Collagen Matrix Acquires Polyganics

Linden Capital Partners Acquires Collagen Matrix, Inc.

August 1, 2019

Medical Devices

Linden Capital Partners, a Chicago-based healthcare private equity firm, has acquired Collagen Matrix, Inc., a New Jersey-based developer and manufacturer of collagen-based medical products used in tissue and bone repair across orthopedic, sports medicine, dental, and neurosurgery markets. The transaction (financing provided by Golub Capital and Northwestern Mutual) supports Linden's focus on medical products, contract/private-label manufacturing and expansion in dental and orthopedic end markets; Metalmark Capital was the prior owner.

Collagen Matrix Acquires GUIDOR Synthetic Bone Graft & Membrane Business from Sunstar

December 29, 2020

Medical Devices

Collagen Matrix, a Linden Capital Partners portfolio company, has acquired Sunstar's Degradable Solutions division, including the GUIDOR-branded synthetic bone graft substitutes and bioresorbable membranes. The acquisition expands Collagen Matrix's regenerative product portfolio and electrospinning capabilities to support new combination products and broader dental market applications.

Biosynth Acquires celares to Expand Bioconjugation and Polymer Drug Delivery Capabilities

July 11, 2023

Biotechnology

Biosynth, a Switzerland-based supplier of critical raw materials and manufacturing services, acquired Berlin-based celares, a developer and manufacturer of bioconjugates, activated PEGs and polymer-based drug delivery excipients. The acquisition strengthens Biosynth's capabilities in conjugate vaccines and bioconjugate drugs and adds GMP bioconjugation and PEGylation manufacturing in Berlin to its service offering.

Gannet BioChem Acquires Laysan Bio

January 22, 2026

Biotechnology

Gannet BioChem, a PE-backed specialty CDMO, has acquired Laysan Bio, a maker of activated polyethylene glycol (PEG) reagents based in Arab, Alabama. The add-on expands Gannet BioChem's activated polymer and bioconjugation capabilities, strengthening its ability to support partners from early development through GMP manufacturing.

Medbio (Graham Partners) Acquires Polymer Conversions

September 1, 2020

Medical Devices

Graham Partners’ portfolio company Medbio, an outsourced medical device manufacturer based in Grand Rapids, Michigan, has acquired Polymer Conversions, Inc., a Western New York contract molder. The add‑on expands Medbio’s geographic footprint and injection‑molding and assembly capabilities, creating cross‑selling opportunities and expected operational synergies for the combined medical‑device manufacturing platform.

Solesis Acquires Polyzen

November 3, 2022

Medical Devices

Solesis, an operating company backed by Altaris, has acquired Polyzen, a contract developer and manufacturer of polymer-based films, coatings, components and assemblies for the medical device and biopharmaceutical markets. Polyzen will operate as a subsidiary of Solesis, expanding Solesis' polymer film and coating capabilities to better serve medical device, bioprocessing, drug delivery and cell and gene therapy customers.