Here are the Houston startups that together raised over $222 million in venture capital investment last quarter. Photo via Getty Images

Houston startups are keeping pace when it comes to venture capital raised this year. In this roundup of funding closed in the second quarter, Houston businesses across sectors and industries close significant rounds from seed to series C.

Eleven startups raised over $222 million last quarter, according to InnovationMap reporting, which is more than in the first and second quarters. In chronological order, here's what companies snagged fresh funding recently.


Houston EV charging tech company raises $6M series A

Revterra Corp. closed a $6 million series A round led by Equinor Ventures. Photo courtesy of Revterra

Houston-based tech company Revterra Corp. has picked up $6 million in a series A funding round to propel development of its battery for electric vehicle charging stations.

Norway’s Equinor Ventures led the round, with participation from Houston-based SCF Ventures. Previously, Revterra raised nearly $500,000 through a combination of angel investments and a National Science Foundation grant.

Revterra says its kinetic flywheel battery enables quick, simple, cost-effective installation of high-powered DC chargers for electric vehicles. The technology eases the burden placed on electrical grids, the company says. Continue reading.

Houston-founded blockchain startup raises $15M series A to increase international impact

Topl's latest fundraising round includes participation from a Houston investor as well as international partners. Image via Getty Images

A blockchain technology company that was founded out of Rice University has closed its latest round of funding.

Founded in 2017, Topl is a blockchain-as-a-service company that's developing a purpose-built blockchain ecosystem to empower impact and sustainability within its userbase of businesses. The company's $15 million series A round was co-led by Houston-based Mercury, Republic Asia, and Malta-based Cryptology Asset Group.

“Topl’s blockchain was purpose built to power the next wave of supply chains and markets, that are more sustainable and inclusive,” says Chris Georgen, founder and managing director of Topl, in a news release. “Every decision we’ve made has been relentlessly focused on this problem and it’s exciting to see this approach yielding results with more than 30 different impact-forward use cases already live or approaching launch." Continue reading.

Houston-based gig economy startup raises $1.2M, launches beta platform

Madison Long, left, and Simone May co-founded Clutch to democratize side gig success on college campuses. Photo courtesy of Clutch

Two Houstonians on a mission to enable safe and equitable entrepreneurship on college campuses have launched a new beta platform and closed pre-seed funding.

Clutch, a digital marketplace startup founded by Simone May and Madison Long, closed its pre-seed round of funding at $1.2 million – led by Precursor Ventures and other partners such as Capital Factory and HearstLab. The investment from this round will support Clutch’s national open beta launch of its platform for brands and student creators nationwide and its continued investment in customer and product strategy.

“We are at this inflection point where marketing is changing,” May says in a press release. “We know that the next generation can clearly see that and I think a lot of marketing agencies are starting to catch on. We need to be prioritizing the next generation’s opinion because they are driving who is interested in what they buy. This upcoming generation does not want to be sold to and they don’t like inorganic, inauthentic advertisements. That’s why user generated content is so big, it feels authentic.” Continue reading.

Houston hydrogen startup closes $25M series B

This hydrogen company has fresh funding. Photo via utility.global

Utility Global, a Houston-based sustainable hydrogen company, has closed its series B round of funding to the tune of $25 million, Axios reports.

Houston-based private equity firm Ara Partners led the round. Other participating investors included: Samsung Ventures, NOVA, and Aramco.

Utility Global, founded in 2018, has developed a clean hydrogen solution. The proprietary tech — called the eXERO Technology Platform — includes a zero electricity process that converts sustainable waste streams into high-purity hydrogen. Additionally, the company developed its H2Gen Product Line that delivers customers reliable, low carbon, and high purity hydrogen, which offers unparalleled feedstock flexibility and highly competitive economics. Continue reading.

Industrial blockchain tech company headquartered in Houston closes $4M series C round

Houston-based Data Gumbo, an industrial blockchain-software-as-a-service company, announced that its latest round or funding. Photo courtesy of Data Gumbo

Data Gumbo, a Houston-based tech startup, has picked up $4 million in a series C round from the venture capital arms of foreign energy companies Saudi Aramco and Equinor.

The funding for Data Gumbo came from Saudi Aramco Energy Ventures, the VC subsidiary of government-owned oil and natural gas giant Saudi Aramco, and Equinor Technology Ventures, the VC subsidiary of Norwegian energy operator Equinor. The U.S. headquarters for both Saudi Aramco and Equinor are in Houston. Continue reading.

Houston company raises $138M for next-generation geothermal energy

The future of geothermal energy is here — and just got a big payday. Photo via Getty Images

Houston-based startup Fervo Energy has picked up $138 million in funding to propel its creation and operation of carbon-free power plants fueled by geothermal energy.

Fervos says the series C round will help it complete power plants in Nevada and Utah and evaluate new projects in California, Idaho, Oregon, Colorado, and New Mexico, as well as in other countries.

California-based investment firm DCVC led the round, with participation from six new investors. Continue reading.

Houston 'sneakerheads' raise $8.9M to further develop digital marketplace

Tradeblock's three co-founders have known each other since childhood. Photo via tradeblock.us

A Houston-based company is kicking it with some fresh funding with plans to expand development of its marketplace platform.

Unique sneaker trading platform, Tradeblock, has raised $8.9 million in funding from investment partners Courtside VC, Trinity Ventures, and Concrete Rose Capital. Per the news release, the company expects additional funding of around $4.5 million to its seed round.

Tradeblock — founded in 2020 by self-proclaimed "sneakerheads" and childhood friends Mbiyimoh Ghogomu, Tony Malveaux, and Darren Smith — will use the fresh funding to expand and improve its digital marketplace for shoes. Continue reading.

Health tech startup with Houston HQ raises $14M series A

Optellum, which has its United States operations based in the TMC Innovation Institute, has raised fresh funding. Photo via Getty Images

A Oxford-based health tech startup that has its United States headquarters in Houston has announced the close of its series A round of funding.

Optellum, which has created a breakthrough AI platform to diagnose and treat early-stage lung cancer, has raised $14 million in a series A funding round. The round was led by United Kingdom-based Mercia, with additional investors California-based Intuitive Ventures and New York-based Black Opal Ventures. Existing investors, including St John's College in the University of Oxford, IQ Capital, and the family office of Sir Martin & Lady Audrey Wood, also participated in the round, per a news release.

"Lung cancer is an urgent public health crisis and Optellum's groundbreaking approach utilizing AI to accelerate early detection and intervention may fundamentally alter the healthcare community's approach to combating this disease," says Dr. Oliver Keown, managing director of Intuitive Ventures, in the release. "Optellum is uniquely positioned to align and provide considerable value to patients, providers, and payers alike. Intuitive Ventures is thrilled to provide our full arsenal of financial and strategic support to Optellum as we work towards a world of better outcomes for cancer patients." Continue reading.

Houston-based biomaterials company raises $1.1M to grow team, build new HQ

BUCHA BIO has raised over $1 million to grow its team, build a new headquarters, and accelerate its go-to-market strategy. Image courtesy of BUCHA BIO

A Houston company that has created a plant-based material that can replace unsustainable conventional leathers and plastics has announced the close of its oversubscribed seed funding round.

BUCHA BIO announced it's raised $1.1 million in seed funding. The round included participation from existing partners New Climate Ventures, Lifely VC, and Beni VC, as well as from new partners Prithvi VC, Asymmetry VC, and investors from the Glasswall Syndicate, including Alwyn Capital, as well as Chris Zarou, CEO & Founder of Visionary Music Group and manager of multi-platinum Grammy-nominated rapper, Logic, the startup reports in a news release.

“I’m excited to back BUCHA BIO’s amazing early market traction," Zarou says in the release. "Their next-gen bio-based materials are game-changing, and their goals align with my personal vision for a more sustainable future within the entertainment industry and beyond.” Continue reading.

Houston-based Codenotary has expanded its series B fundraising round

Codenotary's software enables tools for notarization and verification of the software development life cycle. Photo via Getty Images

A Houston software startup that raised $12.5 million earlier this year has announced additional funding of $6 million. Codenotary, whose technology helps secure software supply chains, closed its series B round in January. The fresh funding brings the company's total investment raised to $24 million — thanks to investors Bluwat and Elaia.leaders and following a series A round that was announced in 2020.

Codenotary, formerly known as vChain, was founded in 2018 by CEO Moshe Bar and CTO Dennis Zimmer. The additional capital, which will go towards scaling up sales in the U.S. and Europe as well as entering the Asian market, was raised as an extension of the series B round. Continue reading.

Houston-based virtual reality startup raises $3.2M in first outside capital round

VR training startup, HTX Labs, has raised funding from an outside investor for the first time. Courtesy of HTX Labs

HTX Labs, a Houston-based company that designs extended reality training for military and business purposes, announced last week that it has raised its first outside capital.

The company has received a $3.2 million investment from Cypress Growth Capital. Founded in 2017, HTX Labs — developer of the EMPACT Immersive Learning Platform — has been granted funding from the Department of Defense as well as grown its client base of commercial Enterprises. The platform uses virtual and extended reality that "enables organizations to rapidly create, deploy, measure, and sustain cost-effective, secure, and centralized immersive training programs, all within engaging, fully interactive virtual environments," per a news release.

“We have been looking to secure outside capital to accelerate the growth of our EMPACT platform and customer base but we hadn’t found the right partner who provided an investment vehicle that matched our needs,“ says HTX Labs CEO Scott Schneider in the release. Continue reading.

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Promising Houston sleep tech startup readies for big year of growth, work toward FDA clearance

HOUSTON INNOVATORS PODCAST EPISODE 268

There's a slew of treatment options for people living with sleep apnea. But, the bigger problem, as Meagan Pitcher realized during her time at the Texas Medical Center's Biodesign program, is that there's no easy way to reliably diagnose and determine a treatment plan for patients.

"We saw all of the companies trying to solve the problem of making the airway collapse less or make the air way wider — it might be surgery, might be medication, or nerve stimulation," Pitcher says on the Houston Innovators Podcast. "One of the things we found was that it was really hard to match a patient with sleep apnea with a good treatment for them. One of the reasons is it's hard to get an understanding of where the individual's site of collapse is as sleep medicine is currently practiced."

As Pitcher went through the TMC Biodesign program, she teamed up with her co-founders — CTO Onur Kilicand and CMO Britt Cross — to find a solution, and together they developed Bairitone Health. The company's technology provides at-home medical imaging using sonar sensing. The non-invasive device has the potential to replace the current standard of care, which is a surgical procedure.



This year, the company joined Activate Houston's inaugural cohort as the lone biotech company. Activate, which announced its expansion to Houston in 2023, helps hardtech founders develop and grow their companies from bench to commercialization, though it mostly focuses on industrial or climatetech innovators. In addition to this accomplishment, Bairitone Health was among the 2024 Houston Innovation Awards finalists.

While 2024 was successful for the company, next year should bring even more milestones for Bairitone, Pitcher says, including a seed round of funding that will support the growth of their team, fund early testing, and fuel Baritone's path toward FDA clearance.

"2025 is going to be a big year for Bairitone, especially around solidifying our regulatory plan. The device we're making is really low risk — we're not putting anything into the body, and we're potentially replacing a surgical procedure," Pitcher says. "We've always hypothesized that we'll have a 510(k) clearance with the FDA, but we're moving toward having our first meeting with the FDA to solidify those plans."

Bairitone's journey so far has been a uniquely Houston story, as Pitcher acknowledges.

"I really love Houston — especially for med tech. The medical center is just awesome, you have all these brilliant people coming in from the entire world to work at these institutions," Pitcher says. "It's kind of because of this atmosphere of excellence around health care, innovation, open mindedness, and collaboration — those are reasons why I really love working in Houston."

Top stories: Houston's most-read health tech news of 2024

year in review

Editor's note: As the year comes to a close, InnovationMap is looking back at the year's top stories in Houston innovation. In the health tech category on InnovationMap, top stories included startup funding raised, IPO plans, FDA clearance, and more. Be sure to click through to read the full story.

New report ranks Houston top market for life sciences

Houston lands in the No. 7 spot for growth in the granting of degrees in biological and biomedical sciences. Photo by Natalie Harms/InnovationMap

Thanks in large part to producing hundreds of college-trained professionals, Houston’s life sciences industry ranks among the top U.S. markets for talent in 2024.

In a report published by commercial real estate services company CBRE, Houston lands in the No. 7 spot for growth in the granting of degrees in biological and biomedical sciences. From 2017 to 2022, Houston notched a growth rate of 32.4 percent in this category.

In 2022, the University of Houston led the higher education pack in the region, graduating 746 people with a bachelor’s degree or above in biological or biomedical sciences, according to the report. Continue reading.

Houston innovator raises pre-seed funding for health care staffing platform

Ayoade Joy Ademuyewo founded Lokum last year to create a solution to better connecting medical specialists with health care facilities nationwide. Photo courtesy of Lokum

A Houston health care innovator is celebrating an oversubscribed round of pre-seed funding to improve on her startup's unique staffing platform.

Ayoade Joy Ademuyewo founded Lokum last year to create a solution to better connecting medical specialists with health care facilities nationwide. The new platform, which cuts out the middleman and lowers staffing costs, raised $700,000 in pre-seed funding that will go toward further development of the technology.

"Healthcare organizations spend $26 billion annually to support a crippling dependence on third-party agencies for connecting with clinical staff," Ademuyewo says in a news release. "Technological solutions that are pointed precisely to streamline and strengthen the relationships between highly specialized clinicians and their future employers are vital to alleviating this detrimental dependance, and central to our mission." Continue reading.

Houston regenerative medicine company to IPO, move toward more human trials

FibroBiologics will IPO this week. Photo via Getty Images

Want a piece of one of Houston’s most promising biotech companies? On January 31, FibroBiologics will begin the trading of its common stock on the Nasdaq stock exchange.

While most labs in the realm of regenerative medicine are focused on stem cells, FibroBiologics has bet on fibroblasts as the secret to treating myriad ailments. Fibroblasts, the most common type of cell in the body, are the primary cells that compose connective tissue.

Interested investors can find a prospectus to peruse before taking the leap. FibroBiologics filed with the U.S. Securities & Exchange Commission (SEC) on November 7, 2023. In September, FibroBiologics CEO Pete O’Heeron told InnovationMap, “I think what we're going to see is that fibroblasts are going to end up winning... They're just a better overall cell than the stem cells.” Continue reading.

Houston organizations identify promising life science cos. at annual event

The Rice Alliance and BioHouston acknowledged innovations from a dozen promising health tech companies. Photo via Rice University

For the 13th year, the Texas Life Science Forum hosted by BioHouston and the Rice Alliance for Technology and Entrepreneurship celebrated innovative companies from around the world that are creating new treatments and solutions to today's biggest health care challenges.

This week, over 40 companies presenting their innovations across cancer, cardiovascular disease, biotechnology, and more. Nearly 700 venture capitalists, corporate innovation groups, angel networks, industry leaders, academics, service providers, and others attended the event on November 7 at Rice's BioScience Research Collaborative in the Texas Medical Center.

Just like in previous years, the event ended with the announcement of the 10 companies that were deemed "most promising" based on their pitches and technologies. Of the 10 companies named, six are headquartered in Houston and an additional two startups on the list have a presence here. Continue reading.

FDA greenlights Houston surgery robotics company's unique technology

EndoQuest Robotics secured an Investigational Device Exemption from the FDA for its clinical study. Photo via Getty Images

A Houston surgical robotics company has gotten a Investigational Device Exemption from the FDA to go forward with human trials.

This news allows EndoQuest Robotics to begin its Prospective Assessment of a Robotic-Assisted Device in Gastrointestinal Medicine (PARADIGM) study, which will be conducted at leading United States health care facilities, including Brigham and Women’s Hospital (Boston), Mayo Clinic (Scottsdale), Cleveland Clinic (Cleveland), AdventHealth (Orlando), and HCA Healthcare (Houston). The study will include surgeries on 50 subjects, who will hopefully begin to enroll in January.

“The foundational thesis is we're trying to make sure that the world's largest medical center is also the world's largest med tech innovation center,” Eduardo Fonseca, interim CEO of EndoQuest Robotics, tells InnovationMap. Continue reading.

Houston billionaire Tilman Fertitta nominated as ambassador to Italy

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Houston billionaire and Rockets owner Tilman Fertitta has been nominated to serve as the United States ambassador to Italy, according to U.S. President-elect Donald Trump.

On Saturday, Trump sent the following statement via Truth Social Post:

"I am pleased to announce that Tilman J. Fertitta has been nominated to serve as the United States Ambassador to Italy. Tilman is an accomplished businessman, who has founded and built one of our Country's premier entertainment and real estate companies, employing approximately 50,000 Americans. Tilman has a long history of giving back to the community through numerous philanthropic initiatives, which include children's charities, Law Enforcement, and the medical community. Additionally, Tilman is the longest serving Chairman of the Board of Regents for the University of Houston. He also owns the Houston Rockets Basketball Team. Congratulations to Tilman, and his remarkable family!"

Fertitta, 67, also is the chairman, CEO, and president of Landry's Inc. and the chairman of the University of Houston's board of regents.

"It is an honor to be nominated to serve my country as ambassador to Italy and I look forward to the process ahead. Italy is such an extraordinary country with its wonderful people, culture, and history and its strategic importance to The United States of America," Fertitta said.

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