Houston medical device startup closes $6M series A

money moves

This innovative medical device company has closed $6 million for further product development and clinical trials. Image via Getty Images

A Houston-based medical device company born out of the Texas Medical Center has closed its series A round of funding.

Ictero Medical's oversubscribed $6 million round was led by MedTex Ventures, S3 Ventures, and an undisclosed strategic investor, according to a news release. The company's novel cryoablation system was designed to treat high-risk gallstone disease patients and provide a less invasive and lower risk alternative to gallbladder removal surgery — something over 1 million Americans undergo annually.

“Our technology provides an immediate solution for critically ill patients who currently have no good treatment options, and also has the potential to benefit healthier patients who want to avoid surgery,” says Ictero Co-Founder and CEO Matthew Nojoomi in the release.

Recently, Ictero Medical entered into a partnership with Houston medical device development firm Biotex. The collaboration provides the company with engineering resources and in-house manufacturing tools. Ictero also received capital support from MedTex Ventures through its Biotex Medical Device Fund.

“We are excited about working with the Ictero team to advance its technology, which we believe can significantly improve patient experiences and outcomes by providing a non-surgical alternative to treating gallbladder disease,” says Biotex CEO Ashok Gowda in the release.

The fresh funds will be put toward further product development and initial clinical testing.

“MedTex Ventures is enthusiastic about Ictero’s novel cryoablation technology and its potential to solve the unmet need of inoperable patients with gallbladder disease,” says John Fichthorn, CIO of MedTex Ventures, in the news release. “Equally important is the team. We believe the combination of Ictero and Biotex’s technical capabilities, alongside the support from key investors with commercial experience, such as S3 Ventures, position the company for long term success.”

Ictero was founded as a part of the Texas Medical Center’s Biodesign Fellowship program in 2018. Since launch, the company has received a Phase I NSF grant and closed a $1 million seed round co-led by the Texas Medical Center Venture Fund and Texas HALO Fund.

“Ictero is at the forefront of pioneering cryotherapy for gallstone disease, and S3 Ventures is excited about the potential for Ictero’s novel solution to rapidly bring an impactful outcome to patients,” says Kim Rodriguez, venture partner at S3, in the release. “Our research suggests a substantial opportunity to help patients suffering from gallstone disease who are dependent on drainage catheters or too sick for surgery. We are joining a solid investment syndicate in supporting a very capable team.”

This week's roundup of Houston innovators includes Angela Holmes of Mercury Data Science, Ashok Gowda of BioTex, and Rachel Moncton of ClassPass. Courtesy photos

3 Houston innovators to know this week

who's who

Editor's note: In the week's roundup of Houston innovators to know, I'm introducing you to three local innovators across industries — data science, consumer tech, and medical device innovation — recently making headlines.

Angela Holmes, chief operating officer of Mercury Data Science

Mercury Data Science has taken a tool it originally developed for COVID-19 research and applied it into new areas of research and innovation. Photo courtesy of MDS

When the pandemic hit, the team at Mercury Data Science knew data was going to have a huge role to play. Last fall, MDS released an AI-driven app designed to help researchers unlock COVID-19-related information tucked into biomedical literature. The app simplified access to data about subjects like genes, proteins, drugs, and diseases.

Now, a year into the coronavirus pandemic, the company is applying this technology to areas like agricultural biotech, in which the platform enables researchers to sift through literature to dig up data about plant genetics, says Angela Holmes, chief operating officer at MDS. The lack of gene-naming standards in the world of plants complicates efforts to search data about plant genetics, she says.

The platform's ability to easily ferret out information about plant genetics "allows companies seeking gene-editing targets to make crops more nutritious and more sustainable as the climate changes to have a rapid way to de-risk their genomic analyses by quickly assessing what is already known versus what is unknown," Holmes says. Click here to read more.

Ashok Gowda, founder and CEO of BioTex

Houston-based BioTex works with medical device and health tech companies from all stages, from R&D to commercialization. Photo via biotexmedical.com

In the process of building a medical device company called Visualase and exiting it to Medtronic for over $100 million, Ashok Gowda learned a lot. And, over the past two decades, he's been sharing that knowledge and expertise of his and his team to medtech companies of all stages at Houston-based BioTex.

"Ultimately we built a nice infrastructure by supporting (the Visualase) spin out," Gowda tells InnovationMap. "And we learned a lot about not just product development, but about commercializing and creating a new market that may not exist. And we had some really good, experienced commercial folks we had hired on the Visualase side. I just think it's a good learning lesson that you can't really teach this stuff — you gotta experience it really to understand." Click here to read more.

Rachel Moncton, vice president of Global Marketing at ClassPass

Rachel Moncton shares why ClassPass tapped Houston as a prime place to expand. Photo courtesy of ClassPass

Rachel Moncton has lived all over the world in her career at fitness and wellness-focused consumer tech company, ClassPass — and her latest assignment has been standing up the company's fourth domestic office right here in Houston, Texas.

On last week's episode of the Houston Innovators Podcast, Moncton shares how Houston as a hub offers the growing company a chance to be a big fish in a small consumer tech pond.

"I get a lot of people saying, 'Houston? That's an interesting choice and not what we'd expect,'" Moncton says. "But that's one of the things we like about it. There's a good startup scene here but not a million different consumer tech companies, so it's nice that we are able to make a bit of a splash." Click here to read more.

Houston-based BioTex works with medical device and health tech companies from all stages, from R&D to commercialization. Photo via biotexmedical.com

Houston medtech company helping to get health care innovations from idea to exit

future of health care

Founding a health tech company is a process unlike any other startup. From the regulatory phase to clinical trials, health tech innovators face a long runway from idea to market, but a Houston-based organization has been working for over 20 years to help make that take-off process run more smoothly.

Ashok Gowda founded BioTex Inc. in 1998, and at the time he was finishing up his PhD at Texas A&M University and wanted a company to support his own health tech ideas, including Visualase Inc. After the real-time tissue monitoring system exited to Medtronic for over $100 million, Gowda realized he can put everything he had learned from taking Visualase from idea to exit and apply it to new medical device innovation.

At this point, BioTex has worked with over 40 medical device and health tech companies in some capacity — from early prototyping and research and development to FDA approval, manufacturing, and even distribution. With a staff of around 50 and an 18,000-square-foot facility just south of the Texas Medical Center, BioTex can support around 10 to 15 clients at a time — usually in the medical device sector but across specialties from neurosurgery, cardiology, radiology, urology, gynecology, orthopedics, anesthesia, and more.

BioTex has an 18,000-square-foot facility just south of the Texas Medical Center with R&D space for its clients. Photo via biotexmedical.com

"It's a pretty broad experience, and I think it gives us a good perspective when we talk to a physician or a group of entrepreneurs — we can pretty easily get up to speed or understand the problem because we've usually worked in this space before," Gowda says.

With the infrastructure BioTex has in place, Gowda says he still sees one aspect of health tech development that needs more attention.

"There are obviously a lot of really good ideas here and a lot of push to try to get those ideas to market. But, there are very few of those that have gotten to market and to become commercial products," Gowda says. "It does require a lot of capital to bring medical technology to market — and it usually requires a lot of time as well."

Health tech founders facing the long runway of development usually need enough funds to support them through the process — as well as the know how and support BioTex has.

"We think we solve few of these problems with our in-house expertise, but the one that we are now focused on and trying to solve is the funding gap," Gowda says. "When we see a good idea or a technology, we want to help them get that to market and not let that lack of funding be an impediment."

Ashok Gowda is the president and CEO of BioTex. Photo via biotexmedical.com

At Houston Exponential's second annual HX Capital Summit, four Houston entrepreneurs turned investors discussed their lessons learned. Getty Images

Here's what startups can learn from Houston exits

Success stories

One way to evaluate a city's innovation ecosystem is by the number of successful exits they've had. From startups being acquired by big companies to bringing in a private equity partner, exits can put a city on the map.

Houston has quite a few exits under its belt, and some of those entrepreneurs have stayed in town to fund future success stories. At Houston Exponential's second annual HX Capital Summit, four entrepreneurs discussed their exits, providing key lessons learned for entrepreneurs.

Houston has some perks.

One thing moderator Samantha Lewis, director at the GOOSE Society of Texas, asked each panelist was what made each entrepreneur start their companies in Houston — and furthermore, what made them stay here after their successful exit.

Panelist Ashok Gowda co-founded and served as COO at Visualase Inc., a real-time tissue monitoring system that exited to Medtronic for over $100 million. He now leads Biotex, a Houston-based medical technology investment firm and accelerator, as president and CEO.

For Gowda, Houston was obviously a key market for med tech, but it provided something even more once he reached the commercialization phase of a product.

"From a commercial standpoint, once the technology became commercial, it was an ideal location," Gowda says. "We were traveling all across the US, and it was a nice hub. We're right in the center of the country, and you can get to either coast very quickly."

The panel also agreed that the quality of life in Houston played a major role in settling down.

You might need to rethink your executive team.

The panel full of venture capitalists of course touched on the ability to fundraise in Houston, as each panelist had been on both sides of the table. For Gowda, it's pretty simple.

"If you're struggling to raise money, you either have a bad idea or the wrong team," he says, adding that if you really believe in your idea, take a good hard look at who's at the leadership level of your team.

Talent is still a challenge in Houston.

Of course, if you do identify a problem within your team, finding the right leader for your technology might be difficult in Houston.

Keith Kreuer, who was also on the panel, is principal at RedHouse Associates, a group of angel investors that invest like a find would, but without having a fund. Between Kreuer and his team, they were involved in 10 startups before forming the investment group.

"We could find developer and sales talent here, but to get to that higher executive talent, we had to go out to other places," Kreuer says.

However, not all of the panelists agreed that talent was a major challenge they faced. Some noted that they got lucky with the talent they found.

Don Kendall, CEO of Kenmont Capital Partners, came to Houston to run a power company and family office. He turned $100,000 into $1.6 billion and now is a member of GOOSE.

"We had no problem getting the engineering talent," Kendall says. "We really found Houston to be a good environment, and it's only just continued to improve."

Playing to Houston's strengths might be key to success.

For Gray Hall, managing director at Austin-based BuildGroup, which focuses on writing big checks to a small amount of software startups, he knew how to play to his company's and Houston's strengths.

Hall previously served as CEO of AlertLogic, which had a private equity exit in 2013, and Hall stayed on until 2018 as the company continued to grow. He also co-founded Veracenter, which had a strategic exit after growing to $80 million in annual revenue.

"The common theme across both companies and why we were able to grow is real simple: Customer and people," Hall says.

Houston might be one of the country's best kept secrets when it comes to midmarket activity, Hall notes — midmarket companies being defined as those with $50 million to $1 billion in revenue.

"What Houston doesn't get enough credit for is the midmarket in Houston, which I think is tremendous," Hall says. "It's as strong as anywhere else in the country."

AlertLogic was able to tap into this midmarket to quickly grow its client base.

Something else that differentiates Houston from other cities is its culture, which is less focused on the glitz and glam and more focused on hard work.

"Engage with people that have a credible story and a credible plan to solve a problem," he says.

Houston is growing.

One thing each of the entrepreneurs agreed on is that the city is only growing its resources and quality of startups.

"I see Houston as sort of a startup in the startup world," Kreuer says. "And, what we're trying to do is grow and catch up to the West Coast and the East Coast, but I think Texas as a whole is going to be pretty powerful, and Houston is going to be a central part of that mainly because we have the markets here, and the people in the area and the talent to do that."

As Houston's success stories become more frequent, this provides an avenue for more entrepreneurs turned investors.

"When you've done it before, you've learned the lessons, and you feel like you can do it again and again," Gowda says. "That's what we're trying to do. You see all the possibilities here."

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5 Houston deep tech startups pushing the boundaries of their industries

meet the finalists

Houston has long been at the forefront of innovation, from NASA’s Johnson Space Center to its startup ecosystem using technology to disrupt industries.

As part of the 2026 Houston Innovation Awards, our Deep Tech Business category will honor an innovative startup providing technology solutions based on substantial scientific or engineering challenges, including those in the AI, robotics and space sectors.

Five deep tech companies have been named finalists for the 2026 award.

Read more about these businesses, their founders and their breakthrough technologies below. The 2026 winners will be announced on InnovationMap.com in mid-November.

Casimir

Battery tech startup Casimir develops semiconductor chips that produce continuous electrical power straight from the quantum vacuum, without the need for a battery, cord or external charge source. The company is targeting commercialization for its first-generation MicroSparc chip by 2028.

Harold “Sonny” White founded Casimir in 2023 after nearly two decades at NASA. The company emerged from stealth with a $12 million seed round in 2026. It was also awarded an STTR Phase I contract from the U.S. Space Force's SpaceWERX to support the development of the company's solid-state generator for potential use by the Department of the Air Force earlier this year.

FocisAI

Artificial intelligence startup FocisAI helps refinery owner-operators unlock actionable insights from 3D scans and images.

FocisAI was founded by CEO Tyler Wooten, COO Colin Snell and CTO Kyle Snell in 2026. It is a member of Greentown Labs and launched a seed round in September, which is expected to close by the end of the year, according to the company's application. It has rolled out 10 pilot programs and is looking to move into recurring, facility-scale deployments and scale its team in Houston this year.

Machine Saver Inc.

Industrial tech startup Machine Saver Inc. builds wireless and wired vibration and proximity sensors to tell heavy industry when a machine is about to fail. The company's technology runs on an 8-plus-year battery life and helps operators reduce downtime, improve maintenance and extend equipment life.

Machine Saver was founded by CEO Colton Bach and Quentin Bach in 2013. Its customers and partners include Houston Methodist, Blue Bell, Genemco, as well as energy and heavy industry, food and beverage, and cold chain companies, according to its application. The company is raising a Series A.

Square Robot

Energytech startup Square Robot develops and operates submersible inspection robotics that inspect aboveground storage tanks while they remain in service. The robots reduce downtime and costs, improve worker safety and limit hydrocarbon emissions.

Square Robot launched its Houston office in 2019 and closed a Series B in 2025. It plans to complete its first U.S. Navy demonstrator tank in November and is also developing real-time inspection software.

Venus Aerospace

Spacetech company Venus Aerospace is developing a high-thrust rotating detonation rocket engine (RDRE) that replaces the subsonic combustion used in conventional rocket engines. The RDRE is a compact, simpler engine that can deliver up to 15 percent greater efficiency for defense and space applications. It completed its first U.S. flight test of the engine last summer.

Venus Aerospace was founded in 2020 by CEO Cassie Duggleby and CTO Andrew Duggleby. It raised a $20 million Series A in 2022 and $42 million Series A2 in 2025. It closed a $91 million Series B earlier this year and expanded its leadership team. The company is working toward longer-duration and higher-thrust testing and advancing its flight program.

Houston leads U.S. with the biggest surge in millionaire renters

Rent Report

The number of millionaire renters and homeowners in the U.S. has surged over the last five years, and Houston has soared ahead of the rest with the largest growth rate among these affluent renter households.

Houston leads the nation with the No. 1 increase in millionaire renters from 2020 to 2024, a new RentCafe study found. The number of these wealthy households increased from 18 to 232 over the last five years, representing a 1,189 percent growth rate.

"The pandemic accelerated the shift as remote work pushed the wealthy to relocate to lower-tax metros like Houston, where millionaire renters grew 13-fold, versus 3.9-fold for owners," the report said. "Granted, 232 households is still a tiny fraction of the Houston metro’s roughly 2.7 million households, but the growth rate far outpaces any other major metro."

Nationwide, the number of millionaire renter households grew 229 percent from 2020 to 2024, outpacing the 193 percent growth rate among millionaire homeowners.

Dallas was the only other Texas metro to crack the top 10. The number of millionaire renter households in North Texas has more than quintupled, from just 30 in 2020 to 165 in 2024. That represents a growth rate of 450 percent, which — surprisingly — is only the eighth highest nationwide.

But when it comes to the largest populations of millionaire renters, New York City and San Francisco still lead the way. New York claimed the No. 1 spot with nearly 7,300 millionaire renters living in the city in 2024. Houston ranked 12th on that list.

Elsewhere in Texas, Austin and Dallas ranked as the 16th and 17th, respectively, for the largest population of millionaire renters. There were 206 millionaire renters living in Austin in 2024, and 165 in Dallas.

This is who the typical millionaire renter is
The report also revealed a surprising statistic about the typical millionaire renter in the U.S. — a lot of them are millennials working in "white-collar, high-earning fields."

"Nearly half (49 percent) of millionaire renters are Millennials, and the number of affluent Millennial renter households surged 392 percent during the five-year period," the report said. "Gen X follows with 33 percent of millionaire Gen X households renting after increasing by 147 percent."

The report continued, "Although Gen Z still represents a small share of millionaire renters (just 2 percent of the total), no generation has expanded faster: Gen Z millionaire renter households leaped from fewer than a dozen to more than 400 — a tiny cohort today, but one that was virtually nonexistent five years ago."

The top three most common professions for millionaire renters are chief executives, software developers, and managers, the report additionally found. In Houston, the surge of wealthy newcomers are mostly executives, professional athletes, and entertainers.

"These roles tend to generate steady, substantial income without necessarily tying workers to one location, making renting a practical fit, rather than a financial necessity," the report said.

Hotspots for millionaire homeowners
In RentCafe's separate list comparing the top 10 most popular U.S. metros for millionaire homeowners, Houston ranked 12th nationally with 4,374 millioniare homeowners living in the metro as of 2024. These wealthy Houstonians are most likely working as chief executives, physicians, managers, and lawyers and judges.

Houston has already proven to be a hotspot for millennial homebuyers, and the latest RentCafe data says millennials make up 19 percent of all millionaire homeowners in the U.S. Gen Xers and Baby Boomers still maintain the largest shares of millionaire homeowners nationwide, at 45 and 33 percent, respectively.

Dallas (No. 10) and Austin (No. 20) also appeared among the hottest metros for millionaire homeowners.

Only one Texas city appeared among RentCafe's list of the 20 fastest-growing metros for millionaire homeowners: College Station ranked 13th nationwide with a growth rate of 1,329 percent. From 2020-2024, the number of millionaire homeowners residing in College Station grew from 14 to 200.

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This article originally appeared on CultureMap.com.

Houston ranks high on best cities for small-business expansion report

business growth

For small businesses looking to expand, Houston might be the right place.

Among 56 major U.S. metros, Houston grabbed the No. 6 spot on a new list of the metros boasting the strongest environments for small-business expansion.

A 2025 report from the state comptroller’s office showed roughly 970,000 small businesses operate in the 13-county Gulf Coast region. The region includes the majority of the Houston metro area.

“Whether it’s a family-owned shop on Main Street or a fast-growing startup, small businesses power our state’s economic engine, create opportunity, and strengthen the character of every Texas community,” Kelly Hancock, who was interim state comptroller when the report was released, said in a press release.

Business lending platform Clarify Capital analyzed five factors to develop the list: job growth, business entry and exit, net job creation, and unemployment.

Overall, the Nashville area claimed the No. 1 spot on the list. Other major Texas metros also cracked the top 10, including Austin at No. 3 and Dallas-Fort Worth at No. 7.

“The highest-ranking metros combine labor-market momentum with steady business formation and relatively favorable local employment conditions,” Clarity Capital says.

The Houston metro ranked sixth for job growth, 11th for business entry rate, 38th for business exit rate, second for net job creation rate, and 50th for unemployment rate.

“For business owners, the ranking is a starting point rather than a guarantee,” Clarify Capital says. “Local demand, competition, operating costs, and access to capital still shape whether an expansion works.”

“Building enough cash-flow room for hiring, equipment, and unexpected expenses can help small and midsize business owners take advantage of a strong market without stretching the business too thin,” the company adds.

Of course, money fuels small-business expansion in the Houston area or anywhere else.

According to an analysis of SBA loan data by feasibility consulting firm MMCG, the Houston metro area saw 1,685 approvals for 7(a) loans and 101 approvals of 504 loans in the federal government’s 2025 budget year. The approval numbers for both loan categories increased from the previous year.

Altogether, the 7(a) and 505 loans exceeded $1 billion.

The data from the U.S. Small Business Administration suggests small-business expansion may be on the rise in the Houston area.

Further potential evidence of small-business expansion in the Houston area: The region experienced a 92 percent rise in account applications from 2024 to 2025 submitted to Bluevine, a small-business banking platform. The Houston metro ranked fifth for the number of Bluevine small-business applications in 2025.

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