
Shares of medical equipment maker Penumbra PEN.N rise 13.6% to $356 premarket
Boston Scientific says it will buy Penumbra in a deal valued at about $14.5 billion
The transaction values each Penumbra share at $374, a premium of 19.3% to the stock's last close
Boston Scientific BSX.N falls 4.10% to $89.90 premarket
The deal is expected to be completed later this year
BSX shares rose 6.75%, PEN rose 29.6% in 2025