ANDOVER, MA – MKS Instruments today said it will buy Atotech for $5.1 billion, according to reports.

The cash-and-stock deal includes $16.20 in cash and 0.0552 of an MKS common stock for each Atotech share, a per share value of around $26. The offer represents a premium of about 10% to Atotech's closing price on June 10.

The deal is expected to close by the fourth quarter of 2021, expanding MKS' chip manufacturing capabilities with the addition of Atotech's plating chemicals.

Atotech makes chemicals and equipment for printed circuit boards and semiconductors used in smartphones, appliances and heavy machinery.