Helix Earth's technology is estimated to save up to half of the net energy used in commercial air conditioning, reducing both emissions and costs for operators. Photo via Getty Images

A Houston startup with clean tech originating out of NASA has secured millions in funding.

Helix Earth Technologies closed an oversubscribed $5.6 million seed funding led by Houston-based research and investment firm Veriten. Anthropocene Ventures, Semilla Capital, and others including individual investors also participated in the round.

“This investment will empower the Helix Earth team to accelerate the development and deployment of our first groundbreaking hardware technology designed to disrupt a significant portion of the commercial air conditioning market, an industry that is ready for innovation,” Rawand Rasheed, Helix Earth co-founder and CEO, says in a news release.

Helix Earth was founded based on NASA technology co-invented by Rasheed and spun out of Rice University and has been incubated at Greentown Labs in Houston since 2022. Currently being piloted, the technology is estimated to save up to half of the net energy used in commercial air conditioning, reducing both emissions and costs for operators.

“The enthusiastic response from investors reinforces our team’s confidence in our ability to transform innovation-starved sectors such as commercial air conditioning with an easy-to-install-and-maintain solution that benefits distributors, mechanical contractors, and most of all, building owners, with a positive benefit to the environment,” Rasheed says.

Prior to its raise, the company received grant funding from the National Science Foundation and the United States Department of Energy.

“We couldn’t be more excited to partner with the Helix Earth team," Maynard Holt, Veriten’s founder and CEO, adds. "We were so impressed with their unique combination of a technology with broad applicability across multiple industries, a product that will have an immediate and measurable impact on our energy system, and a fantastic and well-rounded team.”

Helix Earth, per the release, reports that is also looking to provide solutions for commercial humidity control and carbon capture.

CrossBridge Bio, formed during the TMC Innovation’s Accelerator for Cancer Therapeutics program, closed a $10 million seed round led by TMC Venture Fund and CE-Ventures. Photo via Getty Images

Houston biotech startup secures $10M seed round to propel cancer-fighting therapy from bench to bedside

fresh funding

A Houston biotech company based off research out of UTHealth Houston has raised seed funding to continue developing its cancer-fighting therapeutic.

CrossBridge Bio, formed during the TMC Innovation’s Accelerator for Cancer Therapeutics program, closed a $10 million seed round led by TMC Venture Fund and Crescent Enterprises' VC arm, CE-Ventures. The round also included participation from Portal Innovations, Alexandria Venture Investments, Linden Lake Labs, and several pre-seed investors.

“We are thrilled to have the support of such experienced investors who share our vision of bringing transformative cancer therapies to patients in need,” Michael Torres, CEO of CrossBridge Bio, says in a news release. Torres served as an entrepreneur in residence of ACT.

The company is working on the next-generation of antibody-drug conjugates (ADC) therapeutics that process dual payloads as targeted treatments for a set of challenging cancers. The innovative treatment is based on research from UTHealth experts Dr. Kyoji Tsuchikama and Dr. Zhiqiang An.

“Our dual-payload ADC technology is designed to deliver synergistic therapeutic effects using highly stable linkers that ensure payload release only within the targeted cancer cells, thereby maximizing their therapeutic effectiveness while minimizing the liabilities associated with uptake in unintended tissues, as seen with many of today’s cancer treatments," Torres continues.

He explains that the funding will toward advancing CrossBridge's first development candidate, CBB-120, into preclinical non-GLP toxicology studies in addition to derisking the company’s proprietary linker technology with dual-payload applications, per the release.

As a result of the raise, William McKeon, president and CEO of the Texas Medical Center, and Damir Illich, manager of life sciences of CE-Ventures, will join CrossBridge Bio’s board of directors.

“We are proud to back CrossBridge Bio in their mission to develop the next generation of cancer therapies,” McKeon says in the release. “Their dual-payload ADCs are designed to deliver targeted drug release within cancer cells with greater stability, precision, and control. These breakthrough advancements have the potential to change patients’ lives worldwide and we look forward to helping drive their development.”

Paladin’s AI-enhanced autonomous drones help public safety agencies, such as police and fire departments, respond to 911 calls. Photo via paladindrones.io

Houston startup designing emergency response drones lands $5.2M in seed funding

cha-ching

Houston-based Paladin, whose remotely controlled drones help first responders react quickly to emergencies, has collected $5.2 million in seed funding.

Gradient, a seed fund that backs AI-oriented startups, led the round. Also participating were Toyota Ventures, the early-stage VC arm of Japanese automaker Toyota; venture capital firm Khosla Ventures; and VC fund 1517.

“We believe Paladin will drive meaningful change in public safety and redefine how communities are served,” Gradient said in an announcement about the seed round.

In 2019, Paladin received $1.3 million in seed funding from Khosla Ventures and Gmail creator Paul Buchheit, a group partner at Y Combinator. In 2018, the year it was co-founded by Divyaditya Shrivastava and Trevor Pennypacker, Paladin graduated from Y Combinator’s three-month boot camp.

Paladin’s AI-enhanced autonomous drones help public safety agencies, such as police and fire departments, respond to 911 calls. These drones provide aerial views of emergency scenes in an effort to decrease response times, improve “situational awareness,” and save lives, according to a Gradient blog post.

Among the agencies that have tried out Paladin’s technology is the Houston area’s Memorial Villages Police Department. The department participated in a three-month Paladin pilot project in 2019.

"(This is) one of the first departments in the country to be testing this technology," Shrivastava told InnovationMap in 2019. "We're very limited in the area that we cover, and that's just because we're taking baby steps and going as carefully and deliberately as possible."

Gradient says more than 12,000 drone missions have been performed using Paladin’s hardware and software platform. Agencies that have adopted the platform report average response times under 90 seconds. Furthermore, the technology has allowed them to resolve nearly one-third of 911 calls without dispatching first responders.

“Paladin keeps innovating, recently launching Payload Drop, a groundbreaking feature that enables drones to deliver lifesaving equipment — such as Narcan, life vests, and AEDs — directly to emergency scenes,” says Gradient.

On its website, Paladin says it envisions autonomous drones responding to every 911 call in the U.S. by 2027.

“The information is paramount, the technology exists and is rapidly improving, and the need is there. We want to help,” Paladin proclaims.

Diakonos Oncology Corp. closed its seed round to the tune of $11.4 million. Photo via Getty Images

Houston oncology therapeutics co. raises $11.4M in seed funding

money moves

A Houston-based, clinical-stage immuno-oncology company has raised an oversubscribed round of seed funding.

Diakonos Oncology Corp. closed its seed round to the tune of $11.4 million. The funding will go toward supporting the company's Phase 2 trial — slated for later this year, following its ongoing Phase 1 study — and operations through late next year. California-based biotechnology investment firm Restem Group Inc. led the round, and existing investors contributed as well.

“We greatly appreciate the support of these investors in sharing our passion for improving the lives of patients suffering from deadly cancers such as glioblastoma,” Mike Wicks, Diakonos CEO, says in a news release. “The fact that this financing is nearly triple our initial target also shows they share our confidence in the effectiveness of our unique cancer therapy.”

Founded in 2016, the company recently received FDA Fast Track designation for its dendritic cell vaccine, DOC1021, which targets glioblastoma multiforme, or GBM, the most common and most lethal malignant brain tumor in adults. Diakonos also received the designation for its pancreatic cancer treatment.

"We are thrilled to invest in this groundbreaking company that is at the forefront of cancer treatment innovation. As a firm deeply involved in the cell therapeutic field, we recognize the immense potential of their pioneering work with dendritic cell therapies and we are confident that this can become a new standard of care for cancer in the future," adds Andres Isaias, executive chairman of Restem Group Inc.

Diakonos Oncology's DOC1021 uses the body’s natural anti-viral immune response to fight GBM. The vaccine mimics viral infection with the patient’s cancer markers. Essentially, DOC1021 uses the body’s own natural ability to detect and eliminate infected cells. According to the company, all of the patients who have tried the treatment have exceeded survival expectations. And DOC1021 appears to be extremely safe, with no serious adverse effects having been reported.

The projects focus on an array of topics from the challenges of harmful space radiation to the reliability of space robots. Photo via Pexels

Rice University awards $150,000 to space researchers

future of space

The Rice Space Institute has awarded $150,000 in seed funding to six university researchers to further their work in space-related science and engineering.

The projects each will receive $25,000 until June 2025, according to Rice. They focus on an array of topics from the challenges of harmful space radiation to the reliability of space robots.

“These projects collectively represent RSI’s commitment to pioneering studies that advance Rice’s space research portfolio,” RSI Director David Alexander, said in a statement.

The projects include:

  • Co-advancement of formal methods and prognostic digital twins for reliability and resilience of space robotics: The project aims to make space robots more reliable by improving the lifespan of robotic components operating in space.
  • Development of 3D-printed waveguide arrays for snapshot spectrometers for Earth remote sensing observations: The project will develop 3D waveguide components and a hyperspectral imaging system that will help provide data on Earth's water cycle. It's led by Tomasz Tkaczyk.
  • Haptic sensory feedback augmentation to mitigate vestibular deficits following microgravity exposure: The project focuses on a device that uses vibrotactile feedback to improve astronauts' balance and movement impairments due to microgravity. It's led by Marcia O’Malley, Vanessa Sanchez, Shane King and Kyra Stovicek.
  • Modeling framework for bioelectricity and its effect on the mechano-biology of wounds to accelerate healing in microgravity environments: The project focuses on the effect of bioelectricity on wound healing in microgravity. It's led by Raudel Avila, Swathi Balaji and K. Jane Grande-Allen.
  • The role of the environment in planet formation: The project will develop a conference at at the Rice Global Paris Center for foster collaboration between Rice, RSI and international institutions for students, researchers and faculty. It's led by Megan Reiter.
  • Spark plasma sintered high-density and lightweight boron nitrides ceramics for radiation shielding applications: The project aims to create boron-nitride ceramics to shield against harmful space radiation. It's led by Robert Vajtai and Abhijit Biswas.

Earlier this year, Alexander was named to the first-ever Texas Aerospace Research and Space Economy Consortium Executive Committee, part of the new Texas Space Commission. TARSEC is composed of representatives of each higher education institution in the state and aims to ensure that Texas remains a "powerhouse" in the space industry, Lieutenant Governor Dan Patrick said in a release.

Meanwhile, The Translational Research Institute for Space Health, or TRISH, which is part of BCM’s Center for Space Medicine, announced plans to launch six more experiments into space this year, focused on topics ranging from motion sickness to genome alterations during space travel.
Should your startup opt for SAFEs or convertible notes on your next funding round? This Houston expert weighs in. Photo via Getty Images

Houston startup adviser on navigating SAFE, convertible notes in funding rounds

guest column

As both a founder and occasional early-stage investor in the Houston ecosystem, I've seen firsthand the opportunities and challenges surrounding seed funding for local startups. This critical first fundraising round sets the trajectory, but navigating the landscape can be tricky, especially for first time founders who may not be familiar with the lingo.

One key dynamic is choosing the right deal structure — SAFEs (Simple Agreement for Future Equity) vs. convertible notes are the most common vehicles early stage startups use to raise capital and are far more founder-friendly than a priced round.

Let's start first with what the have in common:

  • Both allow you to defer setting a valuation for your company until a later (likely priced) round, which is useful in early stages or pre-revenue companies
  • Both are cheaper and faster to execute than a priced round, which cash-strapped early stage founders like
  • Both can have terms like valuation cap, discount, conversion event, and pro rata rights.
  • Both are less attractive to investors seeking immediate equity (especially important if starting the QSBS clock is part of your investors strategy or if the investor is newer to startup investing)
  • Both can create messy cap tables and the potential for a lot of dilution for the founders (and investors) if they are used for multiple raises (especially with different terms)

While as you can see they have similarities, they have some important differences. Let's dig in on these next:

SAFEs:

  • Created by Y Combinator in 2013, the intent was to create a simplified, founder friendly agreement as an alternative to the convertible note
  • Is an agreement for future equity for the investor at a conversion event (priced round or liquidation event) which converts automatically.
  • It's not a debt instrument and does not accrue interest or have a maturity date.
  • Generally have much lower upfront legal costs and faster to execute

Convertible Notes:

  • A debt agreement that converts to equity at a later date (or conversion event like a priced round)
  • Accrues interest (usually 2 to 8 percent) and has a maturity date by which the note must either be repaid or convert to equity. If you reach your maturity date before raising a qualifying round, you can often renegotiate to extend the maturity date or convert the note, though be prepared to agree to higher interest rates, additional warrants, or more favorable conversion terms.
  • More complex and take longer to finalize due to non-standard terms resulting in higher legal and administrative costs

It's worth reiterating that in both cases, raising multiple rounds can lead to headaches in the form of complex cap tables, lots of dilution, and higher legal expenses to determine conversion terms. If your rounds have different terms on discounts and valuation caps (likely) it can cause confusion around equity and cap table structure, and leave you (the founder) not sure how much equity you will have until the conversion occurs.

In my last startup, our legal counsel — one of the big dogs in this space for what it's worth — strongly advised us to only do one SAFE round to prevent this.

Why do some investors tend to prefer convertible notes?

There are a few reasons why some investors, particularly angel investors from developing startup ecosystems (like Houston), prefer convertible notes to SAFEs.

  • Because they are structured as debt, note holders have a higher priority than equity investors in recovering their investment if the company fails or is liquidated. This means they would get paid after other creditors (like loans or credit cards) but before equity investors, increasing the likelihood of getting some of their money back.
  • The interest terms protect investors if the founder takes a long time to raise a priced funding round. As time passes, interest accumulates, increasing the investor's potential return. This usually results in the investor receiving a larger equity stake when the note converts. However, if the investor chooses to call in the note instead, the accrued interest would increase the amount of money owed, similar to a traditional loan
  • More defined conversion triggers (including a maturity date) gives investors more control and transparency on when and how their investment will convert.
  • Can negotiate more favorable terms than the standard SAFE agreement, including having both a valuation cap and a discount (uncommon on a SAFE, which usually only has one or the other), interest rates, and amendment clauses to protect them from term revisions on earlier investors by future investors (called a cram-down), etc.
We'll go over what the various terms in these agreements are and what to look out for in a future article

How to choose:

  • Consider your startup's stage and valuation certainty — really uncertain or super early? Either of these instruments are preferable to a priced round as you can defer the valuation discussion
  • Assess investor preferences in your network — often the deciding factor if you don't have a lot of leverage; most local angels prefer c-notes because they see them as less risky though SAFEs are becoming more common with investors in tech hubs like Silicon Valley
  • Evaluate your timeline and budget for legal costs — as I mentioned, SAFEs are way less expensive to execute (though still be prepared to spend some cash).
  • Align the vehicle with your specific goals and growth trajectory

There's no one-size-fits-all solution, so it's crucial to weigh these factors carefully.

The meanings of these round terms like "seed" are flexible, and the average seed funding amount has increased significantly over the past decade, reaching $3.5 million as of January 2024. This trend underscores the importance of choosing the right funding vehicle and approach.

Looking ahead, I'm bullish on Houston's growing startup ecosystem flourishing further. Expect more capital formation from recycled wins, especially once recently minted unicorns like High Radius, Cart.com, Solugen, and Axiom Space exit and infuse the ecosystem with fresh and hungry angels, new platforms beyond traditional venture models, and evolving founder demographics bringing fresh perspectives.

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Adrianne Stone is the principal product manager at Big Cartel and the founder of Bayou City Startups, a monthly happy hour organizer. This article original ran on LinkedIn.

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CultureMap Emails are Awesome

3 Houston innovators to know right now

who's who

Editor's note: InnovationMap regularly introduces its readers to a handful of Houston innovators recently making headlines with news of innovative technology, investment activity, and more. Our first January batch includes three innovators across social impact, health care, and more.

Phillip Yates, CEO of Equiliberty

Phillip Yates joins the Houston Innovators Podcast to share why 2025 is the year of launch for Equiliberty. Photo courtesy of Equiliberty

For Phillip Yates, this year will be the year of launch. The attorney-turned-entrepreneur has been working on his fintech platform, Equiliberty, for years now, but come the first half of 2025, it's go time.

"We're going to release our technology in Q2 of this year, and we're looking to commercialize it by the end of this year," Yates says on the Houston Innovators Podcast.

The platform connects users with resources to build wealth. Yates, along with his co-founders, Rachel Howard and Cody Bailey, created the company with the mindset that people with lower financial means can take control of their own financial success — in a way that doesn't take away from anyone else. Continue reading.

Meagan Pitcher, co-founder and CEO of Bairitone Health

Meagan Pitcher, co-founder and CEO of Bairitone Health, joins the Houston Innovators Podcast. Photo courtesy of Bairitone

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. Continue reading.

Moody Heard, CEO of BuildForce

Houston-based Buildforce is developing a technology to better connect contractors and the trade professionals they employ. Photo courtesy of Buildforce

Houston-based Buildforce announced it has acquired Ladder, which is a Y Combinator-backed, technology-enabled construction labor marketplace.

The acquisition is part of Buildforce’s expansion plans into the southeastern U.S. and during a time of increased demand for skilled construction talent. Buildforce will work to leverage the Ladder customer base of over 200 customers across six states, as well as its extensive electrician network of over 10,000 pre-screened electricians, which is the largest in the Southeast.

“There are two major problems plaguing the construction labor market,” Moody Heard, co-founder and CEO of Buildforce, says in a news release. “One, the project-based nature of construction work means tradesmen are constantly ‘working themselves out of a job’, meaning high employee turnover. And two, the industry is experiencing a secular decline in the supply of tradesmen relative to surging demand.” Continue reading.

Houston sportstech startup shoots, scores in Pharrell Williams competition

on the rebound

Anyone who's witnessed even just a minute of basketball knows how important accuracy is in sinking shots on the court. One Houston startup has developed a device to help practice make perfect in a game.

GRIND’s portable basketball shooting machine, the first of its kind, was created by founder and CEO Thomas Fields, former basketball phenom at Houston’s Reagan High School (now Heights High School).

“I remember being on varsity as a freshman and shooting thousands of shots every day trying to be the best,” says Fields. “My school bought a shooting machine, but they never let me use it. It was a game-changing piece of equipment, and I didn’t even have access because the gyms were always closed or closing.

“And another major problem was getting your rebounds, so we set out to make a portable basketball rebounding machine, so you could take it anywhere like home, the park, or the gym. It was also important to make it affordable, too.”

The GRIND shooting machine is available online. Photo via grindbasketball.com

At just 110 pounds, the GRIND shooting machine is 54 percent lighter than other home shooting machines, has a 12-foot net, and needs just 90 seconds to set up or take down.

“Our portable shooting machine has been on the market for about three, four years now,” says Fields. “So now it's time to kind of accelerate the growth, and that’s pretty exciting. We really have our sights on NBA Africa for a partnership there. Another one is Adidas; we are collaborating with them right now and they're also one of the sponsors of Black Hat Mission. And hopefully, we would like to land some NBA guys to invest and really get behind our sportstech company, but also make a significant impact in the community by getting kids into tech through sports.”

To that end, GRIND recently won second place in a competition from Black Ambition, an organization founded by Pharrell Williams. With the tagline, “Uninterrupted ambition. Unmatched impact,” the Black Ambition Prize celebrates underrepresented founders globally.

“When I initially heard of Black Ambition, I just kind of heard that Pharrell had started a venture fund aimed at uplifting black and brown entrepreneurs,” says Fields. “And when I read more about it, I realized that their mission perfectly aligned with GRIND. Our goal is to try to get kids into tech and STEM, but use sports as the conduit and the bridge to get them there.

“We applied for the million-dollar cash prize for first place, but took second place, which is a $250,000 investment in the company. So now that Pharrell and Black Ambition are behind us, we are going out and raising some more capital to hit that hyper stage that we're going into. We are launching our software next year and our hardware has really been growing.”

Fields pitched GRIND on Shark Tank in May of 2021, where he was offered a joint deal for $250,000 for 25 percent of the company from both Mark Cuban and Barbara Corcoran. While Fields agreed on the show, the finalized terms of the deal were not disclosed.

- YouTubeThomas Fields is seeking $250000 for a 5% stake of GRIND. From Season 12 Episode 23 Watch Now: ...

As a startup, GRIND, a consumer brand developing the world’s first smart ecosystem of sports equipment products, represents the continued uptick with sportstech innovation in Houston.

“We want to revolutionize the world of sports equipment by leveraging cutting edge technology by developing sports equipment that can seamlessly connect to software, enhancing athletic performance, and pushing athletes to achieve their peak potential,” Fields says.

As GRIND continues to push forward and expand its footprint, it’s also looking to expand its customer base.

“I think the target users are middle school and high school athletes,” says Fields. “These are the kids that are striving to be great athletes and striving to get into college. We also have colleges that have our product, as well. But mostly, the customer is the parents of those athletes. That's really who we're trying to get excited.

“And then, of course, there are the coaches and trainers. They own gyms; they own organizations and need equipment for their schools and universities. That's another target customer of ours for sure.”

Ultimately, GRIND will continue to build on Fields’ initial inspiration to design products and technologies with the athletes — especially hoopers — in mind.

“Our goal in the next few years is to really amp up the scholarships that we facilitate to funnel kids into STEM tech careers and pathways,” says Fields. “GRIND Day, which is a proclamation the City of Houston gave us for August 12 each year, is a day where we bring sports, tech, and culture all under one umbrella. Kids see us using 3D printers and lasers to cut the products that we make in our warehouse, which is in an underserved community, which hopefully makes them think it’s cool and want to get into technology.”

Houston airport cut traffic congestion by 99 percent during peak travel season

A Soaring Improvement

Years of physical improvements and other initiatives paid off this holiday season at George Bush Intercontinental Airport (IAH). Despite seeing a record number of flyers, traffic congestion at the airport dropped by an astounding amount.

“Our goal was to deliver a seamless journey during one of the busiest travel seasons of the year,” said Jim Szczesniak, director of aviation for Houston Airports. “The results show that our investments in infrastructure, technology and customer service are paying off. We are proud of our team and the traveling public for working together to make this holiday season a success. Our coordinated efforts between Houston Airports and Houston Police kept traffic flowing smoothly at our departure curbs while passengers followed instructions and used cell phones lots effectively. These efforts, paired with infrastructure improvements like the new International Arrivals Curb and expanded Terminal C garage entrance, demonstrate our commitment to delivering world-class service and efficiency.”

The holiday flying season officially lasts from December 20 to January 6. Data from Houston airports shows that between December 20 and December 30, 1.7 million passengers passed through IAH, a 21 percent increase over the same period in 2023. However, the number of heavy traffic periods fell 90 percent and periods of severe traffic fell 99 percent. To put it another way, passengers at IAH spent 4.4 hours in severe traffic during Christmas 2023. This past Christmas, it was just 2 minutes, an astounding reduction.

This was accomplished with the long-awaited new IAH International Arrivals Curb, which opened for public use on December 14. The new arrivals curb features seven lanes for dedicated drop-off and pick-up, greatly increasing the places for passengers to enter and exit the airport. IAH also opened the previously closed entry roadway lane before Thanksgiving, further reducing traffic snarl.

For those leaving their cars at the airport, a new cashless, automated system was built at HAS garages and ecoparks. New curbside agents were also hired, and Houston police helped direct traffic during the stressful and busy time.

“Our focus is always on providing a safe, stress-free experience,” said Kelly Woodward, chief operating officer for Houston Airports. “These upgrades allowed us to accommodate record passenger numbers while keeping traffic flowing. It’s a win for travelers and our city.”

IAH will continue to improve in 2025 as the new International Central Processor terminal comes fully online. As IAH becomes one of the main Gateways to Latin and South America, it will continue to serve the increasing number of flyers heading south of the border. Some time in 2025, 11 new lanes will open on the upper level, keeping traffic moving briskly.

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This story originally appeared on our sister site, CultureMap.com.