STOCK TITAN

[Form 4] Quantum-Si Incorporated Insider Trading Activity

Filing Impact
(Low)
Filing Sentiment
(Negative)
Form Type
4
Rhea-AI Filing Summary

Quantum-Si Incorporated (QSI) Form 4 – insider activity snapshot

Chief Product Officer John S. Vieceli reported one transaction dated 06/23/2025. He disposed of 21,923 Class A common shares at a weighted-average price of $1.6139 through the company’s mandatory “sell-to-cover” program that automatically sells shares to satisfy federal, state and local tax withholding triggered by the vesting of previously granted restricted stock units. The officer had no discretion over the timing or volume of the sale, which generated roughly $35,000 in gross proceeds based on the reported average price range of $1.55-$1.68.

After the sale, Vieceli maintains direct ownership of 842,586 shares, retaining more than 97 % of his pre-transaction stake. No derivative securities were acquired or disposed of, and no additional open-market activity is disclosed. Because the disposition was administrative and pre-arranged at grant, it is generally viewed as neutral from a sentiment standpoint, though investors often track any insider sales for potential signals of executive confidence.

Quantum-Si Incorporated (QSI) Form 4 – riepilogo attività insider

Il Chief Product Officer John S. Vieceli ha riportato una transazione datata 23/06/2025. Ha venduto 21.923 azioni ordinarie di classe A a un prezzo medio ponderato di $1,6139 tramite il programma obbligatorio “sell-to-cover” della società, che vende automaticamente azioni per coprire le trattenute fiscali federali, statali e locali generate dal consolidamento di unità di azioni ristrette precedentemente assegnate. L’ufficiale non ha avuto discrezionalità sul momento o sul volume della vendita, che ha generato circa 35.000 dollari di ricavi lordi basati sul prezzo medio riportato tra 1,55 e 1,68 dollari.

Dopo la vendita, Vieceli mantiene la proprietà diretta di 842.586 azioni, conservando oltre il 97% della sua partecipazione precedente alla transazione. Non sono stati acquisiti o ceduti strumenti derivati e non sono state divulgate altre attività di mercato aperto. Poiché la cessione è stata amministrativa e predefinita al momento della concessione, è generalmente considerata neutrale dal punto di vista del sentiment, anche se gli investitori monitorano spesso le vendite interne per eventuali segnali di fiducia da parte dei dirigenti.

Quantum-Si Incorporated (QSI) Formulario 4 – resumen de actividad de insiders

El Director de Producto John S. Vieceli reportó una transacción fechada el 23/06/2025. Dispone de 21.923 acciones ordinarias Clase A a un precio promedio ponderado de $1.6139 a través del programa obligatorio de “venta para cubrir” de la empresa, que vende automáticamente acciones para cubrir las retenciones fiscales federales, estatales y locales generadas por la consolidación de unidades restringidas de acciones previamente otorgadas. El ejecutivo no tuvo discreción sobre el momento ni el volumen de la venta, que generó aproximadamente $35,000 en ingresos brutos basados en el rango de precio promedio reportado de $1.55 a $1.68.

Tras la venta, Vieceli mantiene la propiedad directa de 842,586 acciones, conservando más del 97% de su participación previa a la transacción. No se adquirieron ni dispusieron valores derivados y no se divulgan otras actividades en el mercado abierto. Dado que la disposición fue administrativa y preestablecida en la concesión, generalmente se considera neutral desde el punto de vista del sentimiento, aunque los inversores suelen seguir cualquier venta interna en busca de posibles señales de confianza ejecutiva.

Quantum-Si Incorporated (QSI) Form 4 – 내부자 활동 요약

최고 제품 책임자 John S. Vieceli는 2025년 6월 23일자로 한 건의 거래를 보고했습니다. 그는 회사의 의무적인 “sell-to-cover” 프로그램을 통해 가중 평균 가격 $1.6139에 21,923주의 클래스 A 보통주를 처분했습니다. 이 프로그램은 이전에 부여된 제한 주식 단위의 권리 확정으로 인해 발생하는 연방, 주 및 지방 세금 원천징수를 충족하기 위해 자동으로 주식을 판매합니다. 임원은 판매 시기나 수량에 대해 재량권이 없었으며, 보고된 평균 가격 범위 $1.55-$1.68를 기준으로 약 $35,000의 총 수익을 창출했습니다.

판매 후 Vieceli는 842,586주를 직접 보유하며 거래 전 지분의 97% 이상을 유지하고 있습니다. 파생 증권의 취득 또는 처분은 없었으며, 추가적인 공개 시장 활동도 보고되지 않았습니다. 처분이 행정적이고 부여 시에 미리 정해진 것이므로, 일반적으로 투자 심리 측면에서 중립적으로 간주되지만, 투자자들은 임원 매도를 경영진 신뢰의 잠재적 신호로 주시하는 경우가 많습니다.

Quantum-Si Incorporated (QSI) Formulaire 4 – aperçu de l’activité des initiés

Le Chief Product Officer John S. Vieceli a déclaré une transaction datée du 23/06/2025. Il a cédé 21 923 actions ordinaires de classe A à un prix moyen pondéré de 1,6139 $ via le programme obligatoire de « vente pour couvrir » de la société, qui vend automatiquement des actions pour satisfaire les retenues fiscales fédérales, étatiques et locales déclenchées par l’acquisition des unités d’actions restreintes précédemment attribuées. Le dirigeant n’avait aucun contrôle sur le moment ou le volume de la vente, qui a généré environ 35 000 $ de produits bruts, basés sur la fourchette de prix moyenne déclarée de 1,55 $ à 1,68 $.

Après la vente, Vieceli conserve la propriété directe de 842 586 actions, conservant plus de 97 % de sa participation avant la transaction. Aucun titre dérivé n’a été acquis ou cédé, et aucune autre activité sur le marché ouvert n’a été divulguée. Étant donné que la cession était administrative et préalablement arrangée lors de l’attribution, elle est généralement considérée comme neutre du point de vue du sentiment, bien que les investisseurs surveillent souvent les ventes d’initiés pour détecter d’éventuels signes de confiance de la part des dirigeants.

Quantum-Si Incorporated (QSI) Form 4 – Überblick über Insider-Aktivitäten

Chief Product Officer John S. Vieceli meldete eine Transaktion vom 23.06.2025. Er veräußerte 21.923 Stammaktien der Klasse A zu einem gewichteten Durchschnittspreis von $1,6139 über das verpflichtende „Sell-to-Cover“-Programm des Unternehmens, das automatisch Aktien verkauft, um die bundesstaatlichen, staatlichen und lokalen Steuerabzüge zu erfüllen, die durch die Vesting von zuvor gewährten Restricted Stock Units ausgelöst werden. Der Manager hatte keine Kontrolle über den Zeitpunkt oder das Volumen des Verkaufs, der basierend auf dem gemeldeten durchschnittlichen Preisbereich von $1,55 bis $1,68 etwa 35.000 $ Bruttoerlös generierte.

Nach dem Verkauf hält Vieceli weiterhin direkt 842.586 Aktien und behält damit mehr als 97 % seines Anteils vor der Transaktion. Es wurden keine Derivate erworben oder veräußert, und keine weiteren Aktivitäten am offenen Markt wurden offengelegt. Da die Veräußerung administrativ und vorab bei der Gewährung festgelegt wurde, wird sie im Allgemeinen als neutral hinsichtlich der Stimmung betrachtet, obwohl Investoren Insiderverkäufe oft zur Einschätzung des Vertrauens der Führungsebene beobachten.

Positive
  • Executive retains 842,586 shares after the transaction, indicating continued long-term alignment with shareholders.
Negative
  • Insider sale of 21,923 shares may be viewed negatively by some investors despite being mandatory for tax withholding.

Insights

TL;DR: Mandatory sell-to-cover; minor share count; executive retains large stake—market impact likely neutral.

The 21,923-share sale represents less than 3 % of John Vieceli’s holdings and was executed solely to cover tax obligations tied to RSU vesting. Such pre-programmed transactions carry little informational value about management’s outlook. Post-sale ownership of 842,586 shares suggests the CPO remains materially aligned with shareholders. No options or warrants were exercised or forfeited, and the filing shows no pattern of discretionary selling. Given QSI’s recent trading volume, the dollar value is immaterial and should not influence valuation models or liquidity assessments.

TL;DR: Administrative, Rule 10b5-1–style tax sale; governance risk unchanged.

The filing states the sale is mandated by Quantum-Si’s internal sell-to-cover policy, which mitigates selective disclosure and front-running concerns. Absence of discretionary trades reduces the possibility of insider-driven information asymmetry. The executive’s continued sizable holding upholds alignment incentives. From a governance lens, this event neither enhances nor deteriorates risk posture; therefore, I classify it as neutral.

Quantum-Si Incorporated (QSI) Form 4 – riepilogo attività insider

Il Chief Product Officer John S. Vieceli ha riportato una transazione datata 23/06/2025. Ha venduto 21.923 azioni ordinarie di classe A a un prezzo medio ponderato di $1,6139 tramite il programma obbligatorio “sell-to-cover” della società, che vende automaticamente azioni per coprire le trattenute fiscali federali, statali e locali generate dal consolidamento di unità di azioni ristrette precedentemente assegnate. L’ufficiale non ha avuto discrezionalità sul momento o sul volume della vendita, che ha generato circa 35.000 dollari di ricavi lordi basati sul prezzo medio riportato tra 1,55 e 1,68 dollari.

Dopo la vendita, Vieceli mantiene la proprietà diretta di 842.586 azioni, conservando oltre il 97% della sua partecipazione precedente alla transazione. Non sono stati acquisiti o ceduti strumenti derivati e non sono state divulgate altre attività di mercato aperto. Poiché la cessione è stata amministrativa e predefinita al momento della concessione, è generalmente considerata neutrale dal punto di vista del sentiment, anche se gli investitori monitorano spesso le vendite interne per eventuali segnali di fiducia da parte dei dirigenti.

Quantum-Si Incorporated (QSI) Formulario 4 – resumen de actividad de insiders

El Director de Producto John S. Vieceli reportó una transacción fechada el 23/06/2025. Dispone de 21.923 acciones ordinarias Clase A a un precio promedio ponderado de $1.6139 a través del programa obligatorio de “venta para cubrir” de la empresa, que vende automáticamente acciones para cubrir las retenciones fiscales federales, estatales y locales generadas por la consolidación de unidades restringidas de acciones previamente otorgadas. El ejecutivo no tuvo discreción sobre el momento ni el volumen de la venta, que generó aproximadamente $35,000 en ingresos brutos basados en el rango de precio promedio reportado de $1.55 a $1.68.

Tras la venta, Vieceli mantiene la propiedad directa de 842,586 acciones, conservando más del 97% de su participación previa a la transacción. No se adquirieron ni dispusieron valores derivados y no se divulgan otras actividades en el mercado abierto. Dado que la disposición fue administrativa y preestablecida en la concesión, generalmente se considera neutral desde el punto de vista del sentimiento, aunque los inversores suelen seguir cualquier venta interna en busca de posibles señales de confianza ejecutiva.

Quantum-Si Incorporated (QSI) Form 4 – 내부자 활동 요약

최고 제품 책임자 John S. Vieceli는 2025년 6월 23일자로 한 건의 거래를 보고했습니다. 그는 회사의 의무적인 “sell-to-cover” 프로그램을 통해 가중 평균 가격 $1.6139에 21,923주의 클래스 A 보통주를 처분했습니다. 이 프로그램은 이전에 부여된 제한 주식 단위의 권리 확정으로 인해 발생하는 연방, 주 및 지방 세금 원천징수를 충족하기 위해 자동으로 주식을 판매합니다. 임원은 판매 시기나 수량에 대해 재량권이 없었으며, 보고된 평균 가격 범위 $1.55-$1.68를 기준으로 약 $35,000의 총 수익을 창출했습니다.

판매 후 Vieceli는 842,586주를 직접 보유하며 거래 전 지분의 97% 이상을 유지하고 있습니다. 파생 증권의 취득 또는 처분은 없었으며, 추가적인 공개 시장 활동도 보고되지 않았습니다. 처분이 행정적이고 부여 시에 미리 정해진 것이므로, 일반적으로 투자 심리 측면에서 중립적으로 간주되지만, 투자자들은 임원 매도를 경영진 신뢰의 잠재적 신호로 주시하는 경우가 많습니다.

Quantum-Si Incorporated (QSI) Formulaire 4 – aperçu de l’activité des initiés

Le Chief Product Officer John S. Vieceli a déclaré une transaction datée du 23/06/2025. Il a cédé 21 923 actions ordinaires de classe A à un prix moyen pondéré de 1,6139 $ via le programme obligatoire de « vente pour couvrir » de la société, qui vend automatiquement des actions pour satisfaire les retenues fiscales fédérales, étatiques et locales déclenchées par l’acquisition des unités d’actions restreintes précédemment attribuées. Le dirigeant n’avait aucun contrôle sur le moment ou le volume de la vente, qui a généré environ 35 000 $ de produits bruts, basés sur la fourchette de prix moyenne déclarée de 1,55 $ à 1,68 $.

Après la vente, Vieceli conserve la propriété directe de 842 586 actions, conservant plus de 97 % de sa participation avant la transaction. Aucun titre dérivé n’a été acquis ou cédé, et aucune autre activité sur le marché ouvert n’a été divulguée. Étant donné que la cession était administrative et préalablement arrangée lors de l’attribution, elle est généralement considérée comme neutre du point de vue du sentiment, bien que les investisseurs surveillent souvent les ventes d’initiés pour détecter d’éventuels signes de confiance de la part des dirigeants.

Quantum-Si Incorporated (QSI) Form 4 – Überblick über Insider-Aktivitäten

Chief Product Officer John S. Vieceli meldete eine Transaktion vom 23.06.2025. Er veräußerte 21.923 Stammaktien der Klasse A zu einem gewichteten Durchschnittspreis von $1,6139 über das verpflichtende „Sell-to-Cover“-Programm des Unternehmens, das automatisch Aktien verkauft, um die bundesstaatlichen, staatlichen und lokalen Steuerabzüge zu erfüllen, die durch die Vesting von zuvor gewährten Restricted Stock Units ausgelöst werden. Der Manager hatte keine Kontrolle über den Zeitpunkt oder das Volumen des Verkaufs, der basierend auf dem gemeldeten durchschnittlichen Preisbereich von $1,55 bis $1,68 etwa 35.000 $ Bruttoerlös generierte.

Nach dem Verkauf hält Vieceli weiterhin direkt 842.586 Aktien und behält damit mehr als 97 % seines Anteils vor der Transaktion. Es wurden keine Derivate erworben oder veräußert, und keine weiteren Aktivitäten am offenen Markt wurden offengelegt. Da die Veräußerung administrativ und vorab bei der Gewährung festgelegt wurde, wird sie im Allgemeinen als neutral hinsichtlich der Stimmung betrachtet, obwohl Investoren Insiderverkäufe oft zur Einschätzung des Vertrauens der Führungsebene beobachten.

SEC Form 4
FORM 4 UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
OMB APPROVAL
OMB Number: 3235-0287
Estimated average burden
hours per response: 0.5
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.
1. Name and Address of Reporting Person*
Vieceli John S.

(Last) (First) (Middle)
C/O QUANTUM-SI INCORPORATED
29 BUSINESS PARK DRIVE

(Street)
BRANFORD CT 06405

(City) (State) (Zip)
2. Issuer Name and Ticker or Trading Symbol
Quantum-Si Inc [ QSI ]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
Director 10% Owner
X Officer (give title below) Other (specify below)
Chief Product Officer
3. Date of Earliest Transaction (Month/Day/Year)
06/23/2025
4. If Amendment, Date of Original Filed (Month/Day/Year)
6. Individual or Joint/Group Filing (Check Applicable Line)
X Form filed by One Reporting Person
Form filed by More than One Reporting Person
Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
Code V Amount (A) or (D) Price
Class A Common Stock 06/23/2025 S(1) 21,923 D $1.6139(2) 842,586 D
Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 6. Date Exercisable and Expiration Date (Month/Day/Year) 7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
Explanation of Responses:
1. Represents shares sold pursuant to a mandatory Quantum-Si sell-to-cover provision for required federal, state and local withholding taxes in connection with the vesting of previously granted restricted stock units. Individual is not able to alter this mandatory sell-to-cover provision that is enacted at the grant date of the related restricted stock unit award.
2. Represents the weighted average sales price per share. The shares sold at prices ranging from $1.55 to $1.68 per share. Full information regarding the number of shares sold at each price shall be provided upon request to the staff of the U.S. Securities and Exchange Commission, the Issuer, or a security holder of the Issuer.
/s/ Christian LaPointe, Ph.D., Attorney-in-Fact. 06/24/2025
** Signature of Reporting Person Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

How many Quantum-Si (QSI) shares did John Vieceli sell?

21,923 Class A common shares were sold on 06/23/2025.

What price did the QSI shares sell for in the Form 4?

The weighted-average sale price was $1.6139 per share, within a $1.55-$1.68 range.

Why were the Quantum-Si shares sold?

The sale was a mandatory sell-to-cover to satisfy federal, state and local tax withholding on vested RSUs.

How many QSI shares does the executive still own after the sale?

John Vieceli directly holds 842,586 shares following the reported transaction.

Does this Form 4 indicate any derivative security activity?

No; the filing reports no acquisitions or dispositions of options, warrants or other derivatives.
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