Age: 41
Net worth: $4.3 billion
Industry: beverage
Andres Santo Domingo's fortune is rooted in Anheuser-Busch InBev, which acquired beer giant SABMiller in 2016 for $100 billion. His father, Julio Mario, had a multibillion-dollar stake in SABMiller, which Andres inherited when Julio Mario died in 2011.
According to Forbes, he's a chairman on the boards of Conservation International and the New York Public Library.
Age: 41
Net worth: $6.4 billion
Industry: tech
Robert Pera founded wireless equipment maker Ubiquiti Networks, which sells wireless broadband systems largely to emerging markets. Pera owns nearly 75% of the company. In 2017, Ubiquiti generated $865 million in revenue.
As Business Insider's Marissa Perino previously reported, he's also one of the richest people in Silicon Valley.
Age: 39
Net worth: $2.7 billion
Industry: tech
Sean Parker had a brief stint at age 24 as Facebook's president, which is where his fortune largely stems from. Parker invested in Spotify in 2010, leaving the Board of Directors in June 2017. In 2015, he created the Parker Foundation, which later established the Parker Institute for Cancer Immunotherapy.
Despite being the founding president of Facebook, Parker criticized the company at an Axios event in 2017, saying, "God only knows what it's doing to our children's brains."
Age: 38
Net worth: $4.2 billion
Industry: tech
Joe Gebbia cofounded home rental company Airbnb with Brian Chesky and Nathan Blecharczyk in 2008. The company recently announced it expects to become a publicly traded company sometime in 2020.
Age: 38
Net worth: $4.2 billion
Industry: tech
Brian Chesky cofounded Airbnb with Blecharczyk and Gebbia. Before Airbnb kicked off, Chesky was earning $40,000 a year as an industrial designer. As Business Insider's Katie Warren previously reported, he's pledged to give away at least half of his fortune to charity.
Age: 37
Net worth: $2.3 billion
Industry: tech
Ernest Garcia III began Carvana, an ecommerce platform for buying and selling used cars, in 2012; it also offers financing services. In 2017, Garcia took Carvana public, raising $225 million.
Age: 37
Net worth: $3.6 billion
Industry: fast food
Lynsi Snyder received her full inheritance to West Coast fast-food chain In-N-Out Burger, founded by her grandparents, on her 35th birthday. Her father and uncle passed away young, and Snyder was the last family heir at age 18. In 2010, she became president and has since expanded In-N-Out.
As Business Insider's Áine Cain reported in October 2018, Snyder is very popular with her employees: At the time, she had a 96% approval rating on Glassdoor
Age: 36
Net worth: $4.2 billion
Industry: tech
Nathan Blecharczyk co-founded Airbnb with Gebbia and Chesky. He was the company's first engineer. Airbnb now operates in more than 100,000 cities and has 7 million listings worldwide.
Read more: How 3 guys turned renting air mattresses in their apartment into a $31 billion company, Airbnb
Age: 36
Net worth: $6.3 billion
Industry: oil
Along with his three siblings, Scott Duncan inherited a stake in his father Dan Duncan's pipeline firm, Enterprise Products Partners, in 2010. The company owns natural gas processing plants, oil and gas storage facilities, and oil and gas pipelines. Duncan isn't actively involved.
The Duncans are one of America's wealthiest families: Collectively, they have a net worth of $24.8 billion.
Age: 35
Net worth: $11.6 billion
Industry: tech
Dustin Moskovitz cofounded Facebook with Mark Zuckerberg in 2004. He left Facebook in 2008 to co-found workflow software company Asana, which earned more than $100 million in revenue in 2018. Moskovitz still owns a 2% stake in Facebook and has given $1.4 billion away to charity.
As Paige Leskin previously reported for Business Insider, Moskovitz numbers among the many successful tech moguls who never graduated from college: He dropped out of Harvard along with Zuckerberg to pursue Facebook.
Age: 35
Net worth: $69.6 billion
Industry: tech
Mark Zuckerberg created Facebook in 2004 and took it public in 2012. Facebook's stock has since increased by more than 408% for a current market capitalization of $547 billion, reported Lucinda Shen for Fortune. Zuckerberg still owns about 15% of the stock. He and his wife, Priscilla Chan, pledged to donate 99% of their Facebook stake during their life.
Read more: 9 mind-blowing facts that show just how wealthy Mark Zuckerberg really is
Age: 34
Net worth: $2.1 billion
Industry: beverage
Julio Mario Santo Domingo III's late grandfather owned a large stake in SABMiller after it was acquired by his brewer Bavaria. In 2016, Anheuser-Bush InBev acquired SABMiller for $100 billion. Santo Domingo is an heir to the fortune and a disc jockey for the group Shek 'N' Beik.
Age: 33
Net worth: $18.1 billion
Industry: retail
Lukas Walton is the grandson of Sam Walton, who founded Walmart. When his father, John Walton, died in a plane crash in 2005, he inherited about one-third of John's estate. While he owns a stake in Walmart, he doesn't work for the company and devotes time to philanthropic causes.
The Waltons are the richest family in the US: They have a net worth of $169.7 billion.
Age: 31
Net worth: $3.7 billion
Industry: tech
Bobby Murphy cofounded Snapchat, which has 203 million daily users, with Stanford fraternity brother Evan Spiegel. As of January 2019, Snap Inc. was worth under $8 billion, Keris Lahiff reported for CNBC.
As Alex Heath reported for Business Insider in 2017, Murphy keeps a relatively low profile and has only given a handful of interviews.
Age: 29
Net worth: $3.6 billion
Industry: tech
Evan Spiegel cofounded multimedia messaging app Snapchat with Murphy. He and Murphy each own roughly 18% of Snap, but have voting shares that allow them control over the board. He's only one of three self-made billionaires in the world not yet 30 and has donated nearly $65 million in Snap stock.
Spiegel is married to supermodel Miranda Kerr.
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