[8-K] Quantum-Si Inc Reports Material Event

Rhea-AI Filing Summary

Quantum-Si Incorporated (QSI) filed a Form 8-K to furnish materials from its Investor & Analyst Day held on November 19, 2025. The company used this event to present slides and a webcast replay that provide updates and summaries of its business, which are available in the Investors section of its website and attached as Exhibit 99.1. The company states that the information in this report, including Exhibit 99.1, is being furnished rather than filed under the Exchange Act and is not deemed incorporated into other securities filings unless specifically referenced.

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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 OR 15(d) of the

Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): November 19, 2025

QUANTUM-SI INCORPORATED

(Exact name of registrant as specified in its charter)

Delaware			001-39486			85-1388175
(State or other jurisdiction of incorporation)			(Commission File Number)			(IRS Employer Identification No.)

29 Business Park Drive
Branford, Connecticut						06405
(Address of principal executive offices)						(Zip Code)

Registrant’s telephone number, including area code: (866) 688-7374

N/A

(Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

o			Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
o			Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
o			Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
o			Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of each class

Trading Symbol(s)

Name of each exchange on which registered

Class A common stock, par value $0.0001 per share

QSI

The Nasdaq Stock Market LLC

Redeemable warrants, each whole warrant exercisable for one share of Class A common stock, each at an exercise price of $11.50 per share

QSIAW

The Nasdaq Stock Market LLC

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company      o

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. o

Item 7.01     Regulation FD Disclosure.

From time to time, Quantum-Si Incorporated (the “Company”) presents and/or distributes slides and presentations to the investment community to provide updates and summaries of its business. On November 19, 2025, the Company gave a presentation at its Investor & Analyst Day. The presentation slides and a replay of the webcast are available on the “Investors” section of the Company’s website at https://ir.quantum-si.com. This presentation is also furnished as Exhibit 99.1 to this Current Report on Form 8-K.

The information in this Item 7.01, including Exhibit 99.1, is being furnished and shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities of that Section, nor shall it be deemed incorporated by reference into any registration statement or other filing under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such filing. The furnishing of the information in this Item 7.01 and Exhibit 99.1 is not intended to, and does not, constitute a determination or admission by the Company that the information in this report is material or complete, or that investors should consider this information before making an investment decision with respect to any security of the Company or any of its affiliates.

Item 9.01      Financial Statements and Exhibits.

(d)Exhibits.

Exhibit No.						Description
99.1						Investor & Analyst Day Presentation of Quantum-Si Incorporated dated November 19, 2025
104						Cover Page Interactive Data File (embedded within the Inline XBRL document)

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

			QUANTUM-SI INCORPORATED
			By:			/s/ Jeffry Keyes
			Name:			Jeffry Keyes
			Title:			Chief Financial Officer
Date: November 20, 2025

FAQ

What did Quantum-Si (QSI) announce in this Form 8-K?

Quantum-Si Incorporated reported that it gave a presentation at its Investor & Analyst Day on November 19, 2025, and is furnishing the presentation materials as part of this Form 8-K.

Where can investors find Quantum-Si's Investor & Analyst Day slides and webcast?

The presentation slides and a replay of the webcast are available on the “Investors” section of Quantum-Si's website at https://ir.quantum-si.com.

What is Exhibit 99.1 in Quantum-Si's November 2025 8-K?

Exhibit 99.1 is the Investor & Analyst Day Presentation of Quantum-Si Incorporated dated November 19, 2025, which contains the slides used at the event.

Is the information in Quantum-Si's Investor & Analyst Day 8-K considered filed with the SEC?

No. Quantum-Si states that the information in Item 7.01, including Exhibit 99.1, is being furnished and shall not be deemed “filed” for purposes of Section 18 of the Exchange Act.

Does Quantum-Si consider the Investor & Analyst Day information to be material or complete?

Quantum-Si notes that furnishing this information is not intended to constitute a determination or admission that it is material or complete for investment decisions.

Who signed Quantum-Si's November 2025 Form 8-K related to the Investor & Analyst Day?

The Form 8-K was signed on behalf of Quantum-Si Incorporated by Jeffry Keyes, the company’s Chief Financial Officer, dated November 20, 2025.