Ranking It

Co-founder of Houston hypersonic engine co. lands on Inc. 500 list

Sassie Duggleby is on Inc.'s Female Founders 500 list for 2025. Courtesy photo

Five Houston female founders have been recognized by Inc. Magazine for their innovation, including Sassie Duggleby, the CEO and co-founder of groundbreaking space tech and engine company Venus Aerospace.

The women were named to Inc.'s Female Founders 500 list, which features female entrepreneurs based in the U.S. The group attracted approximately $9 billion in 2024 revenue and $10.6 billion in funding, according to Inc.

“Female founders know what struggle is, but they’re also experts of improvisation, adaptability, and creativity. The women featured on this year’s list exemplify these qualities," Diana Ransom, Inc. executive editor said in a release. "Through times of uncertainty, their unwavering dedication and steadfast leadership are not only inspiring but vital to driving progress.”

Venus Aerospace is the Houston-based company that is developing reusable hypersonic technology that it hopes "will revolutionize and redefine the boundaries of aviation, defense, and beyond." The company won the in the Deep Tech Business category in the 2024 Houston Innovation Awards. Duggleby also serves on the Texas Space Commission board of directors.

Duggleby is joined by four other Houston founders:

  • Stephanie Murphy, CEO and executive chairman of Aegis Aerospace, which provides space services, spaceflight product development, and engineering services. Murphy also serves on the Texas Aerospace Research and Space Economy Consortium Executive Committee.
  • Emily Cisek, founder of The Postage, now known as Paige, a comprehensive life planning and succession software platform for families and small businesses. The company won the Female-Owned Business category in the 2023 Houston Innovation Awards.
  • Margo Jordan, founder of adolescent mental health startup Enrichly, which uses AI-driven self-esteem development and behavioral insights to boost student performance.
  • Nina Magon, founder of Nina Magon Studio / Nina Magon Consumer Products, a residential and commercial interior design company.
"While I don't know many of the ladies on this list, I do know they're some of the most tenacious role models in entrepreneurship. I'm beyond honored to be included among them," Duggleby said in a LinkedIn post.
Twenty-eight Texas female founders made this list, including Kendra Scott and Allison Ellsworth, co-founder of Poppi, and many others.

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A version of this story first appeared on our sister site, InnovationMap.com.

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A View From HETI

James Shee, Naihao Chiang and Tony Geng have received the Department of Energy’s Early Career Award. Photos courtesy Rice and UH

Researchers at Rice University, the University of Houston and other Texas universities have been awarded the Department of Energy’s Early Career Award for their work in quantum science, AI and more.

Each professor who received the honor will be awarded $875,000 over five years to continue their work.

The Houston-area recipients include:

  • James Shee, assistant professor of chemistry at Rice University
  • Tony Geng, assistant professor of electrical and computer engineering at Rice
  • Naihao Chiang, assistant professor in the department of chemistry at the University of Houston

For Shee, the award will support his work to advance a “first principles platform to simulate the quantum dynamics of chemical systems of relevance to sustainable energy consumption and generation,” according to a news release from Rice.

“Support from the Department of Energy will enable my group to pursue the ambitious quantum chemistry development required to simulate the dynamics of transition metal-based molecular computing paradigms and multi-excitonic processes in a purely ab initio manner,” Shee said in the release.

Geng is developing next-generation AI for real-time digital twins for scientific systems. Geng and his team will make microchips that function as trainable electronic dynamical systems computing through natural, continuous evolution rather than digital instructions, according to the university.

Chiang’s work at UH addresses the DOE’s Quantum Information Science priority. Chiang leads a team that develops and applies “plasmonic-enhanced near-field optical techniques” to investigate fundamental light-matter interactions at the quantum limit before applying them to emerging technologies. In addition, the team will use AI to help with data acquisition and will utilize STEM workforce development.

Dr. Joshua Burby, an assistant professor in the Department of Physics at the University of Texas at Austin, and Junyeong Ahn, who is part of the University’s Texas Quantum Institute, also received early career awards for their work in superconducting and fusion technologies. See the full list of recipients from around the country here.

“The energy and creativity of early-career scientists is crucial for propelling scientific discovery forward. The Department of Energy is committed to nurturing this talent through programs like the Early Career Research Program,” Darío Gil, DOE under secretary for science, added in a release. “These awards provide essential resources and opportunities for collaboration, enabling these researchers to explore novel concepts and accelerate the development of solutions for our nation’s energy and scientific landscape.”

The DOE has also doled out funding to Houston researchers and companies in recent months through its Genesis Mission and geothermal initiatives.

Researchers from Rice, UH and Halliburton were named in July among the nearly 300 projects selected under the Trump administration's Genesis Mission, which aims to address some of the largest science and technology challenges in the country

In September, three Houston companies also received more than $45 million in funding from the DOE's Next-Generation Geothermal Field Tests and Geothermal Resource Characterization and Confirmation initiative to advance geothermal technologies and field tests. The projects were among 21 selected from around the country to receive a total of $99 million. Read more here.

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