When Uber founder and CEO Travis Kalanickstepped down in June, he retained his ownership stake in the company and seat on its board of directors.
The 10th and 11th board members are former Xerox CEO Ursula Burns, and former Merrill Lynch head John Thain.
The appointments also present a problem for Uber's new chief executive, Dara Khosrowshahi, who was recruited last month to try to bring order to the privately held company. Kalanick says he controls three of the company's eleven board seats. "It is therefore essential that the full Board be in place for proper deliberation to occur, especially with such experienced board members as Ursula and John". He did not specify the proposals he opposed. "That is precisely why we are working to put in place world-class governance to ensure that we are building a company every employee and shareholder can be proud of", it added.
According to a source familiar with the situation, Benchmark Capital, a large shareholder and board seat holder, proposed a change in the company's voting structure earlier this week that would eliminate the super-voting power of shares held by early investors and executives like Kalanick.
Kalanick's power to unilaterally name these two board members comes from a now-disputed decision from past year, in which the board granted him the power to make three appointments as part of a $3.5 billion investment from a Saudi Arabia wealth fund.
Kalanick remains supportive of Khosrowshahi, the person said.
A DE judge later that month stayed the Benchmark lawsuit and sent it to arbitration, pushing the dispute out of public view and delivering Kalanick a victory.
Kalanick's action on Friday could be subject to a new legal challenge. Benchmark or other Uber investors could attempt to block the appointments by asking the DE judge to issue a so-called "status-quo order".
Kalanick as the chief executive last month.
Benchmark did not immediately respond to a request for comment.