MacKenzie Bezos likely to be world's richest woman after divorce
wired.com
wired.com
If she has a claim to 50% in divorce, then she also had that claim prior to divorce.
Lou Pai was an Enron exec who divorced his wife and married a stripper. As a part of his divorce he sold off 250m of shares months before the value of them collapsed. He was (relatively) shielded from the insider training charges.