Transaction · 0001207928-26-000009

Donnelly William P

DONNELLY WILLIAM P, DIR, reported a transaction classified as exercise at Quanterix Corp involving 2802.000000 shares for an estimated $0.00. Reported holdings after the transaction were 0.000000 shares. A 10b5-1 reference was not detected in the stored filing text.

exerciseSEC transaction code MDIR
QTRXQuanterix Corp
Trade date
Aug 17, 2026
Filing date
Aug 19, 2026
View on SEC Insider profile
Estimated value$0Shares × reported price
Shares traded2.80k$0.00 per share
Holdings after0Direct
% of reported position tradedUnavailableThis security and ownership context
How reported position traded is calculated

Not calculated for derivative securities.

Row-level estimate for this security and ownership context, not the insider’s complete portfolio. Joint ownership, other transactions in the filing, amendments and footnotes can affect interpretation.

QTRX price since this filing

Daily closing prices, with the filing date and available return windows
QTRX · Daily closing priceLoading daily prices…
Filing dateReturn windows appear as prices become available.
Pre-filing1mo ago +30.4%1w ago -18.2%1d ago -12.5%
Returns since7d -9.5%30d +3.7%90d180d1y

Transaction facts

Stored Form 4 columns with their raw values

Derivative
Type
exercise
Code M
Identifier
0001207928-26-000009
Restricted Stock Unit
Transaction date
Aug 17, 2026
Filed Aug 19, 2026, 10:37 AM · 2d delay
Shares
2,802 sh
$0.00 per share
Estimated value
$0
Computed from shares × price
Holdings after
0 sh
Direct

Filing signal explanations

Badges describe filing facts only — not predictions.

Cluster 14dRepeat 30dPattern $100kLarge $1.00M
Derivative Transaction Direct Ownership
Filing-only score

-6 points

Compact filing score computed from stored Form 4 facts. Version v1.

Mixed or weak signal

This filing has a negative filing-only score. It may be less informative as an insider-activity signal and needs extra context.

How this score is calculated
  • direct_ownership+6 points

    direct_or_indirect_ownership = D

    Direct ownership reports the insider's personal stake.
  • timely_filing+4 points

    reporting_delay_days = 2

    Filing reported within two business days of the transaction.
  • derivative_transaction-16 points

    is_derivative = true

    Derivative exercise rows are less discretionary than open-market purchases.
Read the scoring methodology

Signed filing-only points, not a probability or expected return. Version v1.

Reported relationships & other filings

Form 4 relationship flags and nearby filing context

Reported roles

No officer title

Officer NoDirector Yes10% NoOther No
Footnotes & amended
  1. F1

    Restricted stock units convert into common stock on a one-for-one basis.

  2. F2

    On August 17, 2023, the reporting person was granted 8,238 restricted stock units, vesting 33%, 33%, and 34% on the first, second, and third anniversaries of the grant date, respectively.

Original filing · 0001207928-26-000009
Related transactions

0 other transactions

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Recent company activity

0 recent txs

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