Mayor Sylvester Turner, Greentown Labs CEO Emily Reichert, and other guests celebrated the grand opening of Greentown Houston on Earth Day. Photo by Lee Bond/Greentown Labs

On a day that was years in the making, Greentown Labs opened the doors to its new Houston outpost in Midtown yesterday on Earth Day.

The Greentown Houston grand opening event, which was steamed online with limited in-person and outdoor attendance, celebrated the organization's first location outside Somerville, Massachusetts.

"This is a tremendous, tangible milestone not only for Greentown Labs but also for the City of Houston and the energy transition," says Dr. Emily Reichert, CEO of Greentown Labs, in a news release. "Five years ago, climate change wasn't a topic among many conversations in Houston. Things have changed.

"Today, we are so proud to open our second-ever location in the energy capital of the world and we're eager to accelerate the energy transition over the next 10 years," she continues. "Houston is buzzing with incredible climatetech startups, world-leading energy organizations, and a thriving investment community. At Greentown Houston, we aim to bring the ecosystem together and collaborate toward our decarbonized future."

Missed the event? Click here for some significant overheard moments from the Greentown Houston Grand Opening.

The organization also announced new members to its network of partners, including bp, Intel Corporation, Mitsubishi Heavy Industries, White Deer Energy, Ara Partners, Bechtel Corporation, and Mitsubishi Corporation (Americas).

In addition to corporate partners and inaugural startup members, Mayor Sylvester Turner attended the event and welcomed Greentown to Houston.

"There's no better way to celebrate the first anniversary of the Houston Climate Action Plan than to open Greentown Labs Houston," says Mayor Turner. "Attracting and nurturing the next generation of energy companies is a critical piece of our city's ambition to lead the global energy transition. The Climate Action Plan calls for creating 50 Energy 2.0 companies, and thanks to Greentown Labs, we are already halfway there. We are grateful for Greentown Labs and their partners for helping Houston meet our climate goals and become the energy capital of the future."

The 30 inaugural startups will soon move into space in accordance to social distancing. Take a sneak peek at the new facility in the slideshow below.

Celebrating the grand opening

Photo by Natalie Harms/InnovationMap

The grand opening event was streamed online and welcomed select masked guests in-person and outdoors.


Log on to one of these informative online events happening throughout the rest of the month. Getty Images

10+ can't-miss virtual business and innovation events in Houston for November​

Where to be online

November is usually the last busy month for business events before the end of the year and ahead of the holidays, and this year — even though events have pivoted to virtual gatherings — is no different.

From panels and ask-me-anything meetings to summits and startup competitions, here are over 10 Houston innovation events you can attend virtually via online meetings. This month in particular there's the return of The Houston Innovation Summit and the brand new awards program called, The Listies (nominate now for those). Be sure to register in advance, as most will send an access link ahead of the events.

November 5 — Dell Technologies Ask Me Anything

Dell Technologies is hosting an "Ask Me Anything" session for the Ion community. During this time, attendees can ask experts anything in regards to IT pain points during these times. Entrepreneurs may also use this time to brainstorm the back end IT Infrastructure of their business.

The event will take place online on Thursday, November 5, at 10 am. Register here.

November 5-6 — Greentown Labs Climatetech Summit

Join Greentown Labs for its first Climatetech Summit for a deep dive into scaling climate action. Across the two days, attendees will engage with Greentown's pillars of climate action — technology, finance, policy, and justice — discover groundbreaking startups and their climatetech solutions, learn from industry experts, and forge meaningful connections with entrepreneurs, investors, business leaders, policymakers, startup support organizations, and other climate champions.

The event will take place online on Thursday, November 5, and Friday, November 6. Register here.

November 10 — Igniting Leadership: The State of COVID Vaccines

Join Ignite Healthcare Network for a special night of discussion hosted by IGNITE Steering Committee member Susan Feigin Harris about the status of COVID19 vaccine development with Dr. Maria Elena Bottazzi, Co-director of Texas Children's Center for Vaccine Development.

The event will take place online on Tuesday, November 10, at 6 pm. Register here.

November 10-12 — Texas Life Sciences Forum

The Texas Life Science Forum is the premier life science event in Texas that brings together members from industry, emerging life science companies, academic, and investors. The 2020 event will be virtual and will still be the "must attend" event for anyone in the life science industry in Texas or affiliated with innovation at the life science academic institutions. This event represents an opportunity to meet investors, learn about promising life science companies, to learn about opportunities for entrepreneurs, investment professionals, big pharma, academics and business executives serving the life science industry.

The event will take place online on Tuesday, November 10, to Thursday, November 12. Register here.

November 12 — Plaza Tec: Funding Fundamentals

Though Latinx-owned businesses and startups make up at least 38 percent of businesses in the Houston area, there is still a lack of access to capital blocking growth and progress for Latinx founders.

In this discussion presented by The Ion, representatives from baMa and NextSeed will join together to discuss angel investing and crowdfunding options for Latinx founders and what challenges one might face when seeking capital.

The event will take place online on Thursday, November 12, at 5:30 pm. Register here.

November 12 — Women in Tech and Biz

If you're interested in hearing from some badass women in tech and business, come to the virtual Women in Tech + Biz event created by the Liu Idea Lab for Innovation and Entrepreneurship. The event will be split into two sections — one focused on entrepreneurship and the other focusing more on software and engineering — followed by networking.

The event will take place online on Thursday, November 12, at 6 pm. Register here.

November 13 — Climathon 2020: Hacking Solutions to Houston’s Climate Challenges

On Earth Day this year, the City of Houston published its first Climate Action Plan. The plan is the culmination of thousands of volunteer time from industry professionals, policy stakeholders, and community advocates. Together the working groups have laid out a concise plan to address the climate challenges that Houston faces along with maintaining a leadership role in the energy transition. This year's Climathon will look to realize some of the goals of the plan through design sprints led by local subject matter experts in the areas of transportation, energy innovation, building optimization, and materials management.

The event will take place online on Friday, November 13, at 1 pm. Register here.

November 16-20 — The Houston Innovation Summit

The Houston Innovation Summit — THIS — celebrates Houston's innovation ecosystem during Global Entrepreneurship Week (GEW). THIS responds to 2020 with a special focus on the intersection of Impact and Innovation, spotlighting Houstonians at the forefront of education, ecosystems, inclusion, and policy. Join Impact Hub Houston and Houston's startup and small business community for a week of exciting programs and connect with the thinkers, doers, makers and innovators driving Houston forward.

The event will take place online on Monday, November 16, to Friday, November 20. Register here.

November 17 — Struggles and Bubbles: Pivoting during a Pandemic

Join General Assembly Houston to listen to a panel of startup founders who will share their journey and entrepreneurial struggles, and what it really takes to launch a startup during global pandemic, and scale a startup.

The event will take place online on Tuesday, November 17 at 5 pm. Register here.

November 17-19 — Capital Factory's Texas Startup Roadshow

For the first time, Capital Factory is taking its roadshow online. For three days, the organization will be introducing investors to the various innovative cities across the Lone Star State.

Houston will be the city of focus on Wednesday, November 18.

The event will take place online on Tuesday, November 17, to Thursday, November 19. Register here.

November 20 — The Listies

Let's toast to the entrepreneurial spirit of Houston in a time when celebrating victories is more important than ever. Introducing the Listies, brought to you Houston Exponential and InnovationMap, commemorating the launch of HTX TechList, Houston's innovation discovery platform.

The event will take place online on Friday, November 20, at 3 pm. Register here.

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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.