Didn’t a handful of Coinbase employees make out like bandits before Ethereum was listed? What’s changed since then?
Given the article explicitly covers the topic of an employee exploiting prior knowledge of what coins were going to be listed and when - clear the investigators were aware of the potential for this; if others were doing it, they must have done it in a way that was not obvious.
If you have specific verifiable information, hire an attorney and use them to file a SEC whistleblower report. If your evidence leads to enforcement actions that are subject to their jurisdiction and the fines collected are over one million, you will anonymously get 10-30% of the fines they collect.