You do need cash to pay the ATO.
The value has not changed. The extra securities were sold at around fair market value.
Dilution too small to be calculated.
The BLK chart shows resist/support levels in high 70s and low 90s.
Punters who view current price volatility as a buying op are chasing 10c and 25c margins in the short term (a month or so).
all disclaimers - it's your money/choice.