Greg Brockman Net Worth

Greg Brockman has an estimated net worth of $25.5 billion, according to Forbes Real-Time Billionaires, Greg Brockman profile (figures as of October 20, 2026).

Greg Brockman is an American entrepreneur and software engineer best known as cofounder and president of OpenAI. Before that, he joined Stripe in 2010 after leaving MIT. In 2013, he became the payments company's chief technology officer. He left Stripe in 2015 and helped start OpenAI with Sam Altman, Elon Musk and Ilya Sutskever. That move put him at the center of one of the biggest AI companies in technology.

His wealth is tied to OpenAI, according to Forbes. Forbes' real-time billionaires tracker put his net worth at $25.5 billion as of October 20, 2026. Forbes also notes that Brockman said in May 2026 that he owns an OpenAI stake worth more than $20 billion, estimated at around 2.5% to 3% of the company. OpenAI has been his main business focus since 2015, where he has served as president and also held the CTO role.

How Greg Brockman built his fortune

Brockman's money story starts with two big tech jobs. He first made his name at Stripe, where he joined in 2010 and became chief technology officer in 2013. In 2015, he left to help create OpenAI. Since then, he has served as president, and his fortune is connected to the value of his ownership in the company. Forbes places him in the technology industry and describes him as self-made.

At OpenAI, Brockman helped recruit the founding team and led projects including OpenAI Gym and OpenAI Five. He also took part in major product moments, including the 2023 live demo for GPT-4. In 2026, he took on major roles across product and day-to-day operations, along with product strategy and scaling efforts. Those leadership jobs help explain why his wealth is tied so closely to OpenAI's business position.

What Forbes says about his net worth

Forbes' real-time billionaires tracker listed Greg Brockman at $25.5 billion in October 2026. That estimate connects directly to OpenAI, the company he cofounded in 2015 and still leads as president. Forbes also reported that he testified in May 2026 that his OpenAI stake was worth more than $20 billion, with estimates placing it at around 2.5% to 3% of the company. That ownership is the key driver of his wealth.

Because the Forbes information here gives one public estimate, the main money angle is not a long year-by-year climb but the size of his OpenAI stake. Brockman did not build his fortune from entertainment, sports or a mix of public companies. Instead, his wealth comes from one AI company where he has held top roles since its launch. That makes his finances unusually concentrated around OpenAI's value and future.