Quantum-Si Announces the Launch of V4 Sequencing Kit, Expanding Proteome Coverage and Unlocking New Applications for Protein Sequencing
Quantum-Si Incorporated - Class A (QSI)
Company Research
Source: Business Wire
BRANFORD, Conn.--(BUSINESS WIRE)--Quantum-Si Incorporated (Nasdaq: QSI) (“Quantum-Si,” “QSI” or the “Company”), a proteomics technology company redefining protein analysis through single-molecule detection, today announced the launch of the V4 Sequencing Kit. The new kit is compatible with both the Platinum® and Platinum® Pro instruments.The V4 Sequencing Kit improves sequencing coverage with the addition of glycine (G) recognition, enhanced alanine (A) and serine (S) recognition, an enzyme designed to cut through the amino acid directly proceeding proline (P), and new algorithms to improve precision and mixture handling.Key Advancements & Applications Enabled:Sequence Beyond Proline – V4 Sequencing Kit enables the analysis of proline-rich domains common in antibodies and membrane proteins.Expanded Amino Acid Coverage – New recognizers, enzyme and improved bioinformatics offers an 85% increase in sequenceable peptides compared to the V3 Sequencing Kit.Sample Mixture Precision – Ex
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News
- Quantum-Si Highlights Significant Development Advancements for Proteus™ and Industry Leading Technology Pipeline at Investor & Analyst DayBusiness Wire
- Quantum-Si to Highlight Significant Proteus™ Platform Development Progress and Provide Insights into the Company's Industry Leading Technology Pipeline at Investor & Analyst Day [Yahoo! Finance]Yahoo! Finance
- Quantum-Si to Highlight Significant Proteus™ Platform Development Progress and Provide Insights into the Company’s Industry Leading Technology Pipeline at Investor & Analyst DayBusiness Wire
- Quantum-Si (NASDAQ:QSI) had its "sell (d-)" rating reaffirmed by analysts at <a style="font-weight:bold" href="https://weissratings.com/">Weiss Ratings</a>.MarketBeat
- Quantum-Si (NASDAQ:QSI) had its "sell (e+)" rating reaffirmed by analysts at <a style="font-weight:bold" href="https://weissratings.com/">Weiss Ratings</a>.MarketBeat
QSI
Earnings
- 11/5/25 - In-Line
QSI
Sec Filings
- 11/20/25 - Form 8-K
- 11/5/25 - Form 10-Q
- 11/5/25 - Form 8-K
- QSI's page on the SEC website