She is also a non-executive director of Tesla Inc - the high profile electric car and solar energy company,which is bleeding cash,scrambling to meet production deadlines,and led by Elon Musk, whose past few months must rank among the most extraordinary for a corporate leader in history.
It's an unusual situation,and many observers of both Telstra and Tesla are wondering how long it will persist.
Over the weekend,we learned that changes are finally coming to the Tesla board. But whether they could extend to Denholm remains unclear.
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Musk settled fraud charges with America's powerful securities regulator over tweets he made earlier this year claiming financing to take the $US45 billion ($62.3 billion) company private had been secured.
According to the settlement,Musk will relinquish the chairman's seat at Tesla for at least three years. But he will remain chief executive of the company. (Contrary to corporate governance norms in Australia and many other parts of the world,the same person can and often does hold these two important roles in the US.).
The company will appoint two new independent directors to its board,and establish a new committee to oversee Musk's communications with investors,which probably means no more Ambien-infused tweets.