Boston-based private equity firm Nonantum Capital Partners has acquired Rhode Island-based direct-to-consumer jeweler Ross-Simons. The deal will keep founder Darrell Ross and CEO Jim Speltz as owner-partners while Nonantum supports the company's next stage of growth and omnichannel expansion.

Nonantum Capital Partners Recapitalizes RoadOne IntermodaLogistics

January 8, 2019

Transportation

Boston-based private equity firm Nonantum Capital Partners completed a recapitalization of RoadOne IntermodaLogistics, partnering with founders Ken Kellaway and David McLaughlin to provide growth capital. The investment will support RoadOne's continued expansion and acquisition strategy for its coast-to-coast intermodal drayage, terminal operations, and transloading network.

Nonantum Capital Partners Acquires LJP Waste Solutions

September 19, 2022

Environmental Services

Boston-based private equity firm Nonantum Capital Partners has acquired LJP Waste Solutions, a regional provider of non-hazardous solid waste, recycling and waste-to-energy services, from Aperion Management. Nonantum said it will partner with LJP's management to expand zero-landfill and traditional waste services and pursue complementary add-on acquisitions across the Midwest.