$QSI SEC Filings

Filed On	Filing
15 Oct 2026	8-K: Other Events Quantum-Si Regains Compliance with Nasdaq Minimum Bid Price Requirement BRANFORD, Conn., Oct. 15, 2026 (GLOBE NEWSWIRE) — Quantum-Si Incorporated (Nasdaq: QSI) (“Quantum-Si,” “QSI,” or the “Company”), a proteomics company redefining prot...
08 Oct 2026	8-K: Regulation FD Disclosure Quantum-Si Demonstrates Detection of 19 Amino Acids in Proteus™ Development Program Company is working to deploy 19-amino-acid detection into a developmental sequencing kit and remains confident in demonstrating detection of all 20 amino...
29 Sep 2026	8-K: Regulation FD Disclosure 1 ProteusTM The Future of Single-molecule Protein Sequencing World HUPO 2026 Exhibit 99.1
23 Sep 2026	Form 4: Hawkins Jeffrey Alan, Director Sold 20,143 shares ($15.2K) · Sold 9,709 shares ($7.39K)
23 Sep 2026	Form 4: Keyes Jeffry R., Chief Financial Officer Sold 5,172 shares ($3.91K) · Sold 2,493 shares ($1.9K)
23 Sep 2026	Form 4: LaPointe Christian, GC & Corp. Secretary Sold 9,795 shares ($7.4K) · Sold 4,721 shares ($3.59K)
23 Sep 2026	144
23 Sep 2026	144
23 Sep 2026	144
28 Aug 2026	SCHEDULE 13D/A
13 Aug 2026	10-Q
13 Aug 2026	8-K: Results of Operations and Financial Condition
29 Jul 2026	SCHEDULE 13G/A
24 Jul 2026	8-K: Notice of Delisting or Failure to Satisfy a Listing Rule
24 Jun 2026	Form 4: LaPointe Christian, GC & Corp. Secretary Sold 7,794 shares ($7.46K) · Sold 7,794 shares ($7.01K)
24 Jun 2026	Form 4: Keyes Jeffry R., Chief Financial Officer Sold 4,116 shares ($3.94K) · Sold 4,117 shares ($3.7K)
24 Jun 2026	Form 4: Vieceli John S., Chief Product Officer Sold 15,111 shares ($14.5K) · Sold 15,112 shares ($13.6K)
24 Jun 2026	Form 4: Hawkins Jeffrey Alan, Director Sold 11,310 shares ($10.8K) · Sold 11,311 shares ($10.2K)
24 Jun 2026	144
24 Jun 2026	144

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