Thermo Fisher buys PPD for $17.4 billion in Waltham giant's largest deal to date
Thermo Fisher buys PPD for $17.4b in Waltham giantâs largest deal to date By Anissa Gardizy and Jonathan Saltzman Globe Staff,Updated April 15, 2021, 12:40 p.m. Email to a Friend Thermo Fisherâs share price rose more than 3.4 percent Thursday, closing at $494.38.Thermo Fisher Thermo Fisher Scientific, the Waltham laboratory equipment maker with the biggest market value of any Massachusetts company, said Thursday that itâs paying $17.4 billion for a North Carolina company that helps drug makers run clinical trials. The cash deal to acquire PPD marks the latest merger involving c...