Remarks from Senior Vice President of Product Development John Vieceli will highlight the Company’s scalable next-generation Protein Sequencing™ technology to analyze the proteome with single amino acid resolution

Quantum-Si Incorporated (Nasdaq: QSI) (“Quantum-Si,” “QSI” or the “Company”), The Protein Sequencing Company™, today announced the Company and Senior Vice President of Product Development John Vieceli will be presenting at the 2023 Festival of Genomics & Biodata, and first-ever proteomics focused track. Additionally, Quantum-Si will also be presenting a poster throughout the duration of the conference. The Festival of Genomics & Biodata will take place October 4-5, 2023 at the Convention Center in Boston, Massachusetts.

“This year’s Festival of Genomics in Boston includes an eye toward the future of biological research and innovation. After several decades of vital DNA research and insights, we are now moving to the next frontier of important biological research: the human proteome,” said John Vieceli, Senior Vice President of Product Development at Quantum-Si. “At Quantum-Si we believe protein sequencing through instruments like Platinum ™ is the next important step for deciphering and understanding human biology, and we are pleased to see that a historically genomics- focused conference shares our passion to showcase critical advancements in proteomics research on their stage this year.”

Details of Quantum-Si's Festival of Genomics & Biodata Participation:

October 4, 2023, 12:10 PM ET: Boston Convention Center, “Park Stage”

30 Minute Speaking Session

Speaker: John Vieceli, SVP of Product Development

Topic: Beyond the Genome: Using a Scalable Next-Generation Protein Sequencing Technology to Analyze the Proteome with Single Molecule Resolution and Increased Amino Acid Coverage

Boston Convention Center, Exhibit Hall

Poster Presentation:

Presenter: Kendrick Nguyen

Topic: Beyond the Genome: How Quantum-Si's Platinum Identifies Protein Sequence and Post-Translational Modifications Often Overlooked by Genomics Data

Platinum, the world’s first next-generation single-molecule protein sequencing platform, uses proprietary recognizers to identify amino acids of proteins using kinetic binding signatures. Its elegant design and simple workflow enable broad-scale access to proteomic data, for every scientist, everywhere, making it a groundbreaking platform for the future of proteomics research. With its compact benchtop design and low price-point, Platinum is poised to accelerate breakthroughs across scientific disciplines, from drug discovery to biotech, and help people live healthier and longer lives.

About Quantum-Si Incorporated

Quantum-Si, The Protein Sequencing Company™, is focused on revolutionizing the growing field of proteomics. The Company's suite of technologies is powered by a first-of-its-kind semiconductor chip designed to enable next-generation single-molecule protein sequencing and digitize proteomic research in order to advance drug discovery and diagnostics beyond what has been possible with DNA sequencing. Learn more at quantum-si.com.

Forward Looking Statements

This press release includes "forward-looking statements" within the meaning of the "safe harbor" provisions of the United States Private Securities Litigation Reform Act of 1995. The actual results of the Company may differ from its expectations, estimates, and projections and, consequently, you should not rely on these forward-looking statements as predictions of future events. Words such as "expect," "estimate," "project," "budget," "forecast," "anticipate," "intend," "plan," "may," "will," "could," "should," "believes," "predicts," "potential," "continue," and similar expressions (or the negative versions of such words or expressions) are intended to identify such forward-looking statements. These forward-looking statements include, without limitation, the Company's expectations with respect to future performance and development and commercialization of products and services. These forward-looking statements involve significant risks and uncertainties that could cause the actual results to differ materially from those discussed in the forward-looking statements. Most of these factors are outside the Company's control and are difficult to predict. Factors that may cause such differences include, but are not limited to: the impact of COVID-19 on the Company's business; the inability to maintain the listing of the Company's Class A common stock on The Nasdaq Stock Market; the ability to recognize the anticipated benefits of the business combination, which may be affected by, among other things, competition and the ability of the Company to grow and manage growth profitably and retain its key employees; our ongoing leadership transition; changes in applicable laws or regulations; the ability of the Company to raise financing in the future; the success, cost and timing of the Company's product development and commercialization activities; the commercialization and adoption of the Company’s existing products and the success of any product the Company may offer in the future; the potential attributes and benefits of the Company’s commercialized Platinum™ protein sequencing instrument and the Company’s other products once commercialized; the Company's ability to obtain and maintain regulatory approval for its products, and any related restrictions and limitations of any approved product; the Company's ability to identify, in-license or acquire additional technology; the Company's ability to maintain its existing lease, license, manufacture and supply agreements; the Company's ability to compete with other companies currently marketing or engaged in the development or commercialization of products and services that serve customers engaged in proteomic analysis, many of which have greater financial and marketing resources than the Company; the size and growth potential of the markets for the Company's products and services, and its ability to serve those markets once commercialized, either alone or in partnership with others; the Company's estimates regarding future expenses, future revenue, capital requirements and needs for additional financing; the Company's financial performance; and other risks and uncertainties described under "Risk Factors" in the Company’s Annual Report for the fiscal year ended December 31, 2022, and in the Company's other filings with the SEC. The Company cautions that the foregoing list of factors is not exclusive. The Company cautions readers not to place undue reliance upon any forward-looking statements, which speak only as of the date made. The Company does not undertake or accept any obligation or undertaking to release publicly any updates or revisions to any forward-looking statements to reflect any change in its expectations or any change in events, conditions, or circumstances on which any such statement is based.

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