Blackstone, TPG Agree to $18 Billion Deal to Buy Hologic (1)

Blackstone Inc. and TPG Inc. have agreed to acquire medical-device maker Hologic Inc. for as much as $18.3 billion, including debt, adding to the flurry of multibillion-dollar dealmaking by private equity firms in recent weeks.

The buyers will pay a total consideration of up to $79 per share for Hologic, according to a statement Tuesday. The offer represents a roughly 15% premium to Hologic’s closing price on Thursday — before Bloomberg News reported a sale was close.

Blackstone and TPG will pay $76 a share upfront in cash and as much as $3 more per share if certain business targets ...