The directors had to exercise the expiring options and needed a lot of cash to do so. It's quite common practice in the UK for directors to sell down sufficient to fund the holding of a proportion of the shares issued - we'll see soon enough when the company makes its next declaration of directors' interests.
Directors who borrow money to hold can be as nervous as private investors making investments through spread bets and derivatives and, in my view, that is not in the general interest of shareholders.
The options expired last week so their positions must be pretty much clear.
Thanks to Riche for clarifying 'Aurora' - saw the name in one of Agent's photos and was pretty certain that it wasn't AUT (wrong county) but wasn't sure how it linked up with TXN.
TXN Price at posting:
72.5¢ Sentiment: Hold Disclosure: Held