Insider trade on Splunk acquisition?

Let's say you live in front of the Splunk office, and you see tens of people in suits, a limo with a CISCO sticker, as well as a lot of commotion on the office in front of you. You strongly suspect something is happening, you buy $22k of Splunk calls.

Is that insider trading?

If it's legal, it means that somebody could write a model that could predict mergers pretty accurately and make a lot of money. For instance, by tracking flight patterns of C-suites executives, scanning car brands in parkings next to offices using satellite images, and analysing working hours of the staff (this can be done in multiple ways like sending e-mails to check of automated OOO responses or analysing the light coming out of the building from satellite images.)