Danish transport and logistics company DSV has presented a proposal to acquire Swiss logistics company Panalpina in a 4 billion Swiss francs ($4 billion) takeover bid.

DSV will pay for 23.7 million outstanding shares in Panalpina at $172.1 per share.

Panalpina’s board is still reviewing the proposal in conjunction with its professional advisers.

In 2017, DSV booked $11.44 billion in revenue.