QSI affiliate files Form 144 to sell shares

Quantum-Si (QSI) affiliate filed a Form 144 reporting proposed sales of Class A common stock.

Rhea-AI Filing Summary

Quantum-Si (QSI) affiliate filed a Form 144 reporting proposed sales of Class A common stock. The filing lists a Restricted Stock Unit vesting of 59,609 shares on 06/20/2026 described as equity compensation for services. It also records a prior sale of 167,424 shares on 04/20/2026 by Jeffrey Hawkins.

Insights

Corporate Governance Analyst

Form 144 shows an affiliated holder notifying a proposed sale and recent dispositions.

The filing lists a Restricted Stock Unit vesting of 59,609 shares on 06/20/2026 and reports a prior sale of 167,424 shares on 04/20/2026 by Jeffrey Hawkins. This is a standard insider notice of sale by an affiliate.

Cash‑flow treatment and exact planned sale mechanics are not stated in the excerpt; subsequent filings or broker disclosures would show timing and methods if and when sales occur.

Key Figures

RSU vesting: 59,609 shares Recent sale (past 3 months): 167,424 shares Listed figure: 197,822,663

3 metrics

RSU vesting 59,609 shares Restricted Stock Unit Vesting on 06/20/2026

Recent sale (past 3 months) 167,424 shares Sold by Jeffrey Hawkins on 04/20/2026

Listed figure 197,822,663 Number appearing alongside 06/22/2026 and NASDAQ in the securities info

Key Terms

Form 144, Restricted Stock Unit Vesting, Equity compensation for services rendered

3 terms

Form 144 regulatory

"Filer Information | 144: Filer Information"

Form 144 is a document that investors must file with the government when they plan to sell a large number of shares of a company's stock. It helps ensure transparency so everyone knows how many shares are being sold and when, which can impact the stock's price.

Restricted Stock Unit Vesting financial

"Restricted Stock Unit Vesting | Quantum-Si Incorporated"

Equity compensation for services rendered financial

"Equity compensation for services rendered"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What did the QSI Form 144 disclose about upcoming share sales?

It discloses a proposed sale by an affiliate and lists 59,609 RSUs vesting on 06/20/2026. The filing records a prior sale of 167,424 shares on 04/20/2026 by Jeffrey Hawkins and identifies the securities class as Class A common stock.

How many RSUs vested per the QSI filing and when?

The filing shows a Restricted Stock Unit vesting of 59,609 shares on 06/20/2026. The RSUs are described as equity compensation for services rendered; no additional vesting schedule or conversion details appear in the provided excerpt.

Who is named as having sold shares recently in the QSI Form 144?

The excerpt names Jeffrey Hawkins as selling 167,424 shares on 04/20/2026. The entry lists Morgan Stanley Smith Barney LLC as the broker address associated with the transaction in the filing excerpt.

Does the Form 144 state how sale proceeds will be used?

No. The provided excerpt does not state the use of proceeds or which party will receive cash. It lists the securities, vesting of RSUs, and a recent disposition but contains no proceeds allocation language.

What class of Quantum‑Si shares are involved in the Form 144?

The filing identifies the securities as Class A Common Stock listed with NASDAQ. The excerpt pairs that class label with the listed transactions and the RSU vesting entry on the specified dates.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 06/24/2026 - 08:00 PM Learn about SEC filing dates

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0001505034
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	Quantum-Si Inc
SEC File Number	001-39486
Address of Issuer	29 BUSINESS PARK DRIVE BRANFORD CONNECTICUT 06405
Phone	(203) 458-7100
Name of Person for Whose Account the Securities are To Be Sold	Hawkins Jeffrey Alan
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Officer
Relationship to Issuer	Director

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Class A Common Stock	Morgan Stanley Smith Barney LLC 1 New York Plaza 38th Floor New York NY 10004	22621	20996.81	197822663	06/22/2026	NASDAQ

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Class A Common Stock	06/20/2026	Restricted Stock Unit Vesting	Quantum-Si Incorporated			59609	06/20/2026	Equity compensation for services rendered

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
Jeffrey Hawkins c/o Morgan Stanley Smith Barney LLC 1 New York Plaza 38th Floor New York NY 10004	Class A Common Stock	04/20/2026	167424	167507.71

144: Remarks and Signature

Remarks	Shares sold to cover tax withholding obligations in connection with the vesting of restricted stock units. The sale is mandated by the Issuers election to require the satisfaction of tax withholding obligations through a sell to cover transaction and does not represent a discretionary trade by the reporting person.
Date of Notice	06/24/2026
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	/s/ Christian LaPointe, Ph.D., Attorney-in-Fact
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)