The next TMCx cohort begins August 5. Courtesy of TMC

The Texas Medical Center's startup accelerator, TMCx, has added 19 companies from all around the world to join its medical device family.

The TMC Innovation Institute team narrowed down 140 applications to 40 for the second round of the process, which includes face-to-face interviews, according to a release. After those, 18 companies were selected to join the TMCx09 class, which focuses on medical devices. The last cohort, which specialized in digital health, concluded on June 6.

Out of the 18 companies, five are from Houston. Four other startups hail from other corners of the United States, while 10 international companies also made the cohort. The program commences on August 5, and will run for four months before concluding in a demo day event in November.

Here are the medical device startup companies joining the TMCx09 cohort.

See update at the bottom of this story.

Vascular devices

  • Neurescue (Copenhagen, Denmark) — Neurescue has developed a computer-aided aortic occlusion catheter to help save the lives of patients in the emergency care setting.
  • Venari Medical (Galway, Ireland) — Venari Medical is developing BioVena — a medical device that treats varicose veins and venous leg ulcers with a minimally invasive approach intended to reduce pain.
  • Obsidio (Solana Beach, California) — Obsidio is developing a universal gel embolic material to shrink lesions or to treat internal bleeds, aneurysms and vascular malformations.

Novel therapies

  • PATH EX (Houston) — PATH EX is developing an extracorporeal blood cleansing device designed to selectively remove pathogens, including multi-drug resistant bacteria, and endotoxins from circulating blood to diagnose and treat sepsis.
  • Innosphere (Hafia, Israel) — Innosphere is a medical device company developing brain stimulation solutions for treating cognitive disorders, with a focus on ADHD.

Rehab

  • AbiliTech (St. Paul, Minnesota) — AbiliTech is restoring independence to patients with upper limb neuromuscular conditions by offering a wearable assistive device that allows the user to perform independent activities of daily living.
  • Komodo OpenLab (Toronto, Ontario, Canada) — Komodo OpenLab has developed Tecla, an assistive device giving individuals with physical disabilities the ability to communicate, control, and connect with the world.

Surgery

  • CNX Medical (Houston) — CNX Medical is developing a transcutaneous neurostimulator that is placed in the ear and helps reduce inflammation after abdominal surgery, with a focus on post-operative ileus.
  • CorInnova (Houston) — CorInnova has developed a soft robotic non-blood contacting biventricular cardiac assist device for the treatment of heart failure that would eliminate the many adverse events associated with current technologies.
  • Ictero Medical (Houston) — Ictero Medical is developing a minimally invasive ablation solution to treat high-risk patients with gallstone disease and offer patients the benefits of surgery without the risk. The company was among the big winners at the Texas A&M New Ventures Competition.

Diagnostics

  • Artidis (Basel, Switzerland) — InArtidis has developed a nanomechanical biomarker technology using precise tissue measurement in combination with data analytics to personalize cancer diagnosis.
  • Inveox (Munich, Germany) — Inveox automates the pre-analytical process in cancer diagnosis to improve patient safety and lab efficiency.
  • Cambridge Respiratory Innovations Ltd. (Cambridge, United Kingdom) — CRiL has developed, N-Tidal, a device that analyzes CO2 end-tidal breathing to improve respiration monitoring.

Toward home health

  • Kegg (San Francisco) — Kegg is on a mission to simplify every woman's journey towards taking charge of her fertility with a user-friendly monitoring device.
  • TestCard (London) — TestCard is a flat pack urine test kit that functions in combination with a mobile phone application, turning a phone's camera into a clinical grade scanner.
  • Patch'd (New South Wales, Australia, and San Francisco) — Patch'd uses deep learning and wearable devices to predict the onset of sepsis in the at-home patient.

Transplant

  • Volumetric (Houston) — Volumetric's 3D bioprinting platform creates materials with living cells with applications in biomaterials, cancer research, and eventually human organ replacements. The company's technology started out of Rice University.
  • Tevosol (Edmonton, Alberta, Canada) — Tevasol is developing organ transplant transportation solutions. Their portable warm perfusion machines will help surgeons transplant more organs today and solve organ shortage tomorrow.

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Diagnostic Photonics withdrew from the program after the article published.

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Houston brain health co. secures $6.5M for rare disease study

neuro funding

Houston-based Goldenrod Therapeutics, part of Fannin Partners' portfolio, has announced the initial close of a $6.5 million series seed preferred stock round.

The round was led by Ataxia Ventures and an affiliate of Fannin, according to a news release.

Goldenrod Therapeutics plans to use the funding to support manufacturing, formulation optimization, IND-enabling studies and a Phase I study of its drug to treat brain inflammation, known as 11h.

The study will consider how 11h, which blocks the enzyme PDE4, could treat Friedreich’s ataxia (FA), a rare genetic disease that affects movement, speech and balance. To date, other PDE4 inhibitors have proven to regulate neuroinflammation and neuronal signaling, but have had adverse gastrointestinal side effects or have not reached enough of the central nervous system, according to Goldenrod.

The company says its 11h is expected to have "broad applicability" with limited emetric side effects.

“Our 11h program is a next-generation, orally bioavailable, brain-penetrant PDE4 inhibitor, where researchers overcame longstanding limitations associated with earlier PDE4 inhibitors," Dr. Dev Chatterjee, CEO of Goldenrod, said in the news release. "We believe this creates the potential for a best-in-class therapy for Friedreich’s Ataxia and a potential foundation for development across multiple neurodegenerative and neuroinflammatory disorders.”

11h was first developed at the University of Nebraska Medical Center (UNeMed). Houston-based Fannin Partners in-licensed the product 2020 and landed SBIR Phase I funding to support its initial development for opioid use disorder soon after.

Goldenrod has also received funding to study 11h's effectiveness for multiple sclerosis, methamphetamine addiction and cocaine addiction.

Goldenrod says it is developing 11h to target a variety of neurological and inflammatory conditions, including Alzheimer's disease, multiple sclerosis, ALS, substance use disorders, Batten disease, pain and traumatic brain injury.

27 Houston companies make Fortune 500 for 2026, led by energy giants

Houston HQs

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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This article first appeared on EnergyCapitalHTX.com.