MTL Holdings Acquires Citadel Architectural Products

Carlisle Companies Acquires MTL Holdings from GreyLion Partners

March 18, 2024

Building Products

Carlisle Companies (NYSE: CSL) completed the acquisition of MTL Holdings from GreyLion Partners for $410 million in cash. MTL, a Waukesha-based manufacturer of prefabricated perimeter edge metal systems and non-insulated architectural wall panels (brands include Metal-Era, Hickman and Citadel), generated $132 million of revenue for the twelve months ended February 29, 2024; Carlisle expects ~$13 million of cost synergies and ~$0.60 of adjusted EPS accretion in the first full fiscal year.

Cornerstone Building Brands Acquires MAC Metal Architectural

August 17, 2023

Building Products

Cornerstone Building Brands has acquired MAC Metal Architectural, a Saint-Hubert, Quebec-based manufacturer of high-end steel siding and roofing products. The acquisition expands Cornerstone’s exterior building-products portfolio and supports MAC Metal’s growth beyond Quebec; MAC Metal employs approximately 100 people.

Founders East Capital Partners Invests in Alumitech Architectural Glass and Metal

November 8, 2023

Building Products

Founders East Capital Partners has completed an investment in Alumitech Architectural Glass and Metal, a Halifax-based provider of engineered curtain walls, architectural windows, skylights, storefronts, doors, metal cladding and custom fabricated architectural glass. Founder Norsat Eblaghi will remain an owner and director and will work with Founders East to select and mentor the company’s next president as part of a succession-focused recapitalization to support the company’s next phase of growth.

West Edge Partners Launches Citadel Access Solutions with Three Access-Solutions Acquisitions

July 16, 2025

Building Products

West Edge Partners formed a new platform, Citadel Access Solutions, by acquiring three access-solutions businesses: C.G. Systems (dba California Gate & Entry Systems), Western Door and Gate, and Elite Access. The platform will operate the partner companies under their existing brands and pursue additional add-on partnerships to scale service, installation and maintenance capabilities across gates, commercial doors, access control, parking management and video surveillance.

ARCH Precision Components Acquires Metalcraft Technologies

November 17, 2021

Aerospace & Defense

ARCH Precision Components, a Madison Dearborn Partners portfolio company, has acquired Metalcraft Technologies Inv., LLC (MTI) of Cedar City, Utah as an add-on to expand ARCH's aerospace and defense manufacturing footprint. MTI, a 30+-year sheet metal fabrication and aircraft-components manufacturer operating roughly 150,000 sq. ft. across two facilities, brings additional sheet-metal fabrication, machining and surface-treatment capabilities to the ARCH platform.

BlueHalo Acquires Citadel Defense to Bolster Counter‑UAS Capabilities

November 8, 2021

Aerospace & Defense

BlueHalo, a portfolio company of Arlington Capital Partners, has acquired Citadel Defense, a San Diego-based developer of AI/ML-powered counter‑unmanned aerial systems (cUAS). The acquisition adds Citadel's autonomous detection, tracking and neutralization capabilities to BlueHalo's directed-energy and layered perimeter defense portfolio to accelerate fielding of multi-modal cUAS solutions for defense, government and commercial customers.