In the "egregious, flat-out betrayal" category for insider trading cases we have previously seen:

1.  Wife betraying husband;
2.  Husband betraying wife; and
3.  Boyfriend betraying girlfriend (and then dumping her, to boot)

What's left?  Well, as of May 2 we now have divorced woman betraying divorced man.  The SEC alleges that Marnie Sharpe learned from her "close friend" about a biopharmaceutical company's favorable and confidential clinical trial results.  The close friend ("Among other things, Sharpe and the executive, both divorced, met socially and exchanged email, phone calls and text messages") was a senior executive at the company, and although he shared the information with Sharpe he allegedly

emphasized that the information was extremely sensitive and that she could not repeat it to anybody. Sharpe confirmed that she knew the information was confidential. Sharpe then asked if she or her parents could buy Renovis stock and he answered "of course not."

Immediately after these conversations, Sharpe spoke to her father, Leclerc, and shared the information she had just learned about the Renovis trial results. Right after his phone call with his daughter, Leclerc called his broker to discuss raising $50,000 in one day for an investment.

Another lowlight of this case is that the allegedly insider-trading father, Leclerc, "asked his broker whether a company could identify him as a purchaser of its stock, and was told that the company could not."