WilmerHale Advises Thermo Fisher on $2.5 Billion Offering of Senior Notes

WilmerHale Advises Thermo Fisher on $2.5 Billion Offering of Senior Notes

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WilmerHale advised Thermo Fisher Scientific Inc. (NYSE: TMO) (“Thermo Fisher”) in connection with its offering of $500,000,000 aggregate principal amount of its 4.200% Senior Notes due 2031, $750,000,000 aggregate principal amount of its 4.473% Senior Notes due 2032, $750,000,000 aggregate principal amount of its 4.794% Senior Notes due 2035 and $500,000,000 aggregate principal amount of its 4.894% Senior Notes due 2037. The offering priced on September 30, 2025, and closed on October 7, 2025. The joint book-running managers for the offering were J.P. Morgan Securities LLC, ING Financial Markets LLC, Mizuho Securities USA LLC and Scotia Capital (USA) Inc.

The WilmerHale team advising Thermo Fisher on the offering consisted of Molly Fox, Andrew Langworthy, Katharine Patterson, and Tim Kolankowski (Capital Markets), with assistance from Meghan Walsh and Ben Kelsey (Tax).

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