Health tech startup with Houston HQ raises $14M series A

Money moves

Optellum, which has its United States operations based in the TMC Innovation Institute, has raised fresh funding. Photo via Getty Images

A Oxford-based health tech startup that has its United States headquarters in Houston has announced the close of its series A round of funding.

Optellum, which has created a breakthrough AI platform to diagnose and treat early-stage lung cancer, has raised $14 million in a series A funding round. The round was led by United Kingdom-based Mercia, with additional investors California-based Intuitive Ventures and New York-based Black Opal Ventures. Existing investors, including St John's College in the University of Oxford, IQ Capital, and the family office of Sir Martin & Lady Audrey Wood, also participated in the round, per a news release.

"Lung cancer is an urgent public health crisis and Optellum's groundbreaking approach utilizing AI to accelerate early detection and intervention may fundamentally alter the healthcare community's approach to combating this disease," says Dr. Oliver Keown, managing director of Intuitive Ventures, in the release. "Optellum is uniquely positioned to align and provide considerable value to patients, providers, and payers alike. Intuitive Ventures is thrilled to provide our full arsenal of financial and strategic support to Optellum as we work towards a world of better outcomes for cancer patients."

The fresh funding will go toward scaling Optellum's operations and commercial launches in the United Kingdom and in the United States. Additionally, the company plans to expand its platform, including providing personalized therapy support using imaging data with molecular data, robotics, and liquid biopsies.

"With this strong support and commitment of highly specialized investors, we are positioned to accelerate commercial deployment in both the UK and the United States to expand our installed base," says Jason Pesterfield, CEO at Optellum, in the release. "Following years of research and clinical trials that have shown the impact of our software on the diagnosis of at-risk lung nodules, we're focused on expanding patient access to this crucial technology and identifying deadly lung cancer faster in more at-risk people. The funding will also boost our research and development with world-leading institutions and partners to progress further innovation."

Optellum's software provides support for physicians making decisions in early lung cancer diagnosis and treatment. The company was launched to provide better diagnostics and early-stage treatment to increase survival rates and improve health outcomes.

Last year, Optellum — whose U.S. headquarters is at Houston's TMC Innovation Institute — announced it would be included in J&J's Lung Cancer Initiative. The startup was a 2019 graduate of the Texas Medical Center's accelerator and its software platform, Virtual Nodule Clinic, received FDA clearance, CE-MDR in the EU, and UKCA in the UK.

"Optellum is the latest in a series of companies to channel research from the UK's world-leading universities into commercially viable products that can make a difference to the provision of medical care," says Mercia Investment Director Stephen Johnson in the release. "Having observed Optellum achieve great milestones over the years, we are now excited to become part of their success and apply our experience with scaling up software and deep-tech companies to help accelerate Optellum's impact on patient lives across the world."

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5 must-read innovation headlines: Pharma giant considers Houston hub + more

Trending news

Editor's note: With May coming to a close, it's time to look back at the biggest innovation headlines for the second half of the month. Major moves were made in May, with NuScale Power entering the market, Persona AI inking a deal with Under Armour, and a pharma giant considering Houston for its next manufacturing hub. Here are the most-read InnovationMap stories published May 15-29, 2026:

1. Pharma giant considers Houston for $1 billion manufacturing campus

Another pharmaceutical giant is considering Houston’s Generation Park for a manufacturing hub. According to a recent filing with the Texas Jobs, Energy, Technology and Innovation (JETI) program, Bristol Myers Squibb Co. is considering the northeast Houston management district for a new $1 billion multi-modal pharmaceutical manufacturing campus.

2. Modular nuclear reactor co. NuScale Power moves into Houston market

The nuclear energy renaissance continues in Texas with an announcement by NuScale Power. The Oregon-based provider of proprietary and innovative advanced small modular reactor (SMR) nuclear technology announced in April it would be opening office space in Houston’s CityCentre.

3. Persona AI teams with Under Armour to protect next-gen robots

Houston-based Persona AI has cemented a partnership with sportswear manufacturer Under Armour to provide materials to protect future robots operating in dangerous conditions. Through the partnership, Persona AI and Under Armour will launch a research initiative to explore whether advanced performance textiles can improve the durability and resilience of humanoid robots operating in harsh industrial environments.

4. Houston quantum energy chip startup emerges from stealth with $12M round

Houston-based Casimir has emerged from stealth with a $12 million seed round to commercialize its quantum energy chip. The round was led by Austin-based Scout Ventures. Lavrock Ventures, Cottonwood Technology, Capital Factory, American Deep Tech, and Tim Draper of Draper Associates also participated in the round. The oversubscribed round exceeded the company’s original $8 million target.

5. Global summit spotlights Houston's growing role in brain health, innovation

The Center for Houston’s Future and UTMB are bringing the Texas Brain Economy Summit back to Houston this summer to continue to position the region as a global leader in brain health. The summit, held June 9-10 at the Texas Medical Center's Helix Park, will bring together more than 500 executives, researchers, policymakers and innovators from around the world to discuss the global brain economy.

Houston startup raises $6M to scale home-based healthcare platform

fresh funding

As healthcare systems race to expand care beyond hospitals and into the home, investors are placing bigger bets on the infrastructure needed to make that shift possible.

This month, Rosarium Health announced it has raised $6 million in seed funding led by Kalos Ventures, with participation from ResilienceVC, Rock Health Capital, Symphonic Capital, Black Tech Nations Ventures and others.

The investment will help the Houston-based startup continue to build its platform, which features a national network of 800-plus clinicians and 3,000-plus contractors to coordinate home accessibility upgrades and modifications for seniors and people living with disabilities.

For founder and CEO Cameron Carter, the company’s mission grew out of firsthand caregiving experiences.

“From my own personal caregiving experiences, I realized that the benefits exist on paper, but not in reality,” Carter said in a news release. “Families are being left to figure out the paperwork and installations all on their own, which shouldn’t be how this works.”

While Medicare Advantage and Medicaid plans have expanded coverage for home-based services and accessibility modifications, the logistics behind delivering those services often remain fragmented.

Rosarium’s platform coordinates the entire process, from clinical assessments and referrals to contractor management, documentation, reimbursement and installation.

“A clinician can document that a home isn’t safe and a plan can approve a benefit, but there’s no one that’s responsible for making sure the work actually gets done,” Carter says. “We built the missing piece.”

The company was founded in 2021 as Rose Health and was a 2023 participant in the Texas Medical Center’s Accelerator for HealthTech program. It has scaled quickly, building a network of more than 800 clinicians and 3,000 contractors across 34 states.

Rosarium is currently in-network for 1.2 million Medicare and Medicaid lives, with projected coverage expected to reach nearly 4 million by the end of the year, according to the release.

“We’re excited to back Cameron because he and the team at Rosarium are building the infrastructure healthcare needs right now to make the home a safe and comfortable place of care,” Kate Ballinger, investor at Kalos Ventures, added in the release.

As part of the recent investment, Ballinger will join Rosarium’s board of directors.

With eyes on the future, Rosarium plans to grow its partnerships with Medicaid and Medicare Advantage plans, including CalViva and Community Health Plan of Imperial Valley, strengthening its presence in California while expanding access to underserved communities.

Additionally, Carter predicts that home-based healthcare will be part of a broader transformation happening across the industry.

“There’s a growing recognition that health outcomes are shaped by what happens in the home,” he said in the release. “The future of healthcare isn’t just treating people after something goes wrong. It’s creating environments that help prevent those problems in the first place.”

Houston business mogul Tilman Fertitta acquires Caesars in $17.6B deal

Money Moves

Houston billionaire Tilman Fertitta may currently be serving as America’s ambassador to Italy, but his company is as busy as ever. Fresh off its move to revive the Houston Comets WNBA franchise, his company, Fertitta Entertainment, has announced a $17.6 billion deal to acquire Caesars Entertainment, Inc.

Speculation about the deal has been circulating since at least March, according to various media reports. The deal combines Fertitta’s well-known Golden Nugget casino brand with all of the properties in the Caesars’ portfolio, including Las Vegas hotels Caesars Palace, Harrah's, Paris Las Vegas, Planet Hollywood, Horseshoe, The LINQ Hotel, Flamingo, and The Cromwell.

Overall, the combined company will include 60 domestic casino resorts and gaming facilities; online gaming including sports betting, iCasino, and Caesar’s online poker platform; retail sports betting at over 200 third-party locations through the William Hill brand; and over 550 Fertitta Entertainment outlets, including more than 450 Landry's full-service restaurants across America. The companies will combine their loyalty programs, Caesars Rewards, Golden Nugget's 24 Karat Select Club, and Landry's Select Club.

The terms will see Caesars’ shareholders receive $31 per share. Fertitta Entertainment will also acquire approximately $11.9 billion of Caesars' outstanding debt.

The transaction will be financed through a combination of equity contributed by Fertitta Entertainment, assumed Caesars' debt, and new committed debt financing arranged by a group consisting of 10 banks. It is subject to approval by Caesars’ shareholders and government regulators.

Fertitta Entertainment is the Houston-based company behind a diverse array of hospitality businesses, including The Golden Nugget, The Post Oak Hotel, River Oaks District, the Kemah Boardwalk, and Houston’s Downtown Aquarium.

It also operates a number of prominent restaurant brands, including Mastro's Restaurants, Del Frisco's Double Eagle Steakhouse, Morton's The Steakhouse, The Palm, McCormick & Schmick's, Landry's Seafood House, The Oceanaire Seafood Room, and Saltgrass Steak House.

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This article first appeared on CultureMap.com.

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