Stratasys shareholders voted against the company's proposed $552 million acquisition of Desktop Metal on Thursday.
As a result, the 3-D printer maker said it is terminating the deal with Desktop Metal, which the board had endorsed as a way to maximize shareholder value.
"We have decided to undertake a comprehensive and thorough review of all available strategic alternatives," Dov Ofer, the company's board chair, said in a news release.
The vote was held early Thursday morning during a special shareholder meeting.
Only 21.4% of the shareholders approved of the plan to acquire Desktop Metal, according to a filing with the Securities and Exchange Commission.
Stratasys, based in Eden Prairie and Rehovot, Israel, announced at the end of May plans to acquire Burlington, Mass.-based Desktop Metal.
With that deal now canceled, the board of directors announced it was conducting a review of strategic alternatives. A review that could bring new life to deals that were made this year and rejected by the board or a whole new set of options.
The board also announced it has adopted a new shareholder-rights plan — or poison pill — that will be in effect for the next three months while it explores alternatives.