Perseus Operating Group (Constellation Software) Completes Acquisition of IronHQ

Perseus Operating Group of Constellation Software Acquires Starkwood Media Group

April 27, 2026

Software

Perseus Operating Group (“Perseus”) of Constellation Software completed the purchase of Starkwood Media Group (“Starkwood”), a UK provider of website design and digital solutions for vehicle dealers. The acquisition adds complementary digital capabilities—such as bespoke websites and stock management—to strengthen and expand Constellation’s dealer technology portfolio.

Polycorp Acquires Iron Horse Engineering Company

January 22, 2026

Manufacturing

Polycorp, a portfolio company of Arsenal Capital Partners, has acquired Iron Horse Engineering Company, a pioneer in rail boot and embedded track technologies. The deal expands Polycorp’s rail product portfolio and engineering capabilities to deliver more integrated solutions across light- and heavy-rail applications worldwide.

Peak Rock Capital Affiliate Acquires Aegis Industrial Software

August 21, 2025

Software

An affiliate of Peak Rock Capital has completed the acquisition of Aegis Industrial Software, a Horsham, Pennsylvania–based provider of FactoryLogix, an IIoT-based manufacturing execution system (MES) used across aerospace & defense, medical devices, consumer electronics, and diversified industrial markets. Aegis' founders will remain shareholders and continue in their management roles while Peak Rock intends to accelerate product investment, geographic expansion, and pursue strategic acquisitions to grow the business.

Perseus (Constellation Software) Acquires Matrix Sistemas e Serviços Ltda

November 20, 2024

Healthcare Services

Perseus Operating Group, an operating group of Constellation Software Inc., has completed the acquisition of Matrix Sistemas e Serviços Ltda, a leading Brazilian provider of clinical laboratory information systems. The business will be placed into Perseus' newly formed Miram Solutions portfolio, marking Perseus' first acquisition in Brazil and its eighth healthcare acquisition overall.

Hale Capital Partners Acquires Majority Stake in Athenium

November 6, 2024

Software

Hale Capital Partners, a New York-based growth private equity firm, led a cooperative recapitalization to acquire a majority stake in Athenium, a Dover, New Hampshire provider of risk and quality management software. The investment brings in Jim Greenwell as CEO and will support product development, AI/analytics capabilities and expansion into new verticals including insurance, financial services and government.

IQ-EQ Acquires Constellation Advisers LLC

January 5, 2021

Financial Services

IQ-EQ, an Astorg-backed investor services group, has completed the acquisition of Constellation Advisers LLC, a U.S.-based outsourced and co‑sourced investment management services provider. The deal expands IQ-EQ’s U.S. footprint and capabilities in fund administration, outsourced CFO/COO services and regulatory compliance, adding Constellation’s ~115 professionals across six U.S. offices to IQ-EQ’s combined U.S. platform.