The tender offer for all of the outstanding shares of Amicas’ common stock by Project Ready, a wholly owned subsidiary of Merge Healthcare, expired on April 23, according to health IT company Merge.

Milwaukee-based Merge said it was notified at the time of the expiration by StockTrans, the depositary for the offer, that Amicas’ stockholders had validly tendered and not withdrawn 91.6 percent of the outstanding shares.

Merge has accepted, for payment, all shares that were validly tendered in accordance with the terms of the offer. Merge expects to complete the transaction on or around April 28. The company also said it intends to acquire all of the remaining outstanding Amicas stock by means of a short-form merger and without the need for an Amicas shareholder meeting.

Upon completion of the merger, the remaining outstanding shares of Amicas common stock will be converted into the right to receive the offer price of $6.05 in cash, without interest, and the Boston-based Amicas will be a wholly owned subsidiary of Merge. It will no longer be traded on the Nasdaq Global Market, Merge said.