Mill Rock Packaging Partners (Mill Rock Capital) Acquires Trojan Lithograph

Mill Rock Packaging Partners Acquires All Packaging Company

February 22, 2021

Packaging

Mill Rock Packaging Partners, the specialty packaging platform backed by Mill Rock Capital, has acquired All Packaging Company, a paperboard folding carton manufacturer based in Aurora, Colorado. The acquisition (terms undisclosed) expands Mill Rock Packaging's Western U.S. footprint and capabilities across design, printing and converting while All Packaging's president Kenneth Pepper and senior management retain ownership stakes and will continue to lead the business.

Mill Rock Packaging Acquires Keystone Paper & Box Company

February 13, 2023

Packaging

Mill Rock Packaging Partners LLC, a specialty packaging platform backed by Mill Rock Capital, has acquired Keystone Paper & Box Company, a custom folding carton manufacturer based in South Windsor, Connecticut. Keystone's management has made a significant investment in the platform and will remain in place; the deal expands Mill Rock Packaging's footprint to the Eastern U.S. and builds the platform's national specialty packaging capabilities. Terms were not disclosed.

Mill Rock Packaging Acquires Woodland Packaging and Laminating Assets from Everett Graphics

August 28, 2024

Packaging

Mill Rock Packaging Inc. (a portfolio company of Mill Rock Capital) acquired the packaging and laminating assets located in Woodland, California from Everett Graphics and entered a long-term supply agreement with Everett. The acquisition expands Mill Rock Packaging’s West Coast capacity and large-format printing and laminating capabilities while supporting Everett’s sustainable tray business focused on single-use plastic replacement. Terms were not disclosed.

Mill Rock Packaging (Mill Rock Capital) Acquires Impressions Incorporated

July 18, 2022

Packaging

Mill Rock Packaging Partners LLC, a portfolio company of Mill Rock Capital, has acquired Impressions Incorporated, a specialty paperboard packaging and commercial printing business based in St. Paul, Minnesota. The acquisition expands Mill Rock Packaging's national footprint into the Midwest and adds Impressions' folding-carton, lithographic printing and value-added engineering capabilities to the combined platform; financial terms were not disclosed.

Artemis Capital Partners Acquires Millrock Technology

September 30, 2025

Medical Devices

Artemis Capital Partners, a Boston-based private equity firm, has acquired Millrock Technology Inc., a Kingston, New York manufacturer of lyophilization (freeze-drying) instrumentation and process development tools for the pharmaceutical, biotech, and diagnostics markets. Under Artemis’ ownership Millrock will continue to operate independently from its Kingston facility while Artemis invests to scale the company’s technical capabilities and global reach.

Arlington Capital Partners Acquires Millstone Medical Outsourcing

January 11, 2022

Medical Devices

Arlington Capital Partners, a Washington, DC-based private equity firm, has acquired Millstone Medical Outsourcing, a Fall River, Massachusetts-based provider of post-manufacturing, quality-critical services and supply chain logistics to medical device and pharmaceutical manufacturers. Selling shareholders included Schooner Capital; Arlington said it will provide strategic and capital support to accelerate Millstone's organic growth and pursue strategic acquisitions.