Thermo Fisher to Sell Microbiology Business to Astorg for About $1.075 Billion

Published: 2026-04-27 08:53:23 ET TMO

Published on 04/27/2026 at 08:53 am EDT

By Colin Kellaher

Thermo Fisher Scientific has struck a deal to sell its microbiology business to European private-equity firm Astorg for about $1.075 billion.

Thermo Fisher on Monday said the microbiology business, which provides antimicrobial susceptibility testing and culture media solutions for clinical, pharmaceutical and food-safety testing, generated $645 million in revenue last year.

Waltham, Mass., life-sciences giant Thermo Fisher posted 2025 revenue of nearly $44.6 billion.

Thermo Fisher said it expects to complete the sale, which includes cash and a $50 million seller note, in the second half of the year, adding that it expects the divestiture will clip adjusted per-share earnings by 15 cents in its first full year.

Astorg, which specializes in healthcare, technology and business-services investments, has more than $28 billion in assets under management.

The firm was part of a group that sold endpoint data solutions provider Clario Holdings to Thermo Fisher for nearly $8.9 billion in a deal that closed in March.

Write to Colin Kellaher at [email protected]

(END) Dow Jones Newswires

04-27-26 0852ET