On June 9, 2026 GT Medical Technologies, Inc., a medical device company dedicated to improving the lives of patients with brain tumors, reported the closing of an oversubscribed $100 millon Series E equity financing. The financing was led by new investor Viking Global Investors with participation from key existing investors, including MVM Partners, Gilde Healthcare, Evidity Health Capital, Medtech Venture Partners and FemHealth Ventures.
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"This financing is validation of GammaTile’s potential to be a standard of care treatment for operable brain tumors and will accelerate our ability to bring this important therapy to even more patients," said Per Langoe, Chief Executive Officer at GT Medical Technologies.
The funds will be used to accelerate investments across commercial and operational initiatives following the release of the final data from the Company’s ROADS randomized controlled trial (RCT) last month. The ROADS RCT studied the use of GammaTile, the Company’s FDA-cleared bioresorbable radiotherapy implant, in patients with newly diagnosed brain metastases. The ROADS RCT data was selected for oral presentation at the 2026 American Society of Clinical Oncology (ASCO) (Free ASCO Whitepaper) conference and demonstrated statistical superiority for GammaTile relative to standard of care; GammaTile reduced the risk of tumor recurrence and death at 12 months by 93% and 41%, respectively.1
Proceeds from the financing will also support continued expansion of GT Medical Technologies’ recently initiated BRIDGES RCT in patients with newly diagnosed glioblastomas (GBMs).
"We are excited to lead this financing and to work with GT to unlock the potential of GammaTile therapy," said Jason Rostovsky, a Principal at Viking Global Investors. "GT Medical Technologies’ technology has demonstrated profound clinical impact, and we look forward to supporting the GT Medical Technologies team in improving the treatment algorithm for patients with resectable brain tumors."
"An oversubscribed financing of this magnitude and the strength of our syndicate provides significant optionality for the Company, allowing us to accelerate the next phase of our growth and make meaningful clinical and operational investments for the future," added James Leech, Chief Financial & Strategy Officer at GT Medical Technologies.
GammaTile is an innovative form of radiation therapy placed at the time of brain tumor removal surgery, delivering immediate, targeted radiation to the tumor resection site when cancer cells are at their lowest residual levels. Unlike conventional approaches that require delays between surgery and the initiation of radiation therapy to allow for wound healing, GammaTile eliminates this treatment gap by starting treatment immediately. By delivering immediate, concentrated radiation directly at the tumor site, GammaTile maximizes the treatment’s effectiveness against remaining cancer cells and reduces the risk of regrowth.
ROADS RCT data presented at the 2026 ASCO (Free ASCO Whitepaper) conference demonstrated that the 12-month rate of tumor surgical bed recurrence was dramatically lower with GammaTile at 1.3% compared with standard of care at 15.4% (HR:0.07, p=0.012).1 Surgical bed recurrence-free survival, defined as the time from surgery to either tumor recurrence or death from any cause, whichever occurred first, was significantly improved with GammaTile, with the median time to an event not reached compared with standard of care at 10.9 months (HR: 0.48, P=0.002).1 Additionally, 24-month overall survival was 61.7% for GammaTile compared with 35.7% for standard of care (HR: 0.59, p=0.032).
(Press release, GT Medical Technologies, JUN 9, 2026, View Source [SID1234666512])