Here's what Houston startups snagged fresh funding last quarter

Q3 in review

Here's what Houston startups scored investment in Q3 of 2023. Photo via Getty Images

With Houston's business and innovation community firmly in its final leg of 2023, it's time to look back on funding from the previous quarter.

While last quarter revealed a decline in VC funding in line with the rest of the country, per PitchBook data, around 60 Houston-area companies secured venture funding in the third quarter. These deals spanned across angel and seed rounds all the way up to a monolith of a series C and unicorn status achievement.

According to InnovationMap reporting, 5 Houston-based companies announced VC funding between July and September. Here's a roundup of these second quarter deals — click on each story to read more.

Axiom's $350M series C round

Axiom Space CEO Michael Suffredini (right) has announced the company's series C round with support from Aljazira Capital, led by CEO Naif AlMesned. Photo courtesy of Axiom Space

Houston has another unicorn — a company valued at $1 billion or more — thanks to a recent round of funding.

Axiom Space released the news this week that it's closed its series C round of funding to the tune of $350 million. While the company didn't release its valuation, it confirmed to Bloomberg that it's over the $1 billion threshold. Axiom reports that, according to available data, it's now raised the second-most funding of any private space company in 2023 behind SpaceX.

Saudi Arabia-based Aljazira Capital and South Korea-based Boryung Co. led the round. To date, Axiom has raised over $505 million with $2.2 billion in customer contracts, according to the company.

“We are honored to team with investors like Aljazira Capital, Boryung and others, who are committed to realizing the Axiom Space vision,” Axiom Space CEO and president Michael Suffredini says in a news release. “Together, we are working to serve innovators in medicine, materials science, and on-orbit infrastructure who represent billions of dollars in demand over the coming decade. Read more.

VenoStent's $16M series A round

A Houston startup based out of the TMC Innovation Factory has announced funding and upcoming trials. Photo courtesy of TMC

Fueled by fresh funding in the bank, a medical device startup has announced upcoming trials.

VenoStent, Inc., a company developing an innovative tool to improve outcomes for hemodialysis patients, has closed $16 million in a series A round of financing. Two Charleston, South Carolina-based firms — Good Growth Capital and IAG Capital Partners — led the round.

The company also announced it received Investigational Device Exemption from the FDA for its United States clinical trial, SAVE-FistulaS.

“Our mission at VenoStent is to improve the quality and length of life of dialysis patients. On the heels of our very promising results in several preclinical studies and a 20-patient feasibility study that led to our Breakthrough Designation last year, this recent IDE approval is perhaps our biggest milestone to date," Tim Boire, CEO of VenoStent, says in a news release. "We now enter an exciting new epoch in our company’s development that we believe will ultimately result in FDA Approval and vastly improve the quality and length of life for patients." Read more.

CardioOne's $8 million seed round

CardioOne has fresh funding and new partners, resulting in a five-state expansion. Photo via Getty Images

With fresh funding, a Houston-based health tech platform that's less than a year old has grown its United States footprint.

CardioOne, which has created a cardiology care delivery enablement platform that serves independent cardiologists, has closed an $8 million seed round of funding and secured three new partnerships. Axios and Crunchbase report that the round has closed, and CardioOne confirms the funding and new partnerships in a press release.

The company has three new partnerships with independent cardiology clinics in New Jersey, Florida, and Pennsylvania, Cardiac Associates of New Jersey, Twin Hearts LLC, and Corrieius Cardiology. The trio joins existing partner practices in Texas and Maryland. Read more.

Industrial Daa Labs' $1.5M seed round

Industrial Data Labs announced the close of its $1.5 million seed round of funding. Photo via Getty Images

A Houston startup that's on a mission to transform and expedite data processing for its industrial clients has raised seed funding.

Industrial Data Labs announced this week that it's closed a $1.5 million seed round of funding. The company has created an applied artificial intelligence technology for the pipe, valve, fitting, and flange, or PVF, industry's inside sales team. The terms of the seed round were not disclosed.

"Our groundbreaking AI-Powered Inside Sales Copilot is transforming the way inside sales teams operate in the PVF industry," Marty Dytrych, co-founder and CEO of Industrial Data Labs, says in a news release. "By embedding our solution into existing BOM and MRO workflows, we empower teams to achieve unmatched efficiency, accuracy, and sales performance.” Read more.

Nanotech's oversubscribed funding round

NanoTech closed an oversubscribed round of funding, the company announced this week. Photo courtesy of NanoTech

A Houston startup that has developed an innovative coating material that can reduce energy consumption has raised fresh funding for its cross-country expansion.

NanoTech Inc. announced its latest funding news — an oversubscribed funding round that brings onboard a handful of new investors. The details of the round were not disclosed, but NanoTech did release that the round included participation from three institutional investors, two corporate-strategic investors, and seven family offices. These entities join initial investor, Austin-based Ecliptic Capital.

NanoTech's flagship product is a waterproof thermal coating, called the Nano Shield Cool Roof Coat, which began rolling out across the country this year. Not only does the product reduce energy costs for the building owner, but it reduces emissions as well. Read more.

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

VC roundup: Here's what Houston startups raised funds last quarter

following the money

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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Texas tops ranking of best state for investors in new report

by the numbers

Texas ranks third on a new list of the best states for investors and startups.

Investment platform BrokerChooser weighed five factors to come up with its ranking:

  • 2024 Google search volume for terms related to investing
  • Number of investors
  • Number of businesses receiving investments in 2024
  • Total amount of capital invested in businesses in 2024
  • Percentage change in amount of investment from 2019 to 2024

Based on those figures, provided mostly by Crunchbase, Texas sits at No. 3 on the list, behind No. 1 California and No. 2 New York.

Especially noteworthy for Texas is its investment total for 2024: more than $164.5 billion. From 2019 to 2024, the state saw a 440 percent jump in business investments, according to BrokerChooser. The same percentages are 204 percent for California and 396 percent for New York.

“There is definitely development and diversification in the American investment landscape, with impressive growth in areas that used to fly under the radar,” says Adam Nasli, head analyst at BrokerChooser.

According to Crunchbase, funding for Texas startups is off to a strong start in 2025. In the first three months of this year, venture capital investors poured nearly $2.9 billion into Lone Star State companies, Crunchbase data shows. Crunchbase attributes that healthy dollar amount to “enthusiasm around cybersecurity, defense tech, robotics, and de-extincting mammoths.”

During the first quarter of this year, roughly two-thirds of VC funding in Texas went to just five companies, says Crunchbase. Those companies are Austin-based Apptronik, Austin-based Colossal Biosciences, Dallas-based Island, Austin-based NinjaOne, and Austin-based Saronic.

Autonomous truck company rolls out driverless Houston-Dallas route

up and running

Houston is helping drive the evolution of self-driving freight trucks.

In October, Aurora opened a more than 90,000-square-foot terminal at a Fallbrook Drive logistics hub in northwest Houston to support the launch of its first “lane” for driverless trucks—a Houston-to-Dallas route on the Interstate 45 corridor. Aurora opened its Dallas-area terminal in April and the company began regular driverless customer deliveries between the two Texas cities on April 27.

Close to half of all truck freight in Texas moves along I-45 between Houston and Dallas.

“Now, we are the first company to successfully and safely operate a commercial driverless trucking service on public roads. Riding in the back seat for our inaugural trip was an honor of a lifetime – the Aurora Driver performed perfectly and it’s a moment I’ll never forget,” Chris Urmson, CEO and co-founder of Pittsburgh-based Aurora, said in a news release.

Aurora produces software that controls autonomous vehicles and is known for its flagship product, the Aurora Driver. The software is installed in Volvo and Paccar trucks, the latter of which includes brands like Kenworth and Peterbilt.

Aurora previously hauled more than 75 loads per week under the supervision of vehicle operators from Houston to Dallas and Fort Worth to El Paso for customers in its pilot project, including FedEx, Uber Freight and Werner. To date, it has completed over 1,200 miles without a driver.

The company launched its new Houston to Dallas route with customers Uber Freight and Hirschbach Motor Lines, which ran supervised commercial pilots with Aurora.

“Transforming an old school industry like trucking is never easy, but we can’t ignore the safety and efficiency benefits this technology can deliver. Autonomous trucks aren’t just going to help grow our business – they’re also going to give our drivers better lives by handling the lengthier and less desirable routes,” Richard Stocking, CEO of Hirschbach Motor Lines, added in the statement.

The company plans to expand its service to El Paso and Phoenix by the end of 2025.

“These new, autonomous semis on the I-45 corridor will efficiently move products, create jobs, and help make our roadways safer,” Gov. Greg Abbott added in the release. “Texas offers businesses the freedom to succeed, and the Aurora Driver will further spur economic growth and job creation in Texas. Together through innovation, we will build a stronger, more prosperous Texas for generations.”

In July, Aurora said it raised $820 million in capital to fuel its growth—growth that’s being accompanied by scrutiny.

In light of recent controversies surrounding self-driving vehicles, the International Brotherhood of Teamsters, whose union members include over-the-road truckers, recently sent a letter to Lt. Gov. Dan Patrick calling for a ban on autonomous vehicles in Texas.

“The Teamsters believe that a human operator is needed in every vehicle—and that goes beyond partisan politics,” the letter states. “State legislators have a solemn duty in this matter to keep dangerous autonomous vehicles off our streets and keep Texans safe. Autonomous vehicles are not ready for prime time, and we urge you to act before someone in our community gets killed.”

Houston cell therapy company launches second-phase clinical trial

fighting cancer

A Houston cell therapy company has dosed its first patient in a Phase 2 clinical trial. March Biosciences is testing the efficacy of MB-105, a CD5-targeted CAR-T cell therapy for patients with relapsed or refractory CD5-positive T-cell lymphoma.

Last year, InnovationMap reported that March Biosciences had closed its series A with a $28.4 million raise. Now, the company, co-founded by Sarah Hein, Max Mamonkin and Malcolm Brenner, is ready to enroll a total of 46 patients in its study of people with difficult-to-treat cancer.

The trial will be conducted at cancer centers around the United States, but the first dose took place locally, at The University of Texas MD Anderson Cancer Center. Dr. Swaminathan P. Iyer, a professor in the department of lymphoma/myeloma at MD Anderson, is leading the trial.

“This represents a significant milestone in advancing MB-105 as a potential treatment option for patients with T-cell lymphoma who currently face extremely limited therapeutic choices,” Hein, who serves as CEO, says. “CAR-T therapies have revolutionized the treatment of B-cell lymphomas and leukemias but have not successfully addressed the rarer T-cell lymphomas and leukemias. We are optimistic that this larger trial will further validate MB-105's potential to address the critical unmet needs of these patients and look forward to reporting our first clinical readouts.”

The Phase 1 trial showed promise for MB-105 in terms of both safety and efficacy. That means that potentially concerning side effects, including neurological events and cytokine release above grade 3, were not observed. Those results were published last year, noting lasting remissions.

In January 2025, MB-105 won an orphan drug designation from the FDA. That results in seven years of market exclusivity if the drug is approved, as well as development incentives along the way.

The trial is enrolling its single-arm, two-stage study on ClinicalTrials.gov. For patients with stubborn blood cancers, the drug is providing new hope.

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