Houston oil tycoon Jeffery Hildebrand is the eighth-richest Texan, and the 51st most affluent person in the United States, Forbes says. Photo by Anthony Rathbun

Austin's Elon Musk and Michael Dell are the richest people in Texas, but Houston billionaires are not far behind, according to the newForbes 400, a list of the 400 richest people in the United States for 2023.

Houston oil tycoon Jeffery Hildebrand is the eighth-richest Texan, and the 51st most affluent person in the United States, Forbes says.

According to Forbes, Hildebrand's net worth in 2023 is estimated at $13.7 billion, which has steadily climbed from his 2022 net worth of $11 billion. Hildebrand, 64, co-founded Hilcorp Energy Company in 1990, and serves as the chairman and CEO after buying out his partner's stake for $500 million. The company has been hard at work expanding its foothold in the oil industry over the last three decades.

"In 2020 Hilcorp finalized the $5.6 billion acquisition of BP's assets in Alaska," Forbes wrote in Hildebrand's profile. "He has built Hilcorp into America's biggest privately owned oil company (by production volumes)."

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

Forbes' list, published October 3, is a definitive ranking of the wealthiest Americans, using interviews, financial data, and documentation provided by billionaires and their companies.

According to the report, America's elite class is now worth $4.5 trillion total, which ties a record previously set in 2021.

Unsurprisingly, Musk ranks No. 1 nationally, with a net worth of $251 billion.

Here's how the rest of Houston's billionaires fared on this year's list:

  • Houston hospitality king and Rockets owner Tilman Fertitta ranks 114th nationally with an estimated net worth of $8 billion.
  • Oil and gas chairman Richard Kinder ranks No. 123 nationally with an estimated worth of $7.5 billion.
  • Houston pipeline heirs Dannine Avara, Scott Duncan, Milane Frantz, and Randa Duncan Williams tie for 128th nationally. Each has an estimated net worth of $7.4 billion.
  • Toyota mega-dealer Dan Friedkin ties for 184th nationally with an estimated net worth of $5.7 billion.
  • Houston Texans owner Janice McNair ties for No. 192 nationally with an estimated net worth of $5.6 billion.
  • Local hedge fund honcho John Arnold ranks 345th nationally with an estimated net worth of $3.3 billion.
  • Energy exploration chief exec George Bishop of The Woodlands ranks No. 356 with an estimated net worth of $3.2 billion.
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This article originally ran on CultureMap.
Jeffery and Mindy Hildebrand are noted for their service to employees and community. Photo by Anthony Rathbun

Local billionaires Jeffery Hildebrand and Tilman Fertitta top list of richest in Houston, per Forbes

meet the billionaires

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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Houston company wins AHA competition for pediatric heart valve design

winner, winner

Houston-based PolyVascular, which develops minimally invasive solutions for children with congenital heart disease, was named the overall winner of the American Heart Association’s annual Health Tech Competition earlier this month.

The company was founded in 2014 by Dr. Henri Justino and Daniel Harrington and was part of TMCi's 2017 medical device cohort. It is developing the first polymer-based transcatheter pulmonary valve designed specifically for young children, allowing for precise sizing and redilation as the child grows while also avoiding degradation. PolyVascular has completed preclinical studies and is working toward regulatory submissions, an early feasibility study and its first-in-human clinical trial thanks to a recent SBIR grant from the National Heart, Lung, and Blood Institute.

With the new AHA honor, PolyVascular will be invited to join the association’s Center for Health Technology & Innovation Innovators’ Network, which connects entrepreneurs, providers and researchers to share and advance innovation in cardiovascular and brain health.

“This is a tremendous honor for PolyVascular—we’re especially proud to bring hope to families and children living with congenital heart defects,” Justino said in a news release. “Our technology—a minimally invasive valve that can be expanded over time to grow with the child—has the potential to dramatically reduce the need for repeated open-heart surgeries.”

The Health Tech Competition is a live forum for health care innovators to present their digital solutions for treating or preventing cardiovascular diseases and stroke.

Finalists from around the world addressed heart failure, hypertension, congenital heart defects and other issues that exist in cardiovascular, brain and metabolic health. Solutions were evaluated on the criteria of validity, scientific rigor and impact.

The judges included Texas-based Dr. Eric D. Peterson, professor of medicine in the division of cardiology at UT Southwestern Medical Center, and Dr. Asif Ali, clinical associate professor of cardiovascular medicine at the University of Texas Medical School in Houston and director at Cena Research Institute.

According to the American Heart Association, nearly half of U.S. adults live with some form of cardiovascular disease or stroke.

“The American Heart Association plays a pivotal role in advancing innovative care pathways, and we’re excited that our solution aligns with its guidelines and mission,” Justino said in a news release. “It’s time these life-changing technologies reach the youngest patients, just as they already do for adults.”

EO Houston is where ambitious founders go to scale smarter

Don't Go It Alone

Scaling a business from early traction into true growth is one of the most exciting — and punishing — chapters of entrepreneurship. Houston founders know this better than most. Our city is built on ambition: fast-moving industries, talent from around the world, and opportunities that expand as large as the Texas sky.

But as many entrepreneurs eventually learn, scaling isn’t simply “more of what worked.” It requires new systems, new thinking, and often, a new version of the founder. Even the most capable founders eventually face decisions, pressures, and turning points that only other entrepreneurs can truly understand.

Entrepreneurs’ Organization, a global peer-to-peer network of more than 18,000 business owners across 220 chapters in 75+ countries, exists for exactly this stage. One of the largest chapters in the organization, EO Houston brings that global community to life locally, offering founders the connection, learning, and accountability needed to grow sustainably and to grow up as leaders.

A community where founders learn at the highest level
The real value of EO emerges in the lived experiences of other entrepreneurs. When Houston-area founders talk about the moments growth nearly broke their companies, a universal theme appears: you can’t do it alone.

EO Houston member Robert De Los Santos of Sky High Party Rentals learned this the hard way when rapid post-COVID growth made expansion feel limitless — until it wasn’t.

“After COVID, we doubled every year and assumed inventory was the limit. In 2023 we overbought, only to realize demand had peaked. That taught us a hard truth: growth in one city has ceilings. Expanding into Austin and Dallas — the Texas Triangle — gave us new markets to put our inventory to work while we figured out how to penetrate Houston better. The challenge shifted from a strategy of ‘buy more units for demand’ to learning how to tackle the challenges of ‘leading across cities.’”

Founders often enter EO exhausted from trying to maintain control as things grow more complex. Many discover, like Jarred King of Summit Firms, that scaling requires the difficult shift from doing everything to building the team that can.

“We grew quickly because of my network, relationships, and hustle… but I was doing all the work,” King says. “I realized at that point you have to delegate — not just busy work, but important decisions to your key team, as well as set up really effective SOPs.”

“The uncomfortable truth is that you are no longer the best person for most jobs in your company," agrees Darren Randle of Houston Tents & Events. "Your inability to delegate or hire people smarter than you in key leadership and management level roles will become the single biggest drag on the entire business. You have to accept that your original 'hustle' is now a scalability risk."

Making hard decisions, such as walking away from customers or contracts, can feel like less of a sting when you know others have also been faced with tough choices. Aaron Gillaspie of West U's My Salon Suite recalls, “You can’t be everything to everyone, it’s ok to say no, and just understand some customers aren’t the right fit. It’s a two way street and both must win.”

Perspective is perhaps the most important reality check that members find at EO.

“Bigger volume will not make problems go away — you just got to get used to walking the tightrope," says Roger Pombrol of Emerald Standard. "Develop a system for good balance and do not freak out. Scared is no way to live your life. It’s ok if you fall. Your family will still love you. Money is just money. Love is love. The world tries to make you conflate them, but don’t."

Actionable insights from entrepreneurs who’ve already scaled
Conversations like these are happening every month inside EO Forum Meeting. Each EO chapter is divided into several small Forums. These confidential, committed group of 7–10 entrepreneurs who meet to share the real five percent of what they’re experiencing. It’s not advice, but experience — shared candidly, respectfully, and with the kind of vulnerability that leads to breakthroughs.

What makes Forum so impactful is the honesty it draws out. Entrepreneurs are often surrounded by employees, partners, and even family members who rely on them for answers, but seldom do they have a group where vulnerability is not only welcomed, but expected.

Learning experiences that match your ambition
EO supports that growth far beyond peer groups. Through the organization’s global partnerships with institutions like Harvard, Oxford, and INSEAD, Houston members gain access to executive-level learning experiences designed specifically for entrepreneurs.

These programs help founders step out of the day-to-day and think strategically about competitive advantage, innovation, and organizational leadership. Paired with ongoing learning through EO Jumpstart, Nano Learning, and its global library of member-created content, founders stay informed, challenged, and ahead of emerging trends.

And through global communities — ranging from EO Women and EO Under 35 to industry-specific groups — Houston members tap into expertise that spans continents and sectors. Whether someone is navigating M&A, exploring international expansion, or integrating new technologies, the right perspectives are always within reach.

What truly distinguishes EO Houston, however, is its culture. Houston’s entrepreneurial landscape is uniquely diverse and resilient, filled with founders who are hungry to build, innovate, and elevate the city’s business community. EO Houston amplifies that spirit, creating relationships that are as supportive as they are strategic. Many members describe the chapter not simply as a network, but as a catalyst for becoming better leaders, better thinkers, and — just as importantly — better human beings.

Your next level starts here
For entrepreneurs who are ready to scale—beyond their first million, beyond their current comfort zone, and toward a future that requires sharper leadership and stronger community—EO Houston offers an unmatched platform. It is a place where ambitious founders grow faster, think bigger, and gain the confidence to take bold next steps.

If you’re ready to elevate your business and your leadership alongside people who understand the journey, EO Houston is ready to welcome you. Your next level starts with the peers who can help you reach it. Learn more and become a member here.

3 Houston companies land on Deloitte’s Technology Fast 500 list

trending up

Three Houston companies have made this year’s Deloitte North America Technology Fast 500 list.

The report ranks the fastest-growing technology, media, telecommunications, life sciences, fintech, and energy tech companies in North America. The Houston companies to make the list, along with their revenue growth rates from 2021-2024, include:

  • No. 16 Action1 Corp., a provider of cybersecurity software. Growth rate: 7,265 percent
  • No. 92 Cart.com, a commerce and logistics platform. Growth rate: 1,053 percent
  • No. 312 Tellihealth, a remote health care platform. Growth rate: 244 percent

“Houston’s unique blend of entrepreneurial energy and innovation continues to strengthen the local business community, and I’m thrilled to see Houston companies honored on the 2025 Deloitte Technology Fast 500 list. Congratulations to all the winners,” said Melinda Yee, managing partner in Deloitte’s Houston office.

Action1 is no stranger to lists like the Deloitte Technology Fast 500. For instance, the company ranked first among software companies and 29th overall on this year’s Inc. 5000, a list of the country’s fastest-growing private companies. Its growth rate from 2021 to 2024 reached 7,188 percent.

Mike Walters, president and co-founder of Action1, said in August that the Inc. 5000 achievement “reflects the dedication of Action1’s global team, who continue to execute against an ambitious vision: a world where cyberattacks exploiting vulnerabilities are entirely prevented across all types of devices, operating systems, and applications.”

Atlanta-based Impericus, operator of an AI-powered platform that connects health care providers with pharmaceutical and life sciences companies, topped the Deloitte list with a 2021-24 growth rate of 29,738 percent.

“Our mission is to set the standard for ethical AI-powered physician connections to pharma resources, accelerating and expanding patient access to needed treatments,” said Dr. Osama Hashmi, a dermatologist who’s co-founder and CEO of Impiricus. “As we continue to innovate quickly, we remain committed to building ethical bridges across this vital ecosystem.”