Jury Finds in Cytek’s Favor on Three of Four Asserted Claims; Company to Challenge Remaining Finding (Form 8-K)

Jury Finds in Cytek's Favor on Three of Four Asserted Claims; Company to Challenge

Remaining Finding

FREMONT, Calif., August 21, 2026 (GLOBE NEWSWIRE) - Cytek Biosciences, Inc. ("Cytek Biosciences," "Cytek," or the "Company") (Nasdaq: CTKB), a leading cell analysis solutions company, today announced that a jury in the United States District Court for the District of Delaware returned a verdict in the patent infringement action brought by Beckman Coulter, Inc. The jury found in Cytek's favor on three of the four asserted patent claims, finding noninfringement and invalidity as to each of those three claims. With respect to one claim, the jury found no literal infringement but found infringement under the doctrine of equivalents. The jury awarded past damages consisting of $20 million in lost profits and $36 million in royalties. Cytek intends to pursue post-verdict motions challenging the finding of infringement under the doctrine of equivalents and the related damages award.

The verdict does not require any changes to the Company's current product offerings or operations, and Cytek's spectral flow cytometry products remain available to customers worldwide.

"We are pleased that the jury found in our favor on the substantial majority of claims in this case, including findings of noninfringement and invalidity as to three of the four asserted claims," said Dr. Wenbin Jiang, CEO of Cytek Biosciences. "We fundamentally disagree with the single remaining finding and damages award and intend to pursue all available post-trial remedies, including potentially an appeal to the United States Court of Appeals for the Federal Circuit. Cytek independently developed a fundamentally different approach to flow cytometry when we pioneered Full Spectrum Profiling technology."

Cytek will continue to invest in its proprietary and patented Full Spectrum Profiling^™ platform and remains committed to delivering innovative cell analysis solutions to researchers and clinicians worldwide.

About Cytek Biosciences, Inc.

Cytek Biosciences (Nasdaq: CTKB) is a leading cell analysis solutions company advancing the next generation of cell analysis tools by delivering high-resolution, high-content and high-sensitivity cell analysis utilizing its patented Full Spectrum Profiling^™ (FSP^®) technology. Cytek's novel approach harnesses the power of information within the entire spectrum of a fluorescent signal to achieve a higher level of multiplexing with precision and sensitivity. Cytek's platform includes: its core FSP instruments, the Cytek Aurora^™, Northern Lights^™, Cytek Aurora^™ CS, Cytek Aurora^™ Evo, and Cytek Borealis^™ systems; the Cytek Orion^™ reagent cocktail preparation system; the Enhanced Small Particle^™ (ESP^™) detection technology; the flow cytometers and imaging products under the Amnis^® and Guava^® brands; and reagents, software and services to provide a comprehensive and integrated suite of solutions for its customers. Cytek is headquartered in Fremont, California with offices and distribution channels across the globe. More information about the company and its products is available at www.cytekbio.com.

Cytek's products are for research use only and not for use in diagnostic procedures (other than Cytek's Northern Lights-CLC system and certain reagents, which are available for clinical use only in China and the European Union).

Cytek, Full Spectrum Profiling, FSP, Cytek Aurora, Cytek Borealis, Northern Lights, Enhanced Small Particle, ESP, Cytek Orion, Amnis and Guava are trademarks of Cytek Biosciences, Inc.

In addition to filings with the Securities and Exchange Commission (SEC), press releases, public conference calls and webcasts, Cytek uses its website (www.cytekbio.com), LinkedIn page and X account as channels of distribution for information about the company, its products, planned financial and other announcements, attendance at upcoming investor and industry conferences and other matters. Certain information disseminated through these channels may be material to investors, and Cytek may use these channels to disseminate such information in accordance with Regulation FD and other applicable disclosure requirements. Therefore, investors should monitor Cytek's website, LinkedIn page, and X account in addition to following its SEC filings, news releases, public conference calls and webcasts.