Some of these suits are derivative actions alleging insider trading. (lawyer-monthly.com)
Example: Before was fired for alleged insider trading at FrontPoint, Chip Skowron was sacked by Millenium for poor performance. (businessinsider.com)
Coinbase fluffed the rollout of Bitcoin Cash via its exchange in December 2017, resulting in a class - action lawsuit that alleged insider trading at worst or, at best, gross negligence in the introduction of the coin. (cryptotimes.news)