Houston venture capitalist says it's time for more women in VC

HOUSTON INNOVATORS PODCAST EPISODE 73

Samantha Lewis, principal at Mercury Fund, joins this week's episode of the Houston Innovators Podcast. Photo courtesy of Mercury Fund

In all the turmoil of 2020, Samantha Lewis had at least one silver lining. The former director of Goose Capital transitioned into her new position as principal at Mercury Fund.

However fortunate she feels to have her new position, she shares on the Houston Innovators Podcast this week that there's not nearly enough of women like her in venture capital.

"The bottom line is there has to be more women with check-writing abilities," Lewis says on the show. "And when there is more women with check-writing abilities, more women will get funded."

Joining the podcast at the start of Women's History Month, Lewis says that the pandemic disproportionately affected women's careers across the board — but when it comes to VC, the solution is growing the female representation at firms.

"It is up to the people in VC hiring or the institutional investors who are giving money to funds to make sure there's a woman on the investment team," she says — adding that just one isn't enough.

In her role at Mercury, Lewis is helping build up the fund's processes — something she specialized in at Goose. She's also focused on building up the portfolio around a specific theme.

"One of the things specifically that Mercury brought me over to focus on from an investment perspective is something we're calling our 'power theme,'" Lewis says. "Think about it as giving people the power to make decisions that are authentic to their values around sustainability and impact."

There have been significant changes in consumer values driven by millennials, and businesses are prioritizing sustainability and transparency in order to keep up. Lewis discusses how Houston-based Topl, which is one of Mercury's portfolio companies, has a major role to play in this space.

Another key area of interest for Lewis is fintech.

"The other piece of the theme is thinking about the democratization of financial services," Lewis says. "Legacy financial institutions have ignored large groups of our population here in America and broader for a very long time. Technology is actually breaking down a lot of those barriers, so there are all these groups that have traditionally been ignored that now technology can reach to help them build wealth."

Lewis discusses more about how Mercury Fund is at an inflection point and how the Houston innovation ecosystem is developing with intention on the episode. Listen to the full interview below — or wherever you stream your podcasts — and subscribe for weekly episodes.



Kim Raath, CEO of Topl, and Leslie Goldman, general partner at The Artemis Fund, identified three challenges that female entrepreneurs face while going through the fundraising process. Photos courtesy

2 female Houston entrepreneurs discuss challenges women face during fundraising

women in VC

It's estimated that women make up only around 10 percent of decision makers in venture capital firms in the United States, and women-led companies only receive of a fraction of venture capital invested. And, stats aside, female entrepreneurs continue to face obstacles in the process that their male counterparts don't always share.

Kim Raath — co-founder and CEO of Topl, a Houston-based blockchain startup — and Leslie Goldman — general partner and co-founder of The Artemis Fund — discussed some of these obstacles at a virtual fireside chat for Dallas Startup Week. Here are the three challenges women face during fundraising, as Raath and Goldman discussed.

Balancing being realist with optimism

It's almost a chiche at this point — yet it still holds a great deal of truth — that women tend to be more honest than men when it comes to applying for jobs, for instance. Goldman says she's seen it plenty of times, especially when she was involved in corporate recruiting at one point in her career. Raath and Goldman agreed, women want to check off all the boxes on a requirements list.

"Men would apply if they could check just one box," Goldman says. "Women tend to be more realistic."

This trait, while noble, can be a disadvantage as it translates to the fundraising process.

Navigating unconscious bias

Raath says she's no stranger to discrimination for being a woman. In the chat, she tells a story of when she was a girl and the woman's track event she was supposed to run was canceled. She had her heart set on getting to nationals, so her father lobbied for her to get a chance to run in the boy's race. Eventually, they let her and she came in second place.

She continued to observe moments like this throughout her schooling, especially when she started studying male-dominated studies like economics and statistics — Raath now has a master's and a Ph.D from Rice University. When recently raising money for Topl's latest round, her observational and statistical mind picked up on something. Raath explains that there are two types of questions a VC might ask you — preventative vs. promotional. An example she gives for each is:

  • Preventative: "How many daily users do you have?"
  • Promotional: "How do you look to acquire users?"

"About three months in, I started realizing that I'm constantly getting these preventative questions. So, I did a little research," Raath says, explaining that she found that women are more likely to get these preventative questions. "Now, every preventative question I got, I started answering with a promotional answer."

It's the same unconscious bias as how a young male entrepreneur might be considered, "young and promising," while a woman with the same resume would be considered, "young and inexperienced."

Creating a supportive network

Raath and Goldman discussed the importance of women surrounding themselves with supportive networks made up of both women and men. On one hand, it's key to have fellow female entrepreneurs or investors who have been in your shoes before or whom you can give advice to — Raath says she created "woke woman wine nights" with her interns this summer.

On the other hand, having men in your network who can act as advocates — like Raath's father was as well as her male co-founders whom she says are great supporters — is crucial too.

"I have been surrounded by some amazing male counterparts," Raath says. "That's the other side of this is finding male champions."

Sandy Guitar — along with other Houston female venture capitalists — are gathering virtually to promote networking and friendship amid the pandemic. Photo courtesy of Sandy Guitar

Houstonian fosters collaboration and mentorship for women in venture capital

HOUSTON INNOVATORS PODCAST EPISODE 46

When Sandy Guitar saw that Austin had a group of women in venture capital group that promoted collaboration and networking, she knew Houston had to have one too.

Guitar, who is the managing director of the HX Venture Fund, connected with the Austin group, picked their brains and asked for advice on starting a local iteration, and recruited a few fellow female VC experts in town — and the rest is history.

"There's a part of us as women that understands necessarily that work and life combine," Guitar says on this week's episode of the Houston Innovators Podcast. "Our lives as women don't allow us to segment our lives. The truth is those parts of our lives come together. The more we can do that, the more we can build networks that help us achieve everything we want both professionally and personally."

Now, over a year later, the Women Investing in VC in Houston group has grown to over 30 members — so much that their virtual visits are broken into smaller groups. The group boasts diversity and has representatives across types of funds. To join, women must simply live in Houston and be a venture capital investor. Other than that, the group is unstructured and casual, which fosters an environment where members are allowed to ask a stupid question or speak up on something personal, as Guitar says.

"When you have no dues and very little formality, no structure, no pressure to attend — it's in that setting that you actually build trust. Organically, the friendships come together," she says. "That's what it's really about."

While the group had pre-pandemic beginnings, the model of mentorship and networking is more relevant now than ever. Men and women alike, Guitar says, are not able to silo work and life as we work from home and practice social distancing.

"COVID has made us vulnerable in an entirely new set of ways," she says. "We use our support groups — whatever they are — to help us."

Guitar discusses the group and how what the venture capital industry needs to do to evolve into a more welcoming space for women in the episode of the podcast. You can listen to the full interview below — or wherever you stream your podcasts — and subscribe for weekly episodes.


The Women Investing in VC in Houston group has pivoted to virtual events since the start of COVID-19. Photo courtesy of Sandy Guitar

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How Houston innovators played a role in the historic Artemis II splashdown

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Research from Rice University played a critical role in the safe return of U.S. astronauts aboard NASA’s Artemis II mission this month.

Rice mechanical engineer Tayfun E. Tezduyar and longtime collaborator Kenji Takizawa developed a key computational parachute fluid-structure interaction (FSI) analysis system that proved vital in NASA’s Orion capsule’s descent into the Pacific Ocean. The FSI system, originally developed in 2013 alongside NASA Johnson Space Center, was critical in Orion’s three-parachute design, which slowed the capsule as it returned to Earth, according to Rice.

The model helped ensure that the parachute design was large enough to slow the capsule for a safe landing while also being stable enough to prevent the capsule from oscillating as it descended.

“You cannot separate the aerodynamics from the structural dynamics,” Tezduyar said in a news release. “They influence each other continuously and even more so for large spacecraft parachutes, so the analysis must capture that interaction in a robustly coupled way.”

The end result was a final parachute system, refined through NASA drop tests and Rice’s computational FSI analysis, that eliminated fluctuations and produced a stable descent profile.

Apart from the dynamic challenges in design, modeling Orion’s parachutes also required solving complex equations that considered airflow and fabric deformation and accounted for features like ringsail canopy construction and aerodynamic interactions among multiple parachutes in a cluster.

“Essentially, my entire group was dedicated to that work, because I considered it a national priority,” Tezduyar added in the release. “Kenji and I were personally involved in every computer simulation. Some of the best graduate students and research associates I met in my career worked on the project, creating unique, first-of-its-kind parachute computer simulations, one after the other.”

Current Intuitive Machines engineer Mario Romero also worked on Orion during his time at NASA. From 2018 to 2021, Romero was a member of the Orion Crew Capsule Recovery Team, which focused on creating likely scenarios that crewmembers could encounter in Orion.

The team trained in NASA’s 6.2-million-gallon pool, using wave machines to replicate a range of sea conditions. They also simulated worst-case scenarios by cutting the lights, blasting high-powered fans and tipping a mock capsule to mimic distress situations. In some drills, mock crew members were treated as “injured,” requiring the team to practice safe, controlled egress procedures.

“It’s hard to find the appropriate descriptors that can fully encapsulate the feeling of getting to witness all the work we, and everyone else, did being put into action,” Romero tells InnovationMap. “I loved seeing the reactions of everyone, but especially of the Houston communities—that brought me a real sense of gratitude and joy.”

Intuitive Machines was also selected to support the Artemis II mission using its Space Data Network and ground station infrastructure. The company monitored radio signals sent from the Orion spacecraft and used Doppler measurements to help determine the spacecraft's precise position and speed.

Tim Crain, Chief Technology Officer at Intuitive Machines, wrote about the experience last week.

"I specialized in orbital mechanics and deep space navigation in graduate school,” Crain shared. “But seeing the theory behind tracking spacecraft come to life as they thread through planetary gravity fields on ultra-precise trajectories still seems like magic."

Rice Alliance names first head of platform & more innovation headlines

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Editor's note: The top April innovation headlines to know include Rice Alliance's newly minted head of platform and FDA approval for a local medtech startup. Below are the five most-read InnovationMap stories from April 1-15, 2026:

1. Rice Alliance names Houston healthtech exec as first head of platform

The Rice Alliance for Technology and Entrepreneurship has named its first head of platform. Houston entrepreneur Laura Neder stepped into the newly created role last month, according to an email from Rice Alliance. Neder will focus on building and growing Houston’s Venture Advantage Platform. The emerging platform, which is being promoted by Rice Alliance and the Ion, aims to connect founders with the "people, capital and expertise they need to scale." Continue reading.

2. Houston medtech startup clears FDA approval for new surgical tool

Prana Surgical has developed a minimally invasive, image-guided, single-use tissue extraction tool. Photo via LinkedIn

Houston-based Prana Surgical will soon bring a new electrosurgical tool to operating rooms around the country. The Prana System officially cleared U.S. Food and Drug Administration (FDA) approval earlier this month. Prana Surgical began as Prana Thoracic in 2022. Back then, the company primarily focused on developing screening tools for lung cancer diagnosis. It raised $6 million in series A funding rounds in 2023 and 2024 before transitioning to broader surgical needs in 2025. Continue reading.

3. Houston leads U.S. in population growth for 2025, Census says

The 10-county Houston metro added 126,720 residents from July 1, 2024, to July 1, 2025. Photo via Getty Images

Imagine that the Houston metro area swallowed a city the size of Pearland in just one year. That’s essentially what happened from 2024 to 2025, with the Houston metro ranking first in the U.S. for population growth based on the number of people. New estimates from the U.S. Census Bureau show the 10-county Houston metro added 126,720 residents from July 1, 2024, to July 1, 2025. That’s just shy of Pearland’s roughly 133,000-resident tally. Continue reading.

4. 8+ can't-miss Houston business and innovation events in April


From the Rice Business Plan Competition to the Veterans Business Battle, here's what not to miss in April and how to register. Photo courtesy the Ion

Houston's weeklong innovation festival kicked off April, followed by Rice University's globally recognized pitch competition returning for its 26th year. Plus, find coworking pop-ups, industry meetups, pitch battles and even a crawfish boil on the calendar. Continue reading.

5. Houston unicorn closes $421M to fuel first phase of flagship energy project

Tim Latimer, CEO and co-founder of Fervo Energy. Photo courtesy of Fervo Energy

Houston geothermal unicorn Fervo Energy has closed $421 million in non-recourse debt financing for the first phase of its flagship Cape Station project in Beaver County, Utah. Fervo believes Cape Station can meet the needs of surging power demand from data centers, domestic manufacturing and an energy market aiming to use clean and reliable power. According to the company, Cape Station will begin delivering its first power to the grid this year and is expected to reach approximately 100 megwatts of operating capacity by early 2027. Fervo added that it plans to scale to 500 megawatts. Continue reading.

UH breakthrough moves superconductivity closer to real-world use

Energy Breakthrough

University of Houston researchers have set a new benchmark in the field of superconductivity.

Researchers from the UH physics department and the Texas Center for Superconductivity (TcSUH) have broken the transition temperature record for superconductivity at ambient pressure. The accomplishment could lead to more efficient ways to generate, transmit and store energy, which researchers believe could improve power grids, medical technologies and energy systems by enabling electricity to flow without resistance, according to a release from UH.

To break the record, UH researchers achieved a transition temperature 151 Kelvin, which is the highest ever recorded at ambient pressure since the discovery of superconductivity in 1911.

The transition temperature represents the point just before a material becomes superconducting, where electricity can flow through it without resistance. Scientists have been working for decades to push transition temperature closer to room temperature, which would make superconducting technologies more practical and affordable.

Currently, most superconductors must be cooled to extremely low temperatures, making them more expensive and difficult to operate.

UH physicists Ching-Wu Chu and Liangzi Deng published the research in the Proceedings of the National Academy of Sciences earlier this month. It was funded by Intellectual Ventures and the state of Texas via TcSUH and other foundations. Chu, founding director and chief scientist at TcSUH, previously made the breakthrough discovery that the material YBCO reaches superconductivity at minus 93 K in 1987. This helped begin a global competition to develop high-temperature superconductors.

“Transmitting electricity in the grid loses about 8% of the electricity,” Chu, who’s also a professor of physics at UH and the paper’s senior author, said in a news release. “If we conserve that energy, that’s billions of dollars of savings and it also saves us lots of effort and reduces environmental impacts.”

Chu and his team used a technique known as pressure quenching, which has been adapted from techniques used to create diamonds. With pressure quenching, researchers first apply intense pressure to the material to enhance its superconducting properties and raise its transition temperature.

Next, researchers are targeting ambient-pressure, room-temperature superconductivity of around 300 K. In a companion PNAS paper, Chu and Deng point to pressure quenching as a promising approach to help bridge the gap between current results and that goal.

“Room-temperature superconductivity has been seen as a ‘holy grail’ by scientists for over a century,” Rohit Prasankumar, director of superconductivity research at Intellectual Ventures, said in the release. “The UH team’s result shows that this goal is closer than ever before. However, the distance between the new record set in this study and room temperature is still about 140 C. Closing this gap will require concerted, intentional efforts by the broader scientific community, including materials scientists, chemists, and engineers, as well as physicists.”

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This article originally appeared on EnergyCapitalHTX.com.

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