Houston lands 27 Fortune 500 headquarters, led by energy heavyweights

HQ leader

Houston is tied with Chicago for the second-most Fortune 500 headquarters. Photo via Getty Images

Editor's note: This article has been updated to correct the number of companies based in the Dallas-Fort Worth area.

Houston is a giant among U.S. hubs for corporate headquarters.

The 2026 Fortune 500 lists 27 companies based in the Houston area, with many energy companies claiming top spots. Houston ties with Chicago for the second-most Fortune 500 headquarters, preceded only by New York City (53). Dallas-Fort Worth is home to 24 Fortune 500 headquarters.

Texas leads the nation for Fortune 500 headquarters (57), with California in the No. 2 spot and New York at No. 3.

“Texas is the undisputed headquarters of headquarters,” Gov. Greg Abbott said in a news release. “The world’s leading businesses invest with confidence in Texas because of our welcoming business climate, predictable regulatory environment, and skilled and growing workforce. People and businesses are choosing Texas because Texas works.”

The 2026 Fortune 500 ranks the largest U.S. corporations based on revenue in fiscal year 2025.

Here’s a rundown of the 27 Fortune 500 companies based in the Houston area.

No. 9 ExxonMobil
No. 21 Chevron
No. 29 Phillips 66
No.55 Sysco
No. 75 ConocoPhillips
No. 89 Enterprise Products Partners
No. 103 Plains GP Holdings
No. 133 Hewlett Packard Enterprise
No. 149 NRG Energy
No. 157 Quanta Services
No. 164 Baker Hughes
No. 173 Occidental Petroleum
No. 179 Waste Management
No. 201 EOG Resources
No. 204 Group 1 Automotive
No. 207 Halliburton
No. 223 Cheniere Energy
No. 236 Corebridge Financial
No. 262 Targa Resources
No. 266 Kinder Morgan
No. 388 Westlake
No. 435 CenterPoint Energy
No. 438 APA
No. 440 Comfort Systems USA
No. 455 NOV
No. 488 KBR
No. 496 Coterra Energy. Oklahoma City, Oklahoma-based Devon Energy and Houston-based Coterra Energy merged in early May, with the combined company retaining the Devon Energy name and the Houston headquarters.

The Greater Houston Partnership notes the Houston area soon will welcome its 28th Fortune 500 company. Expand Energy (formerly Chesapeake Energy), appearing at No. 362 on the 2026 list, says it’s moving its headquarters from Oklahoma City to Spring this year.

As the natural gas producer prepares to relocate to Texas, it’s hunting for a new leader. Nick Dell’Osso stepped down as president and CEO earlier this year. Board Chairman Michael Wichterich is interim president and CEO.

Dell’Osso became president and CEO of Oklahoma City-based Gulfport Energy effective May 28.

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Twenty-six Houston-area companies landed on the latest Fortune 500 list. Photo via Getty Images

Houston earns No. 3 spot among cities with most Fortune 500 headquarters

biggest companies

Houston maintained its No. 3 status this year among U.S. metro areas with the most Fortune 500 headquarters. Fortune magazine tallied 26 Fortune 500 headquarters in the Houston area, behind only the New York City area (62) and the Chicago area (30).

Last year, 23 Houston-area companies landed on the Fortune 500 list. Fortune bases the list on revenue that a public or private company earns during its 2024 budget year.

On the Fortune 500 list for 2025, Spring-based ExxonMobil remained the highest-ranked company based in the Houston area as well as in Texas, sitting at No. 8 nationally. That’s down one spot from its No. 7 perch on the 2024 list. During its 2024 budget year, ExxonMobil reported revenue of $349.6 billion, up from $344.6 billion the previous year.

Here are the rankings and 2024 revenue for the 25 other Houston-area companies that made this year’s Fortune 500:

No. 16 Chevron, $202.8 billion
No. 28 Phillips 66, $145.5 billion
No. 56 Sysco, $78.8 billion
No. 75 Conoco Phillips, $56.9 million
No. 78 Enterprise Products Partners, $56.2 billion
No. 92 Plains GP Holdings, $50 billion
No. 143 Hewlett-Packard Enterprise, $30.1 billion
No. 153 NRG Energy, $28.1 billion
No. 155 Baker Hughes, $27.8 billion
No. 159 Occidental Petroleum, $26.9 billion
No. 183 EOG Resources, $23.7 billion
No. 184 Quanta Services, $23.7 billion
No. 194 Halliburton, $23 billion
No. 197 Waste Management, $22.1 billion
No. 214 Group 1 Automotive, $19.9 billion
No. 224 Corebridge Financial, $18.8 billion
No. 256 Targa Resources, $16.4 billion
No. 275 Cheniere Energy, $15.7 billion
No. 289 Kinder Morgan, $15.1 billion
No. 345 Westlake Corp., $12.1 billion
No. 422 APA, $9.7 billion
No. 443 NOV, $8.9 billion
No. 450 CenterPoint Energy, $8.6 billion
No. 474 Par Pacific Holdings, $8 billion
No. 480 KBR Inc., $7.7 billion

Nationally, the top five Fortune 500 companies are:

Walmart
Amazon
UnitedHealth Group
Apple
CVS Health

“The Fortune 500 is a literal roadmap to the rise and fall of markets, a reliable playbook of the world's most important regions, services, and products, and an indispensable roster of those companies' dynamic leaders,” Anastasia Nyrkovskaya, CEO of Fortune Media, said in a news release.

Among the states, Texas ranks second for the number of Fortune 500 headquarters (54), preceded by California (58) and followed by New York (53).

The five-month program establishes a significant relationship between the 20 selected startups and NOV, beginning with paid pilot programs. Photo via NOV.com

NOV opens applications for unique energy tech startup pilot program in Houston

calling all innovators

Houston-based NOV is launching a new growth-stage startup accelerator focused on the upstream oil and gas industry.

NOV, a provider of oil and gas drilling and production operations equipment, has announced its new NOV Supernova Accelerator in collaboration with VentureBuilder, a consulting firm, investor, and accelerator program operator led by a group of Houston innovators.

Applications to the program are open online, and the deadline to apply is July 7. Specifically, NOV is looking for companies working on solutions in data management and analytics, operational efficiency, HSE monitoring, predictive maintenance, and digital twins.

The five-month program establishes a significant relationship between the 20 selected startups and NOV, beginning with paid pilot programs.

"This is not a traditional startup accelerator. This is often a first-client relationship to help disruptive startups refine product-market fit and creatively solve our pressing enterprise problems," reads the program's website.

Selected startups will have direct access to NOV's team and resources. The program will require companies to spend one week per month in person at NOV headquarters in Houston and will provide support surrounding several themes, including go-to-market strategy, pitch practice, and more.

“The NOV Supernova Accelerator offers a strategic approach where the company collaborates with startups in a vendor-client relationship to address specific business needs," says Billy Grandy, general partner of VentureBuilder.vc, in a statement. "Unlike mergers and acquisitions, the venture client model allows corporations like NOV to quickly test and implement new technologies without committing to an acquisition or risking significant investment.”

With the appointment, NOV Inc.’s board of directors now has of ten directors, nine of whom are independent members. Photo via Getty Images

NOV appoints former energy transition exec to board

new hire

Houston-headquartered NOV Inc. announced the appointment of a former energy transition executive to its board of directors.

Patricia Martinez was named to NOV’s board, and the appointment is effective as of March 6. She was formerly chief energy transition officer of Enerflex Ltd.

“We are delighted to welcome Patricia Martinez to NOV’s board of directors,” Clay Williams, chairman, president, and CEO of NOV, says in a news release. “Patricia brings extensive industry experience to our board, including growing energy businesses in international markets, and more recently guiding and developing projects within the energy transition ranging from CCUS to hydrogen to biogas. Her deep insights into emerging energy opportunities will help shape NOV’s energy transition strategy.”

Martinez, who also serves as a director of Par Pacific Holdings Inc., holds a bachelor’s degree in business administration and marketing from Universidad Argentina de la Empresa and an MBA from Houston Christian University.

With the appointment, NOV Inc.’s board of directors now has of ten directors, nine of whom are independent members.

Katie Mehnert, founder and CEO of Ally Energy, is featured in an NOV-produced film about DEI in the energy transition. Photo via allyenergy.com

Short film focused on Houston entrepreneur, energy transition ecosystem releases online

dirty nasty people

In a new short film, a Houston energy entrepreneur sets the scene for the energy industry and showcases her passion for an equitable transition for the sector.

"Dirty Nasty People" originally premiered May 18 to the Houston community. Now, the NOV-produced film featuring Katie Mehnert and her company Ally Energy is available for viewing online.

The film, directed by Paul Dufilho, tells Mehnert's story, her passion for energy, and her career, which began at Enron, grew at Shell and BP, and took her to founding a company dedicated to diversity, equity, and inclusion in the space. Ally Energy, which was founded in 2014 as Pink Petro, is a community and talent platform for the evolving energy industry.

In the movie, Mehnert introduces the dual challenge the industry is facing — and how DEI is integral to solving it.

“On the one hand, we all need energy — affordable, reliable energy — to keep lives going,” she says in the film. “But we are harming the planet. And ourselves.

"It is complicated — this challenge is very complicated," she continues. "But it’s going to take collaboration, and diversity of thought — diversity of energy form. It’s going to take bringing people into the energy industry, into the fold, looking at this challenge in a different way — but it’s all about working together.”

Houston-based NOV Inc., an international oil and gas industry equipment and tech provider, backed the production of the film which was meant to showcase Ally, Mehnert, and the energy transition ecosystem locally.

"The energy workforce of the future will need to be as large and diverse as the technical solutions that will be needed to offset the effects of Climate Change," writes Dufilho on the website. "This project hopes to put a singular human focus on what is one of the largest issues of our day.

"There are already incredible people inside the industry doing the work of developing better energy solutions, and this project highlights just one of them," he continues. "However, the energy problems of the near future will require the perspectives and know-how of those who have not yet seen themselves as part of the solution. The outsider. The consumer. This project is for them."

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10+ must-attend Houston energy events happening in Q3 2026

Must-attend meetings

Editor's note: Q3 is here, and with it, a full slate of must-attend events for Houston energy professionals. On the agenda are exciting exhibitions, expos, week-long happenings, and more. Mark your calendars for these top Houston energy transition events taking place July to September 2026, and begin registering today. Please note: this article may be updated to include additional events.

July 15-16: Downstream USA Conference & Exhibition

Now in its 14th year, Reuters Events: Downstream USA 2026 brings together 3,000+ decision‑makers from refining, chemicals, petrochemicals, EPCs, technology providers, and more. Join the industry’s largest and most influential downstream gathering, which features more than 160 exhibition spaces to connect owner-operators and solution providers through interactive, peer-led session formats and onstage discussions.

This event begins July 15 at George R. Brown Convention Center. Register here.

July 24: Chevron Innovation Competition

The University of Houston presents the 5th Annual Chevron Innovation Commercialization Competition, a dynamic event that empowers students to transform cutting-edge energy research into real-world solutions. This event is sponsored by Chevron and coordinated by UH Energy.

The elimination round takes place July 24 at 2 pm. Find details here.

August 17-20: IMAGE '26

Co-hosted by SEG and AAPG, the International Meeting for Applied Geoscience and Energy event (IMAGE '26) is the world’s premier gathering for geoscientists, energy professionals, and industry leaders to connect and innovate. A global audience from all sectors of geosciences and energy come together in Houston to collaborate and network through a comprehensive technical program with more than 1,100 presentations, engaging panel discussions, hands-on workshops and courses, and a unique exhibition experience.

This event begins August 17 at George R. Brown Convention Center. Register here.

August 18-19: AVEVA Day Energy & EPC

AVEVA Day Energy & EPC brings together 400+ leaders and experts from the oil & gas, energy, chemicals, and EPC industries. Attendees will connect with peers facing similar challenges, learn from real customer stories, and discover how companies are accelerating operations with AI and industrial intelligence.

This event begins August 18 at Westin Houston Memorial City. Register here.

August 26-27: Texas Energy Forum 2026

Organized by U.S. Energy Stream, the 2026 conference will focuses on the theme, "AI Runs on Texas Energy: How Texas and Alberta Are Powering the AI Revolution." The forum brings together U.S. Senators, members of Congress, senior government officials, and leaders from the energy, technology, manufacturing, and financial sectors for candid discussions on the energy, infrastructure, and technological advancements required to power the AI revolution and strengthen American competitiveness.

This event begins August 26 at the Petroleum Club of Houston. Register here.

September 13-18: Houston Energy & Climate Week

Houston Energy & Climate Week is a six-day gathering that welcomes an unparalleled selection of global energy leaders and communities to the energy capital of the world for a full slate of events, from tech tours and networking to a climatetech summit and digital symposium.

This event kicks off September 13 and continues for six days. Find details here.

September 14-18 Houston Energy + Climate Startup Week

Launched in 2024, the official Houston Energy and Climate Startup Week returns for its third year, showcasing how Houston is developing and scaling real solutions by meeting growing global energy demand while reducing carbon emissions. Join leading energy and climate venture capital investors, industry leaders, and startups from around the world for this showcase of the most innovative companies and technologies that are transforming the energy industry while driving a sustainable, low-carbon energy future.

This event kicks off September 14 and continues all week. Find details here.

September 20-23: 2026 Geothermal Rising Conference

Geothermal Rising Conference is the industry’s flagship annual conference, reflecting the global nature of the geothermal industry while highlighting the width and breadth of the community. The conference offers technical, policy, and market sessions, educational seminars, tours of geothermal and renewable energy projects, and numerous networking opportunities. An additional expo showcases projects, services, and state-of-the-art technology and equipment for the geothermal community.

This event begins September 20 at Marriott Marquis Houston. Register here.

September 22-23: 2026 API Offshore Safe Lifting Conference & Expo

The 2026 API Offshore Safe Lifting Conference & Expo is your opportunity to see the latest offshore developments while sharing experiences, practices, and even information on real-life incidents. The 2026 program features two full days of technical sessions, regulatory insights, and networking focused on advancing offshore lifting safety, with keynotes, emerging technologies, and multiple networking opportunities.

This event begins September 22 at the Royal Sonesta Houston Galleria. Register here.

September 22-24: Intelligent Asset Management in Energy Summit

The Intelligent Asset Management in Energy Summit is the premier North American event dedicated to helping energy leaders unlock the full potential of their assets through advanced analytics, predictive maintenance, and integrated digital strategies. The 2026 summit will cover how innovative asset management solutions can reduce downtime, optimize performance, and deliver measurable ROI in a rapidly evolving energy landscape.

This event begins September 22 at Norris Conference Center. Register here.

Houston startup secures $5M to turn oilfield wastewater into critical minerals

fresh funding

Houston-based startup Altillion has secured $5 million in seed funding to accelerate the commercialization of its proprietary IRIS and ALIX technologies, which convert oilfield-produced water into valuable minerals.

San Francisco-based EIC Rose Rock and Houston-based Flathead Forge led the round. Altillion says the funding will go toward pilot facilities and commercial deployments as the company looks to scale in the U.S.

“Altillion’s efficient and scalable technologies are needed more than ever to reshape critical mineral recovery and facilitate beneficial use of oilfield brines,” Jay Keener, Altillion’s CEO and co-founder, said in a news release. “We’re uniquely positioned to provide a stable, domestic supply of the critical minerals needed for electronics, batteries, healthcare and national defense technologies. This investment from EIC Rose Rock and Flathead Forge enables us to strategically accelerate this impact and is very timely given the current geopolitical dynamics.”

Altillion's IRIS and ALIX platforms extract minerals like iodine, lithium and copper from oilfield-produced water, geothermal brines and salars. This process allows companies to unlock new sources of revenue while also boosting the domestic critical minerals supply chain. The company announced earlier this summer that it will launch a feasibility project in the Permian Basin and aims to develop a path to commercial-scale implementation in the field.

“We are excited to partner with Altillion to scale and deploy these world-class technologies to access the vast wealth hidden in wastewater,” David Clouse, Managing Director of EIC Rose Rock, added in the release. “With Altillion, we’re expanding our ability to empower the energy industry to domestically source the critical minerals America needs for a robust economy and supply chain.”

Altillion was founded by Keener and COO Scott Buckwald in 2023. Keener previously founded KDH Trading, where Buckwald also serves as COO, according to his LinkedIn page.

Houston's KBR to provide tech for Singapore SAF plant

SAF agreement

Houston engineering and technology contractor KBR has been picked as the technology provider for what’s expected to be Asia's first commercial-scale ethanol-to-jet sustainable aviation fuel (SAF) plant.

The proposed plant on Jurong Island in Singapore is being developed by Keppel Ltd.’s Infrastructure Division and Aster Chemicals and Energy. KBR will provide technology licensing and Front-End Engineering Design (FEED) services based on its PureSAF technology.

The plant has a planned production capacity of up to 100,000 tons of SAF per year. The plant is subject to final investment decisions and regulatory approvals.

“We are looking forward to working with Keppel and Aster on this key project and to support Singapore’s ambition of becoming Asia’s leading SAF hub and advancing the ongoing efforts to decarbonize the country’s aviation ecosystem,” Stuart Bradie, KBR president and CEO, said in a news release.

According to KBR, its PureSAF Technology can process multiple feedstocks like bioethanol, syngas, carbon dioxide and hydrogen and convert them to SAF, diesel and gasoline.

The technology was developed by Swedish Biofuels AB and commercialized by KBR.

“KBR’s PureSAF is a feedstock-flexible, bankable technology that is designed to deliver a 100% drop in jet fuel, ready to power aircraft without blending,” Bradie added in the news release. “We are constantly innovating our SAF solution to make it compatible with feedstock availability in different regions and to enable the aviation industry to transition to low-carbon jet fuel with a cost-optimized approach.

KBR has also entered into a memorandum of intent with Keppel’s Infrastructure Division, which states that the companies will collaborate again on decarbonization efforts across biofuels, plastic recycling, digitalization via AI, and SAF.

KBR announced in October that it would spin off its Mission Technology Solutions business, nicknamed SpinCo. The scaled-down KBR, nicknamed RemainCo, would concentrate solely on sustainability technology and services designed to reduce carbon emissions and support energy transition efforts. SpinCo named its new CEO and CFO earlier this month.

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