Sam Altman, the CEO of OpenAI, has denied serious allegations made by his sister, Ann Altman, in a lawsuit filed this week. The lawsuit, filed in Missouri, accuses Sam of sexually abusing Ann for nearly a decade, starting when she was just three years old. The alleged incidents reportedly took place at their family home in St. Louis, Missouri, between 1997 and 2006. The claims include allegations of rape, sexual assault, molestation, and battery.

Ann’s legal action details her accusations, including that the abuse continued even when she was a minor and Sam had become an adult. In response, Sam Altman issued a joint statement with his mother and brothers, calling the allegations “utterly untrue.” The family stated that Ann has faced mental health challenges and has refused conventional treatment. They also emphasized that Ann receives financial support from the family, which they continue to provide, but Ann reportedly continues to demand more.

Ann’s lawyer, Ryan Mahoney, countered the family’s defense, stating that it is common for families to deny such claims and that the focus should be on the truth of the allegations, not the family’s response. Mahoney also insisted that Ann’s mental health struggles did not contribute to the allegations.

Ann, now 31, says she has experienced PTSD, emotional distress, and depression because of the abuse. She is seeking at least $75,000 in damages for her pain and suffering. She had previously shared her story on social media starting in 2021. The lawsuit was filed under Missouri law, which allows victims of child sexual abuse to sue until their 31st birthday.

Sam Altman, 39, is best known as the CEO of OpenAI, a company that has revolutionized artificial intelligence with tools like ChatGPT. OpenAI, supported by Microsoft, had a $157 billion valuation as of October 2024.