Jeffery and Mindy Hildebrand are noted for their service to employees and community. Photo by Anthony Rathbun

According to Forbes, half of all of the world’s billionaires are less wealthy than they were in 2022. But that’s not the case for most Houston-area billionaires like oil tycoon Jeffery Hildebrand, who was named the richest man in the city.

The 2023 edition of Forbes’ World’s Billionaires List declared Hildebrand’s net worth at $10.2 billion, placing him as the 171st richest person in the world. His fortune is $2.7 billion higher than his 2022 net worth of $7.5 billion, when he ranked No. 316 on the list.

As CultureMap reported, in 2015, Hildebrand made headlines when he gifted each of his 1,381 employees a $100,000 holiday bonus.

Houston’s favorite hospitality mogul and Rockets owner Tilman Fertitta is the city’s second-richest man, with his net worth climbing up to $8.1 billion. He ranked No. 256 on Forbes’ list, substantially higher than his No. 471 rank in 2022 when his net worth was $5.6 billion. Fertitta is surely living life to the fullest after hosting Miami rapper Pitbull at his San Luis Salute celebration earlier this year.

Tilman Fertitta Shut Up and Listen book laughing

Tilman Fertitta is sitting pretty at No. 2. Photo by J. Thomas Ford

Other Houston-area billionaires that made Forbes 2023 world’s richest list are:

  • Pipeline magnate Richard Kinder: tied for No. 317, $7.2 billion, down from $7.5 billion
  • Houston siblings and pipeline heirs Dannine Avara, Scott Duncan, Milane Frantz, and Randa Duncan Williams: all tied for No. 352, $6.8 billion, up from $6.6 billion
  • Toyota mega-dealer Dan Friedkin: tied for No. 466, $5.5 billion, up from $4.3 billion
  • Houston Texans owner Janice McNair: tied for No. 534, $5 billion, up from $4.2 billion
  • Hedge fund honcho John Arnold: tied for No. 878, $3.3 billion, unchanged since 2018
  • Energy exploration chief exec George Bishop: tied for No. 982, $3 billion, up from $2.7 billion
New to the 2023 report is Kamal Ghaffarian, the co-founder and executive chairman of Houston's Axiom Space, with a net worth of $2.1 billion. Though his LinkedIn notes that he is based in Maryland, reports add that he resides in Florida. His Forbes rank is No. 1434.An honorable mention (and billionaire newbie) is Amy Adams Strunk, the controlling owner of the Tennessee Titans and daughter of Houston Oilers owner Bud Adams. She has a residence in Waller (about 40 miles northwest of Houston) and her net worth is $1.7 billion — making her No. 1725 on the list.One name missing from Forbes 2023 report is software entrepreneur Robert Brockman, who passed away last August. Brockman fell from grace after he was charged in the largest tax fraud case in U.S. history in 2020. Forbes listed his 2022 net worth at $4.7 billion. He is survived by his wife, son, and two grandchildren.Elsewhere in Texas, Elon Musk reigns as the richest man in the state and in its capital city of Austin with a net worth of $180 billion. The Tesla and Space-X founder is the second richest person in the world, wedging his way between No. 1 Bernard Arnault of France (overseer of the LVMH empire of 75 fashion and cosmetics brands, including Louis Vuitton and Sephora), with a net worth of $211 billion; and No. 3 Jeff Bezos, the American Amazon founder, worth $114 billion.

Dallas Cowboys owner Jerry Jones'$13.3 billion net worth won him the title of Dallas' richest person, and the 12th richest sports owner on Forbes' "World's Richest Sports Owners 2023." His net worth is up from $10.6 billion last year.

The Fort Worth-based Walmart family heiress Alice Walton earned a spot on Forbes’ list as the third richest woman in the world. Her fortune is pegged at $56.7 billion, down slightly from $65.3 billion last year.

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This article originally ran on CultureMap.

Richard Kinder once again lands on this prestigious list. Photo courtesy of BBVA

11 Houston billionaires join Elon Musk on Forbes' list of the world's richest

mo' money

In the battle of the world’s billionaires, a newly minted Texan comes out on top — and nearly a dozen Houstonians fare quite well.

Forbes magazine’s new ranking of the world’s richest people puts Texas transplant Elon Musk at No. 1, with a net worth of $219 billion. That’s up from $151 billion in 2021, $24.6 billion in 2020, $22.3 billion in 2019, and $19.9 billion in 2018. The CEO of Austin-based vehicle manufacturer Tesla and leader of a host of other businesses, Musk was ranked second on Forbes’ 2021 list. He sat behind Amazon founder Jeff Bezos, whose net worth in 2021 was pegged at $177 million. This year, Forbes estimates Bezos’ net worth is $171 billion.

Here in Houston, 11 locals land on the prestigious list. They are:

  • Oil mogul Jeffery Hildebrand: tied for No. 316, $7.5 billion, up from $2 billion
  • Pipeline magnate Richard Kinder: tied for No. 316, $7.5 billion, up from $7 billion
  • Houston siblings and pipeline heirs Dannine Avara, Scott Duncan, Milane Frantz, and Randa Duncan Williams: each tied for No. 375, $6.6 billion, up from $6 billion
  • Hospitality titan and Houston Rockets owner Tilman Fertitta: tied for No. 471, $5.6 billion, up from $4.6 billion
  • Houston software entrepreneur Robert Brockman: tied for No. 601, $4.7 billion, down from $6 billion
  • Toyota mega-dealer Dan Friedkin: tied for No. 665, $4.3 billion, up from $4.1 billion
  • Houston Texans owner Janice McNair: tied for No. 687, $4.2 billion, up from $4.1 billion
  • Hedge fund honcho John Arnold: tied for No. 913, $3.3 billion, unchanged from last year

Meanwhile, Nearly 30 other Texans appear in this year’s top 1,000. Here, they are grouped by where they live and their global ranking, 2022 net worth, and 2021 net worth.

Austin

  • Elon Musk, founder and CEO of Tesla: No. 1, $219 billion, up from $151 billion
  • Michael Dell, founder, chairman, and CEO of Round Rock-based Dell Technologies: No. 24, $55.1 billion, up from $45.1 billion
  • Venture capitalist Robert Smith: tied for No. 369, $6.7 billion, up from $6 billion
  • Tito’s Vodka baron Bert “Tito” Beveridge: tied for No. 637, $4.5 billion, down from $4.6 billion
  • Tech entrepreneur Thai Lee: tied for No. 709, $4.1 billion, up from $3.2 billion

Dallas

  • Dallas Cowboys owner Jerry Jones: tied for No. 185, $10.6 billion, up from $8.9 billion
  • Banking and real estate kingpin Andy Beal: tied for No. 201, $9.9 billion, up from $7.9 billion
  • Oil and real estate titan Ray Lee Hunt: tied for No. 386, $6.5 billion, up from $4.2 billion
  • Money manager Ken Fisher: tied for No. 509, $5.3 billion, down from $5.5 billion
  • Media magnate and Dallas Mavericks owner Mark Cuban: tied for No. 601, $4.7 billion, up from $4.4 billion
  • Oil and gas guru Trevor Rees-Jones: tied for No. 637, $4.5 billion, up from $4 billion
  • Hotel and investment titan Robert Rowling: tied for No. 637, $4.5 billion, up from $3.9 billion
  • Oil baron W. Herbert Hunt: tied for No. 665, $4.3 billion, up from $2 billion
  • Margot Birmingham Perot: widow of tech and real estate entrepreneur H. Ross Perot Sr., tied for No. 665, $4.3 billion, up from $4.1 billion
  • Oil and gas tycoon Kelcy Warren: tied for No. 728, $4 billion, up from $3.4 billion
  • Real estate bigwig H. Ross Perot, Jr.: tied for No. 951, $3.2 billion, up from $1.6 billion

Fort Worth

  • Walmart heiress Alice Walton: No. 18, $65.3 billion, up from $61.8 billion
  • Oil and investment guru Robert Bass: tied for No. 536, $5.1 billion, unchanged from last year
  • Private equity magnate David Bonderma: tied for No. 637, $4.5 billion, up from $4.1 billion
  • Investor and oilman Sid Bass: tied for No. 883, $3.4 billion, up from $2.9 billion

Elsewhere in Texas

  • Sports and entertainment mogul Stan Kroenke (Vernon): tied for No. 183, $10.7 billion, up from $8.2 billion
  • Walmart heiress Ann Walton Kroenke (Vernon): tied for No. 227, $9 billion, up from $8.4 billion
  • Oil tycoon Autry Stephens (Midland): tied for No. 552, $5 billion, not previously ranked

“The tumultuous stock market contributed to sharp declines in the fortunes of many of the world’s richest,” Kerry A. Dolan, assistant managing editor of Wealth at Forbes, says of this year’s ranking. “Still, more than 1,000 billionaires got wealthier over the past year. The top 20 richest alone are worth a combined $2 trillion, up from $1.8 trillion in 2021.”

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This article originally ran on CultureMap.

Pipeline mogul and Memorial Park benefactor Richard Kinder (pictured with his wife, Nancy) leads the Houston billionaires. Photo by Michelle Watson/Catchlight Group

Houston billionaires named to Forbes' list of richest Americans for 2019

Seeing dollar signs

Who's the richest person in Texas? That title once again goes to Walmart heiress Alice Walton, of Fort Worth, according to the newly released Forbes 400 ranking. But seven very wealthy Houstonians also appear on the list of the 400 richest people in the country right now.

The top Houstonian on the list is Houston pipeline mogul Richard Kinder, who is tied with another Walmart heiress, Ann Walton Kroenke, for sixth place in Texas and No. 67 nationally. Forbes estimates they're each worth $7.5 billion.

The other Houston billionaires on the list are:

  • Randa Duncan Williams and her siblings Dannine Avara, Scott Duncan, and Milane Frantz, all of whom live in Houston. Each boasts an estimated net worth of $6.3 billion, tying them for the eighth place in Texas and 100th place nationally.
  • Restaurant mogul and Houston Rockets owner Tilman Fertitta, $4.9 billion. Tied for 15th in Texas and No. 140 in U.S.
  • Toyota titan Dan Friedkin, $4 billion. Tied for No. 21 in Texas. Tied for No. 187 in U.S.
  • Houston Texans co-founder Janice McNair, widow of businessman and Texans co-founder Bob McNair, $4 billion. Tied for No. 21 in Texas and No. 187 in U.S.
  • Energy executive Jeffery Hildebrand, $3.8 billion. No. 23 in Texas. Tied for No. 207 in U.S.
  • Former hedge fund manager John Arnold, $3.3 billion. No. 26 in Texas. No. 261 in U.S.
  • Energy mogul George Bishop of The Woodlands, $2.4 billion. Tied for No. 33 in Texas and No. 355 in U.S.

With an estimated net worth at $51.4 billion, Walton is the 11th richest person in the country (and the richest person in the Lone Star State). Second in line is Austin's Michael Dell, founder, chairman, and CEO of Round Rock-based Dell Technologies, who notches a net worth of $32.3 billion, which puts him at No. 18 on the list of America's billionaires. Holding down third place in Texas and 48th in the U.S. is Dallas banker and real estate titan Andy Beal, with an estimated net worth of $9.8 billion.

This year, Dallas Cowboys owner Jerry Jones got muscled out of the No. 4 spot in Texas by Stan Kroenke, whose professional sports holdings include the NFL's Los Angeles Rams. The estimated net worth of Kroenke, who owns a 520,000-acre ranch west of Wichita Falls, is $9.7 billion, compared with $8.6 billion for Jones. That puts Kroenke in 49th place and Jones in 56th place among the richest Americans.

Here are the other Texans who made it onto this year's Forbes 400, in order of ranking:

  • Omni Hotels and Gold's Gym king Robert Rowling of Dallas. $5.5 billion. No. 12 in Texas. Tied for No. 119 in U.S.
  • Oil and gas heir Ray Lee Hunt of Dallas. $5.2 billion No. 13 in Texas. No. 127 in U.S.
  • Venture capital entrepreneur Robert Smith of Austin. $5 billion. No. 14 in Texas. Tied for No. 131 in U.S.
  • Oil heir Robert Bass of Fort Worth. $4.9 billion. Tied for No. 15 in Texas and No. 140 in U.S.
  • Pipeline executive Kelcy Warren of Dallas. $4.3 billion. No. 17 in Texas. Tied for No. 159 in U.S.
  • Vodka tycoon Bert "Tito" Beveridge of Austin. $4.2 billion. Tied for No. 18 in Texas and No. 168 in U.S.
  • Margot Birmingham Perot of Dallas, widow of tech entrepreneur H. Ross Perot. $4.2 billion. Tied for No. 18 in Texas and No. 168 in U.S.
  • Tech entrepreneur and Dallas Mavericks owner Mark Cuban of Dallas. $4.1 billion. No. 20 in Texas. Tied for No. 179 in U.S.
  • Private equity giant David Bonderman of Fort Worth. $3.7 billion. Tied for No. 24 in Texas and No. 217 in U.S.
  • Oil and gas chief Trevor Rees-Jones of Dallas. $3.7 billion. Tied for No. 24 in Texas and No. 217 in U.S.
  • Investor and oil heir Sid Bass of Fort Worth. $3.1 billion. Tied for No. 27 in Texas and No. 275 in U.S.
  • John Paul DeJoria of Austin. $3.1 billion. Tied for No. 27 in Texas and No. 275 in U.S.
  • Tech entrepreneur Thai Lee of Austin. $3 billion. Tied for No. 29 in Texas and No. 287 in U.S.
  • Software entrepreneur Joe Liemandt of Austin. $3 billion. Tied for No. 29 in Texas and No. 287 in U.S.
  • Oil heir W. Herbert Hunt of Dallas. $2.6 billion. Tied for No. 31 in Texas and No. 333 in U.S.
  • Investor and former grocery distributor Drayton McLane Jr. of Temple. $2.6 million. Tied for No. 31 in Texas and No. 333 in U.S.
  • Hearing-aid titan Bill Austin of Brownsville. $2.4 billion. Tied for No. 33 in Texas and No. 355 in U.S.
  • Energy entrepreneur and Texas Rangers co-owner Ray Davis of Dallas. $2.3 billion. Tied for No. 35 in Texas and No. 363 in U.S.
  • Big-time banker Gerald Ford of Dallas. $2.3 billion. Tied for No. 35 in Texas and No. 363 in U.S.
  • Oil heir Edward Bass of Fort Worth. $2.2 billion. Tied for No. 37 in Texas and No. 370 in U.S.
  • Oil heir Lee Bass of Fort Worth. $2.2 billion. Tied for No. 37 in Texas and No. 370 in U.S.
  • Real estate developer H. Ross Perot Jr. of Dallas. $2.2 billion. Tied for No. 37 in Texas and No. 370 in U.S.
  • Private equity entrepreneur Brian Sheth of Austin. $2.2 billion. Tied for No. 37 in Texas and No. 370 in U.S.
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This article originally ran on CultureMap.

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7 innovative startups that are leading the energy transition in Houston

meet the finalists

Houston has long been touted as the energy capital of the world, and it's now it's also a leading player in the energy transition — home to numerous startups and innovators working toward a cleaner future.

As part of the 2025 Houston Innovation Awards, our Energy Transition Business category honors innovative startups that are providing solution within renewables, climatetech, clean energy, alternative materials, circular economy, and more.

Seven energy transition companies have been named finalists for the 2025 award. They range from a spinoff stimulating subsurface hydrogen from end-of-life oil fields to a company converting prickly pear cactus biogas into energy.

Read more about these climatetech businesses, their founders, and their green initiatives below. Then join us at the Houston Innovation Awards on Nov. 13 at Greentown Labs, when the winner will be unveiled at our live awards ceremony.

Tickets are now on sale for this exclusive event celebrating all things Houston Innovation.

Anning Corporation

Clean energy company Anning Corporation is working to develop geologic hydrogen, a natural carbon-free fuel, using its proprietary stimulation approaches and advanced exploration modeling. The company said that geologic hydrogen has the potential to be the lowest-cost source of reliable baseload electricity in the U.S.

The company was founded by CEO Sophie Broun in 2024 and is a member of Greentown Labs. Last month, it also announced that it was chosen to participate in Breakthrough Energy’s prestigious Fellows Program. Anning raised a pre-seed round this year and is currently raising a $6 million seed round.

Capwell Services

Houston-based methane capture company Capwell Services works to eliminate vented oil and gas emissions economically for operators. According to the company, methane emissions are vented from most oil and gas facilities due to safety protocols, and operators are not able to capture the gas cost-effectively, leading operators to emit more than 14 million metric tons of methane per year in the U.S. and Canada. Founded in 2022, Capwell specializes in low and intermittent flow vents for methane capture.

The company began as a University of Pennsylvania senior design project led by current CEO Andrew Lane. It has since participated in programs with Greentown Labs and Rice Clean Energy Accelerator. The company moved to Houston in 2023 and raised a pre-seed round. It has also received federal funding from the DOE. Capwell is currently piloting its commercial unit with oil and gas operators.

Deep Anchor Solutions

Offshore energy consulting and design company Deep Anchor Solutions aims to help expedite the adoption of floating offshore energy infrastructure with its deeply embedded ring anchor (DERA) technology. According to the company, its patented DERA system can be installed quietly without heavy-lift vessels, reducing anchor-related costs by up to 75 percent and lifecycle CO2 emissions by up to 80 percent.

The company was founded in 2023 by current CEO Junho Lee and CTO Charles Aubeny. Lee earned his Ph.D. in geotechnical engineering from Texas A&M University, where Aubeny is a professor of civil and environmental engineering. The company has participated in numerous accelerators and incubators, including Greentown Labs, MassChallenge, EnergyTech Nexus LiftOff, and others. Lee is an Activate 2025 fellow.

Eclipse Energy

Previously known as Gold H2, Eclipse Energy converts end-of-life oil fields into low-cost, sustainable hydrogen sources. It completed its first field trial this summer, which demonstrated subsurface bio-stimulated hydrogen production. According to the company, its technology could yield up to 250 billion kilograms of low-carbon hydrogen, which is estimated to provide enough clean power to Los Angeles for over 50 years and avoid roughly 1 billion metric tons of CO2 equivalent.

Eclipse is a spinoff of Houston biotech company Cemvita. It was founded in 2022 by Moji Karimi (CEO and chairman of Cemvita), Prabhdeep Sekhon (CEO of Eclipse), Tara Karimi, and Rayyan Islam. The company closed an $8 million series A this year and has plans to raise another round in 2026.

Loop Bioproducts

Agricultural chemical manufacturing company Loop Bioproducts leverages the physiology of prickly pear cactus grown in Texas to produce bioenergy, food, and remediate industrial wastewater streams. The company uses its remote sensing technology, proprietary image-based machine learning model, and R&D innovation to capture raw biogas from the cactuses and is focused on scaling cactuses as an industrial crop on land.

Rhiannon Parker founded Loop Bioproducts in 2023.

Mars Materials

Clean chemical manufacturing business Mars Materials is working to convert captured carbon into resources, such as carbon fiber and wastewater treatment chemicals. The company develops and produces its drop-in chemical products in Houston and uses an in-licensed process for the National Renewable Energy Lab to produce acrylonitrile, which is used to produce plastics, synthetic fibers, and rubbers. The company reports that it plans to open its first commercial plant in the next 18 months.

Founded in 2019 by CEO Aaron Fitzgerald, CTO Kristian Gubsch, and lead engineer Trey Sheridan, the company has raised just under $1 million in capital and is backed by Bill Gates’ Breakthrough Energy, Shell, Black & Veatch, and other organizations.

Solidec

Chemical manufacturing company Solidec has developed autonomous generators that extract molecules from water and air and converts them into pure chemicals and fuels that are free of carbon emissions onsite, eliminating the need for transport, storage, and permitting. The company was founded around innovations developed by Rice University associate professor Haotian Wang.

The company was selected for the Chevron Technology Ventures’ catalyst program, Greentown Labs, NSF I-Corps and was part of the first cohort of the Activate Houston program. It won first place at the 2024 startup pitch competition at CERAWeek. Solidec was founded in 2023 by Wang, who serves as chief scientist, CEO Ryan DuChanois, and CTO Yang Xia. It closed a $2.5 million seed round earlier this year.

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The Houston Innovation Awards program is sponsored by Houston Community College, Houston Powder Coaters, FLIGHT by Yuengling, and more to be announced soon. For sponsorship opportunities, please contact sales@innovationmap.com.

Rice University team develops eco-friendly method to destroy 'forever chemicals' in water

clean water research

Rice University researchers have teamed up with South Korean scientists to develop the first eco-friendly technology that captures and destroys toxic “forever chemicals,” or PFAS, in water.

PFAS have been linked to immune system disruption, certain cancers, liver damage and reproductive disorders. They can be found in water, soil and air, as well as in products like Teflon pans, waterproof clothing and food packaging. They do not degrade easily and are difficult to remove.

Thus far, PFAS cleanup methods have relied on adsorption, in which molecules cling to materials like activated carbon or ion-exchange resins. But these methods tend to have limited capacity, low efficiency, slow performance and can create additional waste.

The Rice-led study, published in the journal Advanced Materials, centered on a layered double hydroxide (LDH) material made from copper and aluminum that could rapidly capture PFAS and be used to destroy the chemicals.

The study was led by Rice professor Youngkun Chung, a postdoctoral fellow under the mentorship of Michael S. Wong. It was conducted in collaboration with Seoktae Kang, professor at the Korea Advanced Institute of Science and Technology, and Keon-Ham Kim, professor at Pukyung National University, who first discovered the LDH material.

The team evaluated the LDH material in river water, tap water and wastewater. And, according to Rice, that material’s unique copper-aluminum layers and charge imbalances created an ideal binding environment to capture PFAS molecules.

“To my astonishment, this LDH compound captured PFAS more than 1,000 times better than other materials,” Chung, lead author of the study and now a fellow at Rice’s WaTER (Water Technologies, Entrepreneurship and Research) Institute and Sustainability Institute, said in a news release. “It also worked incredibly fast, removing large amounts of PFAS within minutes, about 100 times faster than commercial carbon filters.”

Next, Chung, along with Rice professors Pedro Alvarez and James Tour, worked to develop an eco-friendly, sustainable method of thermally decomposing the PFAS captured on the LDH material. They heated saturated material with calcium carbonate, which eliminated more than half of the trapped PFAS without releasing toxic by-products.

The team believes the study’s results could potentially have large-scale applications in industrial cleanups and municipal water treatments.

“We are excited by the potential of this one-of-a-kind LDH-based technology to transform how PFAS-contaminated water sources are treated in the near future,” Wong added in the news release. “It’s the result of an extraordinary international collaboration and the creativity of young researchers.”

Axiom Space announces new CEO amid strategic leadership change

new leader

Six months after promoting Tejpaul Bhatia from chief revenue officer to CEO, commercial space infrastructure and human spaceflight services provider Axiom Space has replaced him.

On Oct. 15, Houston-based Axiom announced Jonathan Cirtain has succeeded Bhatia as CEO. Bhatia joined Axiom in 2021. Cirtain remains the company’s president, a role he assumed in June, according to his LinkedIn profile.

In a news release, Axiom said Cirtain’s appointment as CEO is a “strategic leadership change” aimed at advancing the company’s development of space infrastructure.

Axiom hired Cirtain as president in June, according to his LinkedIn profile. The company didn’t publicly announce that move.

Kam Ghaffarian, co-founder and executive chairman of Axiom, said Cirtain’s “proven track record of leadership and commitment to excellence align perfectly with our mission of building era-defining space infrastructure that will drive exploration and fuel the global space economy.”

Aside from praising Cirtain, Ghaffarian expressed his “sincere gratitude” for Bhatia’s work at Axiom, including his leadership as CEO during “a significant transition period.”

Bhatia was promoted to CEO in April after helping Axiom gain more than $1 billion in contracts, Space News reported. He succeeded Ghaffarian as CEO. Axiom didn’t indicate whether Bhatia quit or was terminated.

Cirtain, an astrophysicist, was a senior executive at BWX Technologies, a supplier of nuclear components and fuel, for eight years before joining Axiom. Earlier, Cirtain spent nearly nine years in various roles at NASA’s Marshall Space Flight Center in Huntsville, Alabama. He previously co-founded a machine learning company specializing in Earth observation.

“Axiom Space is pioneering the commercialization of low-Earth orbit infrastructure while accelerating advancements in human spaceflight technologies,” Cirtain said. “I look forward to continuing our team’s important work of driving innovation to support expanded access to space and off-planet capabilities that will underpin the future of space exploration.”

Among other projects, Axiom is developing the world’s first commercial space station, creating next-generation spacesuits for astronauts and sending astronauts on low-Earth orbit missions.