Thermo Fisher Closes $1.1B Sale of Microbiology Unit to PE Firm

Thermo Fisher closes $1.1B sale of microbiology unit to PE firm

European private equity firm Astorg will run the business as an independent diagnostics company, led by former PerkinElmer CEO Dirk Bontridder.

Thermo Fisher Scientific Completes Sale of its Microbiology Business to Astorg

WALTHAM, Mass.--(BUSINESS WIRE)--Aug 12, 2026-

Astorg completes Thermo Fisher microbiology carve-out

Astorg has completed its acquisition of Thermo Fisher Scientific’s global microbiology business, creating an independent diagnostics company with approximately 2,400 employees and 13 manufacturing and research sites worldwide. The operation serves clinical, pharmaceutical, and food-safety testing markets and is expected to adopt a new corporate brand later in 2026. The business supplies microbiology consumables and equipment to more than 15,000 …

Astorg Completes Acquisition of Thermo Fisher Microbiology Business

The deal establishes an independent global microbiology diagnostics company under new leadership. Astorg, a pan-European private equity firm, announced the completion of its acquisition of the global microbiology business from Thermo Fisher Scientific. The business will now operate as an independent company and plans to launch a new corporate brand later in 2026, according to a press release from Astorg. Dirk Bontridder has been appointed CEO to…