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Nasdaq · USD

QTRX

Quanterix Corp

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Tapewire entity
6649
SEC CIK
0001503274
Parsed reports
711

Last 12 months

Inside the activity.

3 purchase rows · 0 sale rows

Disclosed non-derivative P/S rows, by transaction month. Includes amendments and private transactions.
Monthly counts
MonthPurchasesSales
Nov 202500
Dec 202500
Jan 202600
Feb 202600
Mar 202600
Apr 202600
May 202610
Jun 202600
Jul 202600
Aug 202620
Sep 202600
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
June 09, 2025 Filed Jun 10, 2025 20:08 UTC
Toloue MasoudDirector · President & CEO
PurchaseCommon Stock 45,900 $5.42 $248,722.92
Disclosure

SEC source: 0001562180-25-004679 · primarydocument.xml · nonDerivative · entry 1

Toloue Masoud · CIK 0001867276 · Director · President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 518,922

F1 · price: This transaction was executed in multiple trades at prices ranging from $5.38 to $5.42. The price reported reflects the weighted average sale price. The reporting person undertakes to provide upon request to the SEC staff, the issuer or any security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

F2 · balance_after: Includes 245,501 restricted stock units.

Read SEC document
June 06, 2025 Filed Jun 9, 2025 21:10 UTC PurchaseCommon Stock 93,113 $5.44 $506,348.49
Disclosure

SEC source: 0001562180-25-004655 · primarydocument.xml · nonDerivative · entry 1

DONNELLY WILLIAM P · CIK 0001207928 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 139,094

F1 · price: This transaction was executed in multiple trades at prices ranging from $5.345 to $5.5224. The price reported reflects the weighted average purchase price. The reporting person undertakes to provide upon request to the SEC staff, the issuer or any security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

F2 · balance_after: Includes 12,955 restricted stock units.

Read SEC document
June 06, 2025 Filed Jun 9, 2025 17:44 UTC
WALT DAVID RDirector
PurchaseCommon Stock 131,869 $5.43 $716,576.15
Disclosure

SEC source: 0001562180-25-004657 · primarydocument.xml · nonDerivative · entry 1

WALT DAVID R · CIK 0001205236 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,628,802

F1 · price: This transaction was executed in multiple trades at prices ranging from $5.32 to $5.56. The price reported reflects the weighted average purchase price. The reporting person undertakes to provide upon request to the SEC staff, the issuer or any security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

F2 · balance_after: Includes 7,435 restricted stock units.

Read SEC document
May 31, 2025 Filed Jun 3, 2025 20:19 UTC
Toloue MasoudDirector · President & CEO
Tax withholdingCommon Stock 254 $5.20 $1,320.80
Disclosure

SEC source: 0001562180-25-004344 · primarydocument.xml · nonDerivative · entry 1

Toloue Masoud · CIK 0001867276 · Director · President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 473,022

F1 · shares: Shares withheld by Quanterix Corporation solely to cover tax obligations upon the vesting of 761 RSUs.

F2 · balance_after: Includes 245,501 restricted stock units.

Read SEC document
May 15, 2025 Filed May 19, 2025 13:15 UTC
Sriram VandanaChief Financial Officer
Tax withholdingCommon Stock 229 $4.50 $1,030.50
Disclosure

SEC source: 0001562180-25-003967 · primarydocument.xml · nonDerivative · entry 1

Sriram Vandana · CIK 0001908223 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 83,737

F1 · shares: Shares withheld by Quanterix Corporation solely to cover tax obligations upon the vesting of 777 RSUs.

F2 · balance_after: Includes 74,778 restricted stock units.

Read SEC document
May 15, 2025 Filed May 19, 2025 13:14 UTC
Toloue MasoudDirector · President & CEO
Tax withholdingCommon Stock 1,242 $4.50 $5,589.00
Disclosure

SEC source: 0001562180-25-003966 · primarydocument.xml · nonDerivative · entry 1

Toloue Masoud · CIK 0001867276 · Director · President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 473,276

F1 · shares: Shares withheld by Quanterix Corporation solely to cover tax obligations upon the vesting of 3,722 RSUs.

F2 · balance_after: Includes 242,262 restricted stock units.

Read SEC document
April 30, 2025 Filed May 2, 2025 20:05 UTC
Toloue MasoudDirector · President & CEO
Tax withholdingCommon Stock 254 $5.76 $1,463.04
Disclosure

SEC source: 0001562180-25-003476 · primarydocument.xml · nonDerivative · entry 1

Toloue Masoud · CIK 0001867276 · Director · President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 474,518

F1 · shares: Shares withheld by Quanterix Corporation solely to cover tax obligations upon the vesting of 761 RSUs.

F2 · balance_after: Includes 245,984 restricted stock units.

Read SEC document
April 15, 2025 Filed Apr 17, 2025 20:01 UTC
Sriram VandanaChief Financial Officer
Tax withholdingCommon Stock 229 $5.36 $1,227.44
Disclosure

SEC source: 0001562180-25-003183 · primarydocument.xml · nonDerivative · entry 1

Sriram Vandana · CIK 0001908223 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 83,966

F1 · shares: Shares withheld by Quanterix Corporation solely to cover tax obligations upon the vesting of 777 RSUs.

F2 · balance_after: Includes 75,555 restricted stock units.

Read SEC document
April 15, 2025 Filed Apr 17, 2025 20:01 UTC
Toloue MasoudDirector · President & CEO
Tax withholdingCommon Stock 1,242 $5.16 $6,408.72
Disclosure

SEC source: 0001562180-25-003182 · primarydocument.xml · nonDerivative · entry 1

Toloue Masoud · CIK 0001867276 · Director · President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 474,772

F1 · shares: Shares withheld by Quanterix Corporation solely to cover tax obligations upon the vesting of 3,722 RSUs.

F2 · balance_after: Includes 246,745 restricted stock units.

Read SEC document
April 01, 2025 Filed Apr 3, 2025 20:14 UTC GrantCommon Stock 2,479 $6.67 $16,522.54
Disclosure

SEC source: 0001562180-25-002981 · primarydocument.xml · nonDerivative · entry 1

MEISTER PAUL M · CIK 0001033876 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 307,037

F1 · shares: Consists of stock granted in lieu of cash fees for service on the Company's Board of Directors and committees thereof for the first quarter of 2025.

F2 · price: Closing price of the Company's common stock on the Nasdaq Global Market on April 1, 2025.

F3 · balance_after: Includes 7,435 restricted stock units.

Read SEC document
April 01, 2025 Filed Apr 3, 2025 16:14 UTC GrantCommon Stock 2,625 $6.67 $17,495.63
Disclosure

SEC source: 0001562180-25-002980 · primarydocument.xml · nonDerivative · entry 1

Hlavinka Sarah E. · CIK 0001433554 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 57,455

F1 · shares: Consists of stock granted in lieu of cash fees for service on the Company's Board of Directors and committees thereof for the first quarter of 2025.

F2 · price: Closing price of the Company's common stock on the Nasdaq Global Market on April 1, 2025.

F3 · balance_after: Includes 7,435 restricted stock units.

Read SEC document
April 01, 2025 Filed Apr 3, 2025 20:14 UTC GrantCommon Stock 2,681 $6.67 $17,868.87
Disclosure

SEC source: 0001562180-25-002979 · primarydocument.xml · nonDerivative · entry 1

DONNELLY WILLIAM P · CIK 0001207928 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 45,981

F1 · shares: Consists of stock granted in lieu of cash fees for service on the Company's Board of Directors and committees thereof for the first quarter of 2025.

F2 · price: Closing price of the Company's common stock on the Nasdaq Global Market on April 1, 2025.

F3 · balance_after: Includes 12,955 restricted stock units.

Read SEC document
April 01, 2025 Filed Apr 3, 2025 16:15 UTC
WALT DAVID RDirector
GrantCommon Stock 2,156 $6.67 $14,369.74
Disclosure

SEC source: 0001562180-25-002982 · primarydocument.xml · nonDerivative · entry 1

WALT DAVID R · CIK 0001205236 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,496,933

F1 · shares: Consists of stock granted in lieu of cash fees for service on the Company's Board of Directors and committees thereof for the first quarter of 2025.

F2 · price: Closing price of the Company's common stock on the Nasdaq Global Market on April 1, 2025.

F3 · balance_after: Includes 7,435 restricted stock units.

Read SEC document
March 31, 2025 Filed Apr 2, 2025 20:52 UTC
Toloue MasoudDirector · President & CEO
Tax withholdingCommon Stock 254 $6.51 $1,653.54
Disclosure

SEC source: 0001562180-25-002912 · primarydocument.xml · nonDerivative · entry 1

Toloue Masoud · CIK 0001867276 · Director · President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 476,014

F1 · shares: Shares withheld by Quanterix Corporation solely to cover tax obligations upon the vesting of 761 RSUs.

F2 · balance_after: Includes 250,467 restricted stock units.

Read SEC document
March 15, 2025 Filed Mar 18, 2025 22:25 UTC
Toloue MasoudDirector · President & CEO
Tax withholdingCommon Stock 1,242 $7.06 $8,768.52
Disclosure

SEC source: 0001562180-25-002555 · primarydocument.xml · nonDerivative · entry 1

Toloue Masoud · CIK 0001867276 · Director · President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 476,268

F1 · shares: Shares withheld by Quanterix Corporation solely to cover tax obligations upon the vesting of 3,722 RSUs.

F2 · balance_after: Includes 251,228 restricted stock units.

Read SEC document
March 15, 2025 Filed Mar 18, 2025 22:22 UTC
Sriram VandanaChief Financial Officer
Tax withholdingCommon Stock 229 $7.06 $1,616.74
Disclosure

SEC source: 0001562180-25-002554 · primarydocument.xml · nonDerivative · entry 1

Sriram Vandana · CIK 0001908223 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 84,195

F1 · shares: Shares withheld by Quanterix Corporation solely to cover tax obligations upon the vesting of 777 RSUs.

F2 · balance_after: Includes 76,332 restricted stock units.

Read SEC document
February 28, 2025 Filed Mar 4, 2025 21:03 UTC
Toloue MasoudDirector · President & CEO
Tax withholdingCommon Stock 247 $7.59 $1,874.73
Disclosure

SEC source: 0001562180-25-001948 · primarydocument.xml · nonDerivative · entry 1

Toloue Masoud · CIK 0001867276 · Director · President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 477,510

F1 · shares: Shares withheld by Quanterix Corporation solely to cover tax obligations upon the vesting of 761 RSUs.

F2 · balance_after: Includes 254,950 restricted stock units.

Read SEC document
February 15, 2025 Filed Feb 19, 2025 21:13 UTC
Sriram VandanaChief Financial Officer
Tax withholdingCommon Stock 92 $8.05 $740.60
Disclosure

SEC source: 0001562180-25-001308 · primarydocument.xml · nonDerivative · entry 1

Sriram Vandana · CIK 0001908223 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 84,424

F1 · shares: Shares withheld by Quanterix Corporation solely to cover tax obligations upon the vesting of 263 RSUs.

F2 · balance_after: Includes 77,109 restricted stock units.

Read SEC document
February 15, 2025 Filed Feb 19, 2025 21:13 UTC
Toloue MasoudDirector · President & CEO
Tax withholdingCommon Stock 752 $8.05 $6,053.60
Disclosure

SEC source: 0001562180-25-001307 · primarydocument.xml · nonDerivative · entry 1

Toloue Masoud · CIK 0001867276 · Director · President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 477,757

F1 · shares: Shares withheld by Quanterix Corporation solely to cover tax obligations upon the vesting of 2,316 RSUs.

F2 · balance_after: Includes 255,711 restricted stock units.

Read SEC document
February 04, 2025 Filed Feb 6, 2025 22:01 UTC
Sriram VandanaChief Financial Officer
GrantStock Option (right to buy) · Derivative 166,119 $0.00 Strike: $8.43 $0.00
Disclosure

SEC source: 0001562180-25-000996 · primarydocument.xml · derivative · entry 2

Sriram Vandana · CIK 0001908223 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 166,119

Underlying: Common Stock · 166,119 shares

Expires 2035-02-04

F3 · derivative.exercise_date: The option vests as to 25% of the shares on February 4, 2026, and the remaining 75% vests in 36 equal monthly installments on the 15th of each month beginning on March 15, 2026.

Read SEC document
February 04, 2025 Filed Feb 6, 2025 22:01 UTC
Sriram VandanaChief Financial Officer
GrantCommon Stock 50,712 $0.00 $0.00
Disclosure

SEC source: 0001562180-25-000996 · primarydocument.xml · nonDerivative · entry 1

Sriram Vandana · CIK 0001908223 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 84,516

F1 · shares: Represents shares of stock issuable on vesting of restricted stock units. The restricted stock units vest as to 25% of the shares on February 4, 2026, and the remaining 75% vest in 36 equal monthly installments on the 15th of each month beginning on March 15, 2026.

F2 · balance_after: Includes 77,372 restricted stock units.

Read SEC document
February 04, 2025 Filed Feb 6, 2025 22:00 UTC
Toloue MasoudDirector · President & CEO
GrantStock Option (right to buy) · Derivative 454,641 $0.00 Strike: $8.43 $0.00
Disclosure

SEC source: 0001562180-25-000995 · primarydocument.xml · derivative · entry 2

Toloue Masoud · CIK 0001867276 · Director · President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 454,641

Underlying: Common Stock · 454,641 shares

Expires 2035-02-04

F3 · derivative.exercise_date: The option vests as to 25% of the shares on February 4, 2026, and the remaining 75% vests in 36 equal monthly installments on the 15th of each month beginning on March 15, 2026.

Read SEC document
February 04, 2025 Filed Feb 6, 2025 22:00 UTC
Toloue MasoudDirector · President & CEO
GrantCommon Stock 138,790 $0.00 $0.00
Disclosure

SEC source: 0001562180-25-000995 · primarydocument.xml · nonDerivative · entry 1

Toloue Masoud · CIK 0001867276 · Director · President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 478,509

F1 · shares: Represents shares of stock issuable on vesting of restricted stock units. The restricted stock units vest as to 25% of the shares on February 4, 2026, and the remaining 75% vest in 36 equal monthly installments on the 15th of each month beginning on March 15, 2026.

F2 · balance_after: Includes 258,027 restricted stock units.

Read SEC document
February 02, 2025 Filed Feb 5, 2025 02:39 UTC
Sriram VandanaChief Financial Officer
Tax withholdingCommon Stock 2,166 $9.19 $19,905.54
Disclosure

SEC source: 0001562180-25-000929 · primarydocument.xml · nonDerivative · entry 1

Sriram Vandana · CIK 0001908223 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 33,804

F1 · shares: Shares withheld by Quanterix Corporation solely to cover tax obligations upon the vesting of 6,168 RSUs.

F2 · balance_after: Includes 26,660 restricted stock units.

Read SEC document
February 02, 2025 Filed Feb 5, 2025 02:33 UTC
Toloue MasoudDirector · President & CEO
Tax withholdingCommon Stock 6,077 $9.19 $55,847.63
Disclosure

SEC source: 0001562180-25-000928 · primarydocument.xml · nonDerivative · entry 2

Toloue Masoud · CIK 0001867276 · Director · President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 339,719

F3 · shares: Shares withheld by Quanterix Corporation solely to cover tax obligations upon the vesting of 16,883 RSUs.

F4 · balance_after: Includes 119,237 restricted stock units.

Read SEC document
January 31, 2025 Filed Feb 5, 2025 02:33 UTC
Toloue MasoudDirector · President & CEO
Tax withholdingCommon Stock 298 $9.19 $2,738.62
Disclosure

SEC source: 0001562180-25-000928 · primarydocument.xml · nonDerivative · entry 1

Toloue Masoud · CIK 0001867276 · Director · President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 345,796

F1 · shares: Shares withheld by Quanterix Corporation solely to cover tax obligations upon the vesting of 761 RSUs.

F2 · balance_after: Includes 136,120 restricted stock units.

Read SEC document
January 15, 2025 Filed Jan 17, 2025 21:05 UTC
Sriram VandanaChief Financial Officer
Tax withholdingCommon Stock 93 $8.62 $801.66
Disclosure

SEC source: 0001562180-25-000398 · primarydocument.xml · nonDerivative · entry 1

Sriram Vandana · CIK 0001908223 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 35,970

F1 · shares: Shares withheld by Quanterix Corporation solely to cover tax obligations upon the vesting of 263 RSUs.

F2 · balance_after: Includes 32,828 restricted stock units.

Read SEC document
January 15, 2025 Filed Jan 17, 2025 21:05 UTC
Toloue MasoudDirector · President & CEO
Tax withholdingCommon Stock 906 $8.62 $7,809.72
Disclosure

SEC source: 0001562180-25-000397 · primarydocument.xml · nonDerivative · entry 1

Toloue Masoud · CIK 0001867276 · Director · President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 346,094

F1 · shares: Shares withheld by Quanterix Corporation solely to cover tax obligations upon the vesting of 2,316 RSUs.

F2 · balance_after: Includes 136,881 restricted stock units.

Read SEC document
January 02, 2025 Filed Jan 6, 2025 22:45 UTC GrantStock Options (Right to buy) · Derivative 15,821 $0.00 Strike: $10.76 $0.00
Disclosure

SEC source: 0001562180-25-000201 · primarydocument.xml · derivative · entry 3

MEISTER PAUL M · CIK 0001033876 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 15,821

Underlying: Common Stock · 15,821 shares

Expires 2035-01-02

F5 · shares: Represents non-qualified stock option to purchase 15,821 shares of common stock granted pursuant to the Quanterix Corporation Amended and Restated Non-Employee Director Compensation Policy.

Read SEC document
January 02, 2025 Filed Jan 6, 2025 22:45 UTC GrantCommon Stock 1,394 $10.76 $14,999.44
Disclosure

SEC source: 0001562180-25-000201 · primarydocument.xml · nonDerivative · entry 2

MEISTER PAUL M · CIK 0001033876 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 304,558

F3 · shares: Consists of stock granted in lieu of cash fees for service on the Company's Board of Directors and committees thereof for the fourth quarter of 2024.

F4 · price: Closing price of the Company's common stock on the Nasdaq Global Market on January 1, 2025.

F2 · balance_after: Includes 7,435 restricted stock units.

Read SEC document
January 02, 2025 Filed Jan 6, 2025 22:45 UTC GrantCommon Stock 7,435 $0.00 $0.00
Disclosure

SEC source: 0001562180-25-000201 · primarydocument.xml · nonDerivative · entry 1

MEISTER PAUL M · CIK 0001033876 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 303,164

F1 · shares: Represents restricted stock units that vest as to 100% of the shares on December 31, 2025 granted pursuant to the Quanterix Corporation Amended and Restated Non-Employee Director Compensation Policy. Each restricted stock unit represents the right to receive one share of the Issuer's common stock.

F2 · balance_after: Includes 7,435 restricted stock units.

Read SEC document
January 02, 2025 Filed Jan 6, 2025 22:49 UTC GrantStock Option (Right to Buy) · Derivative 15,821 $0.00 Strike: $10.76 $0.00
Disclosure

SEC source: 0001562180-25-000203 · primarydocument.xml · derivative · entry 2

Elliott Jeffrey Thomas · CIK 0001689757 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 15,821

Underlying: Common Stock · 15,821 shares

Expires 2035-01-02

F3 · shares: Represents non-qualified stock option to purchase 15,821 shares of common stock granted pursuant to the Quanterix Corporation Amended and Restated Non-Employee Director Compensation Policy.

Read SEC document
January 02, 2025 Filed Jan 6, 2025 22:49 UTC GrantCommon Stock 7,435 $0.00 $0.00
Disclosure

SEC source: 0001562180-25-000203 · primarydocument.xml · nonDerivative · entry 1

Elliott Jeffrey Thomas · CIK 0001689757 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 19,420

F1 · shares: Represents restricted stock units that vest as to 100% of the shares on December 31, 2025 granted pursuant to the Quanterix Corporation Amended and Restated Non-Employee Director Compensation Policy. Each restricted stock unit represents the right to receive one share of the Issuer's common stock.

F2 · balance_after: Includes 19,420 restricted stock units.

Read SEC document
January 02, 2025 Filed Jan 6, 2025 17:41 UTC GrantStock Options (Right to buy) · Derivative 15,821 $0.00 Strike: $10.76 $0.00
Disclosure

SEC source: 0001562180-25-000200 · primarydocument.xml · derivative · entry 3

Hlavinka Sarah E. · CIK 0001433554 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 15,821

Underlying: Common Stock · 15,821 shares

Expires 2035-01-02

F5 · shares: Represents non-qualified stock option to purchase 15,821 shares of common stock granted pursuant to the Quanterix Corporation Amended and Restated Non-Employee Director Compensation Policy.

Read SEC document
January 02, 2025 Filed Jan 6, 2025 17:41 UTC GrantCommon Stock 1,394 $10.76 $14,999.44
Disclosure

SEC source: 0001562180-25-000200 · primarydocument.xml · nonDerivative · entry 2

Hlavinka Sarah E. · CIK 0001433554 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 54,830

F3 · shares: Consists of stock granted in lieu of cash fees for service on the Company's Board of Directors and committees thereof for the fourth quarter of 2024.

F4 · price: Closing price of the Company's common stock on the Nasdaq Global Market on January 2, 2025.

F2 · balance_after: Includes 7,435 restricted stock units.

Read SEC document
January 02, 2025 Filed Jan 6, 2025 17:41 UTC GrantCommon Stock 7,435 $0.00 $0.00
Disclosure

SEC source: 0001562180-25-000200 · primarydocument.xml · nonDerivative · entry 1

Hlavinka Sarah E. · CIK 0001433554 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 53,436

F1 · shares: Represents restricted stock units that vest as to 100% of the shares on December 31, 2025 granted pursuant to the Quanterix Corporation Amended and Restated Non-Employee Director Compensation Policy. Each restricted stock unit represents the right to receive one share of the Issuer's common stock.

F2 · balance_after: Includes 7,435 restricted stock units.

Read SEC document
January 02, 2025 Filed Jan 6, 2025 22:55 UTC GrantStock Option (Right to Buy) · Derivative 15,821 $0.00 Strike: $10.76 $0.00
Disclosure

SEC source: 0001562180-25-000207 · primarydocument.xml · derivative · entry 3

Madaus Martin D · CIK 0001310268 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 15,821

Underlying: Common Stock · 15,821 shares

Expires 2035-01-02

F3 · shares: Represents non-qualified stock option to purchase 15,821 shares of common stock granted pursuant to the Quanterix Corporation Amended and Restated Non-Employee Director Compensation Policy.

Read SEC document
January 02, 2025 Filed Jan 6, 2025 22:55 UTC GrantCommon Stock 7,435 $0.00 $0.00
Disclosure

SEC source: 0001562180-25-000207 · primarydocument.xml · nonDerivative · entry 1

Madaus Martin D · CIK 0001310268 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 36,908

F1 · shares: Represents restricted stock units that vest as to 100% of the shares on December 31, 2025 granted pursuant to the Quanterix Corporation Amended and Restated Non-Employee Director Compensation Policy. Each restricted stock unit represents the right to receive one share of the Issuer's common stock.

F2 · balance_after: Includes 7,435 restricted stock units.

Read SEC document
January 02, 2025 Filed Jan 6, 2025 22:57 UTC GrantStock Option (Right to Buy) · Derivative 15,821 $0.00 Strike: $10.76 $0.00
Disclosure

SEC source: 0001562180-25-000209 · primarydocument.xml · derivative · entry 2

Magovcevic-Liebisch Ivana · CIK 0001279281 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 15,821

Underlying: Common Stock · 15,821 shares

Expires 2035-01-02

F3 · shares: Represents non-qualified stock option to purchase 15,821 shares of common stock granted pursuant to the Quanterix Corporation Amended and Restated Non-Employee Director Compensation Policy.

Read SEC document
January 02, 2025 Filed Jan 6, 2025 22:57 UTC GrantCommon Stock 7,435 $0.00 $0.00
Disclosure

SEC source: 0001562180-25-000209 · primarydocument.xml · nonDerivative · entry 1

Magovcevic-Liebisch Ivana · CIK 0001279281 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 20,235

F1 · shares: Represents restricted stock units that vest as to 100% of the shares on December 31, 2025 granted pursuant to the Quanterix Corporation Amended and Restated Non-Employee Director Compensation Policy. Each restricted stock unit represents the right to receive one share of the Issuer's common stock.

F2 · balance_after: Includes 20,235 restricted stock units.

Read SEC document
January 02, 2025 Filed Jan 6, 2025 22:38 UTC GrantStock Options (Right to buy) · Derivative 15,821 $0.00 Strike: $10.76 $0.00
Disclosure

SEC source: 0001562180-25-000199 · primarydocument.xml · derivative · entry 3

DONNELLY WILLIAM P · CIK 0001207928 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 15,821

Underlying: Common Stock · 15,821 shares

Expires 2035-01-02

F5 · shares: Represents non-qualified stock option to purchase 15,821 shares of common stock granted pursuant to the Quanterix Corporation Amended and Restated Non-Employee Director Compensation Policy.

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January 02, 2025 Filed Jan 6, 2025 22:38 UTC GrantCommon Stock 1,282 $10.76 $13,794.32
Disclosure

SEC source: 0001562180-25-000199 · primarydocument.xml · nonDerivative · entry 2

DONNELLY WILLIAM P · CIK 0001207928 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 43,300

F3 · shares: Consists of stock granted in lieu of cash fees for service on the Company's Board of Directors and committees thereof for the fourth quarter of 2024.

F4 · price: Closing price of the Company's common stock on the Nasdaq Global Market on January 2, 2025.

F2 · balance_after: Includes 12,955 restricted stock units.

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January 02, 2025 Filed Jan 6, 2025 22:38 UTC GrantCommon Stock 7,435 $0.00 $0.00
Disclosure

SEC source: 0001562180-25-000199 · primarydocument.xml · nonDerivative · entry 1

DONNELLY WILLIAM P · CIK 0001207928 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 42,018

F1 · shares: Represents restricted stock units that vest as to 100% of the shares on December 31, 2025 granted pursuant to the Quanterix Corporation Amended and Restated Non-Employee Director Compensation Policy. Each restricted stock unit represents the right to receive one share of the Issuer's common stock.

F2 · balance_after: Includes 12,955 restricted stock units.

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January 02, 2025 Filed Jan 6, 2025 17:58 UTC
WALT DAVID RDirector
GrantStock Option (Right to Buy) · Derivative 15,821 $0.00 Strike: $10.76 $0.00
Disclosure

SEC source: 0001562180-25-000211 · primarydocument.xml · derivative · entry 2

WALT DAVID R · CIK 0001205236 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 15,821

Underlying: Common Stock · 15,821 shares

Expires 2035-01-02

F3 · shares: Represents non-qualified stock option to purchase 15,821 shares of common stock granted pursuant to the Quanterix Corporation Amended and Restated Non-Employee Director Compensation Policy.

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January 02, 2025 Filed Jan 6, 2025 17:58 UTC
WALT DAVID RDirector
GrantCommon Stock 7,435 $0.00 $0.00
Disclosure

SEC source: 0001562180-25-000211 · primarydocument.xml · nonDerivative · entry 1

WALT DAVID R · CIK 0001205236 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,494,777

F1 · shares: Represents restricted stock units that vest as to 100% of the shares on December 31, 2025 granted pursuant to the Quanterix Corporation Amended and Restated Non-Employee Director Compensation Policy. Each restricted stock unit represents the right to receive one share of the Issuer's common stock.

F2 · balance_after: Includes 7,435 restricted stock units.

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January 02, 2025 Filed Jan 6, 2025 22:48 UTC
Flynn KarenDirector
GrantStock Option (Right to Buy) · Derivative 15,821 $0.00 Strike: $10.76 $0.00
Disclosure

SEC source: 0001562180-25-000202 · primarydocument.xml · derivative · entry 2

Flynn Karen · CIK 0001553599 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 15,821

Underlying: Common Stock · 15,821 shares

Expires 2035-01-02

F3 · shares: Represents non-qualified stock option to purchase 15,821 shares of common stock granted pursuant to the Quanterix Corporation Amended and Restated Non-Employee Director Compensation Policy.

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January 02, 2025 Filed Jan 6, 2025 22:48 UTC
Flynn KarenDirector
GrantCommon Stock 7,435 $0.00 $0.00
Disclosure

SEC source: 0001562180-25-000202 · primarydocument.xml · nonDerivative · entry 1

Flynn Karen · CIK 0001553599 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 33,840

F1 · shares: Represents restricted stock units that vest as to 100% of the shares on December 31, 2025 granted pursuant to the Quanterix Corporation Amended and Restated Non-Employee Director Compensation Policy. Each restricted stock unit represents the right to receive one share of the Issuer's common stock.

F2 · balance_after: Includes 11,844 restricted stock units.

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December 31, 2024 Filed Jan 2, 2025 23:15 UTC
Toloue MasoudDirector · President & CEO
Tax withholdingCommon Stock 415 $10.63 $4,411.45
Disclosure

SEC source: 0001562180-25-000025 · primarydocument.xml · nonDerivative · entry 1

Toloue Masoud · CIK 0001867276 · Director · President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 347,000

F1 · shares: Shares withheld by Quanterix Corporation solely to cover tax obligations upon the vesting of 761 RSUs.

F2 · balance_after: Includes 139,197 restricted stock units.

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December 15, 2024 Filed Dec 17, 2024 23:13 UTC
Toloue MasoudDirector · President & CEO
Tax withholdingCommon Stock 752 $10.68 $8,031.36
Disclosure

SEC source: 0001562180-24-008463 · primarydocument.xml · nonDerivative · entry 1

Toloue Masoud · CIK 0001867276 · Director · President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 347,415

F1 · shares: Shares withheld by Quanterix Corporation solely to cover tax obligations upon the vesting of 2,316 RSUs.

F2 · balance_after: Includes 139,958 restricted stock units.

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December 15, 2024 Filed Dec 17, 2024 23:12 UTC
Sriram VandanaChief Financial Officer
Tax withholdingCommon Stock 75 $10.68 $801.00
Disclosure

SEC source: 0001562180-24-008462 · primarydocument.xml · nonDerivative · entry 1

Sriram Vandana · CIK 0001908223 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 36,063

F1 · shares: Shares withheld by Quanterix Corporation solely to cover tax obligations upon the vesting of 263 RSUs.

F2 · balance_after: Includes 33,091 restricted stock units.

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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.