Mirion Technologies Acquires Critical Infrastructure Business of Collins Aerospace

Mirion Technologies Acquires Computerized Imaging Reference Systems (CIRS)

November 11, 2021

Medical Devices

Mirion Technologies, Inc. (NYSE: MIR) has signed a definitive agreement to acquire Computerized Imaging Reference Systems, Inc. (CIRS), a Norfolk, Virginia–based maker of medical imaging and radiation therapy phantoms. CIRS (≈80 employees) will be integrated into Mirion's Medical segment; the transaction is expected to close in Q4 2021 for approximately $54 million and is intended to expand Mirion's medical product and services capabilities and drive margin synergies.

Mirion Acquires Certrec to Expand Nuclear Compliance and Digital Capabilities

July 31, 2025

Energy

Mirion (NYSE: MIR) has acquired Certrec, a Fort Worth-based provider of regulatory compliance and digital integration solutions for the energy sector, for a cash purchase price of $81 million plus additional equity incentives. The acquisition brings software and recurring services capabilities to Mirion’s Nuclear & Safety group, strengthening its offerings across nuclear power facilities and broader electric generation markets.

Mirion Technologies Acquires Paragon Energy Solutions from Windjammer Capital

December 1, 2025

Energy

Mirion Technologies, Inc. (NYSE: MIR) has completed the acquisition of Paragon Energy Solutions, a Fort Worth-based provider of engineered electrical, instrumentation & controls, HVAC, mechanical and flow components for nuclear power plants and small modular reactors. Paragon was sold by Windjammer Capital Investors, which had acquired the company in November 2021 and supported product expansion and sales-channel investments to position Paragon for growth in the nuclear sector.

Mirion Technologies Acquires Sun Nuclear Corporation

January 7, 2021

Medical Devices

Mirion Technologies, a Charterhouse-backed provider of radiation detection and measurement solutions, has acquired Sun Nuclear Corporation, a global leader in radiation oncology quality assurance headquartered in Melbourne, Florida. The acquisition expands Mirion’s medical portfolio and capabilities in patient-safety solutions for diagnostic imaging and radiation therapy, integrating Sun Nuclear’s hardware and software QA offerings into Mirion’s global platform.

Mirion Technologies Completes Business Combination with GS Acquisition Holdings Corp II

October 20, 2021

Industrial Services

Mirion Technologies completed its previously announced business combination with GS Acquisition Holdings Corp II (GSAH), with GSAH changing its name to Mirion Technologies, Inc. The transaction raised approximately $2.334 billion of committed capital (including PIPE, trust proceeds and debt financing), provided liquidity to existing Mirion shareholders and positions Mirion to pursue organic and inorganic growth as a public company listed on the NYSE.

Wabtec Acquires ARINC Rail Solutions Business from Collins Aerospace

June 16, 2022

Transportation

Wabtec Corporation has acquired Collins Aerospace’s ARINC rail solutions business segment to expand its digital and electronics portfolio for rail optimization; financial terms were not disclosed. The ARINC rail solutions business provides dispatch, back-office, PTC integration, customer information, cybersecurity and life-cycle management services for transit, regional, inter-city, commuter, subway and light rail systems across the U.S. and Canada.