Acquisitions work the same as they always have. Roughly, if half the voting shareholders approve of the deal it will go through. Edit: from the first result in

Acquisitions work the same as they always have. Roughly, if half the voting shareholders approve of the deal it will go through. Edit: from the first result in Google: > Casalena and long-term investors General Atlantic and Accel, which make up about 90% of the Squarespace’s voting shares, have agreed to vote in favor of the transaction. So I guess the shareholders mentioned in the subheading of the linked press release own a majority.