Key facts
- This page summarizes Michael Francis Miller's Form 4 filing for Quanterix Corp (QTRX).
- 15 reported transactions and 5 derivative rows are listed below.
- Accepted by SEC: 16 Jul 2026, 17:33.
Michael Francis Miller - 15 Jul 2026 Form 4 Insider Report for Quanterix Corp (QTRX)
- Reporting relationship
- Chief Technology Officer
- Issuer ticker
- QTRX
- Reported as of
- 15 Jul 2026
- Net transaction value
- $0
- SEC form
- 4
- Accepted by SEC
- 16 Jul 2026, 17:33:41 UTC
- Prior SEC filing
- 02 Jul 2026
- Next SEC filing
- 04 Aug 2026
- Source filing
- View source filing
- Reporting owner signature
- /s/ Meghan Shevlin, Attorney-in-Fact
Source evidence
Original filing metadata and source links for verification.
5 source fields
Reporting owner
1 detail
Key filing fact
Michael Francis Miller filed Form 4 for Quanterix Corp (QTRX) on 16 Jul 2026.
Change
- Previous filing in this sequence was filed on 02 Jul 2026.
- Current net transaction value: $0.
Research use
- This tells you what this filing adds before you inspect full transaction and derivative tables.
- You can trace every row back to the original SEC filing document.
Evidence
Filed on Form 4
View source filing
Ownership activity is grounded in SEC Form 4 disclosures.
Reporting Owners (1)
CIK 0002120516
Primary reporting owner
Miller Michael Francis
- Relationship
- Chief Technology Officer
- Address
- C/O QUANTERIX CORPORATION, 900 MIDDLESEX TURNPIKE, BILLERICA
- Signature
- /s/ Meghan Shevlin, Attorney-in-Fact
- Signature date
- 16 Jul 2026
Reported non-derivative transactions
Shares, units, or other non-derivative securities reported in this filing.
QTRX
transaction
Common Stock
Options Exercise
- Transaction value
- Shares
- +81
- Change %
- +0.23%
- Price
- Shares after
- 35,058
- Date
- 15 Jul 2026
- Ownership
- Direct
- Footnotes
- F1
QTRX
transaction
Common Stock
Tax liability
- Transaction value
- Shares
- -25
- Change %
- -0.07%
- Price
- $4.24*
- Shares after
- 35,033
- Date
- 15 Jul 2026
- Ownership
- Direct
QTRX
transaction
Common Stock
Options Exercise
- Transaction value
- Shares
- +136
- Change %
- +0.39%
- Price
- Shares after
- 35,169
- Date
- 15 Jul 2026
- Ownership
- Direct
- Footnotes
- F1
QTRX
transaction
Common Stock
Tax liability
- Transaction value
- Shares
- -41
- Change %
- -0.12%
- Price
- $4.24*
- Shares after
- 35,128
- Date
- 15 Jul 2026
- Ownership
- Direct
QTRX
transaction
Common Stock
Options Exercise
- Transaction value
- Shares
- +135
- Change %
- +0.38%
- Price
- Shares after
- 35,263
- Date
- 15 Jul 2026
- Ownership
- Direct
- Footnotes
- F1
QTRX
transaction
Common Stock
Tax liability
- Transaction value
- Shares
- -41
- Change %
- -0.12%
- Price
- $4.24*
- Shares after
- 35,222
- Date
- 15 Jul 2026
- Ownership
- Direct
QTRX
transaction
Common Stock
Options Exercise
- Transaction value
- Shares
- +372
- Change %
- +1.1%
- Price
- Shares after
- 35,594
- Date
- 15 Jul 2026
- Ownership
- Direct
- Footnotes
- F1
QTRX
transaction
Common Stock
Tax liability
- Transaction value
- Shares
- -111
- Change %
- -0.31%
- Price
- $4.24*
- Shares after
- 35,483
- Date
- 15 Jul 2026
- Ownership
- Direct
QTRX
transaction
Common Stock
Options Exercise
- Transaction value
- Shares
- +834
- Change %
- +2.4%
- Price
- Shares after
- 36,317
- Date
- 15 Jul 2026
- Ownership
- Direct
- Footnotes
- F1
QTRX
transaction
Common Stock
Tax liability
- Transaction value
- Shares
- -249
- Change %
- -0.69%
- Price
- $4.24*
- Shares after
- 36,068
- Date
- 15 Jul 2026
- Ownership
- Direct
Reported derivative securities
Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.
QTRX
transaction
Derivative
Restricted Stock Unit
Options Exercise
- Transaction value
- Shares
- -81
- Change %
- -12%
- Price
- $0.000000*
- Shares after
- 598
- Date
- 15 Jul 2026
- Ownership
- Direct
- Underlying class
- Common Stock
- Underlying amount
- 81
- Exercise price
- $0.000000
- Footnotes
- F2
QTRX
transaction
Derivative
Restricted Stock Unit
Options Exercise
- Transaction value
- Shares
- -136
- Change %
- -11%
- Price
- $0.000000*
- Shares after
- 1,117
- Date
- 15 Jul 2026
- Ownership
- Direct
- Underlying class
- Common Stock
- Underlying amount
- 136
- Exercise price
- $0.000000
- Footnotes
- F3
QTRX
transaction
Derivative
Restricted Stock Unit
Options Exercise
- Transaction value
- Shares
- -135
- Change %
- -5%
- Price
- $0.000000*
- Shares after
- 2,576
- Date
- 15 Jul 2026
- Ownership
- Direct
- Underlying class
- Common Stock
- Underlying amount
- 135
- Exercise price
- $0.000000
- Footnotes
- F4
QTRX
transaction
Derivative
Restricted Stock Unit
Options Exercise
- Transaction value
- Shares
- -372
- Change %
- -4.3%
- Price
- $0.000000*
- Shares after
- 8,201
- Date
- 15 Jul 2026
- Ownership
- Direct
- Underlying class
- Common Stock
- Underlying amount
- 372
- Exercise price
- $0.000000
- Footnotes
- F5
QTRX
transaction
Derivative
Restricted Stock Unit
Options Exercise
- Transaction value
- Shares
- -834
- Change %
- -3.1%
- Price
- $0.000000*
- Shares after
- 25,857
- Date
- 15 Jul 2026
- Ownership
- Direct
- Underlying class
- Common Stock
- Underlying amount
- 834
- Exercise price
- $0.000000
- Footnotes
- F6
* marks a reported price that did not pass the local price check.
Additional SEC filing notes
Filing notes and footnotes
Explanation of responses 6 footnotes
Footnote F1
Restricted stock units convert into common stock on a one-for-one basis.
Footnote F2
On February 6, 2023, the reporting person was granted 3,929 restricted stock units, vesting 25% on the first anniversary of the grant date, with the remaining 75% vesting in 36 equal monthly installments on the 15th day of each month thereafter.
Footnote F3
On March 15, 2023, the reporting person was granted 6,566 restricted stock units, vesting 25% on the first anniversary of the grant date, with the remaining 75% vesting in 36 equal monthly installments on the 15th day of each month thereafter.
Footnote F4
On February 2, 2024, the reporting person was granted 6,494 restricted stock units, vesting 25% on the first anniversary of the grant date, with the remaining 75% vesting in 36 equal monthly installments on the 15th day of each month thereafter.
Footnote F5
On May 21, 2024, the reporting person was granted 17,878 restricted stock units, vesting 25% on the first anniversary of the grant date, with the remaining 75% vesting in 36 equal monthly installments on the 15th day of each month thereafter.
Footnote F6
On February 4, 2025, the reporting person was granted 40,036 restricted stock units, vesting 25% on the first anniversary of the grant date, with the remaining 75% vesting in 36 equal monthly installments on the 15th day of each month thereafter.