Rice research breakthrough paves the way for advanced disease therapies

study up

Xiaoyu Yang, a graduate student at Rice, is the lead author on a study published in the journal Science on smart cell design. Photo by Jeff Fitlow/ Courtesy Rice University

Bioengineers at Rice University have developed a “new construction kit” for building custom sense-and-respond circuits in human cells, representing a major breakthrough in the field of synthetic biology, which could "revolutionize" autoimmune disease and cancer therapeutics.

In a study published in the journal Science, the team focused on phosphorylation, a cellular process in the body in which a phosphate group is added to a protein, signaling a response. In multicellular organisms, phosphorylation-based signaling can involve a multistage, or a cascading-like effect. Rice’s team set out to show that each cycle in a cascade can be treated as an elementary unit, meaning that they can be reassembled in new configurations to form entirely novel pathways linking cellular inputs and outputs.

Previous research on using phosphorylation-based signaling for therapeutic purposes has focused on re-engineering pathways.

“This opens up the signaling circuit design space dramatically,” Caleb Bashor, assistant professor of bioengineering and biosciences and corresponding author on the study, said in a news release. “It turns out, phosphorylation cycles are not just interconnected but interconnectable … Our design strategy enabled us to engineer synthetic phosphorylation circuits that are not only highly tunable but that can also function in parallel with cells’ own processes without impacting their viability or growth rate.”

Bashor is the deputy director for the Rice Synthetic Biology Institute, which launched last year.

The Rice lab's sense-and-respond cellular circuit design is also innovative because phosphorylation occurs rapidly. Thus, the new circuits could potentially be programmed to respond to physiological events in minutes, compared to other methods, which take hours to activate.

Rice’s team successfully tested the circuits for sensitivity and their ability to respond to external signals, such as inflammatory issues. The researchers then used the framework to engineer a cellular circuit that can detect certain factors, control autoimmune flare-ups and reduce immunotherapy-associated toxicity.

“This work brings us a whole lot closer to being able to build ‘smart cells’ that can detect signs of disease and immediately release customizable treatments in response,” Xiaoyu Yang, a graduate student in the Systems, Synthetic and Physical Biology Ph.D. program at Rice who is the lead author on the study, said in a news release.

Ajo-Franklin, a professor of biosciences, bioengineering, chemical and biomolecular engineering and a Cancer Prevention and Research Institute of Texas Scholar, added “the Bashor lab’s work vaults us forward to a new frontier — controlling mammalian cells’ immediate response to change.”

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Cellenkos Therapeutics has completed promising Phase 1b testing of its Treg cell therapy, CK0804, in the fight against myelofibrosis. Photo via Getty Images

Houston biotech company tests hard-to-fight cancer therapeutics

fighting cancer

A Houston-based, female-founded biotech company has developed a treatment that could prove to be an effective therapy for a rare blood cancer.

Cellenkos Therapeutics has completed promising Phase 1b testing of its Treg cell therapy, CK0804, in the fight against myelofibrosis. According to a news release from the Cellenkos team, the use of its cord-blood-derived therapeutics could signal a paradigm shift for the treatment of this hard-to-fight cancer.

Cellenkos was founded by MD Anderson Cancer Center physician and professor Simrit Parmar. Her research at the hospital displayed the ability of a unique subset of T cells’ capability to home in on a patient’s bone marrow, restoring immune balance, and potentially halting disease progression.

Myelofibrosis has long been treated primarily with JAK (Janus Kinase) inhibitors, medications that help to block inflammatory enzymes. They work by suppressing the immune response to the blood cancer, but don’t slow the progression of the malady. And they’re not effective for every patient.

“There is a significant need for new therapeutic options for patients living with myelofibrosis who have suboptimal responses to approved JAK inhibitors,” Parmar says. “We are greatly encouraged by the safety profile and early signs of efficacy observed in this patient cohort and look forward to continuing our evaluation of the clinical potential of CK0804 in our planned expansion cohort.”

The expansion cohort is currently enrolling patients with myelofibrosis. What exactly are sufferers dealing with? Myelofibrosis is a chronic disease that causes bone marrow to form scar tissue. This makes it difficult for the body to produce normal blood cells, leaving patients with fatigue, spleen enlargement and night sweats.

Myelofibrosis is rare, with just 16,000 to 18,500 people affected in the United States. But for patients who don’t respond well to JAKs, the prognosis could mean a shorter span than the six-year median survival rate outlined for the disease by Cleveland Clinic.

Helping myelofibrosis patients to thrive isn’t the only goal for Cellenkos right now.

The company seeks to aid people with rare conditions, particularly inflammatory and autoimmune disorders, with the use of CK0804, but also other candidates including one known as CK0801. The latter drug has shown promising efficacy in aplastic anemia, including transfusion independence in treated patients.

The company closed its $15 million series A round led by BVCF Management, based in Shanghai, in 2021. Read more here.

March Biosciences' oversubscribed raise brought in $28.4 million of financing with Mission BioCapital and 4BIO Capital leading the pack of investors. Photo via Getty Images

Clinical-stage Houston cell therapy company closes $28.4M oversubscribed series A

cha-ching

An emerging biotech company in Houston has closed its series A with outsized success.

March Biosciences' oversubscribed raise brought in $28.4 million of financing with Mission BioCapital and 4BIO Capital leading the pack of investors. The company has now raised more than $51 million in total.

Last year, March Biosciences announced its strategic alliance with CTMC (Cell Therapy Manufacturing Center), a joint venture between MD Anderson Cancer Center and National Resilience. CEO Sarah Hein met her co-founder, Max Mamonkin, at the TMC Accelerator for Cancer Therapeutics. Along with fellow co-founder Malcolm Brenner, March Biosciences launched from the Center for Cell and Gene Therapy (Baylor College of Medicine, Houston Methodist Hospital and Texas Children’s Hospital). Its goal is to fight cancers that have been unresponsive to existing immunotherapies using its lead asset, MB-105.

An autologous CD5-targeted CAR-T cell therapy, MB-105 is currently in phase-1 trials in patients with refractory T-cell lymphoma and leukemia. The treatment is showing signs of being both safe and effective, meriting a phase-2 trial that will begin early next year. The funds raised from the series A will help to finance the Phase 2 clinical development of MB-105 to expand on the existing data with optimized manufacturing processes.

“This oversubscribed financing enables us to advance our first-in-class CAR-T therapy, MB-105, into a Phase 2 trial for T-cell lymphoma – an indication with an exceptionally poor prognosis and few treatment options,” says Hein. “With the support and confidence of our investors, we are not only advancing our lead program but also expanding our pipeline, underscoring our commitment to delivering best-in-class therapies to patients that can change the treatment paradigm for these challenging cancers.”

But that’s not the only exciting news that Hein and her associates have to report. March Biosciences has recently partnered with cell therapy venture studio, Volnay Therapeutics. Led by highly experienced cell therapy development veterans, the March Biosciences team will work to develop a scalable manufacturing process for MB-105 that will lead to commercialization. Volnay co-founder and CEO Stefan Wildt, who held key R&D leadership positions in cell and gene therapy units at Novartis and Takeda, has also joined the board of March Biosciences. The board of directors is also welcoming Cassidy Blundell of Mission BioCapital and Owen Smith of 4BIO Capital.

“The team at March Biosciences is leveraging powerful science and promising clinical data to tackle cancers with significant unmet need,” says Blundell, a partner at Mission BioCapital. “We're excited to support their journey and believe their focused approach with MB-105 could lead to significant breakthroughs in the CAR-T space.”

The Houston-born company, which is a finalist for the 2024 Houston Innovation Awards, continues to accelerate quickly, in part thanks to its home base. After all, existing local investors like TMC Venture Fund also participated in the new raise. As Hein said last year, “Working with partners here in Houston, we have all the pieces and the community rises to the occasion to support you.”

Diakonos Oncology Corp. closed its seed round to the tune of $11.4 million. Photo via Getty Images

Houston oncology therapeutics co. raises $11.4M in seed funding

money moves

A Houston-based, clinical-stage immuno-oncology company has raised an oversubscribed round of seed funding.

Diakonos Oncology Corp. closed its seed round to the tune of $11.4 million. The funding will go toward supporting the company's Phase 2 trial — slated for later this year, following its ongoing Phase 1 study — and operations through late next year. California-based biotechnology investment firm Restem Group Inc. led the round, and existing investors contributed as well.

“We greatly appreciate the support of these investors in sharing our passion for improving the lives of patients suffering from deadly cancers such as glioblastoma,” Mike Wicks, Diakonos CEO, says in a news release. “The fact that this financing is nearly triple our initial target also shows they share our confidence in the effectiveness of our unique cancer therapy.”

Founded in 2016, the company recently received FDA Fast Track designation for its dendritic cell vaccine, DOC1021, which targets glioblastoma multiforme, or GBM, the most common and most lethal malignant brain tumor in adults. Diakonos also received the designation for its pancreatic cancer treatment.

"We are thrilled to invest in this groundbreaking company that is at the forefront of cancer treatment innovation. As a firm deeply involved in the cell therapeutic field, we recognize the immense potential of their pioneering work with dendritic cell therapies and we are confident that this can become a new standard of care for cancer in the future," adds Andres Isaias, executive chairman of Restem Group Inc.

Diakonos Oncology's DOC1021 uses the body’s natural anti-viral immune response to fight GBM. The vaccine mimics viral infection with the patient’s cancer markers. Essentially, DOC1021 uses the body’s own natural ability to detect and eliminate infected cells. According to the company, all of the patients who have tried the treatment have exceeded survival expectations. And DOC1021 appears to be extremely safe, with no serious adverse effects having been reported.

TMCi named its 2024 Accelerator for Cancer Therapeutics cohort.

TMC names 2024 cohort of cancer treatment innovators

ready to grow

For the fourth year, Texas Medical Center Innovation has named its annual cohort of Texas health tech innovators working on promising cancer therapeutics.

TMCi named its 2024 Accelerator for Cancer Therapeutics cohort last week, and the 23 Texas researchers and companies selected will undergo a nine-month program that will provide them with mentorship and programming, as well as open doors to potential investors and strategic partners.

“The ACT program provides a bridge to commercialization in Texas by surrounding innovators with strategic mentorship, milestone development, and a network of resources to move their projects forward,” Emily Reiser, associate director of TMC Innovation, says in a news release. "We are excited to welcome this year's cohort and to continue enabling participants to advance their solutions to treat cancer."

The program has accelerated 76 researchers and companies to date, many of which — like March Biosciences and Mongoose Bio — have gone on to secure $130 million in funding from venture capitalists and grant funding.

“Our program has cultivated a dynamic ecosystem where partners, researchers, and inventors, who have been part of the journey since its inception and received various forms of funding, continue to propel their life-saving products and technologies forward," Ahmed AlRawi, program manager of ACT, says in the release. "Our 2024 cohort represents our most diverse cohort to date, including eight companies led by women entrepreneurs. Additionally, we are particularly proud that the cohort includes a blend of new and recurring organizations that have leveraged this opportunity in the past to extend their work and continue the momentum to build off the successes of our previous years.”

The 2024 participants are:

  • Alexandre Reuben of UT-MD Anderson Cancer Center
  • Betty Kim & Jiang Wen of UT-MD Anderson Cancer Center
  • Bin He of Houston Methodist
  • Daniel Kiss & John Cooke of PeakRNA at Houston Methodist
  • Hongjun Liang of Texas Tech-Lubbock
  • Jacob Goell & Isaac Hilton of Mercator Biosciences at Rice University
  • Jay Hartenbach & Matthew Halpert of Diakonos Oncology Corp.
  • Kathryn O’Donnell of UT-Southwestern
  • Maralice Conacci Sorrell of UT-Southwestern
  • Neeraj Saini of UT-MD Anderson Cancer Center
  • Neil Thapar of Barricade Therapeutics Corp.
  • Nina Keshavarzi of Celine Biotechnologies
  • Raphael G. Ognar & Henri Bayle of NKILT Therapeutics Inc.
  • Richard Austin & Michael Abrahamson of Reglagene Inc.
  • Tim Peterson & Joppe Nieuwenhuis of Bioio Inc.
  • Todd Aguilera & Eslam Elghonaimy of UT-Southwestern
  • Venkata Lokesh Battula of Siddhi Therapeutics Inc. at UT-MD Anderson Cancer Center
  • Weei-Chin Lin & Fang-Tsyr Lin of Baylor College of Medicine
  • Yong Li & Dongxiao Feng of Sotla Therapeutics at Baylor College of Medicine
  • Anil Sood & Zhiqiang An of UT-MD Anderson Cancer Center
  • Narendra Kumar & Jayshree Mishra of Texas A&M-College Station
  • Tao Wang of NightStar Biotechnologies Inc. at UT-Southwestern
  • Jian Hu of UT-MD Anderson Cancer Center
The Texas Medical Center Innovation Factory has named the 16 companies making up the inaugural cohort in the Innovate UK Global Incubator Programme. Photo via tmc.edu

TMC names inaugural cohort for unique accelerator with UK

coming to HOU

Sixteen digital health and medical device startups founded in the United Kingdom have been selected for a customized accelerator at the Texas Medical Center's Innovation Factory.

In partnership with Innovate UK, TMCi created the Innovate UK Global Incubator Programme, a new accelerator that supports UK businesses as they build their United States go-to-market plan. The program builds the BioBridge relationship between TMC and the UK that was originally established five years ago.

“The TMC UK BioBridge program was launched with the UK Department for Business and Trade in 2018 to serve as a gateway for advancing life sciences and foster innovation and research between our two countries," says Ashley McPhail, chief external affairs and administration officer for TMC, in a news release. "We saw an opportunity to work with Innovate UK to develop a larger program with the UK after the success of the 11 companies that previously participated in our health tech accelerator."

The 16 companies will participate in the program from June to November. The cohort is expected to arrive in Houston on June 5 and have access to TMCi's facilities, network of mentors and potential clients, funding, potential customers, and curated programing — all while being a unique entry point into the US. The new offering joins three other globally recognized curriculums: Biodesign, Accelerator for Cancer Therapeutics, and Health Tech.

“TMCi nurtures long-term growth, development, and competitiveness to increase startups chances of success and global expansion," says Emily Reiser, associate director of TMC Innovation. "By bringing their novel technologies and exposing them to a curated selection of TMC’s expert network, startups receive support and evaluation to build, scale, and expand in the US market."

Two of the cohort's specialties include cardiovascular and oncology — two of TMC's strongest areas of expertise — with solutions ranging from surgical devices to AI-enabled risk stratification and hospital efficiency.

Innovate UK is the country's national innovation agency dedicated to supporting business-led innovation in all sectors.

“The United Kingdom is fully committed to improving global healthcare through scientific collaboration," says His Majesty’s Consul General in Texas Richard Hyde in the release. "Through the expansion of the TMC UK BioBridge and in partnership with Innovate UK, this programme will help to expose the brightest and best British companies to the world’s largest medical city. Our companies will collaborate and grow as they work to develop cutting edge technology. The partnership between the UK Government and TMC demonstrates that international collaboration can drive both economic growth and improvement to quality of life.”

The 16 companies making up the inaugural cohort are as follows, according to TMC.

  • AINOSTICS aims to revolutionize the treatment and prevention of neurological conditions, such as dementia, by developing innovative AI-enabled solutions that draw novel insights from routinely acquired non-invasive medical scans to deliver accurate diagnosis and outcome prediction, and in turn facilitate personalized care and timely access to disease-modifying treatments for patients.
  • Alvie is a blended human plus AI-enabled digital solution providing personalised pre and rehabilitation coaching and supportive care for cancer and surgery. Alvie's technology combines data profiling, risk-stratification and tailored prescriptions of health and well-being with curated educational content, targeted behaviour change coaching and expert support through chat messaging and virtual consultations.
  • C the Signs™ is a validated AI cancer prediction platform, which can identify patients at risk of cancer at the earliest and most curable stage of the disease. Used by healthcare professionals, C the Signs can identify which tumor type a patient is at risk of and recommend the most appropriate next step in less than 30 seconds. The platform has detected over 10,000 patients with cancer, with over 50 different types of cancer diagnosed, and with a sensitivity of >98% for cancer.
  • At PEP Health, We believe all patients deserve the best care possible. Our cutting-edge machine-learning technology enables healthcare organisations, regulators, and insurers the real-time, actionable insights they need to have a direct and dramatic impact on patient experiences.
  • PreciousMD improves the lives of lung-cancer and other lung-related illnesses patients worldwide by enabling imaging-based diagnostics needed for personalized treatment pathways.
  • Ufonia is an autonomous telemedicine company, we use large language models and voice AI to increase the capacity of clinical professionals.
  • My mhealth offers digital therapeutics for a range of long-term conditions- COPD, Asthma, Diabetes and Heart Disease. Our product has been successfully deployed in the UK and India, with >100,000 users registered to date. Our solutions empower patients to self-manage their conditions, resulting in dramatic improvements in outcomes, as evidenced through multiple clinical trials and real-world evaluations.
  • At Surgery Hero, we offer a clinically backed solution that ensures whole-human support before and after surgery. We help health systems, employers and health plans cut costs without sacrificing quality of care.
  • Panakeia's software platform enables extremely rapid multi-omics profiling in minutes directly from routinely used tissue images without needing wet lab assays.
  • QV Bioelectronics are striving to deliver longer, better quality lives for brain tumour patients. Using their first-of-its-kind implantable electric field therapy device, GRACE, QV will provide effective, focal & continuous treatment without impacting patient quality of life.
  • 52 North is a med-tech company focused on improving health outcomes and health equity by reinventing care pathways. The NeutroCheck® solution is a finger-prick blood test and digital platform built to significantly improve safety and quality of life for cancer patients, by helping to identify at-home those patients who are at risk of the most fatal side-effect of chemotherapy: neutropenic sepsis.
  • Somnus is fulfilling an unmet need in global healthcare by developing real-time, point of care blood propofol monitoring. Its products will improve the care of sedated and anaesthetised patients, save money for hospitals, and facilitate a major reduction in greenhouse gas emissions.
  • ScubaTx is a breakthrough organ transplant preservation company established to solve the global unmet need for cost-efficient and longer-duration organ preservation technology. ScubaTx has developed a simple, small and affordable device which uses Persufflation to extend the preservation of organs.
  • IBEX is on a mission to help people live active, healthy and productive lives by increasing their access to early diagnosis of osteoporosis. The IBEX BH software as medical device delvers routine, automated assessment of fracture risk from routine radiology for earlier detection and more equitable treatment of osteoporosis.
  • NuVision produces products derived from donated human amniotic membrane that are used in ophthalmology to help patients with chronic, traumatic and post-surgical wounds of the eye to be treated earlier and recover more fully and more quickly. The company’s products are also used in the management of dry eye disease, a debilitating conditions that affects around 17m people in the USA.
  • Calon Cardio-Technology is on a mission to improve quality of life for patients with Left Ventricular Assist devices (LVAD) and reduce the common post operative complications associated with these implantable heart pumps. We plan to do this by introducing a completely wireless heart pump system and augment patient follow-up with built-in remote monitoring capabilities.
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NASA signs on latest tenant for new Exploration Park campus, now underway

space hub

Exploration Park, the 240-acre research and commercial institute at NASA's Johnson Space Center, is ready for launch.

Facilities at the property have broken ground, according to a recent episode of NASA's Houston We Have a Podcast, with a completion date targeted for Q4 2026.

The research park has also added Houston-based KBR to its list of tenants. According to a news release from the Greater Houston Partnership, the human spaceflight and aerospace services company will operate a 45,000-square-foot food innovation lab at Exploration Park. KBR will use the facility to focus on customized food systems, packaging and nutrition for the low Earth orbit economy.

“Exploration Park is designed for companies in the space ecosystem, such as KBR, to develop, produce, and deploy innovative new technologies that support space exploration and commerce,” Simon Shewmaker, head of development at ACMI Properties, the developer behind Exploration Park, said in the GHP release. “This project is moving expeditiously, and we’re thrilled to sign such an innovative partner in KBR, reflecting our shared commitment to building the essential infrastructure of tomorrow for the next generation of space innovators and explorers.”

NASA introduced the concept of a collaborative hub for academic, commercial and international partners focused on spaceflight in 2023. It signed leases with the American Center for Manufacturing and Innovation and the Texas A&M University System for the previously unused space at JSC last year.

“For more than 60 years, NASA Johnson has been the hub of human space exploration,” Vanessa Wyche, NASA Johnson Space Center Director, said in a statement at the time. “This Space Systems Campus will be a significant component within our objectives for a robust and durable space economy that will benefit not only the nation’s efforts to explore the Moon, Mars and the asteroids, but all of humanity as the benefits of space exploration research roll home to Earth.”

Texas A&M is developing the $200 million Texas A&M Space Institute, funded by the Texas Space Commission, at the center of the park. The facility broke ground last year and will focus on academic, government and commercial collaboration, as well as workforce training programs. ACMI is developing the facilities at Exploration Park.

Once completed, Exploration Park is expected to feature at least 20 build-to-suit facilities over at least 1.5 million square feet. It will offer research and development space, laboratories, clean rooms, office space and light manufacturing capabilities for the aerospace, robotics, life support systems, advanced manufacturing and artificial intelligence industries.

According to the GHP, Griffin Partners has also been selected to serve as the co-developer of Exploration Park. Gensler is leading the design and Walter P Moore is overseeing civil engineering.

Houston cleantech co. plans first-of-its-kind sustainable aviation fuel facility

coming soon

Houston-based Syzygy Plasmonics announced plans to develop what it calls the world's first electrified facility to convert biogas into sustainable aviation fuel (SAF).

The facility, known as NovaSAF 1, will be located in Durazno, Uruguay. It is expected to produce over 350,000 gallons of SAF annually, which would be considered “a breakthrough in cost-effective, scalable clean fuel,” according to the company.

"This is more than just a SAF plant; it's a new model for biogas economics," Trevor Best, CEO of Syzygy Plasmonics, said in a news release. "We're unlocking a global asset class of underutilized biogas sites and turning them into high-value clean fuel hubs without pipelines, costly gas separation, or subsidy dependence.”

The project is backed by long-term feedstock and site agreements with one of Uruguay's largest dairy and agri-energy operations, Estancias del Lago, while the permitting and equipment sourcing are ongoing alongside front-end engineering work led by Kent.

Syzygy says the project will result in a 50 percent higher SAF yield than conventional thermal biogas reforming pathways and will utilize both methane and CO2 naturally found in biogas as feedstocks, eliminating the need for expensive CO2 separation technologies and infrastructure. Additionally, the modular facility will be designed for easy replication in biogas-rich regions.

The new facility is expected to begin commercial operations in Q1 2027 and produce SAF with at least an 80 percent reduction in carbon intensity compared to Jet A fuel. The company says that once fully commercialized the facility will produce SAF at Jet-A fuel cost parity.

“We believe NovaSAF represents one of the few viable pathways to producing SAF at jet parity and successfully decarbonizing air travel,” Best added in the release.

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This article originally ran on EnergyCapital.

Houston company ranks No. 13 worldwide on Forbes Global 2000 list

World's Biggest Companies

More than 60 Texas-based companies appear on Forbes’ 2025 list of the world’s 2,000 biggest publicly traded companies, and nearly half come from Houston.

Among Texas companies whose stock is publicly traded, Spring-based ExxonMobil is the highest ranked at No. 13 globally.

Rounding out Texas’ top five are Houston-based Chevron (No. 30), Dallas-based AT&T (No. 35), Austin-based Oracle (No. 66), and Austin-based Tesla (No. 69).

Ranking first in the world is New York City-based J.P. Morgan Chase.

Forbes compiled this year’s Global 2000 list using data from FactSet Research to analyze the biggest public companies based on four metrics: sales, profit, assets, and market value.

“The annual Forbes Global 2000 list features the companies shaping today’s global markets and moving them worldwide,” said Hank Tucker, a staff writer at Forbes. “This year’s list showcases how despite a complex geopolitical landscape, globalization has continued to fuel decades of economic growth, with the world’s largest companies more than tripling in size across multiple measures in the past 20 years.”

The U.S. topped the list with 612 companies, followed by China with 317 and Japan with 180.

Here are the rest of the Texas-based companies in the Forbes 2000, grouped by the location of their headquarters and followed by their global ranking.

Houston area

  • ConocoPhillips (No. 105)
  • Phillips 66 (No. 276)
  • SLB (No. 296)
  • EOG Resources (No. 297)
  • Occidental Petroleum (No. 302)
  • Waste Management (No. 351)
  • Kinder Morgan (No. 370)
  • Hewlett Packard Enterprise (No. 379)
  • Baker Hughes (No. 403)
  • Cheniere Energy (No. 415)
  • Corebridge Financial (No. 424)
  • Sysco (No. 448)
  • Halliburton (No. 641)
  • Targa Resources (No. 651)
  • NRG Energy (No. 667)
  • Quanta Services (No. 722)
  • CenterPoint Energy (No. 783)
  • Coterra Energy (No. 1,138)
  • Crown Castle International (No. 1,146)
  • Westlake Corp. (No. 1,199)
  • APA Corp. (No. 1,467)
  • Comfort Systems USA (No. 1,629)
  • Group 1 Automotive (No. 1,653)
  • Talen Energy (No. 1,854)
  • Prosperity Bancshares (No. 1,855)
  • NOV (No. 1,980)

Austin area

  • Dell Technologies (No. 183)
  • Flex (No. 887)
  • Digital Realty Trust (No. 1,063)
  • CrowdStrike (No. 1,490)

Dallas-Fort Worth

  • Caterpillar (No. 118)
  • Charles Schwab (No. 124)
  • McKesson (No. 195)
  • D.R. Horton (No. 365)
  • Texas Instruments (No. 374)
  • Vistra Energy (No. 437)
  • CBRE (No. 582)
  • Kimberly-Clark (No. 639)
  • Tenet Healthcare (No. 691)
  • American Airlines (No. 834)
  • Southwest Airlines (No. 844)
  • Atmos Energy (No. 1,025)
  • Builders FirstSource (No. 1,039)
  • Copart (No. 1,062)
  • Fluor (No. 1,153)
  • Jacobs Solutions (1,232)
  • Globe Life (1,285)
  • AECOM (No. 1,371)
  • Lennox International (No. 1,486)
  • HF Sinclair (No. 1,532)
  • Invitation Homes (No. 1,603)
  • Celanese (No. 1,845)
  • Tyler Technologies (No. 1,942)

San Antonio

  • Valero Energy (No. 397)
  • Cullen/Frost Bankers (No. 1,560)

Midland

  • Diamondback Energy (No. 471)
  • Permian Resources (No. 1,762)
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A version of this article originally appeared on CultureMap.com.

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