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Genprex Selects Leading Clinical and Commercial Contract Development and Manufacturing Organization for Manufacturing Scale Up of Diabetes Gene Therapy

(Very Positive)
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Genprex (NASDAQ:GNPX) announced a development and manufacturing agreement with a leading U.S.-based clinical and commercial CDMO to scale up manufacturing of its AAV-based diabetes gene therapy program. The CDMO will produce cGMP-compliant drug product for Genprex’s IND-enabling preclinical studies and planned future clinical trials.

The roadmap includes process optimization using advanced AAV technologies, bioreactor scale-up, analytical qualification and potency assay development, and strict GMP compliance. Genprex’s candidate delivers Pdx1 and MafA genes to the pancreas, aiming to convert alpha cells into insulin-producing beta-like cells in T1D and rejuvenate exhausted beta cells in T2D, with supporting mouse and NHP preclinical data.

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Positive

  • CDMO agreement to scale diabetes gene therapy from research-grade to clinical/commercial-ready manufacturing
  • cGMP-compliant production to supply material for IND-enabling studies and future clinical trials
  • Defined manufacturing roadmap including process optimization, bioreactor scale-up, and potency assay development
  • Preclinical T1D data showing restored normal blood glucose for extended periods in mouse models
  • NHP T1D studies showing decreased insulin needs, increased c‑peptide, and improved glucose tolerance
  • Preclinical T2D models indicating replenishment and rejuvenation of exhausted beta cells in mouse and NHP studies

Negative

  • None.

News Explained

The disclosure adds that the manufacturing transition has begun: Genprex says the process moved from an academic setting to the CDMO and the new plasmid is already being used to manufacture AAV, while clinical drug-product supply remains planned.

Market Reaction – GNPX

+2.35% $4.58 3023.8x vol
15m delay
+2.35% Vs previous close
+48.3% Peak Tracked
-16.7% Trough Tracked
$4.58 Last Price
$3.96 $7.51 Day Range
$2.31M Market Cap
3023.8x Rel. Volume

Following this news, GNPX has gained 2.35%, reflecting a moderate positive market reaction. Argus tracked a peak move of +48.3% during the session. Argus tracked a trough of -16.7% from its starting point during tracking. Our momentum scanner has triggered 35 alerts so far, indicating elevated trading interest and price volatility. The stock is currently trading at $4.58. Trading volume is exceptionally heavy at 3023.8x the average, suggesting very strong buying interest.

Data tracked by StockTitan Argus (15 min delayed). Upgrade to Gold for real-time data.

Market Context

The stock is up +7.1% following this news. +10.95% was the 24-hour reaction to the June 17 BIO 2026 ...
Analysis

The stock is up +7.1% following this news. +10.95% was the 24-hour reaction to the June 17 BIO 2026 announcement, providing a prior company-specific comparison. The June 5 S-3 shelf is not effective, while the recent filing states that additional capital will be required.

Historical Context

5 past events · Latest: Aug 03 (Positive)
Pattern 5 events
Date Event Sentiment 24h Move Catalyst
Aug 03 Roche collaboration Positive -20.7% Biomarker assay validation collaboration with Roche Diagnostics for NSCLC trials
Jun 22 Patent allowance Positive -7.1% Canadian patent allowance covered Reqorsa combinations with PD-1 or PD-L1 antibodies
Jun 17 BIO conference participation Positive +10.9% Company announced participation and investor meetings at BIO International Convention 2026
May 26 Clinical biomarker data Positive -6.0% Biomarker associations with progression-free survival were presented in lung cancer patients
May 14 Preclinical diabetes data Positive +1.2% Pdx1/MafA delivery reversed hyperglycemia and improved beta-cell function in mice

24h Move is the share-price change in the day after each event; other market factors may also have contributed.

Pattern Detected

Recent positive Genprex announcements more often coincided with negative 24-hour reactions, with three of five events diverging from the announcement sentiment.

Key Terms

cdmo, aav-based therapy, cgmp, ind-enabling, +2 more
6 terms
cdmo technical
"development and manufacturing agreement with a leading U.S. based clinical and commercial CDMO"
A contract development and manufacturing organization (CDMO) is a company that provides specialized services to help develop and produce pharmaceutical products for other businesses. Think of it as a contract factory that takes a company's recipe and makes the product on their behalf. For investors, CDMOs are important because they support the growth of pharmaceutical companies and can be key partners in bringing new medicines to market.
aav-based therapy technical
"produce the Company's AAV-based therapy in a current Good Manufacturing Practices"
AAV-based therapy is a type of gene therapy that uses engineered adeno-associated viruses (AAVs) as delivery vehicles to carry corrective genes into a patient’s cells. Think of the virus as a harmless courier that delivers new instructions to malfunctioning cells to address genetic disorders or change how cells behave. It matters to investors because development, regulatory approval, manufacturing complexity, and long-term patient outcomes all drive potential commercial value and financial risk.
cgmp regulatory
"current Good Manufacturing Practices (cGMP) compliant facility"
cGMP (current Good Manufacturing Practice) are government-enforced quality standards that manufacturers must follow to ensure drugs, medical devices, and related products are made consistently, safely, and meet specified quality tests. For investors, cGMP compliance is like a restaurant passing health inspections: it reduces the risk of product recalls, regulatory fines, or production stoppages that can hurt revenue and company value, and it supports market access and long-term trust.
ind-enabling regulatory
"drug product to be used in Genprex's IND-enabling preclinical studies"
Ind-enabling describes the preclinical tests and safety work a drug candidate must pass before a company can ask regulators for permission to start human trials (an Investigational New Drug or IND filing). Think of it as the mechanical inspection and crash-testing a prototype car needs before it can legally be driven on public roads; for investors, successful ind-enabling work reduces technical and regulatory risk and makes clinical progress and potential value creation more likely.
potency assay technical
"Analytical Qualification and Development of Potency Assay"
A potency assay is a laboratory test that measures how strongly a drug, vaccine, or biological product produces its intended effect, much like testing how well a battery powers a device or how strong a cup of coffee is. It matters to investors because consistent, reliable potency results are required for regulatory approval, batch-to-batch quality control, and predictable clinical performance—factors that directly affect a product’s marketability, production costs, and revenue risk.
lipid nanoparticle delivery technical
"research a non-viral lipid nanoparticle delivery of its diabetes gene therapy"
Lipid nanoparticle delivery is a method that uses tiny fat-based carriers, like microscopic soap bubbles or shipping containers, to encapsulate and transport drugs, RNA or other therapeutic molecules into cells. It matters to investors because these carriers influence how well a medicine works, how it is manufactured and scaled, and how regulators and patent systems view the product—factors that affect development costs, timelines, and commercial potential.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Collaboration Allows Genprex to Accelerate Manufacturing Processes for IND-Enabling Preclinical Studies and Future Clinical Trials

AUSTIN, Texas, Aug. 18, 2026 /PRNewswire/ -- Genprex, Inc. ("Genprex" or the "Company") (NASDAQ: GNPX), a clinical-stage gene therapy company focused on developing life-changing therapies for patients with cancer and diabetes, today announced that it has entered into a development and manufacturing agreement with a leading U.S. based clinical and commercial Contract Development and Manufacturing Organization (CDMO) to initiate the manufacturing scale-up of its diabetes gene therapy program. This strategic selection allows for the transition of the Company's therapeutic candidate from research-grade production to clinical and commercial-ready output.

Genprex, Inc. is a clinical-stage gene therapy company focused on developing life-changing therapies for patients with cancer and diabetes. (PRNewsfoto/Genprex, Inc.)

This collaboration provides the infrastructure necessary to produce the Company's AAV-based therapy in a current Good Manufacturing Practices (cGMP) compliant facility. The CDMO will manufacture and supply drug product to be used in Genprex's IND-enabling preclinical studies and future clinical trials.

"This strategic partnership represents a significant advancement for our diabetes gene therapy clinical program," said Ryan Confer, President and Chief Executive Officer at Genprex. "We have transferred the manufacturing process for our diabetes product candidate from the academic setting, where it was previously manufactured, into a reputable cGMP compliant CDMO. Through this collaboration, Genprex aims to advance its diabetes gene therapy program toward clinical evaluation, focusing on the safety and efficacy required for upcoming toxicology studies."

By partnering with an established CDMO, the Company gains access to specialized expertise in scaling complex biologics, ensuring consistent delivery of the therapeutic payload, a critical factor for administration in patients with Type 1 diabetes (T1D) and Type 2 diabetes (T2D).

The manufacturing roadmap includes several technical priorities:

  • Process Optimization: Using latest AAV production technologies to increase production efficiency.
  • Scale Up: Use of capacity bioreactors to increase dose availability in preparation for multi-center trials.
  • Analytical Qualification and Development of Potency Assay: Implementing rigorous quality control protocols to ensure AAV potency, stability and purity.
  • GMP Compliance: Maintaining strict adherence to cGMP standards to support future regulatory submissions.

Genprex's diabetes gene therapy product candidate involves the delivery of the Pdx1 and MafA genes into the pancreas via the pancreatic duct utilizing an AAV vector. Novel advanced technologies were incorporated in these processes to optimize the plasmid construct to increase stability of expression and modify the backbone to align with other plasmids used for AAV products. The new plasmid was cloned, purified, and manufactured and is currently being used in the manufacture of AAV.

Genprex is continuing work with CDMOs and research partners to optimize constructs and evaluate alternative second-generation approaches including different AAV and non-viral constructs. The Company's strategic collaboration with a CDMO to research a non-viral lipid nanoparticle delivery of its diabetes gene therapy drug candidate could allow for potential re-dosing of patients to optimize treatment.

Genprex's diabetes gene therapy product candidate is under development as a potential treatment for both T1D and T2D. In T1D, the drug candidate is designed to work by transforming alpha cells in the pancreas into functional beta-like cells, which can produce insulin but may be distinct enough from beta cells to evade the body's immune system. In vivo, preclinical studies show that the drug candidate restored normal blood glucose levels for an extended period of time in T1D mouse models. In T1D NHP in vivo models, the drug candidate demonstrated the ability to decrease insulin requirements, increase c-peptide levels and improve glucose tolerance.

In a similar approach for T2D, where autoimmunity is not at play, the drug candidate demonstrated the ability to replenish and rejuvenate exhausted beta cells that make insulin in both mouse and NHP models.

About Genprex, Inc.
Genprex, Inc. is a clinical-stage gene therapy company focused on developing life-changing therapies for patients with cancer and diabetes. Genprex's technologies are designed to administer disease-fighting genes to provide new therapies for large patient populations with cancer and diabetes who currently have limited treatment options. Genprex works with world-class institutions and collaborators to develop drug candidates to further its pipeline of gene therapies in order to provide novel treatment approaches. Genprex's oncology program utilizes its systemic, non-viral Oncoprex® Delivery System which encapsulates the gene-expressing plasmids using lipid-based nanoparticles in a lipoplex form. The resultant product is administered intravenously, where it is taken up by tumor cells that then express tumor suppressor proteins that were deficient in the tumor. The Company's lead product candidate, Reqorsa® Gene Therapy (quaratusugene ozeplasmid), is being evaluated in two clinical trials as a treatment for NSCLC and SCLC. Each of Genprex's lung cancer clinical programs has received a Fast Track Designation from the FDA for the treatment of that patient population, and Genprex's SCLC program has received an FDA Orphan Drug Designation. Genprex's diabetes gene therapy approach is comprised of a novel infusion process that uses an AAV vector to deliver Pdx1 and MafA genes directly to the pancreas. In models of Type 1 diabetes, GPX-002 transforms alpha cells in the pancreas into functional beta-like cells, which can produce insulin but may be distinct enough from beta cells to evade the body's immune system. In a similar approach for Type 2 diabetes, where autoimmunity is not at play, GPX-002 is believed to rejuvenate and replenish exhausted beta cells.

Interested investors and shareholders are encouraged to sign up for press releases and industry updates by visiting the Company Website, registering for Email Alerts and by following Genprex on Twitter, Facebook and LinkedIn.

Cautionary Language Concerning Forward-Looking Statements
Statements contained in this press release regarding matters that are not historical facts are "forward-looking statements" within the meaning of the Private Securities Litigation Reform Act of 1995. These forward-looking statements are made on the basis of the current beliefs, expectations and assumptions of management, are not guarantees of performance and are subject to significant risks and uncertainty. These forward-looking statements should, therefore, be considered in light of various important factors, including those set forth in Genprex's reports that it files from time to time with the Securities and Exchange Commission and which you should review, including those statements under "Item 1A – Risk Factors" in Genprex's Annual Report on Form 10-K for the year ended December 31, 2025.

Because forward-looking statements are subject to risks and uncertainties, actual results may differ materially from those expressed or implied by such forward-looking statements. Such statements include, but are not limited to, statements regarding: Genprex's ability to advance the clinical development, manufacturing and commercialization of its product candidates in accordance with projected timelines and specifications; the timing and success of Genprex's clinical trials, its intended regulatory submissions and any resulting regulatory approvals; the effect of Genprex's product candidates, alone and in combination with other therapies, on cancer and diabetes; Genprex's future growth and financial status, including Genprex's ability to maintain compliance with the continued listing requirements of The Nasdaq Capital Market and to continue as a going concern and to obtain capital to meet its long-term liquidity needs on acceptable terms, or at all; Genprex's commercial and strategic partnerships, including those with its third party vendors, suppliers and manufacturers and their ability to successfully perform and scale up the manufacture of its product candidates; Genprex's intellectual property and licenses; and Genprex's current expectations, estimates, forecasts and projections about the industry and markets in which it operates.

These forward-looking statements should not be relied upon as predictions of future events and Genprex cannot assure you that the events or circumstances discussed or reflected in these statements will be achieved or will occur. If such forward-looking statements prove to be inaccurate, the inaccuracy may be material. You should not regard these statements as a representation or warranty by Genprex or any other person that Genprex will achieve its objectives and plans in any specified timeframe, or at all. You are cautioned not to place undue reliance on these forward-looking statements, which speak only as of the date of this press release. Genprex disclaims any obligation to publicly update or release any revisions to these forward-looking statements, whether as a result of new information, future events or otherwise, after the date of this press release or to reflect the occurrence of unanticipated events, except as required by law.

Genprex, Inc.
(877) 774-GNPX (4679)

GNPX Investor Relations
investors@genprex.com

GNPX Media Contact
Kalyn Dabbs
media@genprex.com

Cision View original content to download multimedia:https://www.prnewswire.com/news-releases/genprex-selects-leading-clinical-and-commercial-contract-development-and-manufacturing-organization-for-manufacturing-scale-up-of-diabetes-gene-therapy-302853489.html

SOURCE Genprex, Inc.

FAQ

What did Genprex (GNPX) announce about its diabetes gene therapy manufacturing on August 18, 2026?

Genprex announced a development and manufacturing agreement with a leading U.S.-based CDMO to scale up its AAV-based diabetes gene therapy. According to Genprex, the CDMO will supply cGMP-compliant drug product for IND-enabling preclinical studies and future clinical trials supporting Type 1 and Type 2 diabetes programs.

How will the new CDMO partnership impact Genprex’s diabetes gene therapy program (GNPX)?

The partnership provides cGMP manufacturing infrastructure and specialized AAV scale-up expertise for Genprex’s diabetes gene therapy. According to Genprex, the plan includes process optimization, bioreactor scale-up, analytical qualification, potency assay development, and regulatory-grade quality control to support upcoming toxicology work and clinical evaluation.

What is the mechanism of Genprex’s diabetes gene therapy candidate GPX-002 for T1D and T2D?

Genprex’s candidate uses an AAV vector to deliver Pdx1 and MafA genes directly to the pancreas. According to Genprex, in T1D models it transforms alpha cells into insulin-producing beta-like cells, while in T2D models it is designed to rejuvenate and replenish exhausted insulin-producing beta cells.

What preclinical results has Genprex (GNPX) reported for its diabetes gene therapy in T1D models?

In T1D mouse models, Genprex’s candidate restored normal blood glucose levels for an extended period. According to Genprex, T1D NHP models showed decreased insulin requirements, increased c-peptide levels, and improved glucose tolerance following treatment with the diabetes gene therapy candidate.

What preclinical data does Genprex report for its diabetes gene therapy in Type 2 diabetes models?

In T2D mouse and NHP models, the drug candidate demonstrated the ability to replenish and rejuvenate exhausted beta cells. According to Genprex, this activity targets insulin-producing cells where autoimmunity is not a primary factor, supporting development as a potential T2D treatment.

Is Genprex exploring non-viral delivery for its diabetes gene therapy program (GNPX)?

Yes. Genprex is collaborating with CDMOs and research partners on alternative constructs and non-viral lipid nanoparticle delivery. According to Genprex, the non-viral approach could allow potential re-dosing of patients, complementing its current AAV-based strategy for the diabetes gene therapy candidate.

What are the key manufacturing priorities for Genprex’s diabetes gene therapy scale-up?

Key priorities include AAV process optimization, bioreactor-based scale-up, analytical qualification, and potency assay development. According to Genprex, the program also emphasizes rigorous GMP compliance to ensure AAV potency, stability, and purity for IND-enabling preclinical studies and future multi-center clinical trials.