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Nasdaq · USD

QSI

Quantum-Si Inc

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Tapewire entity
6440
SEC CIK
0001816431
Parsed reports
167

Last 12 months

Inside the activity.

2 purchase rows · 30 sale rows

Disclosed non-derivative P/S rows, by transaction month. Includes amendments and private transactions.
Monthly counts
MonthPurchasesSales
Nov 202500
Dec 202504
Jan 202600
Feb 202600
Mar 202628
Apr 202604
May 202600
Jun 202608
Jul 202600
Aug 202600
Sep 202606
Oct 202600

Latest available

Insider transactions

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Purchases/sales include open-market and private transactions. Plan disclosure applies to the filing; individual rows may differ. “Not disclosed” is not “unplanned.”

The cutoff filters transaction history only. Company summaries and owner relationships show the latest available disclosures. Parser corrections can improve historical records.

Transaction dateOwner / reported roleActivity / securityShares / unitsReported priceReported valueDetails
September 22, 2026 Filed Sep 23, 2026 23:51 UTC
Hawkins Jeffrey AlanDirector · President & CEO
SaleClass A Common Stock 9,709 $0.76 $7,386.61
Disclosure

SEC source: 0001140361-26-037481 · form4.xml · nonDerivative · entry 2

Hawkins Jeffrey Alan · CIK 0001505034 · Director · President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,639,950

F1 · kind: 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.

F3 · price: Represents the weighted average sales price per share. The shares sold at prices ranging from $0.7511 to $0.7779 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.

Read SEC document
September 22, 2026 Filed Sep 23, 2026 23:45 UTC
Keyes Jeffry R.Chief Financial Officer
SaleClass A Common Stock 2,493 $0.76 $1,896.67
Disclosure

SEC source: 0001140361-26-037478 · form4.xml · nonDerivative · entry 2

Keyes Jeffry R. · CIK 0001557736 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,716,684

F1 · kind: 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.

F3 · price: Represents the weighted average sales price per share. The shares sold at prices ranging from $0.7511 to $0.7779 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.

Read SEC document
September 22, 2026 Filed Sep 23, 2026 23:40 UTC
LaPointe ChristianGC & Corp. Secretary
SaleClass A Common Stock 4,721 $0.76 $3,591.74
Disclosure

SEC source: 0001140361-26-037476 · form4.xml · nonDerivative · entry 2

LaPointe Christian · CIK 0001856912 · GC & Corp. Secretary

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,167,913

F1 · kind: 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.

F3 · price: Represents the weighted average sales price per share. The shares sold at prices ranging from $0.7511 to $0.7779 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.

Read SEC document
September 21, 2026 Filed Sep 23, 2026 23:51 UTC
Hawkins Jeffrey AlanDirector · President & CEO
SaleClass A Common Stock 20,143 $0.76 $15,224.08
Disclosure

SEC source: 0001140361-26-037481 · form4.xml · nonDerivative · entry 1

Hawkins Jeffrey Alan · CIK 0001505034 · Director · President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,649,659

F1 · kind: 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.

F2 · price: Represents the weighted average sales price per share. The shares sold at prices ranging from $0.75 to $0.762 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.

Read SEC document
September 21, 2026 Filed Sep 23, 2026 23:45 UTC
Keyes Jeffry R.Chief Financial Officer
SaleClass A Common Stock 5,172 $0.76 $3,909.00
Disclosure

SEC source: 0001140361-26-037478 · form4.xml · nonDerivative · entry 1

Keyes Jeffry R. · CIK 0001557736 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,719,177

F1 · kind: 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.

F2 · price: Represents the weighted average sales price per share. The shares sold at prices ranging from $0.75 to $0.762 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.

Read SEC document
September 21, 2026 Filed Sep 23, 2026 23:40 UTC
LaPointe ChristianGC & Corp. Secretary
SaleClass A Common Stock 9,795 $0.76 $7,403.06
Disclosure

SEC source: 0001140361-26-037476 · form4.xml · nonDerivative · entry 1

LaPointe Christian · CIK 0001856912 · GC & Corp. Secretary

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,172,634

F1 · kind: 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.

F2 · price: Represents the weighted average sales price per share. The shares sold at prices ranging from $0.75 to $0.762 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.

Read SEC document
June 23, 2026 Filed Jun 25, 2026 00:17 UTC
Vieceli John S.Chief Product Officer
SaleClass A Common Stock 15,112 $0.90 $13,585.69
Disclosure

SEC source: 0001140361-26-026287 · form4.xml · nonDerivative · entry 2

Vieceli John S. · CIK 0002032947 · Chief Product Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,140,434

F1 · kind: 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.

F3 · price: Represents the weighted average sales price per share. The shares sold at prices ranging from $0.88 to $0.9291 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.

Read SEC document
June 23, 2026 Filed Jun 25, 2026 00:12 UTC
Hawkins Jeffrey AlanDirector · President & CEO
SaleClass A Common Stock 11,311 $0.90 $10,168.59
Disclosure

SEC source: 0001140361-26-026285 · form4.xml · nonDerivative · entry 2

Hawkins Jeffrey Alan · CIK 0001505034 · Director · President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,669,802

F1 · kind: 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.

F3 · price: Represents the weighted average sales price per share. The shares sold at prices ranging from $0.88 to $0.9291 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.

Read SEC document
June 23, 2026 Filed Jun 25, 2026 00:31 UTC
LaPointe ChristianGC & Corp. Secretary
SaleClass A Common Stock 7,794 $0.90 $7,006.81
Disclosure

SEC source: 0001140361-26-026294 · form4.xml · nonDerivative · entry 2

LaPointe Christian · CIK 0001856912 · GC & Corp. Secretary

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,182,429

F1 · kind: 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.

F3 · price: Represents the weighted average sales price per share. The shares sold at prices ranging from $0.88 to $0.9291 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.

Read SEC document
June 23, 2026 Filed Jun 25, 2026 00:23 UTC
Keyes Jeffry R.Chief Financial Officer
SaleClass A Common Stock 4,117 $0.90 $3,701.18
Disclosure

SEC source: 0001140361-26-026290 · form4.xml · nonDerivative · entry 2

Keyes Jeffry R. · CIK 0001557736 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,724,349

F1 · kind: 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.

F3 · price: Represents the weighted average sales price per share. The shares sold at prices ranging from $0.88 to $0.9291 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.

Read SEC document
June 22, 2026 Filed Jun 25, 2026 00:17 UTC
Vieceli John S.Chief Product Officer
SaleClass A Common Stock 15,111 $0.96 $14,467.27
Disclosure

SEC source: 0001140361-26-026287 · form4.xml · nonDerivative · entry 1

Vieceli John S. · CIK 0002032947 · Chief Product Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,155,546

F1 · kind: 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.

F2 · price: Represents the weighted average sales price per share. The shares sold at prices ranging from $0.9212 to $1.005 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.

Read SEC document
June 22, 2026 Filed Jun 25, 2026 00:12 UTC
Hawkins Jeffrey AlanDirector · President & CEO
SaleClass A Common Stock 11,310 $0.96 $10,828.19
Disclosure

SEC source: 0001140361-26-026285 · form4.xml · nonDerivative · entry 1

Hawkins Jeffrey Alan · CIK 0001505034 · Director · President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,681,113

F1 · kind: 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.

F2 · price: Represents the weighted average sales price per share. The shares sold at prices ranging from $0.9212 to $1.005 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.

Read SEC document
June 22, 2026 Filed Jun 25, 2026 00:31 UTC
LaPointe ChristianGC & Corp. Secretary
SaleClass A Common Stock 7,794 $0.96 $7,461.98
Disclosure

SEC source: 0001140361-26-026294 · form4.xml · nonDerivative · entry 1

LaPointe Christian · CIK 0001856912 · GC & Corp. Secretary

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,190,223

F1 · kind: 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.

F2 · price: Represents the weighted average sales price per share. The shares sold at prices ranging from $0.9212 to $1.005 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.

Read SEC document
June 22, 2026 Filed Jun 25, 2026 00:23 UTC
Keyes Jeffry R.Chief Financial Officer
SaleClass A Common Stock 4,116 $0.96 $3,940.66
Disclosure

SEC source: 0001140361-26-026290 · form4.xml · nonDerivative · entry 1

Keyes Jeffry R. · CIK 0001557736 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,728,466

F1 · kind: 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.

F2 · price: Represents the weighted average sales price per share. The shares sold at prices ranging from $0.9212 to $1.005 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.

Read SEC document
May 18, 2026 Filed May 20, 2026 20:05 UTC
ROTHBERG JONATHAN MDirector · 10% owner
GrantStock Option (right to buy) · Derivative 251,185 $0.00 Strike: $0.85 $0.00
Disclosure

SEC source: 0001140361-26-022237 · form4.xml · derivative · entry 11

ROTHBERG JONATHAN M · CIK 0001076352 · Director · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 251,185

Underlying: Class A Common Stock · 251,185 shares

Expires 2036-05-18

F2 · derivative.exercise_date: The shares underlying this option vest on the date of the Issuer's next regular annual stockholders meeting, subject to continued service through the applicable vesting date.

Read SEC document
May 18, 2026 Filed May 20, 2026 20:05 UTC
Dowdy PaulaDirector
GrantStock Option (right to buy) · Derivative 251,185 $0.00 Strike: $0.85 $0.00
Disclosure

SEC source: 0001140361-26-022239 · form4.xml · derivative · entry 2

Dowdy Paula · CIK 0002016312 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 251,185

Underlying: Class A Common Stock · 251,185 shares

Expires 2036-05-18

F1 · derivative.exercise_date: The shares underlying this option vest on the date of the Issuer's next regular annual stockholders meeting, subject to continued service through the applicable vesting date.

Read SEC document
May 18, 2026 Filed May 20, 2026 20:05 UTC
Makes BrigidDirector
GrantStock Option (right to buy) · Derivative 251,185 $0.00 Strike: $0.85 $0.00
Disclosure

SEC source: 0001140361-26-022240 · form4.xml · derivative · entry 2

Makes Brigid · CIK 0001375927 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 251,185

Underlying: Class A Common Stock · 251,185 shares

Expires 2036-05-18

F1 · derivative.exercise_date: The shares underlying this option vest on the date of the Issuer's next regular annual stockholders meeting, subject to continued service through the applicable vesting date.

Read SEC document
May 18, 2026 Filed May 20, 2026 20:05 UTC GrantStock Option (right to buy) · Derivative 251,185 $0.00 Strike: $0.85 $0.00
Disclosure

SEC source: 0001140361-26-022245 · form4.xml · derivative · entry 2

Fattori Ruth A · CIK 0001306826 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 251,185

Underlying: Class A Common Stock · 251,185 shares

Expires 2036-05-18

F1 · derivative.exercise_date: The shares underlying this option vest on the date of the Issuer's next regular annual stockholders meeting, subject to continued service through the applicable vesting date.

Read SEC document
May 18, 2026 Filed May 20, 2026 20:05 UTC
Jafri AmirDirector
GrantStock Option (right to buy) · Derivative 251,185 $0.00 Strike: $0.85 $0.00
Disclosure

SEC source: 0001140361-26-022244 · form4.xml · derivative · entry 2

Jafri Amir · CIK 0001994864 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 251,185

Underlying: Class A Common Stock · 251,185 shares

Expires 2036-05-18

F1 · derivative.exercise_date: The shares underlying this option vest on the date of the Issuer's next regular annual stockholders meeting, subject to continued service through the applicable vesting date.

Read SEC document
May 18, 2026 Filed May 20, 2026 20:05 UTC GrantStock Option (right to buy) · Derivative 251,185 $0.00 Strike: $0.85 $0.00
Disclosure

SEC source: 0001140361-26-022243 · form4.xml · derivative · entry 2

Kenny John P. · CIK 0001719325 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 251,185

Underlying: Class A Common Stock · 251,185 shares

Expires 2036-05-18

F1 · derivative.exercise_date: The shares underlying this option vest on the date of the Issuer's next regular annual stockholders meeting, subject to continued service through the applicable vesting date.

Read SEC document
May 18, 2026 Filed May 20, 2026 20:05 UTC
RAKIN KEVINDirector
GrantStock Option (right to buy) · Derivative 251,185 $0.00 Strike: $0.85 $0.00
Disclosure

SEC source: 0001140361-26-022238 · form4.xml · derivative · entry 3

RAKIN KEVIN · CIK 0001184421 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 251,185

Underlying: Class A Common Stock · 251,185 shares

Expires 2036-05-18

F3 · derivative.exercise_date: The shares underlying this option vest on the date of the Issuer's next regular annual stockholders meeting, subject to continued service through the applicable vesting date.

Read SEC document
May 18, 2026 Filed May 20, 2026 20:05 UTC
Mendel ScottDirector
GrantStock Option (right to buy) · Derivative 251,185 $0.00 Strike: $0.85 $0.00
Disclosure

SEC source: 0001140361-26-022242 · form4.xml · derivative · entry 2

Mendel Scott · CIK 0001515051 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 251,185

Underlying: Class A Common Stock · 251,185 shares

Expires 2036-05-18

F1 · derivative.exercise_date: The shares underlying this option vest on the date of the Issuer's next regular annual stockholders meeting, subject to continued service through the applicable vesting date.

Read SEC document
May 18, 2026 Filed May 20, 2026 20:05 UTC GrantStock Option (right to buy) · Derivative 251,185 $0.00 Strike: $0.85 $0.00
Disclosure

SEC source: 0001140361-26-022241 · form4.xml · derivative · entry 2

Kummeth Charles R. · CIK 0001534980 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 251,185

Underlying: Class A Common Stock · 251,185 shares

Expires 2036-05-18

F1 · derivative.exercise_date: The shares underlying this option vest on the date of the Issuer's next regular annual stockholders meeting, subject to continued service through the applicable vesting date.

Read SEC document
April 21, 2026 Filed Apr 22, 2026 21:02 UTC
Hawkins Jeffrey AlanDirector · President & CEO
SaleClass A Common Stock 83,712 $1.00 $83,293.44
Disclosure

SEC source: 0001140361-26-016152 · form4.xml · nonDerivative · entry 2

Hawkins Jeffrey Alan · CIK 0001505034 · Director · President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,692,423

F1 · kind: 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.

F3 · price: Represents the weighted average sales price per share. The shares sold at prices ranging from $0.9763 to $1.04 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.

Read SEC document
April 21, 2026 Filed Apr 22, 2026 21:09 UTC
Keyes Jeffry R.Chief Financial Officer
SaleClass A Common Stock 37,381 $1.00 $37,194.10
Disclosure

SEC source: 0001140361-26-016155 · form4.xml · nonDerivative · entry 2

Keyes Jeffry R. · CIK 0001557736 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,732,582

F1 · kind: 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.

F3 · price: Represents the weighted average sales price per share. The shares sold at prices ranging from $0.9763 to $1.04 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.

Read SEC document
April 20, 2026 Filed Apr 22, 2026 21:02 UTC
Hawkins Jeffrey AlanDirector · President & CEO
SaleClass A Common Stock 83,712 $1.01 $84,247.76
Disclosure

SEC source: 0001140361-26-016152 · form4.xml · nonDerivative · entry 1

Hawkins Jeffrey Alan · CIK 0001505034 · Director · President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,776,135

F1 · kind: 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.

F2 · price: Represents the weighted average sales price per share. The shares sold at prices ranging from $0.9811 to $1.05 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.

Read SEC document
April 20, 2026 Filed Apr 22, 2026 21:09 UTC
Keyes Jeffry R.Chief Financial Officer
SaleClass A Common Stock 37,382 $1.01 $37,621.24
Disclosure

SEC source: 0001140361-26-016155 · form4.xml · nonDerivative · entry 1

Keyes Jeffry R. · CIK 0001557736 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,769,963

F1 · kind: 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.

F2 · price: Represents the weighted average sales price per share. The shares sold at prices ranging from $0.9811 to $1.05 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.

Read SEC document
March 23, 2026 Filed Mar 24, 2026 22:55 UTC
Vieceli John S.Chief Product Officer
SaleClass A Common Stock 11,239 $0.83 $9,290.16
Disclosure

SEC source: 0001140361-26-010945 · form4.xml · nonDerivative · entry 2

Vieceli John S. · CIK 0002032947 · Chief Product Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,170,657

F1 · kind: 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.

F3 · price: Represents the weighted average sales price per share. The shares sold at prices ranging from $0.7973 to $0.8525 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.

Read SEC document
March 23, 2026 Filed Mar 24, 2026 23:02 UTC
Keyes Jeffry R.Chief Financial Officer
SaleClass A Common Stock 4,422 $0.83 $3,655.23
Disclosure

SEC source: 0001140361-26-010949 · form4.xml · nonDerivative · entry 2

Keyes Jeffry R. · CIK 0001557736 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,807,345

F1 · kind: 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.

F3 · price: Represents the weighted average sales price per share. The shares sold at prices ranging from $0.7973 to $0.8525 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.

Read SEC document
March 23, 2026 Filed Mar 24, 2026 22:55 UTC
LaPointe ChristianGC & Corp. Secretary
SaleClass A Common Stock 6,110 $0.83 $5,050.53
Disclosure

SEC source: 0001140361-26-010946 · form4.xml · nonDerivative · entry 2

LaPointe Christian · CIK 0001856912 · GC & Corp. Secretary

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,198,017

F1 · kind: 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.

F3 · price: Represents the weighted average sales price per share. The shares sold at prices ranging from $0.7973 to $0.8525 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.

Read SEC document
March 23, 2026 Filed Mar 24, 2026 22:49 UTC
Hawkins Jeffrey AlanDirector · President & CEO
SaleClass A Common Stock 12,149 $0.83 $10,042.36
Disclosure

SEC source: 0001140361-26-010941 · form4.xml · nonDerivative · entry 2

Hawkins Jeffrey Alan · CIK 0001505034 · Director · President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,859,847

F1 · kind: 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.

F3 · price: Represents the weighted average sales price per share. The shares sold at prices ranging from $0.7973 to $0.8525 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.

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March 20, 2026 Filed Mar 24, 2026 22:55 UTC
Vieceli John S.Chief Product Officer
SaleClass A Common Stock 10,758 $0.85 $9,126.01
Disclosure

SEC source: 0001140361-26-010945 · form4.xml · nonDerivative · entry 1

Vieceli John S. · CIK 0002032947 · Chief Product Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,181,896

F1 · kind: 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.

F2 · price: Represents the weighted average sales price per share. The shares sold at prices ranging from $0.8314 to $0.8718 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.

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March 20, 2026 Filed Mar 24, 2026 23:02 UTC
Keyes Jeffry R.Chief Financial Officer
SaleClass A Common Stock 4,233 $0.85 $3,590.85
Disclosure

SEC source: 0001140361-26-010949 · form4.xml · nonDerivative · entry 1

Keyes Jeffry R. · CIK 0001557736 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,811,767

F1 · kind: 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.

F2 · price: Represents the weighted average sales price per share. The shares sold at prices ranging from $0.8314 to $0.8718 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.

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March 20, 2026 Filed Mar 24, 2026 22:55 UTC
LaPointe ChristianGC & Corp. Secretary
SaleClass A Common Stock 5,849 $0.85 $4,961.71
Disclosure

SEC source: 0001140361-26-010946 · form4.xml · nonDerivative · entry 1

LaPointe Christian · CIK 0001856912 · GC & Corp. Secretary

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,204,127

F1 · kind: 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.

F2 · price: Represents the weighted average sales price per share. The shares sold at prices ranging from $0.8314 to $0.8718 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.

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March 20, 2026 Filed Mar 24, 2026 22:49 UTC
Hawkins Jeffrey AlanDirector · President & CEO
SaleClass A Common Stock 11,628 $0.85 $9,864.03
Disclosure

SEC source: 0001140361-26-010941 · form4.xml · nonDerivative · entry 1

Hawkins Jeffrey Alan · CIK 0001505034 · Director · President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,871,996

F1 · kind: 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.

F2 · price: Represents the weighted average sales price per share. The shares sold at prices ranging from $0.8314 to $0.8718 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.

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March 12, 2026 Filed Mar 16, 2026 20:14 UTC
Vieceli John S.Chief Product Officer
GrantStock Option (Right to Buy) · Derivative 468,508 $0.00 Strike: $0.98 $0.00
Disclosure

SEC source: 0001140361-26-009605 · form4.xml · derivative · entry 2

Vieceli John S. · CIK 0002032947 · Chief Product Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 468,508

Underlying: Class A Common Stock · 468,508 shares

Expires 2036-03-12

F2 · derivative.exercise_date: The shares underlying this option shall vest in equal quarterly installments beginning on June 20, 2026 until fully vested, subject to continued service through the applicable vesting dates.

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March 12, 2026 Filed Mar 16, 2026 20:14 UTC
Vieceli John S.Chief Product Officer
GrantClass A Common Stock 391,681 $0.00 $0.00
Disclosure

SEC source: 0001140361-26-009605 · form4.xml · nonDerivative · entry 1

Vieceli John S. · CIK 0002032947 · Chief Product Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,192,654

F1 · shares: The grant consists of restricted stock units ("RSUs"). Each RSU represents the right to receive one share of common stock upon vesting. The RSUs shall vest in 16 equal quarterly installments beginning on June 20, 2026 until fully vested, subject to continued service through the applicable vesting date.

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March 12, 2026 Filed Mar 16, 2026 20:19 UTC
Keyes Jeffry R.Chief Financial Officer
GrantStock Option (Right to Buy) · Derivative 780,847 $0.00 Strike: $0.98 $0.00
Disclosure

SEC source: 0001140361-26-009612 · form4.xml · derivative · entry 2

Keyes Jeffry R. · CIK 0001557736 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 780,847

Underlying: Class A Common Stock · 780,847 shares

Expires 2036-03-12

F2 · derivative.exercise_date: The shares underlying this option shall vest in equal quarterly installments beginning on June 20, 2026 until fully vested, subject to continued service through the applicable vesting dates.

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March 12, 2026 Filed Mar 16, 2026 20:19 UTC
Keyes Jeffry R.Chief Financial Officer
GrantClass A Common Stock 652,803 $0.00 $0.00
Disclosure

SEC source: 0001140361-26-009612 · form4.xml · nonDerivative · entry 1

Keyes Jeffry R. · CIK 0001557736 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,816,000

F1 · shares: The grant consists of restricted stock units ("RSUs"). Each RSU represents the right to receive one share of common stock upon vesting. The RSUs shall vest in four equal annual installments beginning on April 20, 2027 until fully vested, subject to continued service through the applicable vesting date.

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March 12, 2026 Filed Mar 16, 2026 20:10 UTC
Hawkins Jeffrey AlanDirector · President & CEO
GrantStock Option (Right to Buy) · Derivative 1,561,695 $0.00 Strike: $0.98 $0.00
Disclosure

SEC source: 0001140361-26-009602 · form4.xml · derivative · entry 2

Hawkins Jeffrey Alan · CIK 0001505034 · Director · President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,561,695

Underlying: Class A Common Stock · 1,561,695 shares

Expires 2036-03-12

F2 · derivative.exercise_date: The shares underlying this option shall vest in equal quarterly installments beginning on June 20, 2026 until fully vested, subject to continued service through the applicable vesting dates.

Read SEC document
March 12, 2026 Filed Mar 16, 2026 20:10 UTC
Hawkins Jeffrey AlanDirector · President & CEO
GrantClass A Common Stock 1,305,606 $0.00 $0.00
Disclosure

SEC source: 0001140361-26-009602 · form4.xml · nonDerivative · entry 1

Hawkins Jeffrey Alan · CIK 0001505034 · Director · President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,883,624

F1 · shares: The grant consists of restricted stock units ("RSUs"). Each RSU represents the right to receive one share of common stock upon vesting. The RSUs shall vest in four equal annual installments beginning on April 20, 2027 until fully vested, subject to continued service through the applicable vesting date.

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March 12, 2026 Filed Mar 16, 2026 20:06 UTC
LaPointe ChristianGC & Corp. Secretary
GrantStock Option (Right to Buy) · Derivative 312,339 $0.00 Strike: $0.98 $0.00
Disclosure

SEC source: 0001140361-26-009598 · form4.xml · derivative · entry 2

LaPointe Christian · CIK 0001856912 · GC & Corp. Secretary

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 312,339

Underlying: Class A Common Stock · 312,339 shares

Expires 2036-03-12

F2 · derivative.exercise_date: The shares underlying this option shall vest in equal quarterly installments beginning on June 20, 2026 until fully vested, subject to continued service through the applicable vesting dates.

Read SEC document
March 12, 2026 Filed Mar 16, 2026 20:06 UTC
LaPointe ChristianGC & Corp. Secretary
GrantClass A Common Stock 261,121 $0.00 $0.00
Disclosure

SEC source: 0001140361-26-009598 · form4.xml · nonDerivative · entry 1

LaPointe Christian · CIK 0001856912 · GC & Corp. Secretary

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,209,976

F1 · shares: The grant consists of restricted stock units ("RSUs"). Each RSU represents the right to receive one share of common stock upon vesting. The RSUs shall vest in 16 equal quarterly installments beginning on June 20, 2026 until fully vested, subject to continued service through the applicable vesting date.

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March 05, 2026 Filed Mar 9, 2026 10:01 UTC
Dowdy PaulaDirector
PurchaseClass A Common Stock 109,890 $0.95 $104,450.45
Disclosure

SEC source: 0001140361-26-008320 · form4.xml · nonDerivative · entry 1

Dowdy Paula · CIK 0002016312 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 269,107

F1 · price: Represents the weighted average purchase price per share. The shares were purchased at prices ranging from $0.9051 to $0.9730 per share. Full information regarding the number of shares purchased 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.

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March 05, 2026 Filed Mar 9, 2026 10:01 UTC PurchaseClass A Common Stock 500,000 $0.92 $459,800.00
Disclosure

SEC source: 0001140361-26-008322 · form4.xml · nonDerivative · entry 1

Kummeth Charles R. · CIK 0001534980 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 855,000

F1 · price: Represents the weighted average purchase price per share. The shares were purchased at prices ranging from $0.8906 to $0.9735 per share. Full information regarding the number of shares purchased 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.

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February 24, 2026 Filed Feb 26, 2026 21:05 UTC
Jafri AmirDirector
GrantStock Option (right to buy) · Derivative 114,055 $0.00 Strike: $0.93 $0.00
Disclosure

SEC source: 0001140361-26-006970 · form4.xml · derivative · entry 2

Jafri Amir · CIK 0001994864 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 114,055

Underlying: Class A Common Stock · 114,055 shares

Expires 2036-02-24

F1 · derivative.exercise_date: The shares underlying this option shall vest in equal monthly installments beginning on March 31, 2026 and on the last day of each month thereafter, subject to continued service through the applicable vesting dates.

Read SEC document
December 22, 2025 Filed Dec 23, 2025 01:11 UTC
Vieceli John S.Chief Product Officer
SaleClass A Common Stock 21,927 $1.28 $27,978.85
Disclosure

SEC source: 0002032947-25-000005 · primary_doc.xml · nonDerivative · entry 1

Vieceli John S. · CIK 0002032947 · Chief Product Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 800,973

F1 · kind: 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.

F2 · price: Represents the weighted average sales price per share. The shares sold at prices ranging from $1.260 to $1.310 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.

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December 22, 2025 Filed Dec 23, 2025 01:01 UTC
LaPointe ChristianGC & Corp. Secretary
SaleClass A Common Stock 11,951 $1.28 $15,249.48
Disclosure

SEC source: 0001856912-25-000005 · primary_doc.xml · nonDerivative · entry 1

LaPointe Christian · CIK 0001856912 · GC & Corp. Secretary

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 948,855

F1 · kind: 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.

F2 · price: Represents the weighted average sales price per share. The shares sold at prices ranging from $1.260 to $1.310 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.

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December 22, 2025 Filed Dec 23, 2025 00:50 UTC
Keyes Jeffry R.Chief Financial Officer
SaleClass A Common Stock 8,627 $1.28 $11,008.05
Disclosure

SEC source: 0001557736-25-000006 · primary_doc.xml · nonDerivative · entry 1

Keyes Jeffry R. · CIK 0001557736 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,163,197

F1 · kind: 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.

F2 · price: Represents the weighted average sales price per share. The shares sold at prices ranging from $1.260 to $1.310 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.

Read SEC document
December 22, 2025 Filed Dec 23, 2025 00:29 UTC
Hawkins Jeffrey AlanDirector · President & CEO
SaleClass A Common Stock 23,707 $1.28 $30,250.13
Disclosure

SEC source: 0001505034-25-000005 · primary_doc.xml · nonDerivative · entry 1

Hawkins Jeffrey Alan · CIK 0001505034 · Director · President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,578,018

F1 · kind: 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.

F2 · price: Represents the weighted average sales price per share. The shares sold at prices ranging from $1.260 to $1.310 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.

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Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.