The U.S. Justice Department and the federal Environmental Protection Agency have reached an agreement with a Houston company on alleged violations of the federal Clean Air Act. Photo via Getty Images

Officials have reached an agreement with a Houston-based company over alleged violations of the federal Clean Air Act.

Under a proposed settlement with the U.S. Justice Department and the federal Environmental Protection Agency, Derichebourg Recycling USA Inc. will prevent the release of ozone-depleting refrigerants and non-exempt substitutes from refrigerant-containing items at its 10 scrap metal recycling facilities in Texas and Oklahoma. Derichebourg also will pay a $442,500 penalty.

Derichebourg Recycling USA’s parent company is France-based Derichebourg SA, an operator of scrap metal recycling facilities.

A complaint filed in federal court alleges Derichebourg Recycling USA failed to recover refrigerant from appliances and motor vehicle air conditioners before disposal, and failed to verify with the supplier that refrigerant had been properly recovered before delivery.

The complaint focuses on alleged Clean Air Act violations at three Derichebourg scrap metal recycling facilities in Houston: 7501 Wallisville Rd., 8202 W. Montgomery Rd., and 1 Wharf St. Environmental Protection Agency (EPA) inspections in 2018 led to the complaint.

Derichebourg operates three other facilities in the Houston area: 3515 Almeda Genoa Rd. and 6648 N. Eldridge Pkwy., both in Houston, and 13319 FM 1764 in Santa Fe.

“To continue protecting stratospheric ozone, we need companies like Derichebourg to comply with the Clean Air Act when recycling appliances and motor vehicles containing harmful refrigerants,” Todd Kim, an assistant U.S. attorney general, says in a January 7 news release.

The refrigerant, R-12, is one of the most destructive ozone-depleting substances and has a global warming potential greater than 10,000 times the power of carbon dioxide, according to the news release.

“Refrigerants that are not captured properly can be damaging to the earth’s ozone layer and are known to increase greenhouse gasses, which leads to climate change,” says Larry Starfield, acting assistant administrator of the EPA.

The agreement, called a consent decree, still requires approval from a federal judge in Houston. The consent decree is signed by two EPA attorneys and the CEO of Derichebourg Recycling USA, Philippe Leonard.

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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.