Here are three of the latest updates on new hires and promotions from these Houston organizations. Photos courtesy

It's been a busy year so far for Houston organizations — three of which have made new appointments to their leadership.

In this round up of movers and shakers in Houston innovation, a venture capital firm names its newest principal, an astronaut gets a leadership role here at ground control, and a VR studio snags a leader to steer its growth.

Joe Acaba, chief of NASA's Astronaut Office at Johnson Space Center

Joe Acaba was promoted to a new role and will be responsible for crew assignments for future spaceflight missions. Photo via NASA

NASA tapped Joe Acaba as its chief of the Astronaut Office based in Johnson Space Center in Houston. He's served on multiple spaceflights and is a former U.S. Marine and former educator. According to NASA, he's the first person of Hispanic heritage selected to lead the office.

Acaba replaces Drew Feustel, who spent two years as deputy chief and has been acting chief of the office since NASA astronaut Reid Wiseman left the post late last year.

"Joe is an experienced space flyer and a proven leader, and he will undoubtedly inspire the next generation of NASA astronauts," says NASA Administrator Bill Nelson in a news release. " As we build on the International Space Station’s unparalleled success in low-Earth orbit with our eyes on the Moon and then Mars, Joe will play an integral role in ensuring our NASA astronauts are prepared for the challenges ahead."

Acaba, who spent a total of 306 days in space, has already supported the astronaut office in a few of roles, including director of operations in Russia and chief of the Vehicle Integration Test Office. In this new role, he will be oversee astronaut resources and operations and help develop astronaut flight crew operation concepts. Additionally, Acaba will make crew assignments for future spaceflight missions, including astronauts assigned to fly on Artemis missions.

“Our Johnson Space Center team congratulates Joe Acaba on his selection to chief of the Astronaut Office. We wish him well as he takes on this new and exciting leadership role,” says NASA Johnson Space Center Director Vanessa Wyche.

Samantha Lewis, partner at Mercury Fund

Samantha Lewis was promoted to partner at Mercury Fund. Photo courtesy of Mercury Fund

Samantha Lewis was promoted to partner from principal at Houston-based venture capital firm Mercury, per her LinkedIn. She previously was the investment director of investor network GOOSE Capital before joining the Mercury team just over two years ago.

Last year, Lewis — who also served on the board of two Houston-founded startups, Syzygy and Topl — was named a member of the Class 27 of the Kauffman Fellows Program, a group of global innovation investors.

Lewis is focused on what she calls the "power theme" at Mercury, which includes fintech, blockchain, web3, and more. She told InnovationMap on a recent episode of the Houston Innovators Podcast that these industries have been hit in particular within market uncertainty.

Bob Kleinhample, senior vice president of growth at HTX Labs

Bob Kleinhample joins HTX Labs at a time of strategic growth. Photo courtesy of HTX Labs

Virtual reality studio HTX Labs has named Bob Kleinhample as the company’s senior vice president of growth. He has more than 15 years leading business efforts in the tech space. A 20-year Army veteran, Kleinhample will oversee all aspects of HTX Labs' growth — including business development, product strategy, and marketing.

“Bob brings the right balance of market knowledge and product strategy, in combination with the commitment to bring immersive training and simulation to the warfighter, to really drive our EMPACT offering into the market,” says Scott Schneider, CEO and co-founder of HTX Labs. "We’re very excited to be adding this incredibly important role to our organization and having Bob lead these efforts as we expand the usage and adoption of EMPACT across the Department of Defense."

The appointment comes after the startup raised $3.2 million in its first outside capital round.

“Last year we secured funding from Cypress Growth Capital for the sole purpose of accelerating the growth of our EMPACT platform and our customer base, and we immediately began a search for the right person to lead these growth efforts," Schneider continues. "After performing an extensive search, we are fortunate to have connected with Bob Kleinhample who is coming on board to lead our company’s growth efforts“.

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7 innovative startups that are leading the energy transition in Houston

meet the finalists

Houston has long been touted as the energy capital of the world, and it's now it's also a leading player in the energy transition — home to numerous startups and innovators working toward a cleaner future.

As part of the 2025 Houston Innovation Awards, our Energy Transition Business category honors innovative startups that are providing solution within renewables, climatetech, clean energy, alternative materials, circular economy, and more.

Seven energy transition companies have been named finalists for the 2025 award. They range from a spinoff stimulating subsurface hydrogen from end-of-life oil fields to a company converting prickly pear cactus biogas into energy.

Read more about these climatetech businesses, their founders, and their green initiatives below. Then join us at the Houston Innovation Awards on Nov. 13 at Greentown Labs, when the winner will be unveiled at our live awards ceremony.

Tickets are now on sale for this exclusive event celebrating all things Houston Innovation.

Anning Corporation

Clean energy company Anning Corporation is working to develop geologic hydrogen, a natural carbon-free fuel, using its proprietary stimulation approaches and advanced exploration modeling. The company said that geologic hydrogen has the potential to be the lowest-cost source of reliable baseload electricity in the U.S.

The company was founded by CEO Sophie Broun in 2024 and is a member of Greentown Labs. Last month, it also announced that it was chosen to participate in Breakthrough Energy’s prestigious Fellows Program. Anning raised a pre-seed round this year and is currently raising a $6 million seed round.

Capwell Services

Houston-based methane capture company Capwell Services works to eliminate vented oil and gas emissions economically for operators. According to the company, methane emissions are vented from most oil and gas facilities due to safety protocols, and operators are not able to capture the gas cost-effectively, leading operators to emit more than 14 million metric tons of methane per year in the U.S. and Canada. Founded in 2022, Capwell specializes in low and intermittent flow vents for methane capture.

The company began as a University of Pennsylvania senior design project led by current CEO Andrew Lane. It has since participated in programs with Greentown Labs and Rice Clean Energy Accelerator. The company moved to Houston in 2023 and raised a pre-seed round. It has also received federal funding from the DOE. Capwell is currently piloting its commercial unit with oil and gas operators.

Deep Anchor Solutions

Offshore energy consulting and design company Deep Anchor Solutions aims to help expedite the adoption of floating offshore energy infrastructure with its deeply embedded ring anchor (DERA) technology. According to the company, its patented DERA system can be installed quietly without heavy-lift vessels, reducing anchor-related costs by up to 75 percent and lifecycle CO2 emissions by up to 80 percent.

The company was founded in 2023 by current CEO Junho Lee and CTO Charles Aubeny. Lee earned his Ph.D. in geotechnical engineering from Texas A&M University, where Aubeny is a professor of civil and environmental engineering. The company has participated in numerous accelerators and incubators, including Greentown Labs, MassChallenge, EnergyTech Nexus LiftOff, and others. Lee is an Activate 2025 fellow.

Eclipse Energy

Previously known as Gold H2, Eclipse Energy converts end-of-life oil fields into low-cost, sustainable hydrogen sources. It completed its first field trial this summer, which demonstrated subsurface bio-stimulated hydrogen production. According to the company, its technology could yield up to 250 billion kilograms of low-carbon hydrogen, which is estimated to provide enough clean power to Los Angeles for over 50 years and avoid roughly 1 billion metric tons of CO2 equivalent.

Eclipse is a spinoff of Houston biotech company Cemvita. It was founded in 2022 by Moji Karimi (CEO and chairman of Cemvita), Prabhdeep Sekhon (CEO of Eclipse), Tara Karimi, and Rayyan Islam. The company closed an $8 million series A this year and has plans to raise another round in 2026.

Loop Bioproducts

Agricultural chemical manufacturing company Loop Bioproducts leverages the physiology of prickly pear cactus grown in Texas to produce bioenergy, food, and remediate industrial wastewater streams. The company uses its remote sensing technology, proprietary image-based machine learning model, and R&D innovation to capture raw biogas from the cactuses and is focused on scaling cactuses as an industrial crop on land.

Rhiannon Parker founded Loop Bioproducts in 2023.

Mars Materials

Clean chemical manufacturing business Mars Materials is working to convert captured carbon into resources, such as carbon fiber and wastewater treatment chemicals. The company develops and produces its drop-in chemical products in Houston and uses an in-licensed process for the National Renewable Energy Lab to produce acrylonitrile, which is used to produce plastics, synthetic fibers, and rubbers. The company reports that it plans to open its first commercial plant in the next 18 months.

Founded in 2019 by CEO Aaron Fitzgerald, CTO Kristian Gubsch, and lead engineer Trey Sheridan, the company has raised just under $1 million in capital and is backed by Bill Gates’ Breakthrough Energy, Shell, Black & Veatch, and other organizations.

Solidec

Chemical manufacturing company Solidec has developed autonomous generators that extract molecules from water and air and converts them into pure chemicals and fuels that are free of carbon emissions onsite, eliminating the need for transport, storage, and permitting. The company was founded around innovations developed by Rice University associate professor Haotian Wang.

The company was selected for the Chevron Technology Ventures’ catalyst program, Greentown Labs, NSF I-Corps and was part of the first cohort of the Activate Houston program. It won first place at the 2024 startup pitch competition at CERAWeek. Solidec was founded in 2023 by Wang, who serves as chief scientist, CEO Ryan DuChanois, and CTO Yang Xia. It closed a $2.5 million seed round earlier this year.

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Rice University team develops eco-friendly method to destroy 'forever chemicals' in water

clean water research

Rice University researchers have teamed up with South Korean scientists to develop the first eco-friendly technology that captures and destroys toxic “forever chemicals,” or PFAS, in water.

PFAS have been linked to immune system disruption, certain cancers, liver damage and reproductive disorders. They can be found in water, soil and air, as well as in products like Teflon pans, waterproof clothing and food packaging. They do not degrade easily and are difficult to remove.

Thus far, PFAS cleanup methods have relied on adsorption, in which molecules cling to materials like activated carbon or ion-exchange resins. But these methods tend to have limited capacity, low efficiency, slow performance and can create additional waste.

The Rice-led study, published in the journal Advanced Materials, centered on a layered double hydroxide (LDH) material made from copper and aluminum that could rapidly capture PFAS and be used to destroy the chemicals.

The study was led by Rice professor Youngkun Chung, a postdoctoral fellow under the mentorship of Michael S. Wong. It was conducted in collaboration with Seoktae Kang, professor at the Korea Advanced Institute of Science and Technology, and Keon-Ham Kim, professor at Pukyung National University, who first discovered the LDH material.

The team evaluated the LDH material in river water, tap water and wastewater. And, according to Rice, that material’s unique copper-aluminum layers and charge imbalances created an ideal binding environment to capture PFAS molecules.

“To my astonishment, this LDH compound captured PFAS more than 1,000 times better than other materials,” Chung, lead author of the study and now a fellow at Rice’s WaTER (Water Technologies, Entrepreneurship and Research) Institute and Sustainability Institute, said in a news release. “It also worked incredibly fast, removing large amounts of PFAS within minutes, about 100 times faster than commercial carbon filters.”

Next, Chung, along with Rice professors Pedro Alvarez and James Tour, worked to develop an eco-friendly, sustainable method of thermally decomposing the PFAS captured on the LDH material. They heated saturated material with calcium carbonate, which eliminated more than half of the trapped PFAS without releasing toxic by-products.

The team believes the study’s results could potentially have large-scale applications in industrial cleanups and municipal water treatments.

“We are excited by the potential of this one-of-a-kind LDH-based technology to transform how PFAS-contaminated water sources are treated in the near future,” Wong added in the news release. “It’s the result of an extraordinary international collaboration and the creativity of young researchers.”

Axiom Space announces new CEO amid strategic leadership change

new leader

Six months after promoting Tejpaul Bhatia from chief revenue officer to CEO, commercial space infrastructure and human spaceflight services provider Axiom Space has replaced him.

On Oct. 15, Houston-based Axiom announced Jonathan Cirtain has succeeded Bhatia as CEO. Bhatia joined Axiom in 2021. Cirtain remains the company’s president, a role he assumed in June, according to his LinkedIn profile.

In a news release, Axiom said Cirtain’s appointment as CEO is a “strategic leadership change” aimed at advancing the company’s development of space infrastructure.

Axiom hired Cirtain as president in June, according to his LinkedIn profile. The company didn’t publicly announce that move.

Kam Ghaffarian, co-founder and executive chairman of Axiom, said Cirtain’s “proven track record of leadership and commitment to excellence align perfectly with our mission of building era-defining space infrastructure that will drive exploration and fuel the global space economy.”

Aside from praising Cirtain, Ghaffarian expressed his “sincere gratitude” for Bhatia’s work at Axiom, including his leadership as CEO during “a significant transition period.”

Bhatia was promoted to CEO in April after helping Axiom gain more than $1 billion in contracts, Space News reported. He succeeded Ghaffarian as CEO. Axiom didn’t indicate whether Bhatia quit or was terminated.

Cirtain, an astrophysicist, was a senior executive at BWX Technologies, a supplier of nuclear components and fuel, for eight years before joining Axiom. Earlier, Cirtain spent nearly nine years in various roles at NASA’s Marshall Space Flight Center in Huntsville, Alabama. He previously co-founded a machine learning company specializing in Earth observation.

“Axiom Space is pioneering the commercialization of low-Earth orbit infrastructure while accelerating advancements in human spaceflight technologies,” Cirtain said. “I look forward to continuing our team’s important work of driving innovation to support expanded access to space and off-planet capabilities that will underpin the future of space exploration.”

Among other projects, Axiom is developing the world’s first commercial space station, creating next-generation spacesuits for astronauts and sending astronauts on low-Earth orbit missions.