Stories like this boggle my mind. How do such people think that they are going to get away with this? If I were going to try something like this I would at least make some attempt to obfuscate my activities; trading through proxies, mixing in losing trades, something.
Many Americans think insider trading is l common than. If everyone is getting away with 70 mph, you can too. (Exhibit A: this thread.)
In reality, insider trading enforcement is effective. The SEC looks for unusually profitable trades ex post facto. Their verification is easier than the insider trading. Wall Street doesn’t insider trade because it’s stupid and there are lower-hanging fruit.