Earlier quoted context omitted.
It's definitely suspicious and will probably be looked into. If it turns out it's a trader who regularly buys soon-to-be-expiring option calls, maybe it'll fly. But if the trade was made by someone who doesn't regularly make $20,000 options bets, they will need a good explanation.
Why will they need a good explanation? Can't they just say I lucked out and the burden of proving insider trading would fall on the SEC? Innocent until proven guilty right?
Especially if the person doing the trade is found to be employed by (or closely related to someone employed by) Cisco or Splunk or one of their banks.