The start-up asked the Securities and Exchange Commission to revise its rules on whom private companies can award equity to.
The votes brought to a close a six-month battle waged across two continents by Disney and Comcast for supremacy in the media business.
Some of the biggest lenders are paying out more than 100 percent of their expected profits.
21st Century Fox and Disney shareholders are scheduled to vote on the proposed deal simultaneously on July 10. The new timeline puts pressure on Comcast, which is considering an all-cash bid for the Fox assets.