Yes. From the looks of it, the CEO is just selling a previously-negotiated award on the date of acquisition. He has been awarded, then immediately sells roughly 70,000 shares a day over two days, along with exercising some options.

Table II shows that he still (indirectly) owns around 24 million shares of Class B stock and 130k options.

This is a nothingburger.

Yes, footnote 1 says the transactions were effected pursuant to a 10b5-1 plan.

The filing notes that these trades are following a 10b5-1 plan, which is basically exactly that: you set up trades in advance so that you can make them without falling afoul of the insider trading rules.