Who is Jack Altman? Wiki, Age, Wife, Net Worth, Family & Facts About Sam Altman’s Brother

Jack Altman is an American entrepreneur, investor, and co-founder of Lattice, a people management platform that helps companies build high-performing teams and cultures. He is also the brother of Sam Altman, the CEO of OpenAI and former president of Y Combinator.
Early Life and Education
Jack Altman was born in Chicago, Illinois, to Connie Gibstine, a dermatologist, and an unnamed father. He has a younger brother, Sam Altman, who is also a prominent figure in the technology industry. Jack grew up in St. Louis, Missouri, where he attended John Burroughs School, a private school that also counts Jon Hamm and Ellie Kemper among its alumni.

Jack graduated from Princeton University in 2011 with a degree in economics. He was interested in entrepreneurship from an early age and started his first company, a social network for college students, while still in high school. He also interned at Google and McKinsey & Company during his college years.
Jack Altman Wiki/Bio
Name | Jack Altman |
Birth date | Unknown (estimated to be between 1988 and 1991) |
Birthplace | Chicago, Illinois, USA |
Nationality | American |
Education | Princeton University (B.A. in Economics, 2011) |
Occupation | Entrepreneur, investor, co-founder and CEO of Lattice |
Spouse | Julia Weigel Altman |
Children | 2 |
Parents | Connie Gibstine (mother) |
Siblings | Sam Altman (brother) |
Net worth | $100 million – $200 million (estimated) |
Career
After graduating from Princeton, Jack joined Gleacher & Company, an investment banking firm, as an analyst. He worked there for a year before leaving to join his brother Sam in founding Hydrazine Capital, a venture capital firm that focused on investing in early-stage technology startups. Some of the companies that Hydrazine Capital backed include ZenPayroll, Instacart, Teespring, and Coinbase.

In 2013, Jack left Hydrazine Capital to join Teespring, one of its portfolio companies, as the vice president of business development. Teespring is an online platform that allows anyone to create and sell custom apparel. Jack was responsible for managing partnerships, licensing, corporate development, and influencer marketing at Teespring. He helped the company grow from a few million dollars in annual revenue to over $100 million in less than two years.

In 2015, Jack co-founded Lattice with Eric Koslow, a former engineer at Dropbox and Asana. Lattice is a software company that provides tools for performance management, employee engagement, feedback, goal setting, and career development. Lattice aims to help companies create a culture of continuous learning and improvement, and to empower managers and employees to achieve their full potential. Lattice has raised over $300 million in funding from investors such as Tiger Global, Thrive Capital, Founders Fund, and Khosla Ventures. Lattice serves over 4,000 customers, including Slack, Reddit, Cruise, and Asana.
Jack is also an angel investor and advisor to several startups, such as Notion, Figma, Airtable, and Roam Research. He is passionate about building products that improve the way people work and live.
Sam Altman’s Controversial Tenure as OpenAI CEO Ends with Firing
What happened?
OpenAI, one of the most prominent and influential artificial intelligence research and deployment companies, announced on November 18, 2023, that it had fired its co-founder and CEO, Sam Altman, effective immediately. The board of the OpenAI nonprofit, which oversees the activities of the company, said in a statement that it had “lost confidence in Altman’s ability to lead OpenAI and align with its mission and values”
The board did not provide any specific reasons for Altman’s dismissal, but sources familiar with the matter told Bloomberg that there were several factors behind the decision, including:
- Altman’s controversial involvement in Worldcoin, a cryptocurrency project that aims to distribute digital coins to people who scan their eyes with a device called an orb. Critics have raised concerns about the privacy, security, and ethics of the project, which Altman co-founded and invested in.
- Altman’s strained relationship with Microsoft, which pledged to invest $1 billion in OpenAI in 2019 and became its exclusive cloud provider. According to the sources, Altman clashed with Microsoft executives over the terms of the deal, the access to OpenAI’s technology, and the direction of the company.
- Altman’s lack of transparency and accountability to the board, the employees, and the public. The sources said that Altman often made unilateral decisions without consulting the board or the staff, and failed to communicate the company’s vision, strategy, and progress.
The board appointed Mira Murati, the chief technology officer of OpenAI, as the interim CEO while it conducts a search for a permanent replacement. Murati, who joined OpenAI in 2018, is a former Google engineer and a leading expert in natural language processing and computer vision. She has been instrumental in developing some of OpenAI’s most popular and innovative products, such as ChatGPT, DALL-E, and Codex.
Social Media Links
Personal Life & Spouse
Jack Altman is married to Julia Weigel Altman, a co-founder and partner of Y Combinator, one of the most influential startup accelerators in the world. They have two children, a son and a daughter. Jack and Jessica met through Sam, who introduced them at a Y Combinator event in 2014. They got married in 2016 in a private ceremony in Hawaii.

Jack is active on social media platforms such as Twitter, LinkedIn, and Instagram, where he shares his insights on entrepreneurship, leadership, and culture. He also hosts a podcast called People Strategy, where he interviews leaders and experts on topics related to people management and organizational development.

Net worth
Altman’s net worth is estimated to be between $100 million and $200 million, according to various sources. His wealth comes mainly from his stake in Lattice, which is valued at $3 billion as of November 2021, as well as his investments in other successful startups.

Trivia
- He is a fan of the St. Louis Cardinals, a baseball team, and the St. Louis Blues, a hockey team.
- He is an avid reader and recommends books such as The Hard Thing About Hard Things by Ben Horowitz, High Output Management by Andy Grove, and The Score Takes Care of Itself by Bill Walsh.
- He is a supporter of GiveDirectly, a nonprofit organization that provides cash transfers to people living in extreme poverty.
- He is a fan of rap music and lists Kanye West, Drake, and Kendrick Lamar as some of his favorite artists.
Jack Altman is an American entrepreneur, investor, and co-founder of Lattice, a people management platform that helps companies build high-performing teams and cultures. He is also the brother of Sam Altman, the CEO of OpenAI and former president of Y Combinator. Jack graduated from Princeton University with a degree in economics and started his career as an investment banker. He then joined his brother in founding Hydrazine Capital, a venture capital firm that invested in startups such as ZenPayroll, Instacart, Teespring, and Coinbase.
He later left Hydrazine Capital to join Teespring as the vice president of business development, where he helped the company grow from a few million dollars in annual revenue to over $100 million in less than two years. In 2015, he co-founded Lattice with Eric Koslow, a former engineer at Dropbox and Asana. Lattice is a software company that provides tools for performance management, employee engagement, feedback, goal setting, and career development.