Dyan Gibbens translated her Air Force experience with unmanned missiles into a drone services company. Courtesy of Alice

Dyan Gibbens found her dream career. She studied engineering, learned to fly at the United States Air Force Academy, went into pilot training, and served as engineering acquisitions officer managing stealth nuclear cruise missiles. She even went on to support Air Force One and Global Hawk UAS engineering and logistics. She dedicated five years to active service before transitioning to the reserves.

"When I went to transition, I learned I was permanently disqualified from ever serving again," Gibbens said. "It was devastating to me, because all I've ever wanted to do was serve."

She went into a doctorate program — she already had her MBA — and was close to finishing up when her drone startup took flight. Trumbull Unmanned provides drone services to the energy sector for various purposes. With her experience as a pilot and managing unmanned missiles, she knew the demand for drones was only growing — and, being from Texas, she knew what industry to focus on.

"I wanted to start a company that uses unmanned systems or drones to improve safety and improve the environment and support energy,"

InnovationMap: What exactly does Trumbull Unmanned do?

Dyan Gibbens: We fly drones in challenging and austere environments to collect and analyze data for the energy sector. We fly across upstream, midstream, and downstream either on or off shore. We focus on three areas: digital transformation, inspection and operations, and technology development and integration.

The types data we collect and analyze could be LiDAR — light detection and ranging — to multispectral — to see the help of different properties — to visible — to perform tech-enabled inspections. We've recently hired inspectors in house as well. On LiDAR, we just hired a subject matter expert.

IM: So, the company is growing. What else is new for Trumbull?

DG: We just signed a few five-year agreements with supermajors. We're excited about that and the new hires. We're starting to do more on communications and situational awareness. We're doing more in energy and now in the government.

IM: What were some early challenges you faced?

DG: We are 100 percent organically funded — from our savings and from client contracts. Our first client was ExxonMobil. Our second client was Chevron. We had to prove ourselves over and over. We had to work hard to earn and then maintain that business. For us, it was also adjusting to a fluctuation in cash flow. It was going from a steady job to betting on yourself, and we didn't know anyone in Houston.

IM: What's the state of drone technology in the field?

DG: We've continued to see a hybrid approach toward services. Meaning, there's an in-house component and outsourced component. On the outsourced component, we intend to provide that for our clients. On the in-house component, while we don't train the masses, we do train our clients on request. We've promoted that model from the beginning. We think it makes sense that they are trained to do something simple, like take a picture, but for some of the more difficult projects, they outsource to us.

We're going to continue to see increased autonomy. There are really some amazing things already in autonomy, but there's still a lot of challenges flying in dense environments such as refineries and plants.

IM: How is Houston's startup scenes for veterans? What resources are out there?

DG: The way I see it is veterans have made a commitment to serve us, so we should make a commitment to serve them. That's my philosophy. Large companies have different programs, which is great, and there are entities such as Combined Arms, which has full services for transitioning veterans where you can go in and one-stop shop to get support from everything like getting connected to the VA to help working through PTSD to getting help transitioning to business. There are also really good Service Academy networks. More and more opportunities exist to step up to serve veterans.

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Portions of this interview have been edited.

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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.