Ann Altman has filed a lawsuit against her brother, Sam Altman, CEO of OpenAI, accusing him of sexually abusing her from ages 3 to 12. The suit, filed in Missouri, claims lasting psychological harm. Sam Altman denies the allegations, stating they are false and a product of his sister's mental health issues. The lawsuit seeks damages over $75,000 and punitive damages based on Sam's wealth, citing a Missouri statute allowing such claims until 10 years after turning 21.