Lasix® ONYU[1] Achieves CE Marking under EU Medical Device Regulation, Reaching a Critical Milestone Toward International Market Authorization; European Medicines Agency Confirms Eligibility for Centralized Procedure Review Based on Technical Innovation

• CE Marking confirms the device's conformity with EU Medical Device Regulation (MDR 2017/745) General Safety and Performance Requirements (GSPRs)
• EMA centralized procedure acceptance on the basis of technical innovation expedites European process of Market Authorization.

BURLINGTON, Mass., April 28, 2026 /PRNewswire/ -- SQ Innovation, developer of Lasix^® ONYU, today announced two important regulatory milestones in its international expansion strategy: the receipt of a CE marking certificate for the Lasix ONYU device, and the acceptance of Lasix ONYU by the European Medicines Agency (EMA) for review under the centralized procedure on the basis of technical innovation. Together, these milestones represent a significant step forward in bringing this novel at-home subcutaneous furosemide treatment to patients in Europe and other international markets.

CE Marking, supported by an EU Declaration of Conformity and independently assessed by a Notified Body, represents SQ Innovation's formal declaration that the Company's Infusor for subcutaneous delivery of furosemide meets the General Safety and Performance Requirements (GSPRs) of EU MDR 2017/745. CE Marking is a prerequisite for marketing medical devices within the EU and is recognized in numerous other countries as a basis for market authorization. Achieving CE Marking for Lasix ONYU is a critical milestone in SQ Innovation's global regulatory strategy and underscores the Company's commitment to rigorous quality and safety standards.

In a separate but complementary development, the EMA has confirmed that the Company's subcutaneous furosemide product, marketed in the United States under the name Lasix ONYU, is eligible for review under its centralized procedure — the regulatory pathway that, upon approval, grants simultaneous market authorization across all EU member states. Notably, the EMA's acceptance is based on technical innovation, a designation that reflects the EMA's recognition of the product as a meaningfully novel drug-device combination addressing an unmet medical need. This designation is consistent with the EMA's mandate to facilitate patient access to innovative medicines across the EU.

The product is developed for treatment of edema in patients with heart failure. Edema in heart failure is a leading reason for hospital admission among elderly patients, placing significant personal and financial burden on patients, families, and the healthcare system. In Europe, as in the United States, heart failure-related hospitalizations represent a substantial and growing challenge for health systems. The product's subcutaneous delivery mechanism enables effective diuresis comparable to intravenous furosemide but made possible in the comfort and convenience of the patient's home — potentially reducing hospitalizations, improving quality of life, and lowering overall healthcare costs.

"The CE Marking and EMA's acceptance for the centralized procedure are pivotal milestones on this path home for the millions of patients that are now treated in hospitals," said Pieter Muntendam MD, founder, President and CEO of SQ Innovation. "Following FDA approval in the United States in 2025, these European regulatory milestones reflect our commitment to bringing this transformative at-home therapy to patients globally. We believe subcutaneous infusion of loop diuretics has the potential to fundamentally change how heart failure-related edema is managed — shifting care from the hospital to the home, in a similar manner as has been done for countless other conditions over the past 50 years."

SQ Innovation expects to submit for the Market Authorization later this year and anticipates further updates on the European approval timeline. The Company is also actively engaging with potential distribution and commercialization partners in key markets outside the United States.

About Lasix ONYU

Lasix^® ONYU is a drug-device combination that was approved by the U.S. Food and Drug Administration on October 7, 2025, for the treatment of edema in adult patients with chronic heart failure. Lasix ONYU is available for ordering from Cardinal and Cencora and for dispensing and overnight delivery from Walmart Specialty Pharmacy. The pharmaceutical component of Lasix ONYU is a novel, high-concentration formulation of the diuretic furosemide, at 30 mg/mL. It comes in a pre-filled glass cartridge containing 80 mg of furosemide in 2.67 mL. The Lasix ONYU Infusor consists of two main parts: the Reusable Unit and the Disposable Unit. The Reusable Unit is an electromechanical device that contains the battery, motor, and electronic components necessary for operation and safety functions. It can be used up to 48 times before it can be recycled. The Disposable Unit is a sterile, single-use plastic component that holds the drug cartridge. It includes a micro-`piston pump, fluid path, needle insertion and retraction mechanism, and a 29-gauge needle. After placement on the abdomen, the needle penetrates the skin when the device is activated. The Lasix ONYU Infusor slowly administers 80 mg furosemide over a period of five hours. This method results in significant diuresis similar to IV, but in a more controlled manner. This avoids the brief, intense diuretic effect that occurs with rapid IV infusion or injection. The advanced two component design offers benefits for patients, healthcare providers, payers, and the environment. For Important Safety Information, Prescribing Information and Instructions for Use, visit www.lasix-onyu.com.

INDICATION
Lasix^® ONYU is a loop diuretic indicated for the treatment of edema in adult patients with chronic heart failure.

IMPORTANT SAFETY INFORMATION
Before using Lasix^® ONYU, read the Instructions for Use and tell your healthcare provider about all your medical conditions, including if you are allergic to furosemide or any of the ingredients in Lasix ONYU, have trouble urinating, or if you are allergic to medical adhesives.

Tell your healthcare provider about all of the medicines you take, including prescription and over-the-counter medicines.

Warning: Only use the Lasix ONYU Prefilled Cartridge with the Lasix ONYU Infusor. Do not use insulin cartridges or other medicine cartridges in the Lasix ONYU Infusor. Doing so could cause severe injury.

What are the possible side effects of Lasix ONYU?

Dehydration: Lasix ONYU is a diuretic that can make you lose a lot of fluid and with it electrolytes. You may get a dry mouth, have increased thirst, get muscle pains or cramps, have reduced urine output or your urine may be more yellow than normal, you may get a headache, get dry skin, or have nausea or vomiting. Your healthcare provider may check your electrolytes while receiving Lasix ONYU.

Low Blood Pressure: Lasix ONYU may lower your blood pressure temporarily. You may feel lightheaded or dizzy. This usually happens when you stand. Getting up slowly may help.

High Blood Sugar: Lasix ONYU may increase blood sugar (glucose) levels if you have diabetes mellitus.

Loss of Hearing: Lasix ONYU can cause ringing in your ears. If so, tell your healthcare provider.

Risk of Sunburn: Your skin may be more sensitive to sunlight while taking Lasix ONYU.

Infusion Site Reactions: Lasix ONYU can cause infusion site pain, bruising and temporary swelling or redness at the site of the Infusor.

Incomplete Dosing: Make sure the Infusor does not get wet during use. Also limit your physical activities. Some movements or when it gets wet may stop the infusion and you may not get all the medication.

These are not all the possible side effects of Lasix ONYU. For more information, ask your healthcare provider or pharmacist.

Call your healthcare provider for medical advice about side effects. You may report side effects to the FDA at 1-800-FDA-1088.

Please see the full Prescribing Information and Instructions for Use at www.lasix-onyu.com.

About SQ Innovation

SQ Innovation, Inc. is a privately held Swiss biopharmaceutical company with offices in Zug, Switzerland, Burlington, MA, USA, and Rotterdam, The Netherlands. The company was founded to develop and commercialize innovative, cost-effective therapies for subcutaneous delivery, enabling at-home treatment for conditions that are usually managed during hospitalizations. SQ Innovation has developed a novel drug-device combination for treating edema in adult patients with chronic heart failure — a condition typically requiring intravenous administration of diuretics in a hospital setting. Lasix ONYU was developed with consideration for patients, payors, healthcare providers, and environmental impact. Lasix ONYU received approval from the US Food and Drug Administration on October 7, 2025. For more information about Lasix ONYU, including important safety information and the full prescribing information, please visit www.lasix-onyu.com.

Cautionary Note Regarding Forward-Looking Statements
This press release contains statements that may or are considered "forward-looking statements. All statements other than statements of historical facts are "forward-looking statements," including those relating to future events. In some cases, you can identify forward-looking statements by terminology such as "anticipate," "believe," "continue," "expect," "may," "on track," "plan," "potential," "target," "will," or "would", the negative of terms like these, or other words or terms of similar meaning. These may include implied or express statements about our expectations regarding strategy, business plans, and objectives on the development of Lasix ONYU; decisions by regulatory authorities regarding marketing approval or material restrictions, limitations, or obligations on marketing and market access of the Company's products; delays in arranging satisfactory manufacturing capabilities and establishing commercial infrastructure; the risk that third party payors (including governmental agencies) will not reimburse for the use of products at acceptable rates or at all; the risk that third parties will not agree to license any necessary intellectual property on reasonable terms or at all; and other risks set forth from time to time. Any forward-looking statements in this press release are based on management's current expectations and beliefs and are subject to a number of risks, uncertainties, and important factors that may cause actual events or results to differ materially from any forward-looking statements contained in this press release. In addition, any forward-looking statements represent our views only as of today and should not be relied upon as representing our views as of any subsequent date. We explicitly disclaim any obligation to update any forward-looking statements. No representations or warranties (expressed or implied) are made about the accuracy of any such forward-looking statements.

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^[1] Lasix® ONYU is the proprietary name for the furosemide injection combination product in the US. The trademark Lasix® is registered for Validus Pharmaceuticals L.L.C. in the United States and used by SQ Innovation under license. The proprietary name for Europe has not yet been established.

SOURCE SQ Innovation