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iMDx Welcomes New VP Marketing to Prepare for Commercial Transplant Assay Launch

Key Takeaway: Insight Molecular Diagnostics Inc. (iMDx) has appointed Steven Tahmooressi as Vice President of Marketing as it gears up for the launch of its GraftAssureDx clinical assay in 2026. With over 25 years of experience, Tahmooressi will lead marketing efforts for transplant and oncology assays. The company aims to enhance access to transplant rejection testing through its innovative products.
Price reaction · baseline $3.9 (2025-10-13 close) · hit after-hours · clean, no other IMDX news in the window
day 0 close · peak
+4.6%

Market Sentiment Analysis

POSITIVE FACTORS

  • iMDx is preparing to launch its first clinical kitted assay in 2026.
  • Steven Tahmooressi brings over 25 years of experience in healthcare marketing.
  • The GraftAssureDx assay is expected to deliver significant value in the transplant market.
  • The company aims to democratize access to molecular diagnostic testing.

BiopharmaWatch Analysis

From our catalyst data and publicly available data · not financial advice
Cash runway
~5 mo
High dilution risk
Lead asset
99mTc-MIP-1404
Phase 3 · Prostate Cancer

Full Press Release Details

NASHVILLE, Tenn., Oct. 13, 2025 (GLOBE NEWSWIRE) -- Insight Molecular Diagnostics Inc., (Nasdaq: IMDX), (iMDx), today announced that it has welcomed Steven Tahmooressi to its executive leadership team as the company prepares to launch its first clinical kitted assay in 2026.
As Vice President of Marketing, Mr. Tahmooressi will be responsible for leading transplant and oncology assay marketing, bringing more than 25 years of healthcare industry experience, including a strong history in supporting the transplantation community, ranging from U.S. sales and marketing leadership to regional and global commercialization.
Mr. Tahmooressi joins iMDx most recently from Astellas Pharma where he was the Global Brand Lead of Established Products Marketing covering its transplant, urology and oncology brands. He also worked in various career progressing commercial roles during his respective tenures at Abbott Laboratories and Bristol-Myers Squibb.
“After three years of laser-focused investing in our kitted product for transplant rejection testing, we are now approaching the critical product launch phase of GraftAssureDx,” iMDx CEO Josh Riggs said. “As we prepare for FDA authorization of GraftAssureDx next year, we are thrilled to welcome Steven to the team to lead our marketing efforts on this mission-critical product. He brings a proven track record of new product marketing to drive commercial adoption in the U.S., Europe, Japan, Middle East, and the Asia Pacific regions.”
Mr. Riggs added, “With a relentless focus on the customer, Steven has led multiple successful U.S. and international product launches in high-touch fields of medicine including transplantation and immunology. Since starting with iMDx in late September, he has hit the ground running, including meeting with customers and supporting our successful presence at the annual meeting of the American Society of Histocompatibility & Immunogenetics in Orlando this month.”
The mission at iMDx is to democratize access to molecular diagnostic testing – and the company’s first targeted strategic market is transplantation rejection testing, through its GraftAssure family of assays. These assays represent iMDx’s initial flagship technology. The assay family includes GraftAssureCore, the company’s laboratory-developed test (LDT), currently reimbursed by Medicare and performed at its CLIA-certified laboratory in Nashville. GraftAssureIQ became available for purchase in summer 2024 forresearch use only, while GraftAssureDx is in development as a clinical molecular diagnostic test kit, which can be distributed to hospitals to expand and improve testing access for kidney transplant patients.
The company expects that the clinical kitted version of its assay will deliver new value in the estimated $1 billion addressable market for kitted transplant rejection testing. GraftAssure tests measure an established biomarker of transplant rejection, known as donor-derived cell-free DNA, or dd-cfDNA.
“I am passionate about ensuring that patients and health care providers have access to the tools they need, and it's clear to me that iMDx is developing a product that will deliver value to the transplantation market,” iMDx Marketing VP Tahmooressi added. “Since starting with the company in September, I have met with transplant physicians and HLA lab leads who have lauded the potential that iMDx transplant products can bring to their patients, and I am confident that we are developing a solution to fit those needs.”
iMDx Transplant Products and Product Candidates in DevelopmentThe company’s flagship transplant testing technology quantifies a molecular biomarker known as donor-derived cell-free DNA (dd-cfDNA). The company’s scientists in Germany and the U.S. have played a crucial role over the past decade in developing the science that helped establish dd-cfDNA as a trusted biomarker of transplant rejection, and iMDx is now commercializing that technology using a market disruptive approach. Its transplant diagnostics under the GraftAssure brand include the following:
About Insight Molecular Diagnostics Inc.Insight Molecular Diagnostics Inc., or iMDx, formerly Oncocyte Corp. (OCX), is a pioneering precision diagnostics technology company whose mission is to democratize access to novel molecular diagnostic testing to improve patient outcomes. iMDx utilizes a well-established proprietary approach to quantify dd-cfDNA, which is a widely used molecular biomarker of transplant rejection.
iMDx™, GraftAssure™, GraftAssureCore™, GraftAssureIQ™, GraftAssureDx™, and VitaGraft™ are trademarks of Insight Molecular Diagnostics Inc.
Insight Molecular Diagnostics (Nasdaq: IMDX) moved its headquarters from Irvine, Calif., to Nashville, Tenn., in June 2025. The company’s new NASDAQ symbol became effective June 18. Investors may visithttps://investors.imdxinc.com/for more information.
Forward-Looking StatementsAny statements that are not historical fact (including, but not limited to, statements that contain words such as “will,” “believes,” “plans,” “anticipates,” “expects,” “estimates,” “may,” and similar expressions) are forward-looking statements. These statements include those pertaining to, among other things, iMDx’s development and commercialization efforts and the potential value of the GraftAssure family of assays to kidney transplant patients, and other statements about the future expectations, beliefs, goals, plans, or prospects expressed by management. Forward-looking statements involve risks and uncertainties, including, without limitation, risks inherent in the development and/or commercialization of diagnostic tests or products, uncertainty in the results of clinical trials or regulatory approvals, the capacity of iMDx’s third-party supplied blood sample analytic system to provide consistent and precise analytic results on a commercial scale, potential interruptions to supply chains, the need and ability to obtain future capital, maintenance of intellectual property rights in all applicable jurisdictions, obligations to third parties with respect to licensed or acquired technology and products, the need to obtain third party reimbursement for patients’ use of any diagnostic tests iMDx or its subsidiaries commercialize in applicable jurisdictions, and risks inherent in strategic transactions such as the potential failure to realize anticipated benefits, legal, regulatory or political changes in the applicable jurisdictions, accounting and quality controls, potential greater than estimated allocations of resources to develop and commercialize technologies, or potential failure to maintain any laboratory accreditation or certification. Actual results may differ materially from the results anticipated in these forward-looking statements and accordingly such statements should be evaluated together with the many uncertainties that affect the business of iMDx, particularly those mentioned in the “Risk Factors” and other cautionary statements found in iMDx’s Securities and Exchange Commission (SEC) filings, which are available from the SEC’s website. You are cautioned not to place undue reliance on forward-looking statements, which speak only as of the date on which they were made. iMDx undertakes no obligation to update such statements to reflect events that occur or circumstances that exist after the date on which they were made, except as required by law.

Investor Contact:Doug FarrellLifeSci Advisors LLCdfarrell@lifesciadvisors.com

Frequently Asked Questions

Who is the new VP of Marketing at iMDx?

Steven Tahmooressi has been appointed as the new VP of Marketing at iMDx.

What is the focus of iMDx's new assay?

The new assay, GraftAssureDx, focuses on transplant rejection testing.

When is the GraftAssureDx assay expected to launch?

The GraftAssureDx assay is expected to launch in 2026.

What experience does Steven Tahmooressi bring?

Tahmooressi brings over 25 years of healthcare marketing experience.

What is the mission of iMDx?

iMDx aims to democratize access to molecular diagnostic testing.

Last updated: Oct 13, 2025